Common Issues with Scion TC You Should Know About

By Brian Wong, Reviewed by: Kurt Niebuhr, Updated on April 23, 2024

1. Common Issues with the Scion tC

1.1 First-Generation Scion tC (2005-2010)

1.1.1 Oil Consumption Issues

The Scion tC is a popular compact sports car that was produced between 2005 and 2016. The first-generation Scion tC, which was produced from 2005 to 2010, was plagued with some common issues that owners experienced. One of the most significant problems with the first-generation Scion tC was oil consumption.

Oil consumption issues with the Scion tC typically present themselves as a low oil level warning light, or the need to frequently add oil between oil changes. The issue is often caused by faulty piston rings that allow oil to seep into the combustion chamber and burn off, causing a significant loss of oil over time.

Oil consumption issues can be frustrating for Scion tC owners, as they can result in engine damage and a reduced lifespan of the vehicle. To address this issue, it is recommended that owners check their oil levels regularly and have their vehicle serviced at a certified mechanic or dealership as soon as they notice any oil consumption problems.

One potential solution to oil consumption issues with the Scion tC is to have the piston rings replaced. This can be a costly repair, but it is often necessary to address the problem effectively. Other solutions may include using higher-quality synthetic oils or additives that can help reduce oil consumption.

Overall, oil consumption issues are a common problem with the first-generation Scion tC, and it is essential for owners to stay vigilant about checking their oil levels and addressing any problems as soon as they arise to ensure the longevity and performance of their vehicle.

1.1.2 Transmission Problems

The Scion tC is a compact sports car that was produced between 2005 and 2016. The first-generation Scion tC, which was produced from 2005 to 2010, was known to have some common issues that owners experienced. One of these issues was related to the vehicle's automatic transmission.

Owners of the first-generation Scion tC often reported problems with the vehicle's automatic transmission. The most common issue was related to the transmission slipping or shifting roughly between gears. This issue can be caused by several factors, including low transmission fluid levels, worn-out transmission components, or faulty solenoids.

Other transmission issues that owners of the first-generation Scion tC reported include delayed or harsh shifting, transmission overheating, and complete transmission failure. These problems can be very frustrating for owners and can be costly to repair.

To address transmission issues with the Scion tC, it is recommended that owners have their vehicle serviced regularly and use only high-quality transmission fluid. In some cases, transmission repairs may be necessary, including replacing worn-out components or rebuilding the entire transmission.

Owners of the first-generation Scion tC should also be aware that some models were affected by a manufacturer recall related to the automatic transmission. The recall involved the replacement of the transmission's torque converter, which was known to cause transmission problems.

1.1.3 Steering Issues

The Scion tC is a compact sports car that was produced between 2005 and 2016. The first-generation Scion tC, which was produced from 2005 to 2010, was known to have some common issues that owners experienced. One of these issues was related to the vehicle's steering.

Owners of the first-generation Scion tC often reported problems with the vehicle's steering, including difficulty turning the steering wheel, a grinding noise when turning, or excessive play in the steering. These issues can be caused by several factors, including worn-out steering components, damaged power steering pumps, or faulty steering racks.

Other steering-related issues that owners of the first-generation Scion tC reported include a vibrating steering wheel, uneven tire wear, and misaligned wheels. These problems can be very frustrating for owners and can also be dangerous, as they can affect the vehicle's handling and overall safety.

To address steering issues with the Scion tC, it is recommended that owners have their vehicle serviced regularly and address any problems as soon as they arise. This may include replacing worn-out steering components, repairing or replacing damaged power steering pumps or steering racks, and ensuring proper wheel alignment and tire balance.

Owners of the first-generation Scion tC should also be aware that some models were affected by a manufacturer recall related to the power steering system. The recall involved the replacement of the electric power steering motor, which was known to cause steering problems.

1.2 Second-Generation Scion tC (2011-2016)

1.2.1 Engine Problems

The Scion tC is a sporty and reliable car that was produced between 2005 and 2016. The second-generation Scion tC, which was produced from 2011 to 2016, was known to have some common issues that owners experienced, particularly with the engine.

One of the most common engine problems reported by owners of the second-generation Scion tC is excessive oil consumption. This issue can cause the engine to consume more oil than it should, which can lead to a variety of other problems, including engine damage and reduced performance. Some owners have reported having to add oil to their vehicle every 1,000 miles or less.

Another common engine problem with the second-generation Scion tC is related to the vehicle's timing chain tensioner. This part is responsible for keeping the timing chain in the correct position and tension, but it can fail over time, causing the engine to produce a rattling noise. This issue can be fixed by replacing the timing chain tensioner.

