Power lock (English)

My 1989 735i front passenger door lock is messed up.

When I UNLOCK the doors, all the lock actuators work and unlock all doors.

But, when I LOCK the doors, all the lock actuators work except the front passenger door lock.

If the lock motor was broke, it shouldn't work at all, right?

I don't want to take the whole door apart when it might be something else. Any help?

[Edited on 11.10.2003 at 03:34 PM by Chanler]

[Andrzej]

Try to lock and then open your car with the key on the passenger's side door.Theese doors have special anti theft system and perhaps it's activated.You must turn the key a little bit harder to pass the ressistance of this system

Greetings Andrzej

[Erich]

your model from 1989 still has the old GM which was replaced by a new one from 09/91.
To make it easier I have copied something I have written earlier about the differences.
Pay attention to microswitches (how they react in the old one and in new one).


Quote


Das NEUE GM (wie von Johan gezeigt) gibt es eingebaut ab 09/91 mit der Teil Nr. 61 35 8 356 095.

Erneuerungen/Vorteile gegenueber dem Alten:

Laut Service Bulletin aus USA (deshalb ab jetzt in Engl.)

-Repeat and time interlock for headwashers, time interlock 3 min.
-headlight washing pump at fifth windshield washing after time interlock
-intensiv washing pump operating at reduced time from 3 to 2 seconds
-minimum interval for wipers reduced to 2 from 3 seconds (programmmable)
-increased wiper contact pressure during windshield washing now also provided

(Wichtig meiner meinung dieses)
-previously the GM would react opposing signals (e.g. an unlock signal while trying to lock, as with a defective microswitch) by carrying out the first command (e.g. locking, followed immediately by unlocking). Repeating the first command then results in carrying out the command, e.g. try to lock again, and locking is now carried out. This function (Asynchronious Position)is omitted in the NEW GM.
-After unlocking is performed due to crash sensor activiation, the locking command is now reactivated by double-locking with the key from either side (driver or passenger door).
-The "one-touch" operation of windows has been expanded to all 4 windows in OPENING direction. Drivers side has one touch in both directions
Sunroof is not already in the tilt position.
-switch off delay of the interior lights after entering the vehicle and closing the driver's door reduced from 20 to 15 seconds.


unquote

Next thing is, try to resynchronize your locking system.

 Read this

Next read on Johans page about

 doorlock bracket and doorlock microswitch

After you checked that all, let us know the result so that we can go to the next step.

[Andrzej]

Erich,you are unbeatable and simply perfect

Greetings from Poland
Andrzej

[Erich]

nobody is perfect.

Hoffe, das Dein Auto bald wieder funktioniert.

Off topic: im US board werden reihenweise die Getriebe repariert mit einem sogenannten "valve body repair kit".
Es gibt da wohl eine Anleitung zum DIY, die von einem Spezialisten in dem Forum (Kirt Koeller) gemacht worden ist. Dieser hat eine eigene Werkstatt. Ich versuche mal diese Anleitung zu bekommen und stell sie dann hier rein.

[Andrzej]

Ja Erich,ich habe ueber diese Metode gehoert,nur bei mir ist leider wahrscheinlich ein mechanisches Defekt durch der Aufprall entstanden und dort hilft nur austausch.Mal sehen,ob zusamen mit Heckschaden nicht ein wirtschaftlicher Totalschaden auskommt .Aber ich werde weiter bei meinem stehen,weil Deine Links sind unschlagbar und einfach ideal

Gruss Andrzej

[Bearbeitet am 12.10.2003 um 07:33 von Andrzej]

After following all the help I was sent, I guess I have to replace the lock motor.

Shit! I hate taking the door apart!

But, thank you all for the help.

I just love this site!!!!!!!!

Lenny