Mercedes-Benz GL450 Operator's Manual page 329

Controls in detail
Useful features
To activate, press the SOS button, the
Roadside Assistance button • or
the Information button ¡, depend-
ing on the type of response required.
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The SOS button is located in the overhead
control panel ( page 34).
The Roadside Assistance button •
( page 331) and the Information button ¡
( page 332) are located below the center arm-
rest cover.
!
The Tele Aid system utilizes the cellular
network for communication and the GPS (Global
Positioning System) satellites for vehicle loca-
tion. If either of these signals are unavailable, the
Tele Aid system may not function and if this
occurs, assistance must be summoned by other
means.
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When a Tele Aid call has been initiated, the
COMAND system audio is muted and the select-
ed mode (radio, CD etc.) pauses. The optional
cellular phone (if installed) inserted in cradle
switches off. If you must use this phone, we rec-
ommend that you use it only with the vehicle at a
standstill in a safe location. Remove the phone
from the cradle and place the call. The naviga-
tion* system (if engaged) will continue to run.
The display in the instrument cluster is available
for use, and spoken commands are only avail-
able by pressing the RPT button on the COMAND
system. A pop-up window will appear in the
COMAND system display to indicate that a Tele
Aid call is in progress. After the TeleAid call has
ended, the optional cellular phone inserted in the
cradle switches on again. A PIN entry might be
necessary.
System self-check
Initially, after switching on the ignition,
malfunctions are detected and indicated
(the indicator lamps in the SOS button, the
Roadside Assistance button • and the
Information button ¡ stay on longer
than 10 seconds or do not come on).
The message Tele Aid – inoperative
appears in the multifunction display.