Viano W639 Rear sunroof help!!

Gareth Steeples

New Member
Aug 26, 2020
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Your Mercedes
Viano Ambiente 2.2
Hello everyone, I wondered if anyone could help me with a question regarding my rear pan roof.

I purchased the vehicle with the rear sunroof switch missing - after a long time searching I have finally sourced the correct switch from Northside van and truck.
However, after removing part of the middle
Headlining to fit the switch, I’m left with 2x wiring looms which don’t connect into anything? One goes to the motor and the other is connected to the loom that plugs into my new switch - both larger connectors but no where for them to connect too? Am I missing some sort of module? Would appreciate any help / guidance. Many thanks

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