282 Controls in detailUseful featuresUpgrade signals
An emergency call is possible even if other 
services are active.
!If the indicator lamps do not start flash-
ing after pressing one of the buttons or 
remain illuminated (in red) at any time, 
the Tele Aid system has detected a 
malfunction or the service is not 
currently active, and may not initiate a 
call. Visit an Mercedes-Benz Center 
and have the system checked or 
contact the Response Center at 
1-800-756-9018 (in the USA) or 
1-888-923-8367 (in Canada) as soon 
as possible.
iThe indicator lamp in the respective 
button flashes until the call is con-
cluded. Calls can only be terminated by 
a Response Center or Customer 
Assistance Center representative 
except Roadside Assistance and 
Information calls, which can also be 
terminated by pressing buttont 
on the multifunction steering wheel or 
the respective button for ending a 
telephone call on the audio system or 
the COMAND* head unit.!If the indicator lamp continues to flash 
or the system does not reset, contact 
the Response Center at 
1-800-756-9018 (in the USA), or 
1-888-923-8367 (in Canada), or 
Mercedes-Benz Customer Assistance 
at 1-800-FOR-MERCedes 
(1-800-367-6372) in the USA, or 
Customer Service at 1-800-387-0100 
in Canada.
iWhen a Tele Aid call has been initiated, 
the audio system or the COMAND* 
system audio is muted and the 
selected mode (radio or CD) pauses. 
The optional cellular phone (if installed) 
switches off. If you must use this 
phone, the vehicle must be parked. 
Disconnect the coiled cord and place 
the call. The COMAND* navigation 
system (if engaged) will continue to 
run. The display in the instrument 
cluster is available for use, and spoken 
commands are only available by press-
ing the RPT button on the COMAND* 
headunit. A pop-up window will appear 
in the COMAND* display to indicate 
that a Tele Aid call is in progress.