central locking e34 1990

[devid M50]

Hello guys
Central lock. locks and unlocks at the same time,
Where could the problem be?
Has anyone faced the same problem??
What's the solution!!
The car is not locked now

[shogun]

well known problem, Asynchronous Position of sensors, General Module defective or water in that area under rear seat and contacts are corroded, door lock sensors not working.
I would check first under the rear seat if there is moisture/water, maybe the sunroof drain got clogged and caused a small 'swimming pool' there under the rear seat, we all know it happens.
Resetting the GM also sometimes helps.
SUBJECT: New General Modules (GM)

MODELS: 7 Series (E32), 5 Series (E34) - Vehicles produced 9/91 and later
Situation: New general modules have been used in production since September 1991 in all E32 and E34 models. The software has been completely revised (details of these revisions are found in the attachment to this Service Information Bulletin). Part numbers have been changed to reflect these revisions, as listed below, as of September 1991. Model Part Number
E32 61 35 8 356 095,
E34-up to 61 35 8 356 095 9/91 production
E34-9/91 and later production 61 35 8 355 812
Note:
E34 vehicles produced 9/91 and later have different central locking system components from earlier E34 vehicles; therefore, P/N 61 35 8 355 812 is used only in E34 vehicles produced 9/91 and later, P/N 61 35 8 356 095 can be used in E34 vehicles produced prior to 9/91, and in all E32 vehicles. When the general module is connected to the vehicles electrical system, it will recognize (and store in memory) the vehicle configuration, such as:
- with/without power windows
- With/without power sunroof
- with/without wiper contact pressure control
- with/without headlight washers
Important Information
All general modules must be plugged in only after disconnecting the vehicle's battery. If the vehicle's battery is connected when the GM is installed, undefined signal contacts can cause an incorrect vehicle configuration to be stored, resulting in the impairment of
one or more of the above-mentioned systems. If one or more of the GM functions are impaired in this matter, the GM can be "cleared" by disconnecting the vehicle's battery for at least ten seconds.

GM Function Changes E32/E34 (Beginning with 9/91 Production)
- Repeat and Time interlock for headlight washers:
· Time interlock: 3 minutes
· Headlight washing at fifth windshield washing after time interlock.
- Intensive washing pump operating time reduced from 3 to 2 seconds
- Minimum interval for intermittent wiping is programmable down to 2 seconds (previously 3 seconds)
- Increased wiper contact pressure during windshield washing cycle is now also provided during dry wiping portion of the cycle (previously only during washer pump operation).
- Previously, the GM would react to opposing signals (eg., an unlock signal while trying to lock, as with a defective microswitch) by carrying out the first command, then the opposing command (e.g., locking, followed immediately by unlocking).
Repeating the first command then results in carrying out that command (e.g., try to lock again, and locking is now carried out).
This function ("Asynchronous Position") is omitted in the new GM for all E32 models and E34 models prior to 9/91 (P/N 61 35 8 356 095), and remains in the new GM for E34 models after 9/91 (P/N 61 35 8 355 812) only for central locking commands "lock" and "double-lock".
- After unlocking is performed due to crash sensor activation, the locking command is now reactivated by double-locking with the key from either the driver's or passenger's door.
- The "one-touch" operation of windows has been expanded to include all four windows in the opening direction. The driver's window still has "one-touch" operation in both opening and closing directions. Interruption of the "one-touch" feature of the driver's window in the closing direction is still accomplished by depressing any window switch (in any direction), or by depressing the sunroof switch in the "tilt" direction (provided the sunroof is not already in the "tilt" position). Interruption of the "one-touch" feature of the sunroof in the closing direction is still accomplished by depressing the sunroof switch (in any direction).
- The switch-off delay of the interior lights which occurs after entering the vehicle and closing the driver's door has been reduced from 20 seconds to 15 seconds.

also try resync http://www.bmwe34.net/E34main/Trouble/Locked.htm

[devid M50]

Hi this is a GM unit and it works with all its functions
Only the locking unit of the driver's door and passenger door.
The problem now is that it closes and opens at the same time.
Do I have to replace the GM unit?


gm.jpg

[south42]

I have a gm unit


Andy

[shogun]

probably not a GM problem, but asynchronous position of door sensors, check all the door sensors and micro switches, see ETK and for example here from E32 http://bmwe32.masscom.net/johan/door...croswitch.html
also quite often on the driver door the wire loom breaks between A-pillar and door

[devid M50]

shogun

Thank you, but I didn't find the problem, it just doesn't work, and sorry for the late reply

[Kamz e34]

I got this problem in my e34. Sometimes when i lock the car it unlocks after and sometimes when i lock it only the driver door lock. So i installed an aftermarket alarm and installed it so it protects my car and open and close without problems