BMW PM-BT module
The PM module is used on cars that use the BMW GM3 module like the E38 7-series 194-2001 and E39 5-series 1995-2004. I thought that the E53, X5 would use this module too, since it uses the GM3, but, it doesn't appear on realoem.com.
On these cars there is one PM module in each of the Front Door. The module is connected to the GM3 through the P-Bus. It controls the door lock, window motor, mirror motors and mirror heater. It senses the seat memory switch, door latch, window switch and mirror adjust switch and controls the appropriate motor directly and/or notifies the GM3 module via the P-Bus. If you are looking at the car wiring diagram you will see connector numbers X1128, X1129 & X887 on the drivers side door and connector numbers X1130, X1131 & X889 on the passengers side.
The window motor is controlled via a V23078-C1002-A303
relay (I sell this relay by the way) and the door lock is controlled via a Solid
State Driver IC, ST Microsystems L9947S. The GM III were made under a variety
of part numbers including the following.
PM-BT Module Part Numbers
61356904249
61356904243
61356924934 Latest P/N ($209.57
at ECS Tuning)
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If you are having problems with the power windows on 1 door, but, everything else works then it might be a bad window relay. This relays is p/n V23078-C1002-A303 relays. I sell this relay for $22.50 each plus $3 shipping within the US and $6 for shipping anywhere else in the world. Shipping is only charged on the first relay. Contact me if interested. p9019@yahoo.com. If you don't feel comfortable soldering I can install the relay for $70 including Priority Mail return shipping (within the US only).