Skip the auto shop - Our mechanics make house calls

Q: Car anti-theft lite blink and it won't let my car start

asked by on

It start sum time when the lite goes off then blink n an want start

A: Hello there, a few common faults will cause...

Hello there, a few common faults will cause the security light to remain on and the car not to start. The most common is a worn key, faulty key transponder, security module failure, or a wiring harness fault. A qualified Technician such as one from YourMechanic will be able to diagnose your car will not start issues and make any repairs required.

Was this answer helpful?

A: Hi. Anytime the anti-theft light is blinkin...

Hi. Anytime the anti-theft light is blinking, the car will be disabled and will not start. This means that there is a malfunction in your anti-theft system that needs to be repaired for this stop. Depending on your car, there are manual rests for the anti-theft system that will temporarily stop this from happening. The best thing to do is the anti-theft system fixed as soon as possible. If you need guidance having this taken care of, I recommend getting in touch with the dealer in order to have this corrected.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: No start until the gearshift is moved around in park - 1992 Toyota Cressida

If the shifter has to moved around in order to get the engine to start, then this indicates either a faulty or misadjusted gear selection switch on the transmission. In order to prevent the vehicle from starting up in drive,...

Q: Whining noise, parts keep going out

Hello. If the air compressor is faulty this will cause the engine to work harder and that may result in lower mpg. The whining noise could be caused by a bad serpentine belt, pulley, or a bad serpentine belt tensioner....

Q: How to prevent car theft after key theft

Sorry to hear that your keys were stolen. An engine kill switch would not be a bad idea to have installed. The best way to prevent the theft of your vehicle would be to have your ignition lock cylinder replaced...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...