Does you BMW E39 5-series or E53 X5 have door lock problem from the key fob and the central locking button? Do the interior lights not turn on when you open the door? You need my GM3 Repair Service

BMW GM3 Wiring Description for E39 5-series
These are taken from the E39 wiring diagram. I have noticed many differences between the GM3 used in the E38, E39 and E53 (X5) as well as between the different years.

For the BMW GM3 Wiring Description for E53, X5

I offer a repair service for GM3 modules that have the common problem of no door locks (front or rear) from the key fob or central locking button and no interior lights when a door is open.---> GM3 Repair Service This problem is NOT the relays or the BTS430K2 so you can stop thinking about replacing them in hopes that it will fix the problem. Relays RLY3, 4 and 5 do control the door locks, but, they only control the rear doors. The front door are controlled by PM modules located in the doors. Relays RLY1 and RLY2 control the rear windows. Again, the front windows are controlled by PM modules located in the doors.

Various GM3 Part Numbers

Pin	Function on Connector X254	Wire Size/Color
1	Ground	2.5 BR
2	MFFHA - Window Motor Left Rear-Open (from RLY2)	2.5 BL/GR
3	MERHK - Unlock Trunk Lid	2.5 GE
4	KL30 - Fused +12V in	2.5 RT/GR
5	MFBHA - Window Motor Right Rear-Open (from RLY1)	2.5 BL/VI
6	MVR - Signal Lock	2.5 WS
7	(from U7)
8	Ground	2.5 BR
9	SERV1 - Servotronic Control (from U1)	0.5 SW/WS
10	KL30 - Fused +12V in (powers U1-6 among other things)	2.5 RT/VI
11	SERV2 - Servotronic Control	0.5 SW/RT
12	MFFHZ - Window Motor Left Rear-Close (from RLY2)	2.5 SW/GN
13	MZS - Door Lock Motor Rear Doors	2.5 SW
14	MER - Unlock Signal Door Lock/tank Flap Motor	2.5 BL
15	MFBHZ - Window Motor Right Rear-Close (from RLY1)	2.5 SW/BR
16	Unknown (from U7)
17	DWAH - Horn Signal Anti Theft (from U3)	0.5 SW/BL
18	WP - Signal Washer Pump (from U2)	1.0 SW
19	VA - Signal Consumer cut-off (from U6)	2.5 RT/GE
20	IB - Signal Interior Lights (from U4 & U5)	2.5 RT/BL
	7 & 16- Not Used

Pin	Function on Connector X332	Wire Size/Color
1	KL30 - Fused +12V in	0.75 RT/GR
2	SIB - Interior/Reading Lamp Front	0.35 BR/GE
3	SWA - Windshield Washer Switch	0.35 BR/VI
4	SW2 - Windshield Wipe Signal 2	0.35 SW/WS
5	SW1 - Windshield Wipe Signal 1	0.35 SW/BL
6	TKBH - Signal Door Contact Right Rear	0.35 BR/WS
7	TKFH - Signal Door Contact Left Rear	0.35 BR/GR
8	TKBF - Signal Door Contact Passenger	0.35 BR/RT
9	Signal Unlock Lift Gate Lock Switch	2.5 RT/SW
10	DSIR - Intensive Wash Control	0.35 SW/GE
11	HKK - Trunk Lid Closed Signal	0.35 GR/BR
12	K--BUS - K-Bus Signal	0.35 WS/RT/GE
13	FBZV - From Antenna Amp for Keyless Entry	0.35 WS/GE
14	Ground	0.5 BR/SW
15	SFFHZ - Signal Close Window LH rear switch	0.35 GR/BR
16	SIR - Intensive Wash Signal Wiper/Washer Switch	0.35 SW/GR
17	SFBHA - Open Window Signal RH rear switch	0.35 GR/BL
18	SFBHZ - Close Window Signal RH rear switch	0.35 GR/GE
19	SCAO - Soft Close Automatic Unlock Signal	0.35 GE/SW
20	RSK - Signal Wipers in Motion	0.35 BR/GN
21	TOEHS - Trunk Lid Open Signal Rear Window Servo opening switch	0.35 BR/RT
22	Signal Locked Lift Gate Lock Switch
23	KLR - Fused +12V in	0.5 VI/WS
24	TZV - Signal Close Global Locking Switch	0.35 GE/RT
25	P--BUS, P-Bus to Front Door PM Modules	0.35 BL/RT
26	SFFHA - Signal Window Open LH Rear Switch	0.35 GR/SW

Pin	Function on Connector X253	Wire Size/Color
1	TKFT - Signal - Driver's Door Contact	0.35 BR/WS
2	Signal - Engine Hood	0.5 BL/RT
4	RDDWA - Tire Pressure	0.35 BL/GE
5	INRS - Interior Protection	0.35 SW/WS
6	Interior Protection	0.35 GR/BL
7	??Wiper-Washer Control	??0.35 SW/GR
8	NG - Vehicle Tilt Sensor	0.35 GE/RT
10	TOEHK - Signal - Trunk Lid Open	0.35 GR/GE
11	TOEHKI - Signal - Trunk Lid Open	0.35 GR/BR
12	EKSFH - Window Pinch Strip Left Rear	0.35 BR/GE
13	CA - Signal - Crash from Airbag Module	0.35 GR/BL
14	Drive Away Protection	0.75 SW
15	WI1 - Wiper Control I - Wiper Relay	0.35 BR/BL
16	WI2 - Wiper Control II - Wiper Relay	0.35 BR/WS
17	SRA - Headlight Wash Control	0.35 BL/SW
18	IP - Intensive Wash Control	0.35 BL/GE
19	DWAL - Rear View Mirror Alarm LED	0.5 WS/SW
20	ST - Tilt Sensor	0.5 BL/RT
21	ANLE - Soft-close motor signal Close (from MY04)	0.5 WS/BL
22	RERKH - Relay Unlock trunk lid	0.5 WS/RT
23	DFAHL - Signal - Speed	0.35 BR/RT
24	EKSBH - Window Pinch Strip Right Rear	0.35 BR/GE
25	SWINT - Intermittent Wiper Voltage Supply	0.35 SW/GN
26	Ground	0.5 BR/SW
-	3, 4, 9, Not Used	-

 

 

On the E38 7-series the fuses are located in the e-box under the hood on the left hand drive cars and in the glove box on the right hand drive cars.

 

Color Code	Color
SW	Black
BR	Brown
RT	Red
GE	Yellow
GN	Green
BL	Blue
VI	Violet
GR	Gray
WS	White

Wire Size (mm2)	Aprox. AWG equivalent
0.35	20
0.50	18
0.75	16-17
1.0	15-16
2.5	11-12

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