See also:

Software Update
The vehicle supports various external devices depending on the current software version. With a software update, the vehicle can support new cell phones or new external device, for example. ...

Coolant temperature
Should the coolant, and with it the engine, become too hot, a Check Control message is displayed. Check the coolant level ...

Deleting all stored programs
Press the left and right memory buttons for approx. 20 seconds until the LED flashes rapidly. All stored programs are deleted. The programs cannot be deleted individually. ...