See also:

Close the windows and glass sunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...

Malfunction
A message is displayed in the instrument cluster. HDC is not available, e.g., due to elevated brake temperatures. ...

Features
The 535i xDrive starts at $55,800 and comes with a fair amount of standard features, like a panoramic moonroof, xenon headlights and rain-sensing windshield wipers. As with most BMWs, though, it's ...