See also:

Deleting all stored programs
Press both outer memory buttons 1 for approx. 20 seconds until the LED flashes rapidly. All stored programs are deleted. The programs cannot be deleted individually. ...

Winter tires
The manufacturer of your vehicle recommends winter tires for winter roads or at temperatures below +45 ℉/+7 ℃. Although so-called all-season M+S tires do provide better winter tract ...

Tone
Only treble and bass can be set in the rear. The settings are made separately for the left and right headphones. Operation is the same as for the front tone. ...