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Thread: Door Lock Help

  1. #1
    Join Date
    Feb 2009
    Location
    Chicago, IL
    Posts
    110
    My Cars
    2004 530i

    Door Lock Help

    Hey all, my drivers side key lock for the door broke this morning. You can turn it both ways and nothing happens. I unlocked the trunk to get in to the car, but now I cannot lock the car. If I try to lock the passenger door or the trunk it just locks and then immediately unlocks...can I disable this or what can I do?

  2. #2
    Join Date
    Aug 2007
    Location
    San Francisco, CA
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    1,529
    My Cars
    1972 3.0 CSi-1988 M6
    Just bought this new driver's side lock cylinder assembly so this will serve as a good reference.





    Here is a possibility. Since your lock cylinder still turns normally, I believe the rod that connects to the lower lock assembly has come loose or worse yet, the attachment to the lock cylinder is broken. The above pic will show this part. When this rod is not actually connected to the lower lock mechanism, this may signal to the central lock system that one of the doors or trunk is not completely latched, thereby, it will perpetually lock and unlock all the locks. To deactivate the central lock system, disconnect the 30A #27 fuse. All the locks will now work independently, albeit a little more force is required to work them.

    Getting back to the rod assembly, there is a clip that locks the end pin to the lower lock mechanism, maybe this has come loose and just needs to be reconnected. Don't believe there are separate replacement parts of this complete lock assembly, therefore a whole new unit needs to be replaced if there are other broken parts that are causing your lock problem. Once again, my scenario is just a possibility! There maybe other factors involved here.
    Last edited by M6csi; 03-12-2011 at 09:48 PM.
    Bert
    91 850i-A
    72 3.5 CSi (L-jet, Getrag 265 5 speed)
    88 ///M6

    The back to back to back "BIG COUPE" trio

  3. #3
    Join Date
    Oct 2010
    Location
    Sciota, Pa.
    Posts
    633
    My Cars
    1987 BMW M6
    Agreed, the clip end of the cylinder broke on mine and you need the whole assembly that is pictured. It's a real joy to install too.

  4. #4
    Join Date
    Apr 2010
    Location
    Houston, TX
    Posts
    34
    My Cars
    1988 BMW 635Csi

    Try these links


  5. #5
    Join Date
    Feb 2009
    Location
    Chicago, IL
    Posts
    110
    My Cars
    2004 530i
    Thanks for the help...I am going to pull fuse 27 for now and figure out whats wrong...

  6. #6
    Join Date
    Feb 2006
    Location
    Columbus. IN (Indy 500 area)
    Posts
    4,693
    My Cars
    '87 635Csi & 3 MG's
    M6csi, how much did that lock assy. set you back? Is that one of the items BMW has reduced the price on?
    ______________
    It could be that the lock cylinder is broken as shown in the photo below. There is a repair cylinder available. Here are some discussions on them:

    A Discussion on the lock cylinders and re-keying them:
    http://bigcoupe.com/phpBB2/viewtopic.php?t=10979&
    http://bigcoupe.com/phpBB2/viewtopic.php?p=94241#94241
    http://bigcoupe.com/phpBB2/viewtopic.php?t=13183&

    More views inside of the door of the locks/handle:
    http://bigcoupe.com/phpBB2/viewtopic.php?t=8693&
    http://bigcoupe.com/phpBB2/viewtopic.php?t=9133&


  7. #7
    Join Date
    Aug 2007
    Location
    San Francisco, CA
    Posts
    1,529
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    1972 3.0 CSi-1988 M6
    Quote Originally Posted by CW6er View Post
    M6csi, how much did that lock assy. set you back? Is that one of the items BMW has reduced the price on?
    ______________
    It could be that the lock cylinder is broken as shown in the photo below. There is a repair cylinder available. Here are some discussions on them:

    A Discussion on the lock cylinders and re-keying them:
    http://bigcoupe.com/phpBB2/viewtopic.php?t=10979&
    http://bigcoupe.com/phpBB2/viewtopic.php?p=94241#94241
    http://bigcoupe.com/phpBB2/viewtopic.php?t=13183&

    More views inside of the door of the locks/handle:
    http://bigcoupe.com/phpBB2/viewtopic.php?t=8693&
    http://bigcoupe.com/phpBB2/viewtopic.php?t=9133&

    This is the exact area that broke on my lock cylinder. It was so bad that the lock cylinder just popped completely free from outside the car.

    I was hoping to find an used set to rekey but as most of us know, these in good condition are somewhat hard to come by. So, with the recent BMW price reductions, I took the plunge and bought a new one. At its highest point, the entire lock assembly was about $200. Bought mine at a local SF BMW dealer for $145, including sales tax, the total amount was $160. Proof of car title was needed for order. Should have ordered one from www.getbmwparts.com as one board member had recommended. Their price is slightly less than $120 with no sales tax to boot and the shipping cost should be negligible. Have to say this dealer's pricing on parts are the lowest anywhere.

