otzi
New Member
Posts: 21
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Post by otzi on May 4, 2023 8:12:05 GMT
Hello guys
I was thinking about adding lock/unlock switch on the passenger side door. I think this modification should be quite low cost and easy to do. What I found out so far is that below parts are needed: - 8V1962107 switch - 8K0973754A 4 pins connector
- wires - 4 crimp pins
I also compared long coding of driver side door's module vs passenger side and looks like there is only one bit that should be changed (byte 2, Lock/unlock button bit).
The only think that seems to be missing is wiring. My passenger door module is 5Q0959592E and I guess wires from the lock/unlock switch should be connected somewhere to the 32 pin connector in the door's module. Is there any chance that some of you will know and share how the connection should look like? I know that I just could remove the trim from driver's door to check it, but I rather prefer to do not do this if unnecessary to avoid e.g. breaking the latches/hitches etc.
I have also one side question, but as I am going to do some work on the passenger door, I would like to clarify it. It is related to passenger side door's module. Some time ago I bought module 5Q4959592E as I planned to install it to get properly working mirror dip function. This 5Q4 module version, as far as I understood has some memory capability, which my currently installed module 5Q0 is missing. After replacing 5Q0 with 5Q4 it is expected that right mirror should return to its original position after switching from reverse to drive and exceeding speed ~15km/h. Do you happen to now if it is just simple module change from 5Q0 to 5Q4 and activation via Mirror dip app? Or maybe some additional wiring is needed? Right now my mirrors are heated, electric folding, with lane change assistant and with photo chrome glasses, so they have wiring that is needed for the mentioned features.
Thanks!
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Post by dv52 (Australia) on May 5, 2023 1:44:11 GMT
Here's how the lock/unlock button on the passenger door is wired:
Of course it's entirely your choice - but if this was my project, I would hook-up a temporary arrangement as proof-of-concept before I threw my hard earned dollars at the OEM parts. Notice that the activation mechanism for the lock/unlock button is a pair of simple single pole, single throw switches.
If I'm reading the wiring diagram correctly, J387 initiates a CAN message to the central electrics module to toggle the central locking system whenever pin #28 is earthed. My hunch is that the important part of the earthing process isn't the actual earth voltage - but rather it's the change-of-state of pin #28 to earth potential (i.e. called the "edge" volts)
Pin #13 on J387 is a handshake signal - meaning that it illuminates the LED whenever the central-locking toggle message is initiated. And finally, pin #4 provides background lights to the button - this pin should already have a wire connected to service the existing background lights for the window up/down button
So, if this was my project, I would first make the required coding changes to the passenger door module. Then I would connect a temporary wire and earth pin #28 on J387. Does the central-locking toggle operate? If so, buy the OEM equipment
Don
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otzi
New Member
Posts: 21
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Post by otzi on May 5, 2023 8:11:39 GMT
Hello Don Thanks a lot for your another great answer. Once I find some time I will do this modification, as now having the wiring, it seems I have everything what is needed. Regarding the OEM parts, I am going to buy used parts, so it should cost around 10 Euros, not so bad Regards!
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Post by nah33d on Jun 23, 2023 9:18:22 GMT
I have now retrofitted this to my rhd UK vehicle only issue looks mint. I like how it locks and unlocks cheap easy retrofit. Parts bought from AliExpress and wiring done via spare door loom. Check you have a good ground too.
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