Q: Anti-theft system activates and car stalls

asked by on

Without warning, the anti-theft system independently activates and then my car stalls, also without warning. This problem has been recurring and the anti-theft warning light comes on. Even with the key in the ignition, my car will not start. I took it to the mechanic’s shop and was told that the instrument panel cluster or central computer would need replacement. He referred me to a dealer, but before going there I would like your assessment. What do you think would fix this?

Hey there. If you have a "chip key", try replacing it and re-programming to recognize the new key. Sometimes the keys will develop faults. If it is not the key, there is a specific Diagnostic Procedure for this issue in the FSM (factory service manual). Prior to performing that diagnostic, it is useless to guess. Please note that if the problem is "intermittent" (i.e., the worst scenario in terms of diagnosing something because the problem is NOT always there), you might be in a situation where you have to replace a BCM or PCM just because you have ruled everything else out (i.e., wiring faults and so forth). If you would like to have this checked, a qualified pro from YourMechanic can come to your car’s location to diagnose the stalling issue and pinpoint what should be done.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Anti-theft system activates and car stalls

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: Car starts but won't run.

If your engine starts but won't stay running (idling) the problem is most likely a faulty idle air control (IAC) motor. The IAC opens and closes to maintain engine idle, if this component goes out, the engine will keep stalling. A...

Q: Engine problems, sluggish acceleration, dash lights on

It would help to know what the codes were that the dealer turned off and are most likely back. If they were misfire, antilock brake, or engine problem codes they will all help in the diagnosis of the problem you...

Q: My 2004 Buick Rendezvous Service Engine Soon light is on. What does this mean

the check engine light comes on for the computer sensed a problem in the systems that it monitored. There can be many different reasons for it to come on from a loose gas cap to sensor failures. You will need...

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.