In addition to these issues, some owners of the second-generation Scion tC have also reported problems with the vehicle's transmission. These issues can include difficulty shifting gears, transmission slippage, and delayed engagement when shifting gears. These problems can be caused by several factors, including worn-out transmission fluid, damaged or worn-out transmission components, or faulty sensors.

To address engine problems with the second-generation Scion tC, it is recommended that owners have their vehicle serviced regularly and address any problems as soon as they arise. This may include replacing worn-out engine components, repairing or replacing damaged timing chain tensioners, and ensuring proper oil levels and regular oil changes.

1.2.2 Transmission Issues

The Scion tC is a popular sports coupe that was produced from 2005 to 2016. The second-generation Scion tC, which was produced from 2011 to 2016, was known to have some common issues that owners experienced, particularly with the transmission.

One of the most common transmission issues reported by owners of the second-generation Scion tC is related to the vehicle's automatic transmission. Some owners have reported experiencing delays in the transmission's response when shifting gears. This issue can be caused by a variety of factors, including a damaged transmission fluid pump or worn-out transmission clutches.

Another common transmission issue with the second-generation Scion tC is related to the vehicle's manual transmission. Some owners have reported experiencing difficulty shifting gears, particularly in cold weather. This issue can be caused by several factors, including worn-out or damaged shift linkage components or low transmission fluid levels.

In addition to these issues, some owners of the second-generation Scion tC have also reported problems with the vehicle's clutch. These issues can include slipping or jerking when the clutch is engaged, as well as difficulty getting the vehicle to move from a standstill. These problems can be caused by worn-out or damaged clutch components or low clutch fluid levels.

To address transmission issues with the second-generation Scion tC, it is recommended that owners have their vehicle serviced regularly and address any problems as soon as they arise. This may include replacing worn-out transmission components, repairing or replacing damaged shift linkage components, and ensuring proper transmission fluid levels and regular fluid changes.

1.2.3 Suspension and Steering Problems

The second-generation Scion tC, produced from 2011 to 2016, is known for its sporty handling and comfortable ride. However, some owners have reported issues with the vehicle's suspension and steering systems.

One of the most common suspension issues with the second-generation Scion tC is related to the vehicle's front struts. Some owners have reported that the front struts wear out quickly and require replacement. This issue can cause the vehicle to bounce excessively over bumps, as well as contribute to uneven tire wear.

Another common suspension issue with the second-generation Scion tC is related to the vehicle's rear suspension. Some owners have reported that the rear shocks wear out quickly and require replacement. This issue can cause the vehicle to bounce excessively over bumps, as well as contribute to instability in corners.

In addition to suspension issues, some owners of the second-generation Scion tC have also reported problems with the vehicle's power steering system. These issues can include a noisy or stiff power steering pump, as well as leaks from the power steering hoses or rack and pinion.

To address suspension and steering issues with the second-generation Scion tC, it is recommended that owners have their vehicle serviced regularly and address any problems as soon as they arise. This may include replacing worn-out suspension components, repairing or replacing damaged power steering components, and ensuring proper power steering fluid levels and regular fluid changes.

2. Scion tC Model-Specific Issues

2.1 Scion tC Release Series

2.1.1 RS 4.0 (2010)

The 2010 Scion tC Release Series 4.0, or RS 4.0, was a special edition of the first-generation Scion tC that was produced in limited numbers. While the RS 4.0 offered some unique features and styling elements, it was not immune to some model-specific issues.

One of the most notable issues with the RS 4.0 was related to the vehicle's transmission. Some owners reported experiencing transmission problems, such as difficulty shifting gears, grinding noises during gear changes, and slipping gears. In some cases, the transmission needed to be completely replaced.

Another common issue with the RS 4.0 was related to the vehicle's electrical system. Some owners reported problems with the car's radio and speakers, which would intermittently cut out or fail to work altogether. Additionally, some owners reported problems with the car's power windows, which would not function properly or would get stuck in the up or down position.

In addition to these issues, some RS 4.0 owners reported problems with the car's exterior, such as peeling paint or bubbling on the body panels. This was particularly common on the hood of the vehicle, which featured a unique graphic that was prone to fading and peeling over time.

To address these issues with the RS 4.0, it is recommended that owners have their vehicle serviced by a reputable mechanic or dealership. This may involve replacing the transmission or addressing electrical issues, as well as repainting or replacing body panels as needed.

Overall, while the RS 4.0 was a unique and eye-catching special edition of the first-generation Scion tC, it was not without its issues. Owners should be aware of these issues and take steps to address them in a timely manner to ensure the longevity and reliability of their vehicle.

2.1.2 RS 6.0 (2011)

The Scion tC Release Series 6.0 (RS 6.0) was released in 2011 as a limited edition version of the second-generation Scion tC. This model featured a unique styling and performance package, but it also had some known issues that owners should be aware of.

