Q: starts then cuts right off and security light flashes twice.

asked by on

starts then cuts right off and security light flashes twice.

My car has 300000 miles.
My car has an automatic transmission.

The most common causes for this are the ignition lock cylinder or the PassLock sensor for the Vehicle Anti-Theft System. The lock cylinder and/or key may need replacement as well. Try and have this done first. If it fails to start, leave the key in the ON position. The security light should stop flashing or go out after 10 minutes. Once it does, turn the ignition off for a count of 20, then try to start it. That may reset the VATS system temporarily. If it does not, then you will need to get the vehicle to your local technician or have a mobile tech from YourMechanic diagnose your vehicle’s starting issue.

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. starts then cuts right off and security light flashes twice.

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 hit a pothole turn and my turn signal doesn't work

Hi and thanks for your question. On the Impala's the speed sensors on the hubs to the vehicles wheels are in the same circuit with the turn signals. This tells the computer that the vehicle is turning with the steering...

Q: Car starts up but stalls and the traction slip symbol comes on. What can cause this?

Hi there. Remove the battery cables and let the vehicle sit for about 30 minutes with no power. Then hook up the battery cables and turn on the key. Let the vehicle sit for about 1 minute. This will allow...

Q: Engine is possibly ceased up.

Hi there. If you are able to crank the engine over and the engine does turn over, then the engine is not seized up. However, if the engine hesitates as its turning over, then the timing belt may have either...

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...
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...
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...