Skip the auto shop - Our mechanics make house calls

Q: Doors not unlocking when I use key fob

asked by on

Three of the doors on my car do not unlock consistently when I hit the Lock button on the key fob.

Hi. I’m going to assume they open when using the door lock switch. First of all, pressing the fob once only unlocks the driver’s door. The fob must be pressed a second time within 5 seconds to unlock the rear doors. That is how the system is designed. So, you may just need to hit the button a second time. If this is being done properly but the doors still do not unlock, suspect a problem with door lock circuit. Looking at the wiring diagram for your vehicle, I see the passenger and rear doors use a relay that is separate from the driver’s door. My guess is that this relay is sticking, However, the problem could also be with the remote control door lock receiver (RCDLR) or body control module (BCM). When the RCDLR receives a signal from your key fob it requests that the BCM unlock the doors. A trained technician, such as one from YourMechanic, will be able to inspect the electrical components and repaired any failing parts.

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

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: Car leaks oil after oil change

I recommend having a certified technician, such as one from YourMechanic, come out to your car's location to run a diagnostic inspection of your oil leak, and suggest the best path to repair.

Q: Where is the camshaft position sensor located on a 2005 Saturn ion 2.2l?

Hi there, thanks for writing in. This engine does not have a camshaft sensor, but uses the ignition module to detect when cylinder number 1 and 3 are at top dead center using the coils internal circuits. You may need...

Q: I just need to know where the CPS is on it

By CPS are you referring to the camshaft position sensor or the crankshaft position sensor? The camshaft position sensor is located inside the distributor assembly and you are better off replacing the entire unit rather than dismantling it. In order...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.