One common issue with the RS 6.0 was a problem with the rear hatch release mechanism. Some owners reported that the hatch would not open, which could be frustrating and inconvenient. This issue may be caused by a faulty latch or a problem with the electrical system, and it may require replacement of the affected components.

Another issue with the RS 6.0 was related to the suspension. Some owners reported a clunking or rattling noise coming from the rear suspension when going over bumps or rough roads. This may be caused by worn or damaged suspension components, such as the shocks, struts, or bushings, and may require replacement to resolve the issue.

Finally, some owners of the RS 6.0 reported issues with the power windows. Specifically, the windows may become stuck or refuse to operate, which could be a safety hazard in certain situations. This issue may be caused by a faulty window motor or switch, and may require replacement of the affected parts.

Overall, the Scion tC Release Series 6.0 was a unique and desirable model for many Scion enthusiasts, but it did have some known issues that should be addressed if they occur. Owners should be aware of these issues and work with a qualified mechanic to diagnose and repair any problems to keep their RS 6.0 running smoothly.

2.1.3 RS 7.0 (2012)

The Scion tC RS 7.0 is a limited-edition model of the second-generation Scion tC, produced in 2012. It is a sporty coupe that is well-known for its unique features and design, which sets it apart from the standard tC models. However, like any other car, the Scion tC RS 7.0 has some specific issues that owners need to be aware of.

One common problem with the Scion tC RS 7.0 is related to the transmission. Some owners have reported issues with the automatic transmission, which may fail to shift gears smoothly or may even become stuck in one gear. This can cause a range of problems, including poor acceleration and reduced fuel economy. In some cases, the transmission may need to be replaced, which can be a costly repair.

Another issue that has been reported with the Scion tC RS 7.0 is related to the steering system. Some owners have reported problems with the power steering, which may fail to operate properly or may make strange noises when turning. This can be a safety hazard, as it can affect the driver's ability to control the vehicle, especially at high speeds.

Additionally, some owners have reported problems with the suspension system on the Scion tC RS 7.0. This can cause the car to handle poorly or may cause excessive wear on the tires. Some owners have reported issues with the struts or shocks, which may need to be replaced to resolve the problem.

Overall, the Scion tC RS 7.0 is a unique and fun car to drive, but it is not without its issues. If you are considering purchasing one of these limited-edition models, it is important to be aware of these common issues and to have a mechanic inspect the vehicle before making a purchase. With proper maintenance and care, however, the Scion tC RS 7.0 can provide many years of enjoyable driving.

2.2 Scion tC Monogram (2014-2016)

2.2.1 Electrical Problems

The Scion tC Monogram, which was produced from 2014 to 2016, has had some issues with its electrical system. One common issue reported by owners is with the car's audio system. Some have reported that the audio system may randomly turn off or stop working altogether, while others have reported issues with the Bluetooth connectivity.

Another electrical issue reported by some Scion tC Monogram owners is related to the car's power windows. Some have reported that the power windows may stop working altogether or may work intermittently, which can be a frustrating issue to deal with.

In addition, some Scion tC Monogram owners have reported issues with the car's headlights. Some have reported that the headlights may flicker or may not turn on at all, which can be a safety concern when driving at night.

Overall, while the Scion tC Monogram is generally a reliable car, it's important for owners to be aware of these potential electrical issues and to have them addressed by a qualified mechanic as soon as possible to avoid any further damage or safety concerns.

2.2.2 Air Conditioning Issues

The Scion tC Monogram, a limited edition model released in 2014, is known for its sleek design and luxurious features. However, some owners have reported issues with the air conditioning system.

One common problem reported by tC Monogram owners is that the air conditioning system may not blow cold air consistently. This can be caused by a variety of factors, including a refrigerant leak, a malfunctioning compressor, or a clogged expansion valve.

Another issue reported with the tC Monogram's air conditioning system is a strange odor emanating from the vents. This can be caused by mold or bacteria growth inside the system, which can occur when the system is not used regularly or is not properly maintained.

In some cases, tC Monogram owners have reported issues with the air conditioning system failing completely. This can be caused by a faulty compressor, a refrigerant leak, or a malfunctioning fan.

To address air conditioning issues with the tC Monogram, it is recommended to take the car to a qualified mechanic or dealership for diagnosis and repair. Regular maintenance, such as replacing air filters and cleaning the system, can also help prevent issues from occurring.

2.2.3 Sunroof Malfunctions

The Scion tC Monogram (2014-2016) is known for its sleek design and modern features, but it is not without its share of problems. One common issue with this model is sunroof malfunctions. Owners have reported issues with the sunroof getting stuck, not opening or closing properly, or making strange noises.

