Hello, recently my passenger door lock stopped working with the electronics, I could still manually lock it by pushing the tab down and unlock it by using the inside door **** though. I thought about replacing it though the price was a little high (link). It says $230 there and I found another one for $180, but forgot the link. I read that you could just replace the motor which is $7 from ebay and is 20mm Long Shaft Mabuchi Motor FC-280PC-22125. I ended up getting that and using this DIY: Door Lock Actuator - Internal Motor Replacement guide and this Repair Mini Cooper Electric Door Lock Actuator / Locking Mechanism.

I got it together only breaking 5 tabs and put it in my car with the panel off. I started to lock and unlock it and the door I 'fixed' was going opposite to the other doors! When I’d press the lock button it would unlock the fixed door and when pressing unlock it would lock it. All of the other doors worked as they should.

The motor can only go on one way, it doesn't matter which direction the worm gear goes on, I'm just not sure what reversed it. My only thoughts on it are that the brushes in the motor were wired to opposite sides causing a reverse direction. If that's the problem I'd figure it easiest to just find the power wire going to the actuator and swap it with the ground. Unless there's something else you guys think it could be. A little stumped by this one.

 

I read the below from the DYI link in your post. My guess is the polarity and spin direction need to be known. I do not know if can be simply reversed.


- Manufacturer Spec Sheet: http://www.mabuchi-motor.co.jp/en_US...fc_280pcsc.pdf
The specs on this sheet all match the motor from the MINI except for shaft length. You can also see this motor size has four options for RPM, torque, current. I pretty-much bought based on finding one of these with a long enough shaft which is how I ended up with the "-22125" model.

• Locking (?) motor: ***NOTE*** From my testing of the functionality of my motors, I discovered that the "20005" and "0301" motors used in this actuator have opposite polarity even though they have the same external dimensions. So in the same slot, one motor spins clockwise and the other spins counter-clockwise. In this case I lucked out and the Mabuchi FC-280PC-22125 motor I used has the same polarity as the broken "20005" motor that needed replacing. I will try to search for a matching motor so I can update this DIY.

 

Aren't the motors polarised? That is, if you switch the wires on the motor terminals, will it work correctly?
There are a few threads about this replacement here on the forum, most notably https://landroverforums.com/forum/di...t-thread-89068 and landroverforums.com/forum/discovery-ii-18/door-lock-actuator-dont-buy-new-one-3375

 

Passenger side runs reverse of drivers side. The brushes are what wears out on the oem motors, so two choices:

1. Swap brush holder from the new motor to the OEM one.
2. Use superlock motor in the normal lock position. The superlock motors all run the same direction as the passenger side motors. You would need to swap the worm gear off the oem to the superlock motor.

 

I've already crossed the point of no return and cut the original motor shaft too short and also JB welded the worm gear to the new shaft. I tried using the old motor brush holder with the new brushes on the new motor, but it produced the same result. I was hoping it might be part of the problem. I think I'm going to try and get a 19*7.1*2mm Copper Worm Gear and a Mabuchi FC-280PT-20150. These seem like my only options otherwise than getting a whole actuator unit.

The communicator on the original shaft was bent outward, but if that was in good condition that would've been the best path forward because I originally bought the wrong motor.

 

You need to put the new brush holder on the old motor. The new motor has an armature wound the opposite direction.

 

Ah I see. I've already JB welded the worm gear to the new shaft and chopped the old shaft too short. That's good info for someone else in a situation like I was originally whose communicator isn't warped. I figured there was something different other than the brush holder, I just didn't know what.

 

Interesting. My 03 front passenger door lock is also failing.

Future project for me for sure.

 

I'm just gonna drop this here. I still have some, need to check how many. https://landroverforums.com/forum/re...ar-lock-91740/

 

Hi Sandman614 - sent you a PM, interested in purchasing a couple of these motors. please let me know. Thanks, Tony