Q: Security light coming on

asked by on

When I try to start my car, the security light comes on, and my car won't crank. I took it to a mechanic who said it might be my body control module, so I might need to reprogram my keys. I had my steering column replaced three years ago and I received two new keys at that time.

These vehicles have an anti-theft feature that makes it difficult, if not impossible to start the car without the proper key. While the mechanic is convinced that it is the body control module, which sounds likely, I would have the car accurately diagnosed by a certified mechanic, such as one from YourMechanic, to find the root cause of your no-start problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Security light coming on

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: Q: Fuel pump

Immediately upon turning the key to the "on" position (NOT start position), you should clearly hear the fuel pump in the fuel tank momentarily "whirrr" as the pump pressurizes the fuel system. If you don't hear the pump "whirrr" momentarily,...

Q: Ticking when car starts up but then fades away after minutes.

Hi there. Sometimes an engine will tick when it's first starting due to a lack of lubrication on top of the motor. The ticking sound is commonly caused by opening and closing valves or rocking arms. This could mean the...

Q: Antijacking component

The anti-theft system may be experiencing a fault and in most cases will store a code pointing to the problem component. I recommend having a technician experienced in vehicle electrical systems check the vehicle and read fault codes. They will...

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...
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...
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.