One of the main causes of sunroof malfunctions in the Scion tC Monogram is a faulty motor. Over time, the motor can wear out, leading to problems with opening and closing the sunroof. Another possible cause is a broken or worn track. If the track is damaged or worn, it can prevent the sunroof from moving smoothly and cause it to get stuck or malfunction.

In some cases, the sunroof malfunctions may also be caused by a faulty switch or wiring. If the switch is not functioning properly or the wiring is damaged, it can prevent the sunroof from opening or closing properly.

Owners of the Scion tC Monogram with sunroof malfunctions should take their vehicle to a certified mechanic or dealership for inspection and repair. Depending on the cause of the issue, repairs may include replacing the motor, track, switch, or wiring. It is important to address sunroof malfunctions promptly to prevent further damage to the sunroof and to ensure the safety and comfort of the driver and passengers.

3. Engine-Specific Problems with the Scion tC

3.1 2AZ-FE Engine Problems

3.1.1 Oil Consumption Issues

The Scion tC, specifically the second-generation models (2011-2016), have been known to experience oil consumption issues, which can be a cause for concern for owners. This problem is engine-specific and is often attributed to the 2AZ-FE engine used in these vehicles.

One of the main causes of oil consumption in the 2AZ-FE engine is the faulty piston rings. These rings may not seal properly, leading to oil consumption and decreased engine performance. In some cases, the oil consumption can be excessive, with some owners reporting the need to add oil to their engine every 1,000 miles or less.

Another cause of oil consumption in the Scion tC is related to the PCV (positive crankcase ventilation) valve. The PCV valve is responsible for regulating the flow of gases from the crankcase to the engine intake manifold. If the valve is clogged or faulty, it can cause increased pressure in the crankcase, leading to oil consumption.

Owners who experience oil consumption issues with their Scion tC may notice several symptoms, including blue smoke coming from the exhaust, a burning smell, decreased engine performance, and the need to add oil more frequently than usual. It is important to address these symptoms promptly to prevent potential engine damage.

To address oil consumption issues in the Scion tC, owners may need to have their engine inspected by a qualified mechanic. Depending on the severity of the problem, the mechanic may recommend replacing the faulty piston rings or the PCV valve. In some cases, the engine may need to be rebuilt or replaced entirely.

Regular maintenance can help prevent oil consumption issues in the Scion tC. Owners should follow the manufacturer's recommended oil change intervals and use high-quality oil and oil filters. Additionally, it is important to have the engine inspected regularly for any signs of wear or damage that could lead to oil consumption.

3.1.2 VVT-i Malfunctions

The Scion tC 2AZ-FE engine is known to have issues with the Variable Valve Timing with Intelligence (VVT-i) system. This system controls the engine’s valve timing and improves performance and fuel economy. However, when the VVT-i system malfunctions, it can cause engine problems.

One common issue with the VVT-i system is a rattling noise from the engine, especially at startup or low RPMs. This noise can be caused by a malfunctioning VVT-i actuator, which controls the timing of the intake camshaft. The actuator may become clogged with sludge, leading to reduced oil pressure and decreased performance.

Another issue is the VVT-i oil line, which may become clogged or damaged. The oil line supplies oil to the VVT-i system, and when it is clogged, it can cause the system to malfunction. This can result in a rough idle, reduced engine power, and increased fuel consumption.

In some cases, the VVT-i system may also cause the engine to stall or misfire. This is often due to a faulty oil control valve or VVT-i actuator. If the problem is not addressed, it can lead to severe engine damage, including valve and piston damage.

To prevent VVT-i malfunctions, it is essential to follow the manufacturer’s recommended oil change intervals and use high-quality oil. Regular oil changes can prevent sludge buildup and keep the VVT-i system functioning correctly. If you notice any unusual noises or performance issues with your Scion tC, it is important to have it inspected by a qualified mechanic to address the problem promptly.

3.2 2AR-FE Engine Problems

3.2.1 Water Pump Failures

The Scion tC second-generation models from 2011 to 2016 come equipped with the 2AR-FE engine. One of the engine-specific problems commonly reported by Scion tC owners is water pump failure. The water pump is a crucial component in the engine cooling system, responsible for circulating coolant throughout the engine to prevent overheating.

Several factors can contribute to water pump failure in the Scion tC. One common cause is a broken or worn-out impeller, which can reduce the pump's ability to circulate coolant effectively. Another potential issue is a damaged or worn bearing, which can cause the pump to leak or seize up completely.

Owners of Scion tC vehicles with water pump problems may notice symptoms such as overheating, coolant leaks, or unusual noises coming from the engine compartment. It's important to address these issues promptly to prevent further damage to the engine and ensure the vehicle's safe operation.

If you suspect a water pump issue with your Scion tC, it's essential to have it inspected and repaired by a qualified mechanic. Depending on the severity of the problem, repairs may involve replacing the water pump, impeller, or other related components. Regular maintenance and timely repairs can help prevent water pump failures and ensure the reliable performance of your Scion tC engine.

