Mercedes-Benz SLR McLaren. Operator's Manual.

Controls in detail
Audio system
Button and soft key operation
In these instructions, the alpha-numeric
keypad (right side of radio panel) and the
function buttons (left side of radio panel)
are referred to as “buttons”. The four keys
below the display panel are referred to as
“soft keys”.
146
!
Do not press directly on the display
face. Otherwise the display will be
damaged.
Operation
Switching on/off
Switching on:
Turn SmartKey in starter switch to
position 1 or 2.
or
Press control knob a.
i
If the radio is switched on without the
SmartKey in the starter switch, it will
automatically switch off again after approximately
30 minutes.
Switching off:
Remove SmartKey from starter switch.
or
Press control knob a.
Adjusting the volume
Turn control knob a.
The volume will increase or decrease
depending on the direction turned.
i
The volume setting can be selected
separately for the telephone and audio
system.
Adjusting audio functions
Press the AUD key to call up the bass, treble,
balance and fader functions in the various
operating modes. Settings for bass
and treble are stored separately for the AM
and FM frequency bands, cassette mode
and CD mode.