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barney9304 03-08-2011 06:39 AM

Remote locking
I have done a search on this topic, but no one gives a definite answer.
My key fob operates the alarm, but the door locks sound like a dying goose and will not open the doors, this has to be done manually with the key.
The passenger side doors have to be opened by me from the inside.
What do I need to do to fix this, do I need all four door locks changing or only the drivers or the passenger as well?
is there any step by step guides to doing this with pictures?

Frango100 03-08-2011 07:10 AM

Re: Remote locking
Does it make any difference if you use the door mounted lock/unlock switches? Would be strange that all power lock motors would die at the same time. If they still make some noise when locking/unlocking, at least there is (some) power going to them. I would first check the fuse to see if its making good contact (no corroded contacts).

barney9304 03-10-2011 02:31 PM

Re: Remote locking
The switch inside the car locks the doors and unlocks the drivers door.
The key fob locks the doors but will not unlock them.
I dont seem to have any fuse box in the passenger side.

Frango100 03-10-2011 09:00 PM

Re: Remote locking
And what happens when you use the passenger side lock/unlock switch? The control logic for the door locks is inside the Passenger Door Module. Since locking works ok, the fuse must be ok as well. Its placed in the Power Distribution Center under the hood (just besides the battery).
The Driver Door Module only switches the drivers lock/unlock motor. This one seems to be working fine.
The Passenger Door Module sends the signals to all other lock/unlock motors. So the problem could be in this module. Its placed behind the passenger door cover. A weak point are the wires which run through the rubber door boots. Sometimes one breaks and can stop several systems. I would start with this last point. Remove the rubber boot from the passenger door and carefully check the wires in the boot.
The remote opening receiver is also in the Passenger Door Module, but since the doors lock normally, this one should be ok. The Driver Door Module and Passenger Door Module are connected to each other via the PCI data bus. So if you have the availability of a DRBIII scan tool, you could also troubleshoot the system from that way and most probably pinpoint the problem.

barney9304 03-12-2011 05:07 AM

Re: Remote locking
The passenger side door lock, locks all the doors but only opens the drivers side rear door, all other stay locked.
The fuses are all ok, now I am stcuk with what to try.:confused::confused:

Frango100 03-12-2011 07:08 AM

Re: Remote locking
Thats quite a hard one. There is one lock driver and one unlock driver circuit in the Passenger Door Module. So if the drivers side rear door still unlocks, then the driver circuit is ok. In your first post you said that the lock motor seems to be dying, so they all make some kind of noise without unlocking? If so, then there is or something wrong with the respective lock motors, or the mechanisms have too much friction. Still strange though that you get different results when using key fob, drivers side switch or passenger side switch. Did this problem started like this, or did some part already die before? Because we could be looking into different problems in the same system.

barney9304 03-12-2011 07:22 AM

Re: Remote locking
The drivers and passenger sides get the same result as does the key fob.
They will unlock the the drivers side rear door but nothing else.:confused:

Frango100 03-12-2011 11:39 AM

Re: Remote locking
So maybe i understood you wrongly. My perception was that with the key fob, none of the doors would unlock, with the drivers side interior switch only the drivers side door would unlock and with the passenger side switch, only the rear drivers side would unlock. Now in you last message you say that with all options to unlock, only the drivers side rear door will unlock. Please be very clear with whats happening, otherwise an already complicated thing will become without any solution.

barney9304 03-12-2011 11:53 AM

Re: Remote locking
yeah my mistake.
With the fob drivers side rear door will open
with the drivers door switch only the drivers rear door will open
with the passenger door switch only the rear drivers side door will open

Frango100 03-12-2011 01:13 PM

Re: Remote locking
But do you hear the other motors make some noise as if they try to unlock? This is important to know if the power goes to the motors or not. Your power windows all work normal? Did this problem started like this, or bit by bit it broke down?

barney9304 03-12-2011 01:18 PM

Re: Remote locking
All the motors seem to work, sounds like a harsh buzz, the windows are no problem, it has had this since I got it.

Frango100 03-12-2011 07:05 PM

Re: Remote locking
Then i think the only option is to remove the door covers one by one and see whats happening behind there. It can be too much friction or the motor itself. You can test each motor by putting 12 V on the connector of the motor, to reverse it you just change the positive and negative wires to the motor.

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