3.2.2 Oil Leaks

The Scion tC with the 2AR-FE engine is known to have issues with oil leaks. Some drivers have reported leaks coming from the valve cover gasket, camshaft seals, or oil pan gasket. The valve cover gasket may fail due to a combination of heat and oil exposure, leading to oil leaking onto the exhaust manifold, which can create a burning smell and even lead to a fire. Camshaft seal leaks can cause oil to leak onto the timing chain, which can affect engine timing and cause serious damage. Finally, leaks from the oil pan gasket can occur due to wear and tear or improper installation. These leaks can result in a loss of oil and potential engine damage if not addressed promptly. To prevent oil leaks, regular maintenance such as oil changes and inspections can help identify and fix potential issues early on.

3.2.3 Timing Chain Problems

The Scion tC second-generation models (2011-2016) are known to have issues with their timing chains, which can lead to serious engine problems. The timing chain is a critical component that synchronizes the engine's valves and pistons to ensure smooth operation. Over time, the timing chain can become worn or stretched, which can cause it to slip or even break, resulting in severe engine damage.

One of the common symptoms of a failing timing chain in the Scion tC is a rattling noise coming from the engine compartment. This noise is often most noticeable when the engine is idling or accelerating. If left unaddressed, the timing chain can fail, causing the engine to stop running altogether. Other symptoms of a failing timing chain may include poor engine performance, reduced fuel efficiency, and difficulty starting the engine.

If you suspect that your Scion tC has a timing chain problem, it is essential to have it diagnosed and repaired as soon as possible to prevent further damage to the engine. The repair process typically involves replacing the timing chain and any other components that may have been damaged by the chain's failure, such as the tensioner or guide rails. In some cases, the engine may need to be completely rebuilt or replaced.

To avoid timing chain problems in the Scion tC, it is important to follow the manufacturer's recommended maintenance schedule, including regular oil changes and inspections of the engine's timing components. If you notice any unusual noises or other symptoms coming from your vehicle's engine, it is important to have it checked by a qualified mechanic as soon as possible to prevent further damage.

4. Common Maintenance Issues with the Scion tC

4.1 Regular Maintenance Checklist

4.1.1 Oil Changes

Regular oil changes are an essential aspect of maintaining a Scion tC. The engine oil helps lubricate and protect the engine's moving parts, reducing wear and tear and preventing damage to the engine. Neglecting to change the oil regularly can cause a buildup of contaminants and sludge, reducing the oil's effectiveness and potentially causing engine damage.

To keep the Scion tC running smoothly, it's recommended to change the oil every 5,000 to 7,500 miles, depending on the driving conditions and the type of oil used. Synthetic oil is often recommended for the tC, as it provides better protection and lasts longer than conventional oil.

In addition to changing the oil, other routine maintenance tasks should be performed regularly. These include checking and replacing the air filter, inspecting the brakes and tires, and monitoring the fluid levels. Regular maintenance helps prevent problems and keeps the tC in good condition, ensuring its longevity and reliability on the road.

4.1.2 Brake Maintenance

Proper brake maintenance is crucial for the safety and longevity of any vehicle, including the Scion tC. Regular brake maintenance should be included in every Scion tC owner's maintenance checklist. The brake pads and rotors on the tC should be checked and replaced as needed, typically every 50,000 to 70,000 miles depending on driving conditions. Brake fluid should be flushed and replaced every 2 to 3 years or as recommended by the manufacturer.

In addition to regular maintenance, it is important to be aware of signs of brake issues such as squeaking, grinding, or vibrating brakes, or if the brake pedal feels soft or unresponsive. These can indicate worn brake pads, damaged rotors, or other brake system problems that require immediate attention from a qualified mechanic. Proper brake maintenance and prompt repairs can help ensure the safety and reliability of the Scion tC's braking system.

4.1.3 Tire Rotation and Replacement

Regular tire rotation and replacement is crucial to the performance and safety of the Scion tC. Tire rotation involves moving the front tires to the back and vice versa, while also switching the left and right sides. This helps to ensure even wear on all four tires, which can extend their lifespan and prevent the need for premature replacement.

Tire replacement should be done when the tread depth reaches 2/32 of an inch or less, which is the legal limit in most states. Driving on tires with worn-out tread can be dangerous, as they provide less traction and are more susceptible to blowouts. It's also important to replace all four tires at once to maintain balance and stability on the road.

When choosing new tires for the Scion tC, it's important to select ones that match the recommended size, load capacity, and speed rating for the vehicle. Additionally, it's recommended to invest in high-quality tires from reputable brands, as they tend to offer better performance and durability.

