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I've done some searches but can't seem to find anything similar. One of my rear doors will not lock all of the time with the key fob. It will always activate the alarm with the usual flashing lights to show it is armed, but you can walk right up and tug on the handle and it opens right up. Other times it actually locks. There are times when I am driving, I pull away from a stop, and I can hear the door lock at about 8 mph or so (same door with issue). So I'm not sure if the actuator is going out, or if there is something screwy with a control module. I can plug in the Durametric but get no faults.

Anyone experience something similar?

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When you use your key (physical key in the door lock) does the same issue occur? Which rear door? Behind driver or passenger (US or UK vehicle?)

The 8mph locking issue may be tied to your settings -- you can disable the auto-lock-at-speed feature. Be sure it's disabled and see if the issue resurfaces. (It's triggered at 4mph, not 8mph, but it always seems to take place when going faster then 4mph to me.) See attached page from the '04 Manual, p. 109.)


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I have no issues with the self locking once it's moving. The door in question is the driver's side rear and it's a US model. But here's more data:

I rolled down the driver's window and tried both the keyless remote and the door lock switch on the driver's door (interior). Neither lock it. I popped the little rubber grommet out of the door (rear) on the inside and it locks/unlocks manually with no issues. Also, the remote and the driver's switch will always unlock it (if I lock it manually first). So I'm thinking either a frayed wire (because it works sometimes) or the controller on the lock mechanism/solenoid is going bad.

Edited by the head
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