Skip the auto shop - Our mechanics make house calls

Q: Engine in auto theft mode/ remote is lost, so valet key won't turn on engine.

asked by on

Is there any way to reset car computer so valet key will work ? Remote key is misplaced, and car motor will turn over but not run because auto theft mode seems to be on. Is only remedy to get new remote key???

My car has 100000 miles.
My car has an automatic transmission.

A: Hey there, unfortunately there is no way to...

Hey there, unfortunately there is no way to reset the alarm without having a new key and having it cut and programmed to work on your car by a dealer scanner to program it for you. I recommend having 2 keys made and programmed to prevent a problem in the future.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a mazda 3 2007 and I do not know where the TCM is. It is not under the battery, so where else can be?

The transmission control module (TMC) is located directly on top of the transmission under the battery tray. If you need further assistance with replacing the TMC, then seek out a professional, such as one from Your Mechanic, to help you....

Q: oil leaking and smoke coming from engine

The source of the oil leak may be near a hot component like the exhaust manifold. If the engine valve cover or the crankcase ventilation system is leaking oil, it may run down the side of the engine to the...

Q: Popping noise when turnning the wheel, and want reverse straight, or stop reversing

This is a common sign of a failing CV joint. A CV (Constant Velocity) joint is a shaft that connects the transmission to the wheels, essentially transferring the power from the drive train directly to the wheels. The CV joint...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...