Overall, regular tire rotation and replacement is a key aspect of maintaining the Scion tC and ensuring a safe and smooth driving experience. It's important to adhere to the recommended maintenance schedule and consult with a professional mechanic if there are any concerns or issues with the tires.

4.2 Common Wear and Tear Items

4.2.1 Battery Replacement

The battery is one of the common wear and tear items in a Scion tC that requires replacement at some point. Typically, car batteries last between three and five years, depending on several factors, such as driving conditions, weather, and maintenance. Signs that indicate the battery may need replacing include slow cranking, dim headlights, and a clicking sound when turning the key in the ignition.

Replacing a battery in a Scion tC is a straightforward process, but it is essential to select the right battery for the vehicle. The recommended battery type and specifications are usually listed in the owner's manual or on the battery itself. It is also crucial to ensure that the battery is securely fastened in place to prevent it from shifting or vibrating during driving, which can damage the electrical system.

Regular maintenance of the battery can help extend its lifespan and prevent the need for premature replacement. Some tips for maintaining a car battery include keeping the battery terminals clean, ensuring that they are tightly connected, and checking the battery's charge level regularly. In some cases, the battery may need to be charged using a battery charger or replaced entirely if it no longer holds a charge.

Overall, battery replacement is a common maintenance issue for Scion tC owners. By following the recommended guidelines for selecting and maintaining a battery, car owners can ensure that their vehicle starts reliably and runs smoothly.

4.2.2 Brake Pad and Rotor Replacement

Brake pad and rotor replacement are common maintenance issues for Scion tC owners. Over time, the brake pads wear down and need to be replaced to maintain proper braking performance. The rotors also wear down over time and may need to be replaced or resurfaced to ensure smooth and even braking.

Signs that your brake pads or rotors need to be replaced include squeaking or grinding noises when you apply the brakes, reduced braking performance, and vibrations or pulsations when you brake. It is important to have your brakes inspected regularly and replace the brake pads and rotors as needed to ensure safe driving.

Replacing brake pads and rotors typically involves removing the wheel, caliper, and old pads, then installing new pads and reassembling the components. If the rotors are also being replaced, the old rotors will need to be removed and the new ones installed. It is important to follow proper installation procedures to ensure proper fit and function of the new parts.

Regular maintenance of your brakes, including replacing brake pads and rotors as needed, can help ensure the safety and reliability of your Scion tC. It is recommended to have your brakes inspected regularly by a certified mechanic and to follow the manufacturer's recommended maintenance schedule for your vehicle.

4.2.3 Spark Plug Replacement

Spark plugs are a crucial component of the ignition system in any vehicle, including the Scion tC. Over time, spark plugs can wear down, causing a range of issues with your vehicle's performance. It is recommended to replace spark plugs every 30,000 to 60,000 miles, depending on the type of spark plugs used in your Scion tC.

Some signs that it's time to replace your spark plugs include difficulty starting the engine, rough idling, reduced fuel economy, and misfires. A misfiring engine can also trigger the check engine light to come on.

Replacing spark plugs is a relatively simple and inexpensive task, but it is important to use the correct type of spark plugs for your Scion tC. Consult your owner's manual or a trusted mechanic to ensure you are using the right type of spark plugs.

Overall, regular spark plug replacement is an important aspect of maintaining the performance and efficiency of your Scion tC. By keeping an eye out for signs of wear and tear, you can ensure that your vehicle is running smoothly and reliably.

5. Scion tC Safety Concerns

5.1 Airbag Recalls and Safety Concerns

The Scion tC has had some safety concerns in the past, particularly with regards to airbag recalls. In 2013, the National Highway Traffic Safety Administration (NHTSA) issued a recall for certain 2005-2007 tC models due to a potential issue with the front passenger airbag. The recall affected around 24,000 vehicles, and the concern was that the airbag may not deploy correctly in the event of a crash.

In 2014, a further recall was issued for certain 2006-2008 tC models due to a problem with the side airbags. The issue was with the side airbag sensor assembly, which may have been improperly manufactured and could fail to detect a crash or deploy the airbag incorrectly. This recall affected around 52,000 vehicles.

In addition to these recalls, there have been reports of other safety concerns with the Scion tC. Some drivers have reported issues with the car's handling and stability, particularly at high speeds or in adverse weather conditions. There have also been reports of brake problems, including issues with the brake pedal feeling spongy or the brakes failing to engage properly.

It's important for drivers to stay aware of any safety recalls or concerns related to their Scion tC and to take their vehicle in for any necessary repairs or updates. Regular maintenance and inspections can also help ensure that the car is safe and roadworthy.

5.2 Electronic Stability Control Malfunctions

The Scion tC has had some safety concerns related to its electronic stability control system. The electronic stability control system is designed to help drivers maintain control of their vehicle during sudden maneuvers, such as swerving or turning, by automatically applying the brakes to individual wheels and adjusting the engine power output.

