Instructables

Repair Mini Cooper Electric Door Lock Actuator / Locking Mechanism

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This instructiable details how to repair a Mini cooper door lock actuator. I did this to my 2003 mini cooper s. I was sick of reading about the countless number of people who have been forced to replace this poorly designed component with a new one ($130) because BMW made them "non-serviceable". This unit IS SERVICEABLE - if you are clever enough ;)

I would also like to thank the guys over @ NAM (northamericanmotoring.com).

~enjoy

 
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Step 2: Remove Door Panel

Best to disconnect battery first.


Instead of "re-inventing the wheel" - check out this guys video: http://www.youtube.com/watch?v=wC0ciLIp6YY

Note that - the clips holding the panel on are pretty robust. there are three clips on the left side, right side and bottom that all pull srtaight out. The clips on the top also pull directly out from the door - not "up and out/' like they say in the video.


goldenshuttle6 months ago
wawoo; look at the cheap plastic end motor they use. exactly like the motors we find in children toys that break easily. I cannot believe car makers go so low to save cost. At least they should have put a full metal body motor for longer life. Thanks to poster, good subject though.
Jsantoyo6810 months ago
Thank you for your instructable, my 2005 mini cooper had the exact problem your door lock had. I have it back together and functioning.
rejean-racine111 months ago
Thanks, you did a realy good instructable. with your help i fix my lock on my 2005 mini.
but on my case all 3 coper contact were appart. so i carefuly unsold the wire and put a new one from another small 12 v motor that i use in slot car racing .wen you do that the timing betewen the 3 coper blade is important so refer to small electric motor timing to alling propely with the magnet and carbon brush.
mgkadijk1 year ago
Thanks for the post. I followed your instructions and repaired my 2004 Mini Cooper door lock actuator. I would just say that it is important to note the position of the gears and motors as you are disassembling. I didn't and had to take it apart a second time after it didn't function after the first test. When you are actuating those little motors up and down, you can get lost as to which way it should be.

It has been at least 2 months since I repaired mine, and it is still functioning.
MolecularSandwich (author) 2 years ago
It has been about a month and everything is still working well!
oakback2 years ago
Nice! My rear door lock actuators on my Mazda 5 are all but dead, but I was dreading taking them apart. I'm sure all door lock actuators have a lot in common, so I'm sure this will be helpful when I decide to tackle it.

Where is a good place to buy the little motors, if necessary?
MolecularSandwich (author)  oakback2 years ago
Its been my (limited) experience that generally you can repair most electric motors. As for a replacement - I woudl look to source a motor from another actuator - it is very tight in those cases and hacking one to fit would not be easy. Good luck!