    What's interesting is the lock cylinder repair kit is about the same amount as the entire lock assembly, thus, getting the repair kit does not really make much sense, both price wise and the work involved to disassemble and repair the lock assembly. Have not had the opportunity to install yet.
    Bert
    91 850i-A
    72 3.5 CSi (L-jet, Getrag 265 5 speed)
    88 ///M6

    The back to back to back "BIG COUPE" trio

  8. #8
    Join Date
    Nov 2002
    Location
    LaCanada
    Posts
    46
    My Cars
    99 bmw 540i
    to revive an old thread...

    i just had this issue with my 87 635 drivers door lock cylinder. the end which holds the L-pin has snapped off just like the pictures above. How do you know if it is a 4 or 5 key code? I have seen repair kits from http://www.ecstuning.com/BMW-E24-635...08/]ECS tuning for $18 bucks, but it does not seem to have the same end where the L-pin would attach the cylinder to the arm actuator. Will that repair kit work? If not, can anyone suggest where I may find the proper key cylinder that has the proper end for the L-pin? Are there repair kits for the 5 key code? Thanks in advance.

  9. #9
    Join Date
    Jun 2008
    Location
    Newtonburg, WI
    Posts
    803
    My Cars
    99 528iT, '78 R100RS
    To answer just the last question, once you figure out how to replace the pins to conform to the key, you'll see that not all of them are required. It may make the lock a little less secure (a pick only has to move four instead of five pins), but it will be functional. I've redone a few lock cylinders like this in the past. It's no big deal. Not a lotta people trying to steal 30-year-old BMWs.

    C.R. Krieger #53302

  10. #10
    Join Date
    Feb 2006
    Location
    Columbus. IN (Indy 500 area)
    Posts
    4,693
    My Cars
    '87 635Csi & 3 MG's
    Quote Originally Posted by chykneestweakr View Post
    to revive an old thread...

    i just had this issue with my 87 635 drivers door lock cylinder. the end which holds the L-pin has snapped off just like the pictures above. How do you know if it is a 4 or 5 key code? I have seen repair kits from http://www.ecstuning.com/BMW-E24-635...08/]ECS tuning for $18 bucks, but it does not seem to have the same end where the L-pin would attach the cylinder to the arm actuator. Will that repair kit work? If not, can anyone suggest where I may find the proper key cylinder that has the proper end for the L-pin? Are there repair kits for the 5 key code? Thanks in advance.
    No, the $18 one is for the early cars that only turn 45 deg. and don't have the deadbolt feature at 90 deg. like your '87.

    ECS Tuning has the repair kit for your car (code 1001) for $110, but they list the entire assembly as shown above in M6csi's post for only $106 !! You get the cylinder, the connecting rod, a new lock heater and I believe a new key!! That seems to me the way to go.

    I don't believe the 4 or 5 key code is an issue as Der Krieger says. There are 11 slots for tumblers and either 4 or 5 sizes of tumbler for each slot. If you get the right part number for your VIN, it should come with the right tumblers whether you get the repair kit or the entire assembly as shown above in M6csi's post.

  11. #11
    Join Date
    Feb 2006
    Location
    Columbus. IN (Indy 500 area)
    Posts
    4,693
    My Cars
    '87 635Csi & 3 MG's
    .
    I just PM'd M6csi for info on the entire assembly he bought as shown, Here is his response:



    This sure seems to be the way to go.

    Quote Originally Posted by M6csi
    Quote Originally Posted by CW6er
    Hi M6csi,

    I wounder if we could impose on you to visit a thread that is being revived about Lock cylinders where you posted a photo of a lock assembly that you bought and had yet to install and answer a few questions?

    1) Do you have the part number of the assembly? I'm not sure if the M6 has the same PN as the 635?? In any case was it referenced as "code 1001" in RealOEM as opposed to "code 5000"? I'm guessing that is the difference between later and earlier cars?

    2) Did it come with a Key? If so, was it blank or was it cut to the VIN code, i.e. did you have to send in your VIN or Registration?

    3) If it was blank, did it come with extra tumblers to match to an existing key?

    Here is the link:
    http://forums.bimmerforums.com/forum...3#post27746363

    ECS Tuning is selling the repair kit for $110 and the entire assembly for only $106!!

    Thanks in advance for you time!
    Chris Wright
    CW6er
    Hi Chris,

    Sorry for the delayed response as I don't visit the E24 forum as much as I should. To answer the questions:

    1) Yes, the lock tumbler/lock assembly is the same for all late E24s. The part # is: 51 21 1 886 521 and the lock code is 10001.

    2) No, it does not come with a key, it's keyed to your VIN. One would need to provide proof of vehicle registration under your name and your driver's license. Suppose if you order the assembly through an online retailer, then you can probably fax the documentations to them.

    The repair kit with all the nylon parts shown from ECS sure looks like the passenger side lock. I have never seen an early E24 driver's side lock assembly, therefore, I don't know whether it is interchangeable. As I stated before, for about the same amount, it does not make much sense not to buy the whole lock assembly.

    Take care,
    Bert
    Last edited by CW6er; 07-01-2014 at 02:38 AM.

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