Skip the auto shop - Our mechanics make house calls

Q: Can't start car due to security system

asked by on

My car will not start because of the security system. It is not letting it bypass the security. I had to replace the ignition switch, and since then the security system will not let me start the car.

A: Hi there. Your vehicle's anti-theft sys...

Hi there. Your vehicle's anti-theft system seems to be malfunctioning. A change of ignition cylinder will cause this problem because your vehicle thinks someone attempted to steal it. It is possible to bypass this anti-theft system in order to ensure the ignition side of your vehicle anti-theft system. Your vehicle's anti-theft control system maybe the problem as well. This problem is difficult to properly diagnose without having the vehicle physically present. I'd suggest having a certified mechanic look into your issue with more detail to ensure proper diagnosis.

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: Car Alarm goes off when driving - 2012 Toyota Corolla

Hi and thank you for contacting YourMechanic. Car alarms are tricky and can drive people crazy. To my knowledge, there are several ways that the car will arm the alarm with the key in the ignition. Go around the vehicle...

Q: Where could this oil leak be coming from?

Hello. You mention the power steering reservoir, so just be sure it is oil and not power steering fluid which of course would change the nature of the repair. To answer one of your concerns, if oil leaks onto the...

Q: How do I turn on the hazard lights in a 2012 Chevrolet Equinox?

The hazard warning lights are in important safety feature. When the hazard lights are turned on, all four turn signal lights will flash to alert drivers around you that your car is potentially in trouble. To turn on the hazard...

Related articles

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...
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 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...