However, some Scion tC owners have reported issues with the electronic stability control system malfunctioning, causing unexpected brake application or reduced engine power output. These malfunctions can occur even under normal driving conditions, increasing the risk of an accident.

In response to these safety concerns, Toyota issued a recall for certain Scion tC models to address the electronic stability control system issue. Owners were advised to take their vehicles to a Toyota dealer to have the necessary repairs made free of charge.

It's important for Scion tC owners to be aware of any potential safety concerns with their vehicle, including issues related to the electronic stability control system. Regular maintenance and inspections can help identify any potential issues early on and ensure the safety of the driver and passengers.

5.3 Seat Belt Issues

Scion tC has faced several safety concerns over the years, one of which includes seat belt issues. There have been reports of the front seat belts failing to retract, resulting in slack in the belt and potentially increasing the risk of injury in a crash. This problem is more common in the earlier model years of the tC, particularly the 2005 and 2006 models.

In response to these concerns, Scion issued a recall for affected vehicles to inspect and potentially replace the seat belt assemblies. This recall affected over 11,000 vehicles and was aimed at ensuring the safety of drivers and passengers.

It is important for tC owners to check for any open recalls on their vehicles and promptly address any issues related to seat belt function. Regular maintenance and inspection of seat belts can also help ensure their proper functioning and reduce the risk of injury in the event of an accident.

6. Buying a Used Scion tC

6.1 Pre-Purchase Inspection Checklist

When buying a used Scion tC, it's important to conduct a thorough pre-purchase inspection to ensure that you're getting a reliable and safe vehicle. Here is a checklist of items to inspect before making your purchase:

1. Body and exterior: Inspect the body for any signs of damage or rust. Check for any dents, scratches, or paint chips. Inspect the windshield and other windows for cracks or chips. Check that all lights and signals are working properly.

2. Tires and wheels: Check the condition of the tires and make sure they have sufficient tread. Check for any signs of uneven wear, which could indicate suspension or alignment problems. Check the condition of the wheels and make sure they're not bent or damaged.

3. Engine and transmission: Check for any leaks or unusual noises coming from the engine or transmission. Check the oil level and make sure it's clean. Take the car for a test drive to ensure that the transmission shifts smoothly and that the engine runs smoothly.

4. Brakes and suspension: Test the brakes to ensure they're working properly and make sure there are no signs of wear or damage to the brake pads or rotors. Check the suspension for any signs of wear or damage.

5. Interior: Inspect the interior for any signs of wear or damage. Check that all electrical components, such as the radio and air conditioning, are working properly. Check the condition of the seats and make sure they're not torn or worn.

6. Safety features: Check that all safety features, such as seat belts and airbags, are working properly.

7. Maintenance records: Check the maintenance records to ensure that the car has been properly maintained and serviced on a regular basis.

By conducting a thorough pre-purchase inspection, you can avoid buying a car with hidden problems and ensure that you're getting a reliable and safe vehicle.

6.2 Common Issues to Look For

6.2.1 Engine and Transmission Problems

When considering buying a used Scion tC, it's important to pay attention to any potential engine and transmission problems. One common issue with the tC is a malfunctioning VVT-i system, which can lead to engine performance problems and even complete engine failure if left unchecked. It's also important to check for any oil leaks, as these can be a sign of more serious engine problems.

In addition to engine issues, problems with the transmission can also occur in the Scion tC. One issue to watch out for is slipping or hard shifting, which could be a sign of a faulty transmission control module or worn clutch. Additionally, some owners have reported problems with the automatic transmission's shift solenoids, which can cause erratic shifting and other transmission-related issues.

When inspecting a used Scion tC, it's important to test drive the vehicle and pay attention to any unusual noises or vibrations coming from the engine or transmission. A mechanic's inspection can also help identify any potential issues and give you a better idea of the vehicle's overall condition.

Regular maintenance, such as oil changes and transmission fluid flushes, can help prevent or mitigate these issues. However, it's important to keep in mind that even with proper maintenance, engine and transmission problems can still occur in a used vehicle.

6.2.2 Suspension and Steering Issues

When buying a used Scion tC, it's important to pay attention to the suspension and steering components. The suspension system is responsible for ensuring a smooth and stable ride, while the steering system is responsible for controlling the direction of the vehicle. Here are some common issues to look for:

1. Worn or damaged shocks and struts: These components are essential for absorbing bumps and ensuring a smooth ride. If they're worn or damaged, you may notice excessive bouncing, vibrations, or noise.

2. Broken or worn-out springs: The springs help to support the weight of the vehicle and absorb shocks. If they're broken or worn out, you may notice a sagging ride height, bottoming out over bumps, or excessive bouncing.

