Basic operating principles 
 Topic introduction 
You can find information about the following 
specific topics in this chapter: 
Rotary and push buttons, device and
function keys ......................................................
 7 
Switch on or off ................................................... 7 
Change the basic volume  ................................... 8 
Additional displays and display options 
 ................. 9 
Screen displays can vary due to setting changes, 
and
 the device can behave in part differently 
from the description in these instructions. 
Station, song change and volume settings can 
also be made via the multifunction  steering 
wheel dependent on the vehicle ⇒Manual 
Operating instructions. 
Supplementary information and warnings: 
● Safety notes ⇒Page 3 
● Overview of control elements ⇒Page 5
Due to market-specific device software, 
possibly not alllisted displays and functions 
are available. The lack of a function is not a 
device defect. 
Due to national legal requirements, a few 
fu
nctions can no longer be selected starting 
from a specific speed. 
Using a cellphone i
n the vehicle can cause 
noise in loudspeakers. 
In a few vehicles with ParkPilot, the volume 
of
 the current audio source is reduced 
automatically when the reverse gear is 
engaged. 
 
Rotary and push buttons, device and function keys 
First read and observe the safety 
notes  on page 3 and the introductory 
information on page 7. 
Rotary and push buttons 
The left rotary and push button 
⇒Fig. 1 
1 is designated a volume control or
on and off switch.
The right rotary and push button 
⇒Fig. 1 
7 is designated as setting button.
Device buttons 
The labeled buttons on the device are designated 
as "device buttons" and displayed by a button 
symbol with blue contents, e. g., device button 
MEDIA ⇒Fig. 1 2 . 
You operate device buttons by pressing or 
h
olding down. 
Function keys 
There are six keys not labeled next to the screen. 
⇒Fig. 1 
3 . These keys are called "function
keys", because their function changes t
he
c
urrent operating state correspondingly.
Which function is assigned to a function key
is displayed on the screen directly next t
o
t
he respective key. 
 
On/off switching 
First read and observe the safety 
noteson page 3 and the introductory 
information on page 7. 
To switch the device on or off manually, 
 ⇒Fi
g. 1 
1 press the rotary or push 
button for short time. 
 
Introduction  7