226 Controls in detailUseful featuresRoadside Assistance button•
Located below the center armrest cover is 
the Roadside Assistance button•.
Press and hold button (for longer than 
two seconds).
A call to a Mercedes-Benz Roadside 
Assistance dispatcher will be initiated. 
The button will flash while the call is in 
progress. The message 
TELE 
DIAGNOSIS – CONNECTING CALL
 will 
appear in the multifunction display.
When the connection is established, the 
message 
TELE DIAGNOSIS – 
CALL CONNECTED
 appears in the 
multifunction display. The Tele Aid system 
will transmit data generating the vehicle 
identification number, model, color and 
location (subject to availability of cellular 
and GPS signals).
A voice connection between the Roadside 
Assistance dispatcher and the occupants 
of the vehicle will be established. When a 
voice connection is established, the audiosystem mutes and the message 
TELE AID 
– ROADSIDE ASSISTANCE CALL ACTIVE
 
appears in the multifunction display.
Describe the nature of the need for 
assistance.
The Mercedes-Benz Roadside Assistance 
dispatcher will either dispatch a qualified 
Mercedes-Benz technician or arrange to 
tow your vehicle to the nearest authorized 
Mercedes-Benz Center. For services such 
as labor and/or towing, charges may 
apply. Refer to the Roadside Assistance 
manual for more information.
These programs are only available in the 
USA:
Sign and Drive services: Services such 
as jump start, a few gallons of fuel or 
the replacement of a flat tire with the 
vehicle spare tire are obtainable.
Remote Vehicle Diagnostics: This 
function permits the Mercedes-Benz 
Roadside Assistance dispatcher to 
download malfunction codes and actu-
al vehicle data.
iThe indicator lamp on the Roadside 
Assistance button• remains illumi-
nated in red for approximately ten sec-
onds during the system self-check after 
turning the SmartKey in the starter 
switch to position2 (together with the 
SOS button and the Information 
button¡).
See system self-check (
page 223) 
when the indicator lamp does not come 
on in red or stays on longer than 
approximately ten seconds.
If the indicator lamp on the Roadside 
Assistance button• is illuminated 
continuously and there was no voice 
connection to the Response Center 
established, then the Tele Aid system 
could not initiate a Roadside Assis-
tance call (e.g. the relevant cellular 
phone network is not available). The 
message 
TELE DIAGNOSIS – 
CALL FAILED
 appears in the 
multifunction display.