Q: Front doors not locking with fob.

asked by on

I have two things wrong with my car. First off, when I press the fob I can hear the rear doors locks, but not the front doors. From the front door arm controls, the back door locks work but not the front doors. I have to manually lock the passenger's side door and use the key to lock the driver's side front door. Second, I have two warning lights on the dashboard: Check Tire Pressure and the Air Bag light.

The front door lock actuators are controlled by the their respective door switch units. The rear lock actuators are controlled by the Body Control Module. When the key fob is pressed to lock or unlock. The Body Control Module receives the request and then locks/unlocks rear doors and sends a signal to both the drivers door and passenger front door switch assemblies over a computer data line to lock/unlock front doors. Since the rear door locks are operating, one of two things is happening, either the door lock/unlock request is being interrupted on the computer data line or the Body Control Module is not sending the request to lock/unlock doors to the data line. One way to see if the problem lies with the data line or the Body Control Module is to try to lock or unlock all doors from the driver’s door switch. If the rear doors do not lock/unlock then the data line to the Body Control Module is open and will need to be traced to locate the open circuit and repaired. You may want to enlist the help of a mechanic, like one from YourMechanic who can scope out the data line to see if the signal is being interrupted and to locate and repair the open circuit.

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. Front doors not locking with fob.

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: What does the Service Airbag message mean?

The Service Airbag message can appear on the driver information center (DIC). The DIC displays this alert when there is an issue with the airbag system. You should have the airbag system fixed as soon as possible.

Q: I was driving and there was a big clunk do you know what it could've been?

Hi there. From the description you have provided, a loud clunk while stopping on a hill and no noise driving home is difficult to say what it could've been. It could be the driveshaft slip-yoke binding. This is challenging since...

Q: Q: Knocking sound

Hi there. A knocking sound that progressively gets worse as the vehicle accelerates is typically caused by wheel bearings that are damaged, wheel weights that are hitting against a brake caliper, or ball joints that are failing. In order to...

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...
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...