GO FISHING, use SLABSAUCE Fishing Attractant
Page 1 of 2 12 LastLast
Results 1 to 10 of 16

Thread: Driver door lock acting up..

  1. #1
    Join Date
    Jan 2008
    Location
    Sweden
    Posts
    572

    Default Driver door lock acting up..

    My driver door seems to be able to send the lock/open signal but not receive it.

    If I use the key in the driver door it locks/opens all the other locks incl. deadlock but if I lock/open the car using any of the locks; passenger door, rear trunk/boot it simply doesn´t lock/unlock, same thing with the remote, all but the driver door react.. And of course at the first try of locking using the other locks or the remote, the GM immediately unlocks the system again!

    All fuses are checked and good, front and rear. Syncronizing sequence doesn´t help any, neither manual or disconnecting the battery for 15 mins etc, rear harness is good and recently fixed!

    Could it be that the microswitch is fecked so that the circuit is disconnected and it doesn´t receive the signal from the other locks? Or is it the actuator thats worn down?

    Any ideas where to start?

    CD43,Style 21s,K&N Insert,White blinkers,LED 3rd brakelight,HIDs,front Monroe sportsshocks/Weitec 35 springs,540 Calipers, Zimmermann Discs and Textar pads.

  2. #2
    Join Date
    Jan 2008
    Location
    Quebec, Canada
    Posts
    608

    Default

    Quote Originally Posted by Bo525i View Post
    My driver door seems to be able to send the lock/open signal but not receive it.

    If I use the key in the driver door it locks/opens all the other locks incl. deadlock but if I lock/open the car using any of the locks; passenger door, rear trunk/boot it simply doesn´t lock/unlock, same thing with the remote, all but the driver door react.. And of course at the first try of locking using the other locks or the remote, the GM immediately unlocks the system again!

    All fuses are checked and good, front and rear. Syncronizing sequence doesn´t help any, neither manual or disconnecting the battery for 15 mins etc, rear harness is good and recently fixed!

    Could it be that the microswitch is fecked so that the circuit is disconnected and it doesn´t receive the signal from the other locks? Or is it the actuator thats worn down?

    Any ideas where to start?
    I say check the microswitch first, make sure it's not stuck.


    BMW E34 1992 525i Touring

    RIP Touring...probably never going to drive you again...

  3. #3
    Join Date
    Feb 2008
    Posts
    370

    Default

    Quote Originally Posted by Bo525i View Post
    My driver door seems to be able to send the lock/open signal but not receive it.

    If I use the key in the driver door it locks/opens all the other locks incl. deadlock but if I lock/open the car using any of the locks; passenger door, rear trunk/boot it simply doesn´t lock/unlock, same thing with the remote, all but the driver door react.. And of course at the first try of locking using the other locks or the remote, the GM immediately unlocks the system again!

    All fuses are checked and good, front and rear. Syncronizing sequence doesn´t help any, neither manual or disconnecting the battery for 15 mins etc, rear harness is good and recently fixed!

    Could it be that the microswitch is fecked so that the circuit is disconnected and it doesn´t receive the signal from the other locks? Or is it the actuator thats worn down?

    Any ideas where to start?
    when my ps door wouldn't lock (it unlocked ok tho) it was the mechanism that was all gunked-up and some wd40 followed by white grease did the trick. i couldn't tell you exactly where... i just let loose with the lube. i could see the lock button (plastic thing) struggling to move tho - if you are getting nothing at all then this might be completely useless information.

  4. #4
    Join Date
    Jan 2008
    Location
    Sweden
    Posts
    572

    Default

    Already gave it a healthy dose of WD40, no difference yet!
    Got a new used actuator from the scapyard, going to get a microswitch as well after I have checked ALL the wiring and connections from the driver door to the GM..

    CD43,Style 21s,K&N Insert,White blinkers,LED 3rd brakelight,HIDs,front Monroe sportsshocks/Weitec 35 springs,540 Calipers, Zimmermann Discs and Textar pads.

