Page 162 of 569
161 Controls in detail
Control system
Menus, submenus and functions
Menu1Menu2Menu3Menu4Menu5
Standard displayAUDIONAV*AIRMATIC*/CompassDISTRONIC*
(page 164)(page 165)(page 167)(page 168)(page 262)
Commands/submenus
Trip- and main odometerSelecting radio stationRoute guidance 
instructions, current 
direction traveledAIRMATIC*Status and settings
Checking tire inflation 
pressureSelecting satellite radio 
station*Compass
Checking coolant 
temperatureOperating CD player
Calling up digital 
speedometer or outside 
temperature
Calling up maintenance 
service indicator
iThe headings used in the menus table are 
designed to facilitate navigation within thesystem and are not necessarily identical to those 
shown in the control system displays. The first function displayed in each menu will automati-
cally show you which part of the system you are 
in. 
     
        
        Page 323 of 569

322 Controls in detail
Useful features
Tele Aid*
Shortly after the completion of your Tele 
Aid acquaintance call, you will receive a 
user ID and password. By visiting 
www.mbusa.com and selecting “Tele Aid” 
(USA only), you will have access to account 
information, remote door unlock and 
more.The Tele Aid system
(Tele
matic Alarm Identification on 
D
emand)
The Tele Aid system consists of three 
types of response:
automatic and manual emergency
roadside assistance
information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged, 
properly connected, not damaged and cel-
lular and GPS coverage are available.
The speaker volume of a Tele Aid call can 
be adjusted by using the volume control on 
the COMAND system headunit or on the 
multifunction steering wheel. To raise, turn 
the rotary volume control on the COMAND 
system headunit clockwise or press 
buttonæ on the multifunction steering 
wheel. To lower, turn the rotary volume 
control on the COMAND system headunit 
counterclockwise or press buttonç on 
the multifunction steering wheel.
To activate, press the SOS button, the 
Roadside Assistance button• or 
the Information button¡, depend-
ing on the type of response required.
!The initial activation of the Tele Aid system 
may only be performed by completing the sub-
scriber agreement and placing an acquaintance 
call using the ¡button. Failure to complete 
either of these steps will result in a system that 
is not activated.
If you have any questions regarding activation, 
please call the Response Center at 
1-800-756-9018 (in the USA) or 
1-888-923-8367 (in Canada).
iThe SOS button is located in the overhead 
control panel (
page 324).
The Roadside Assistance button• 
(
page 325) and the Information 
button¡(
page 326) are located below 
the center armrest cover.
!The Tele Aid system utilizes the cellular 
network for communication and the GPS (G
lobal 
P
ositioning System) satellites for vehicle 
location. If either of these signals are unavail-
able, the Tele Aid system may not function and if 
this occurs, assistance must be summoned by 
other means. 
     
        
        Page 324 of 569

323 Controls in detail
Useful features
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.Emergency calls
An emergency call is initiated auto-
matically following an accident in which 
the emergency tensioning devices (ETDs) 
or air bags deploy.
An emergency call can also be initiated 
manually by opening the cover next to the 
interior rear view mirror labeled SOS, then 
briefly pressing the button located under 
the cover. See (
page 324) for 
instructions on initiating an emergency call 
manually.
Once the emergency call is in progress, the 
indicator lamp on the SOS button will 
begin to flash. The message 
Connecting Call appears in the multifunc-
tion display. When the connection is estab-
lished, the message 
Call Connected 
appears in the multifunction display. 
All information relevant to the emergency, 
such as the location of the vehicle (deter-
mined by the GPS satellite location sys-
tem), vehicle model, identification number 
and color are generated.
iWhen a Tele Aid call has been initiated, 
the COMAND system audio is muted and the 
selected mode (radio, CD etc.) pauses. 
The optional cellular phone (if installed) inserted 
in cradle switches off. If you must use this 
phone, we recommend 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 navigation* system (if engaged) will 
continue to run. The display in the instrument 
cluster is available for use, and spoken com-
mands are only available by pressing the 
RPT button on the COMAND system. A pop-up 
window will appear in the COMAND system dis-
play to indicate that a Tele Aid call is in progress. 
After the Tele Aid call has ended, the optional 
cellular phone inserted in the cradle switches on 
again. A PIN entry might be necessary.
Warning!G
If the indicator lamps on the SOS button, on 
the Roadside Assistance button, and/or on 
the Information button remain illuminated 
continuously in red and/or the message 
Tele Aid Inoperative is displayed in the 
multifunction display after the system 
self-check, a malfunction in the system has 
been detected.
If a malfunction is indicated as outlined 
above, the system may not operate as 
expected. Have the system checked at the 
nearest Mercedes-Benz Light Truck Center 
as soon as possible.