Top and windows




Operation does not only depends on operation of the power roof operation, that cyclically fallows a number of limit switches, but that the the roof controller also uses CanBus digital messages and voltage encoding.
Therefore your start, no start battery, must be greater than 11 volts for your vehicle not to throw a soft or hard diagnostic trouble code (DTC)
Note: Most N52 power roof controllers are soft, reboots and clears upon key off and/or or disconnection of vehicle battery
If you really seek assistance, you should have included the diagnostic trouble codes.
Hint:
Your relevant trouble codes are only available via the diagnostic connector in the engine bay diagnostic connector, which also has the ability to read the MB protocol for the W208/A208.


