165 Glossary
Audio source
This includes the systems radio and CD 
(CD drive in the control unit, CD chan-
ger*).
Balance
Defines sound-center left/right.
COMAND
(Co
ckpit Man
agement and D
ata Sys-
tem)
Information and operating center for 
vehicle sound and communications 
systems, including the radio and 
CD player, as well as for other optional 
equipment (CD changer*, telephone*, 
etc.).
DVD
(D
igital V
ersatile D
isc)
Digital storage medium for storing lar-
ge amounts of data.Emergency call
This function places a call to a local 
911 provider. It does not initiate a
 ->Tele Aid* call. Please note that the 
911 emergency call system is a public 
service. Using it without due cause is a 
criminal offense.
Fader
Defines sound-center front/back.
GPS
(G
lobal P
ositioning S
ystem) 
Satellite-based system for relaying 
geographic location information to and 
from vehicles equipped with special re-
ceivers. Employs DVD digital maps for 
navigation.
Heading Up
Dynamic map alignment, map is dis-
played facing driving direction pointing 
up.LOGIC7 Surround
Playback method resulting in an impro-
ved spatial listening experience com-
pared to conventional stereo playback.
Navigation DVD
Contains all available destination 
addresses (town, road, intersection, 
house number, special destinations) 
and the digital map material for a coun-
try or a region for destination entry, 
route calculation and destination 
guidance at time of DVD production. 
DVD maps do not cover all areas nor all 
routes within an area. 
North Up
The map is displayed facing north du-
ring route guidance.