BMW PM-BT module web page
Last updated November 10, 2016


Connector numbers above not in paren are driver door connector numbers and those in paren are passenger door connector numbers.

The PM modules is used on cars that use the BMW GM3 module like the E38 7-series 1994-2001 and E39 5-series 1995-2004. The E53 X5 also has a set of PM modules, but, they are integrated with the door control panels and look nothing like picture above.

On these cars there is one PM module in each of the Front Doors. The driver's door has PM-FT module and the front passenger door has a PM-BT module. 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.

Sometimes the solid state drivers blow up, like this one below.

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 ($460.55 at ECS Tuning or $474.65 at getBMWparts.com)
61356924934

E39 5-series (passenger side) P/N
61358375684 up to 09/98
61358376064 up to 09/98
61358378761 up to 05/99
61356904242 ECS no longer available, getbmwparts $474.65
61356904243 (1995-1998, 1999-2001)

For cars with fold in outside mirrors, P/N
61358375682 -> 61356904243


Pin
 Function on Connector X1128 (X1130)
1
 Mirror Motor Drive
2
 Mirror Motor Drive
3
 Mirror Adjust Signal
4
 Mirror Vertical Adjust
5
 Mirror Heater Drive
6
 Mirror Horizontal Adjust
7
 Mirror Heater Return
8
 Microswitch Ground Supply
9
 Mirror Hinged In Signal
10
 Mirror Potentiometer Horizontal
11
 Mirror Potentiometer Vertical
12
 Mirror Potentiometer Positive
Pin
 Function on Connector X1129 (X1131)
1
 Door Unlock Motor (MER)
2
 Memory Switch
3
 Switch Open Window
4
 Nighttime Illumination
5
 Memory Switch
6
 Door Contact Signal
7
 Door Lock Signal
9
 Door Unlock Signal
10
 Door Lock Motor (MVR)
11
 P-Bus
12
 Switch Close Window (nu)
13
 Memory Switch
14
 Nighttime Illumination to memory switch
16
 Motor Position Signal (Door Lock)
17
 Jam Switch (Pinch Protection)
18
 Memory LED
8, 15
 not connected
Pin
 Function on Connector X887 (X889)
1
 Power +12V In (fuse 31 E38)
2
 Ground
3
 not connected
4
 Window Motor Close
5
 Window Motor Open

 

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. Click on the link to find out how to order one. If you don't feel comfortable soldering I can install the relay for $45 including Priority Mail return shipping (within the US only). Contact me at scott@bmwgm5.com

General Module 3

General Module 4

RMIV Module

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