Hello everyone,
I have a Z4 E85 with an M54 engine from March 2003, and with both keys I started experiencing problems where the doors would intermittently not open or close; the batteries in both keys are fine, so the issue points to the GM5 module. I replaced both relays in it (GM5RD E85 BMW 61.35-6919275), but something must have gone wrong during soldering, because after reconnecting it in the car everything worked as it should except for locking and unlocking the doors or the boot, neither with the remote nor with the central unlocking button on the centre console. With the key slot in the door, the door could be opened and closed, but the passenger door lock did not respond. The original part is no longer available and has been replaced by part number 61.35 9 116 445. I found a used GM5 Star 12 LOW with this same part number from a donor E46 and installed it in the car. After synchronising key 1 first, then synchronising key 2, everything works correctly with key 1; key 2 does everything except lock the doors with the middle button. With both keys, pressing the open button a second time also opens the windows and the roof. You might think the small switch on the circuit board on key 2 is faulty, but after testing it seems to be fine. If I then synchronise key 2 first and then key 1, the latter does nothing at all, while with key 2 only opening the doors and the boot works, the lock button does not work.
Is the problem still with key 2, or does the GM5 need to be coded?
Anyone have an idea?
I have a Z4 E85 with an M54 engine from March 2003, and with both keys I started experiencing problems where the doors would intermittently not open or close; the batteries in both keys are fine, so the issue points to the GM5 module. I replaced both relays in it (GM5RD E85 BMW 61.35-6919275), but something must have gone wrong during soldering, because after reconnecting it in the car everything worked as it should except for locking and unlocking the doors or the boot, neither with the remote nor with the central unlocking button on the centre console. With the key slot in the door, the door could be opened and closed, but the passenger door lock did not respond. The original part is no longer available and has been replaced by part number 61.35 9 116 445. I found a used GM5 Star 12 LOW with this same part number from a donor E46 and installed it in the car. After synchronising key 1 first, then synchronising key 2, everything works correctly with key 1; key 2 does everything except lock the doors with the middle button. With both keys, pressing the open button a second time also opens the windows and the roof. You might think the small switch on the circuit board on key 2 is faulty, but after testing it seems to be fine. If I then synchronise key 2 first and then key 1, the latter does nothing at all, while with key 2 only opening the doors and the boot works, the lock button does not work.
Is the problem still with key 2, or does the GM5 need to be coded?
Anyone have an idea?
Chester
Attleborough, Norfolk
Sth. Manchester/Cheshire border
