Passat b7 sunroof doesn't work at all

**newcomer** · 08-01-2023, 10:02 AM

New update!

- Checked SCA 30 fuse on driver side and Fuse 3 from Passenger side and both are ok
- Cheked 80Amp fuse on slot 5 near battery terminal - that is fine too
- Checked the system using OBDEleven - it says below

POWER SUNROOF CONTROL MODULE
---No Signal/No Communucation

**MIG** · 08-01-2023, 02:58 PM

Next, check the voltage and ground at the sunroof controller \ motor.

Here is what it looks like.

2012-2014 VOLKSWAGEN PASSAT B7 SEDAN UPPER SLIDING ROOF SUNROOF GLASS MOTOR OEM | eBay

And here is where it's located, Red 12v, brown Gnd

Removing And Installing Sliding Sunroof Motor - Volkswagen Passat 2011 Workshop Manual [Page 245] | ManualsLib

If you have voltage at that connector, it would most likely be the controller that's built into the motor; other tests to confirm need more advanced tools than just a multimeter.

**newcomer** · 08-01-2023, 03:47 PM

Thank you. What's the volatahe reading I should expect

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**newcomer** · 10-01-2023, 05:09 PM

Managed to open up. Noted on the brown earth. Which red wire should I check the voltage against?

Thank you for all the help

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**Hillbilly** · 10-01-2023, 05:43 PM

Try each one to earth

**newcomer** · 10-01-2023, 05:47 PM

Thank you for the advice. Brown being the earth, which wires should I try from? Is the big connector with multi coloured wires

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**Hillbilly** · 10-01-2023, 06:12 PM

Originally Posted by newcomer

Thank you for the advice. Brown being the earth, which wires should I try from? Is the big connector with multi coloured wires

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From your questions I suggest you take it to a car sparky and get it done properly before you short something out

**newcomer** · 10-01-2023, 08:14 PM

Hey everyone thank you so much for your guidance. At the end , I found the culprit!

This clip was unhooked . I simply pushed it back in and now the sunroof started cranking. The shade opened . Probably will play around tommrow morning and figure it out more

Thank you all

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**MIG** · 10-01-2023, 08:50 PM

I was going to say that connector looks a bit unplugged; great work!

Might it of been unplugged on purpose to hide another issue? Check all functions and leak test before celebrating