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- Fig. 178 MMI ON/OFF button with joystick function
Switching MMI on/off: The MMI can be switched on/off manually.
- To switch on manually: Briefly press the ON/OFF button -1- Fig. 178►. Or: Press the MENU button -6- Fig. ►/Fig. ► or one of the buttons for calling up menus directly -5-.
- To switch off manually: Press and hold the ON/OFF button -1- Fig. 178► until the MMI switches off. The MMI system will not be switched on automatically when the ignition is switched on if it was turned off manually the last time it was operated.
Other functions:
- To adjust the volume: Turn the ON/OFF button -1- Fig. 178►.
- Mute: Briefly press the ON/OFF button -1- Fig. 178►.
- To select the previous/next function (e.g. radio station/track): Briefly press the ON/OFF button -1- Fig. 178► to the left
or right 
. - To rewind/fast forward (e.g. track): Press and hold the ON/OFF button -1- Fig. 178► to the left or right .
WARNING
The audio system volume should be set at a level which enables you to hear external signals (such as the sirens of police and emergency vehicles) clearly – failure to do so could result in an accident.
Note
If the engine is switched off and the vehicle battery charge level is low, the MMI system will be switched off automatically.