  5. #5
    Join Date
    Jun 2006
    Location
    Bethesda, MD
    Posts
    385

    Default

    Quote Originally Posted by Bo525i View Post
    Already gave it a healthy dose of WD40, no difference yet!
    Got a new used actuator from the scapyard, going to get a microswitch as well after I have checked ALL the wiring and connections from the driver door to the GM..
    my neighbors car is doing the same thing. i'm going to tackle it soon, i'll keep everyone up to date.

  6. #6
    Join Date
    Apr 2006
    Location
    Chicago, Il. U.S.A.
    Posts
    4,243

    Default

    Actuator
    What is a 525iTU-M?
    "The gas pedal wouldn't go to the floor if it weren't meant to be there"

  7. #7
    Join Date
    Jan 2008
    Location
    Sweden
    Posts
    572

    Default

    Technical Upgrade-Manual

    CD43,Style 21s,K&N Insert,White blinkers,LED 3rd brakelight,HIDs,front Monroe sportsshocks/Weitec 35 springs,540 Calipers, Zimmermann Discs and Textar pads.

  8. #8
    Join Date
    Dec 2004
    Location
    Sydney, Australia
    Posts
    4,374

    Default

    WD40 attracts dust adn debris and is a short-lived solution. Also, it easily damages plastic and other synthetic parts too. Once, I sprayed it on some bare steel nuts and bolts and put them in a drawer They were the only ones I had that went trusty within a year in that drawer and some feel caution is warranted with the stuff.

    I usually remove the mechanism, clean it with a rag, brush and replace the worn bits. Then dust all moving parts with high-temp grease and powdered graphite. between the bad bits. Where you can't get to can require a good spray w/ WD40, but it should be wiped as dry as possible. The doors get dirt in em and this is not something to do too often, its too much like hard work.

    Join the Aussie
    540i LE yahoo forum

    08/88 535i e34 M30+miller MAF, 'stiens, tints & teeth!

  9. #9
    Join Date
    Jan 2008
    Location
    Sweden
    Posts
    572

    Default

    Well, today it seems that my driver door decided to "oh well lets work for a while again till he thinks that I´m alrite and then go bust for 2 months again"

    So for now all my central locking problems are gone and all is summerly well!


    Thanks for all your input and I think I´ll clean out the WD40 a.s.a.p.

    CD43,Style 21s,K&N Insert,White blinkers,LED 3rd brakelight,HIDs,front Monroe sportsshocks/Weitec 35 springs,540 Calipers, Zimmermann Discs and Textar pads.

  10. #10
    Join Date
    Dec 2003
    Location
    Minneapolis, MN
    Posts
    577

    Default

    Quote Originally Posted by 525i winter driver View Post
    when my ps door wouldn't lock (it unlocked ok tho) it was the mechanism that was all gunked-up and some wd40 followed by white grease did the trick. i couldn't tell you exactly where... i just let loose with the lube. i could see the lock button (plastic thing) struggling to move tho - if you are getting nothing at all then this might be completely useless information.
    I've also had some temporary success using those anti-freeze cans that squirt right into the keyhole. Think they're like 50 cents at Wal-Mart.

Page 1 of 2 12 LastLast

Similar Threads

  1. Replies: 1
    Last Post: 05-22-2009, 11:10 PM
  2. boot lock actuator acting funny
    By finalanarchy in forum 5 Series BMW
    Replies: 3
    Last Post: 05-03-2008, 12:43 AM
  3. Drivers door lock acting up
    By NielsGalan in forum 5 Series BMW
    Replies: 5
    Last Post: 11-04-2007, 02:54 PM
  4. Driver door lock cylinder(?)
    By sisk61 in forum 5 Series BMW
    Replies: 0
    Last Post: 08-14-2005, 05:35 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •