Skip the auto shop - Our mechanics make house calls

Q: Antitheft light flashing on dashboard

asked by on

The antitheft light was flashing on the dash. I moved my car in the driveway, and the next morning the ignition key would not turn. The steering wheel isn't locked, and the car is in park.

A: It sounds like the ignition switch has gone...

It sounds like the ignition switch has gone amiss. There is an antenna built into it to detect the proper key. If that malfunctions, your Anti-Theft Light will come on. The key not turning is a different problem. It is just a plain lock cylinder. If the proper key will not turn it, try another one. You can try a small spray of WD-40 or a graphite based lubricant. The fact that two things are wrong with one part pretty much says it needs replaced. You will have to have the new keys and cylinder programmed to the car for it to start. I would recommend having a certified mechanic properly diagnose your ignition in order to have the correct repairs done.

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・Save up to 30%

Get a quote

What others are asking

Q: I was replacing the power window motor and the clips that hold it in place broke, what can I do so I can use my window?

Hello and thank you for contacting YourMechanic. You will have to remove the window regulator from the door. Take a flat tip screwdriver and use it to pry off the broken part of the clip. You will need to get...

Q: jerking while driving

Hi there. This jerking can occur for a number of reasons. I would first start by checking to see if the check engine light is coming on. If it is then I would scan the computer for codes. Any codes...

Q: Car clicking when starting

Hi there. This sounds to me as like an issue in your anti-theft system. When your vehicle has its battery changed, the power is reset. This commonly triggers the anti-theft system which tell your computer to lock up. Have a...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...