Hello again,
Its been a year since I repaired my A4 Cab roof with this very thread, even after repairing i still come back and read the thread.
Sadly, I have a new problem. About 2 months ago the roof stalled (stopped) while opening, I switched off engine, restarted and it completed the opening and closing. In between now and then the fault appeared another 3 times. Now the roof fails to operate at all. Not even part of it moves, lifts as it did before.
Status: Faulty roof warning light flashing, When I drive it says 'roof not secure'
Action so far: Performed a manual reset, checked the motor - NO current flowing when switch is operated, cleaned the commutators anyway.
VCDS report
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Address 26: Auto Roof Labels: 8H0-959-255.lbl
Part No: 8H0 959 255 A
Component: VSG B6 CABRIO 7094
Shop #: WSC 00672 785 00200
VCID: 346CABBA54EC79BE5BD
1 Fault Found
02000 - Switch Position
008 - Implausible Signal
Not sure if this helps:
Address 26: Auto Roof ()
21:59:18 Group 001: Convertible Top Status (Actual)
Data for Convertible Top Control Switch
Group 001 Switches && Positions I
Not Switches && Positions II
Available Top Frame Position (G356)
21:59:18 Group 002
0.0 km/h Vehicle Speed
12.10 V Voltage (Terminal 30)
Lid close Rear Lid Contact Switch
00000000 Window Regulator Operation
21:59:18 Group 003: Window Positions
3.0 Window Position Driver's Door
0.0 Window Position Passenger Door
0.0 Window Position Rear Left Door
0.0 Window Position Rear Right Door
I reset the faults but problem still not resolved.
Any suggestions?
Thanks
Deep
Krumz! You are the man!
I reopened the motor and inserted a screwdriver like you said and twisted it so the brush suddenly popped out. Now both brushes are correctly touching the commutator and no longer sticking when pulled back.
I reassembled everything and hey presto, it worked!! After many months of no roof operation (the previous owners didn't want to go down the road of fixing it!) it worked just like that with no hesitation. Needs a good clean though.
Thanks very much mate, i'm so grateful for the thread and your advice.
All the best!
Deep