See also:

Messages after trip completion
Malfunctions indicated during a trip are displayed again after the ignition is switched off. ...

After the ignition is switched off
The roof can still be operated for approx. 1 minute, as long as no door has been opened. ...

Drive away without delay
Do not wait for the engine to warm up while the vehicle remains stationary. Start driving right away, but at moderate engine speeds. This is the fastest way for the cold engine to reach its ope ...