3. Loose or worn-out steering components: The steering system includes a number of components such as tie rods, ball joints, and bushings. If these parts are loose or worn out, you may notice a loose or wandering steering feel, clunking or knocking noises, or uneven tire wear.

4. Alignment issues: Proper alignment is crucial for maintaining stable handling and preventing premature tire wear. If the vehicle pulls to one side, has uneven tire wear, or feels unstable at high speeds, it may be due to alignment issues.

5. Power steering problems: The power steering system is responsible for assisting with steering effort. If it's not functioning properly, you may notice stiff or difficult steering, whining noises, or leaks.

It's important to have a qualified mechanic perform a thorough inspection of the suspension and steering components before purchasing a used Scion tC to ensure any issues are identified and addressed.

6.2.3 Body and Paint Damage

When considering buying a used Scion tC, it is important to pay attention to any body and paint damage. One common issue to look for is rust, especially in areas such as the wheel wells and undercarriage. Rust can weaken the body and cause further damage, so it is important to thoroughly inspect the car for any signs of rust.

Another common issue to look for is any signs of collision damage or previous repairs. This can include uneven panel gaps, mismatched paint colors, or signs of paint overspray. These issues can indicate that the car has been in an accident and may have underlying structural damage.

It is also important to inspect the car for any dents or scratches. While minor damage may not affect the car's overall performance, it can impact its resale value and overall appearance.

Additionally, it is important to inspect the car's windshield and windows for any cracks or chips. These can be safety hazards and may require costly repairs.

When inspecting the body and paint of a used Scion tC, it is important to be thorough and not hesitate to ask for a professional inspection if necessary. Identifying any issues beforehand can help avoid costly repairs and ensure a better overall buying experience.

7. Final Thoughts

7.1 Conclusion

In conclusion, the Scion tC is a reliable and popular sports coupe that has a lot to offer in terms of performance and style. However, like any car, it has its fair share of issues that need to be addressed. It is important to keep up with regular maintenance, such as oil changes, brake maintenance, and tire rotations, to ensure the longevity of the vehicle. Additionally, when purchasing a used Scion tC, it is important to thoroughly inspect the engine and transmission, suspension and steering, and body and paint for any potential issues or damage. By being aware of these common issues and taking the necessary steps to address them, the Scion tC can continue to provide a fun and reliable driving experience for its owners.

7.2 Tips for Maintaining Your Scion tC

Maintaining your Scion tC is important to ensure that it stays in good condition and lasts as long as possible. Here are some tips for maintaining your Scion tC:

1. Follow the recommended maintenance schedule: The owner's manual for your Scion tC will have a recommended maintenance schedule. Make sure you follow it closely to keep your car in good condition.

2. Check your fluids regularly: Regularly check your oil, coolant, brake fluid, power steering fluid, and transmission fluid levels. Top them up if necessary and replace them according to the recommended schedule.

3. Keep your tires properly inflated: Check your tire pressure regularly, ideally once a month, and keep them inflated to the recommended level. This will help ensure good fuel efficiency, handling, and tire wear.

4. Change your air filter: Your Scion tC's air filter should be changed according to the recommended schedule, usually every 15,000-30,000 miles. A dirty air filter can reduce performance and fuel efficiency.

5. Replace your brake pads and rotors when necessary: Your brakes are an important safety feature, so make sure you replace your brake pads and rotors when they start to wear down.

6. Keep your battery in good condition: Check your battery terminals for corrosion and clean them as needed. Also, replace your battery according to the recommended schedule, usually every 3-5 years.

7. Wash and wax your car regularly: Regularly washing and waxing your Scion tC can help protect the paint and keep it looking good.

By following these tips, you can help keep your Scion tC in good condition and prolong its lifespan. Regular maintenance and care can also help prevent more costly repairs down the line.

7.3 Where to Find More Information and Support.

If you are a Scion tC owner or are considering buying one, there are many resources available to help you with maintenance and repairs. One of the best places to start is with the owner's manual, which will provide specific guidelines for maintenance and troubleshooting.

In addition, there are many online forums and communities dedicated to Scion tC enthusiasts, where you can find advice, share tips and tricks, and connect with other owners. Some popular Scion tC forums include ScionLife.com and ClubSciontC.com.

For repairs and maintenance, you can visit your local Toyota or Scion dealership, or find a reputable independent mechanic who is familiar with Scion vehicles. It is important to make sure that any mechanic you choose is experienced with Scion tC models and uses high-quality parts and equipment.

Finally, Scion tC owners can also find support through the Toyota Customer Experience Center, which provides assistance with questions, concerns, and complaints related to Scion vehicles. They can be reached via phone, email, or social media.

Example List of Scion tC Engine Error Codes and Descriptions

FAQ: Common Issues with the Scion TC

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