272 Controls in detailUseful featuresThe Tele Aid system is operational provid-
ing that the vehicle’s battery is charged, 
properly connected, not damaged and cel-
lular and GPS coverage is available.
The speaker volume of a Tele Aid call can 
be adjusted when using the volume control 
on the multifunction steering wheel. To 
raise, press buttonæ and to lower, 
press buttonç or use the volume knob 
on your COMAND headunit.
To activate, press the SOS button, the 
Roadside Assistance button• or 
the Information button¡, depend-
ing on the type of response required.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.
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 ten seconds or do not come on). The message 
TELE AID malfunction – Drive 
to workshop
 appears in the multifunction 
display.
iThe SOS button is located above the in-
terior rear view mirror.
The Roadside Assistance button• 
and the Information button¡ are 
located below the center armrest cov-
er.
iThe Tele Aid system utilizes the cellular 
network for communication and the 
GPS (G
lobal P
ositioning S
ystem) satel-
lites for vehicle location. If either of 
these signals are unavailable, the 
Tele Aid system may not function and if 
this occurs, assistance must be sum-
moned by other means.
Warning!
G
If the indicator lamps in the SOS button, in 
the Roadside Assistance button and/or in 
the Information button remain illuminated 
constantly in red and/or the message TELE AID malfunction – Drive to 
workshop
 is displayed in the multifunction 
display after the system self-check, a mal-
function in the system has been detected.
If a malfunction is indicated as outlined 
above, the system may not operate as ex-
pected. Have the system checked at the 
nearest Mercedes-Benz Center as soon as 
possible.