I have the complete design for you, just waiting for you to confirm my suspicions of which version of the sunroof regulator module you have.

I will check this as soon as possible when I will be by the car. I’m really busy this week, so probably next. Big thanks for now.

 

I will check this as soon as possible when I will be by the car. I’m really busy this week, so probably next. Big thanks for now.

No hurry.

 

Thank you, I will measure this when I will have time, probably next week.

Hi there, sorry for delay, didn't have time before to measure this. Original part number of control regulator is
Here are results for each use case:

Instructions...

A) Unplug the VW "Sunroof Regulator" at the regulator. The pins on the regulators connector should have numbers 1-5 so,were molded into the regulator.

A1) connect from pin 4 and pin 5. Check all resistances at all dial positions - you should have no connections at any position if your switch is like the one in post #1.

B) put your meter in Ohms range, measure from pin 2 to pin 4 and report resistance on all the different settings of the dial switch.

C) put your meter in Ohms range, measure from pin 2 to pin 5 and report resistance on all the different settings of the dial switch.

D) measure Pin 1 to Pin 2 and report value at all switch positions

E) measure pin 2 to Pin 3 at all switch positions


F) measure Pin 1 to Pin 3 at all switch positions.

Hi there, sorry for delay, didn't have time before to measure this. Original part number of control regulator is 1J0959613E
Here are results for each use case:
A: pin 4 and 5: no readings on any position (out of range)
B: pin 2 and 4: no readings on any position (out of range)
C: pin 2 and 5: no readings on any position (out of range)
D: pin 1 and 2: full open: 0,33 kohms, closed: 1,97 kohm, tilt position: 2,65 kohm
E: pin 2 and 3: full open: 0,29 kohms, closed: 0,71 kohm, tilt position: 0,27 kohm
F: pin 1 and 3: full open: 0,33 kohms, closed: 1,97 kohm, tilt position: 2,77 kohm

Hope that this helps.
BR,

 

Can anyone comment my results? Is it possible to switch from VW regulator to MB switch?

 

OK, now there is a question because I had guessed, which may be correct, that the vw switch does the controlling..
the following set of connections is based on the description of the Mercedes switch in post #1, based on that switch controlling the motor directly. It would put both switches in parallel, allowing control from either one..
Mercedes sw pin #4 (grn) to module pin #4
Mercedes sw pin#1 (Bh/wt) to module pin #2
Mercedes sw pin#2 (blu) to module pin #5

A VERY SERIOUS CAUTION: make sure that the three connections that went to the Mercededs switch do not connect to anything else, especially not to +12 volts. My other caution is that I may have the open/close connections reversed, since they are not shown on the drawings or descriptions. Bit the connections to exchange if it is reversed are to pins #4 and #5 on the module.

 

OK, now there is a question because I had guessed, which may be correct, that the vw switch does the controlling..
the following set of connections is based on the description of the Mercedes switch in post #1, based on that switch controlling the motor directly. It would put both switches in parallel, allowing control from either one..
Mercedes sw pin #4 (grn) to module pin #4
Mercedes sw pin#1 (Bh/wt) to module pin #2
Mercedes sw pin#2 (blu) to module pin #5

A VERY SERIOUS CAUTION: make sure that the three connections that went to the Mercededs switch do not connect to anything else, especially not to +12 volts. My other caution is that I may have the open/close connections reversed, since they are not shown on the drawings or descriptions. Bit the connections to exchange if it is reversed are to pins #4 and #5 on the module.

Hi,
I tried your suggestion, but it doesn’t work. I was not able to open sunroof with MB switch. I was only able to close it once it was opened. In case when sunroof is opened it closes with MB switch whatever button i press on switch (it closes for both open and close position, so that is strange) I also tried to replace 4 and 5, but always the same results… So, the point is that I can open sunroof with VW regulator, and then I close it with MB switch (whatever button I press on switch it always close).
Is there anything else I can try?

 

Hi,
I tried your suggestion, but it doesn’t work. I was not able to open sunroof with MB switch. I was only able to close it once it was opened. In case when sunroof is opened it closes with MB switch whatever button i press on switch (it closes for both open and close position, so that is strange) I also tried to replace 4 and 5, but always the same results… So, the point is that I can open sunroof with VW regulator, and then I close it with MB switch (whatever button I press on switch it always close).
Is there anything else I can try?

That is an interesting problem. What my intention had been was to use a portion of the MB switch as a single-pole double throw, ( SPDT ) switch. My guess was that it had been arranged as a center-off reversing switch, and my intention was to use half of it. So it seems that either my guess of the MB switch operation was incorrect, or my interpretation of the VW switching control scheme is incorrect. Certainly either one is possible.
It was based on the thinking that connecting the wire tied to terminal 2 to either of the wires on terminals 4 and 5, one connection would drive the roof open and the other would drive it to close. If that is the case, then the issue is finding the correct terminals on the MB switch. If that is not what happens then more analysis is needed.

On the VW controller connections I see a variable potentiometer and a three position switch, and I had guessed that the switch was to command the roof to open in ome direction and close in the other direction. And no clue what the variable control does.

 

Hello everyone, finally it works as expected with MB switch. So, I had to bypas VW regulator and connect wires directly to the motor. Now it works in both directions and nothing happens if I fully close or open the sunroof (it disconnects motor on that positions). So, the simplest solutions are sometime the best.
And yeah, big thanks to everyone included in resolving this issue.

 

OK, and thanks for letting us know. It is still a puzzle as to why the MB switch was not able to command the VW controller to open and close, although it might be that the switch in the circuit drawing had some other function. Since the drawing had no indication as to the actual switch function, it was a guess on my part that the switch commanded open and close, maybe I guessed wrong. That has happened before.