253 Controls in detail
Useful features
Information button¡
Located below the center armrest cover is 
the Information button¡.
Press and hold button (for longer than 
two seconds).
A call to the Customer Assistance 
Center will be initiated. The button will 
flash while the call is in progress. The 
message 
Connecting call
 will appear 
in the multifunction display and the 
audio system is muted.When the connection is established, the 
message 
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 Customer 
Assistance Center representative and the 
occupants of the vehicle will be 
established. Information regarding the 
operation of your vehicle, the nearest 
Mercedes-Benz Center or Mercedes-Benz 
USA  products and services is available to 
you.
For more details concerning the Tele Aid 
system, please visit www.mbusa.com and 
use your ID and password (sent to you 
separately) to learn more (USA only). Roadside Assistance calls can be 
terminated using the tbutton on 
the multifunction steering wheel or the 
respective button for ending a 
telephone call on the audio system or 
COMAND* head unit.
iThe indicator lamp on the Information 
button¡ remains illuminated in red 
for approximately ten seconds during 
the system self-check after switching 
on ignition (together with the SOS 
button and the Roadside Assistance 
button•).
See system self-check (
page 249) 
when the indicator lamp does not come 
on in red or stays on longer than 
approximately ten seconds.
If the indicator lamp on the Information 
button¡ is flashing continuously 
and there was no voice connection to 
the Response Center established, then 
the Tele Aid system could not initiate 
an Information call (e.g. the relevant 
cellular phone network is not 
available). The message Call failed.
 
appears in the multifunction display. 
254 Controls in detailUseful features
Upgrade scenario
An emergency call is possible even if other 
services are active. Information calls can be terminated 
using thet button on the 
multifunction steering wheel or the re-
spective button for ending a telephone 
call on the audio system or COMAND* 
head unit.
!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 your 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.
!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.
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 
COMAND* head unit.