9IntroductionDepending on the unit and country, the unit is switched off when the engineis turned off or the key is removed. If the unit comes on again without theignition being switched on, it will switch off automatically after 30 minutes(switch-off delay).
Energy management
If, when the ignition is switched off and the unit switched on, the batteryvoltage falls below the minimum onboard power supply voltage, an audiblewarning sounds and LOW BATTERY appears. You should switch the unit off.
If the battery voltage level continues to fall, LOW BATTERY and RADIO OFF arebriefly shown on the display. The unit will switch off automatically.
Adjusting the base volume
effectActionIncrease the vol-ume.On the radio: Turn the volume control ⇒ Fig. 1 1
clockwise.On the multifunction steering wheel: Turn the volumecontrol up or press the corresponding button (depend-ing on equipment fitted) ⇒ Booklet Instruction Manual,chapter Overview of vehicle
Decreasing thevolumeOn the radio: Turn the volume control ⇒ Fig. 1 1 an-ticlockwise.On the multifunction steering wheel: Turn the volumecontrol down or press the corresponding button (de-pending on equipment fitted) ⇒ Booklet InstructionManual, chapter Overview of vehicle
Changes to the volume are indicated by a bar on the screen.
At “0” the unit is muted (display: ) and any media source currently beingplayed will be stopped.
It is possible to preset certain volume settings and adjustments⇒ page 38.
Note
If the basic playback volume of an audio source has been increased sub-stantially, lower the volume before changing to another audio source.
