Skip the auto shop - Our mechanics make house calls

Q: Automatic locks on my car are locking/unlocking on their own

asked by on

I have automatic locks on my car and all of a sudden today, the car started locking and unlocking by itself. I walked away from the car and could hear the locks clicking up and down. Do you know what this could be?

A: The body control module controls the lockin...

The body control module controls the locking function. If there is a conflict in one of the door locks that tells the module it is not closed or not locked, the module will cycle the locks. First, try replacing the remote battery to be sure it is not causing the issue. The remote should also be checked for stuck buttons. If the problem is still active, then a scan of the body control module using a factory style scanner can isolate the cause of the problem. It may be the module or one of the door latches. A certified mobile mechanic from YourMechanic can provide this service at your home or office.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: I lost my key and remote - can I program a new key myself?

Hello - unfortunately no. Modern electronic-key security systems differ from one manufacturer to the next, and each has specialized equipment for programming and setting options on remotes and electronic keys. This equipment is also not usually available to non-dealer service...

Q: Can't get to bat terminal bolt on starter

Hey there. Thanks for writing in. My knuckles feel your pain, as I had this same problem a few weeks ago with an Acadia. In order to get to the starter bolts I had to remove the left side catalytic...

Q: New car battery drained.

Hi there. The most obvious reason that your battery is being drained quickly would be a defective switch in the visor that is intermittently staying on. Most of the visors have a small pin switch that could kill your battery...

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...
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...