After a power failure during the opening or closing process, the glass sunroof can only be operated to a limited extent.
Initializing the system The system can be initialized when the vehicle is stationary and the engine is running.
During the initialization, the glass sunroof closes without jam protection.
Keep the closing path clear
Monitor closing and make sure that the closing path of the glass sunroof is clear; otherwise, injuries may result.
Press the reel up and hold it
until
the initialization is complete:
BMW X3 Service & Repair Manual > Brake booster: Replacing vacuum hose for brake booster (N63)
IMPORTANT:
Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure
in the brake servo. This makes it easier to remove the vacuum hose.
Vacuum hose and non-return valve are welded together and are replaced together as a single
unit.
Necessary pre ...