Scion tC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Scion tC

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Scion tC Problems

Check Engine Light Due to Defective VVT-i Controller

An illuminated Check Engine Light could be caused by a defective VVT-i controller, which changes cam timing for optimal power.  Updated parts are available and the repair may be covered under the powertrain warranty.

CEL - Error Code 420: Catalytic Converter

Check Engine Light Illuminated
Problem: Diagnostic Showed Error Code 420: "Catalytic Converter Efficiency Below Threshold (Bank 1)
Solution: Free Replacement by Dealer Under California 7yr/70k or Federal 8yr/80k Warranty Covering Emissions Parts

Excessive Oil Consumption

Drivers of the Scion tC may notice excessive oil consumption between oil changes, even to the extent of the engine oil warning light displayed on the multi-function display.

This issue is known to be caused by infrequent oil changes causing engine sludge, or worn piston rings. 

The engine should be cleaned of oil sludge, and if oil consumption remains excessive, the engine may need new piston rings, or other internal components replaced. 

To avoid this issue, change the engine oil and filter every 3,000 miles, and ensure the proper grade of oil is used. 

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Scion tC Questions

scion tc 2007 hatch panel switch is broken (1 answer)

Hi guys, I have a scion tc 2007 hatch panel switch is broken. The trunk is closed, so I cannot open it without the switch button. Im looking for a solution on how can still replace the switch button while the trunk is closed. Any suggestion would help. Thanks

How do I stop the rear brake pads from rubbing the rotor (1 answer)

I recently changed my rear brake pads and everything went back on with no problem but when I went for a drive and brought it back home I could smell n feel the heat coming off the brake pads and rotor. When I went for the drive everything time I braked I could hear a squealing sound and rubbing c...

Will adding a cold air intake affect my warrenty? (1 answer)

I want to enhance the performance of my vehicle. I am currently under a 3 yr warranty. Would swapping my stock intake with a after market intake void my warranty?

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Scion tC Recalls

Load Rating Label Inaccurate After Accessory Installation

The vehicle certification label may have the incorrect load carrying capacity listed on it. Toyota will provide owners with a corrected label, and dealers will aid in installation if necessary free of charge to resolve the concern.

Load Carrying Capacity Label Incorrect

The vehicle certification label may indicate the improper load carrying capacity rating for the vehicle. This is because accessories were added to them after the vehicle was built, changing the available load that the vehicle can handle carrying. Vehicle owners will be provided a corrected label and dealers will aid in installing them free of charge to resolve the concern.

Rear Suspension Not Tightened Properly

Specific parts of the rear suspension may not have been torqued properly when installing the rear coil springs. As a result, the rear suspension arms may detach, increasing risk of a crash. The dealership will replace the bolts, nuts, rear suspension arms and rear suspension member sub-assembly free of charge to resolve the concern.

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Scion tC Reviews

Bought this car in 2007 with 20k miles on it, and it now has 100,000k miles and have never had any major problems with it. The only issues that I've had are instances such as interior console lights "burning" out and my power door locks failing, but then working again, and then not working again, all on their own. Sometimes my interior vent fans just don't turn on, and my radio freezes up. I be...
Great car only problem was hit a pot hole at 45mph and tore up my upper and lower controll arms, hub, crossmember, tie rod, and the A-frame... but good car none the less
LOVE my Tc!!! It has been a great reliable car. The Tc may not have all the bells and whistles, but it had everything I wanted for a decent price. We have had ours for 7 years now and would purchase another. The down side over the years were the low profile tires, you hit a pot hole and forget it!

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