The only part that these two have in common is the master switch.
Single door power locks not working.
To diagnose this system simply disconnect the door lock switches one at a time.
You don t want to be kicking yourself later because you missed something so obvious.
Chances are if this is your problem you have heard a buzzing sound recently.
The most likely cause of your problem is the master switch in the drivers door.
The actuator motor powers the entire door locking mechanism.
7 fixes to try if your car s power door locks won t work 1.
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If you have a single door causing you problems it is likely a bad actuator motor.
Another symptom of a potential problem with the door lock actuators are power door locks that do not function.
Replace the key fob.
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If the door lock actuators fail they will disable the power door lock feature from working.
Go to a dealer and they will.
If a single door actuator doesn t work check the wiring harness for that actuator.
The switch provides power to the door lock solenoids.
Power door locks do not function.
This will require the driver to use the key to lock or unlock the doors and can disable the power door.
If that doesn t solve the problem you may have a faulty key fob.
Usual cause the power door locks utilize individual solenoids in each of the doors that activate the door lock mechanism.
Symptom summary the power door locks are all inoperative or a single door lock is inoperative.
Single door doesn t lock unlock.
The windows and the locks are on two separate circuits.
This sound indicates the motor is going bad.
If the door locks work after removing a switch replace the switch you just removed it is shorted inside.