Skip the auto shop - Our mechanics make house calls

Q: Car won't turn on

asked by on

My car won't turn on. Someone tried to steal it when I was in a store, and when we came back, the lights were on, and the doors were unlocked. We thought the battery was dead, but the radio turns on fine. When we try to start it, it goes into theft deterrent mode with the locked car symbol, which won't turn off no matter what we do. We've tried leaving the key in the door, leaving the key in the ignition in accessory mode, and even tried to dearm it via radio. Any advice?
My car has an automatic transmission.

Hello, thank you for writing in. I am sorry to hear about your situation! The very first thing to do is check the owner’s manual for any information about the anti-theft system (if you have not already done so). If you have a spare key, you will want to try starting it with that one instead. The anti-theft module, or the procedures you have attempted, may have messed with the programming for your main key. Make sure the battery is fully charged and allowing the computer to use the amount of power that it needs to perform these functions. If you have any aftermarket parts on the vehicle, make sure they are disconnected if possible. For more help starting the vehicle, contact our service department to schedule an appointment to meet you at the vehicle.

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: Tire wobbly and making scratching sound

You have a failing hub bearing. When you get this noise and this feeling then the bearing is bad enough that there is a lot of excessive free play in the wheel. I typically get the vehicle in the air...

Q: How much can I expect to be charged in labor fees to replace all 4 sparks plugs in my 2005 Chevy cobolt? once place told me 177 do

Claimed by Andrew Quinn

Q: Power seat not working.

The power seat motor that moved the seat forward would be the same motor that would run it backwards. The only difference would be the switch would have to make the motor run the opposite way by switching power and...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...