Page 156 of 317

153 Tele Aid
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index When the connection is established, the message 
“ROADSIDE ASSISTANCE – CALL CONNECTED” 
appears in the MCS 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).
While the call is connected, you can change to 
navigation menu by pressing NAVI button on the MCS.
A voice connection between the Roadside Assistance 
dispatcher and the occupants of the vehicle will be 
established. When a voice connection is established the 
audio system mutes and the message “TELE AID –
ROADSIDE ASSISTANCE CALL ACTIVE” appears in the 
MCS display. The nature of the need for assistance can 
then be described. The Mercedes-Benz Roadside 
assistance dispatcher will either dispatch a qualified 
Mercedes-Benz technician or arrange to tow your 
vehicle to the nearest 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 f lat 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 actual vehicle 
data.
Notes:
The indicator lamp in the Roadside Assistance 
button• remains illuminated in red for 
approximately 10 seconds during the system self-check 
after turning key in steering lock to position 2 (together 
with the “SOS” button and the Information 
button¡).
See system self-check on page 148 when the indicator 
lamp does not light up in red or stay on longer than 
approximately 10 seconds. 
     
        
        Page 158 of 317

155 Tele Aid
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index The Tele Aid system will transmit data generating the 
vehicle identification number, model, color and location 
(subject to availability of cellular and GPS signals).
While the call is connected, you can change to 
navigation menu by pressing NAVI button on the MCS.
A voice connection between the Client Assistance 
Center representative and the occupants of the vehicle 
will be established. When a voice connection is 
established, the audio system mutes and the message 
“TELE AID – INFO CALL ACTIVE” appears in the MCS 
display. Information regarding the operation of your 
vehicle, the nearest Mercedes-Benz Light Truck Center 
or Mercedes-Benz USA products and services is 
available to you.
For more details concerning Tele Aid, please visit 
www.mbusa.com and use your ID and password, sent to 
you separately, to learn more (USA only).Notes:
The indicator lamp in the Information button¡ 
remains illuminated in red for approximately 
10 seconds during the system self-check after turning 
key in steering lock to position 2 (together with the 
“SOS” button and the Roadside Assistance button•).
See system self-check on page 148 when the indicator 
lamps do not light up in red or stay on longer than 
approximately 10 seconds.
If the indicator lamp in the Information button¡ is 
illuminated continuously and there was no voice 
connection to the Response Center established, then the 
Tele Aid system could not initiate an Roadside 
Assistance call (e.g. the relevant cellular phone network 
is not available). The message “Info – CALL FAILED” 
appears in the MCS display.
Should this occur, information must be summoned by 
other means.
Information calls can be terminated using the END 
button on the MCS unit. 
     
        
        Page 160 of 317

157 Tele Aid
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Important!
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 Client Assistance at 
1-800-FOR-MERCedes (1-800-367-6372) in the USA or 
Customer Service at 1-800-387-0100 in Canada.
Notes:
The indicator lamp for the respective button flashes 
until the call is concluded and this can only be 
completed by a Response Center or Client Assistance 
Center representative, except Roadside assistance and 
Information calls, which can also be terminated by 
using the End button on the MCS unit.
When a Tele Aid call has been initiated, the MCS system 
audio is muted and the selected mode (radio, tape 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 navigation system (if engaged) will 
continue to run. A pop-up window will appear in the 
MCS display to indicate that a Tele Aid call is in 
progress.Remote door unlock
In the case you have your vehicle locked unintentionally 
(e.g. key inside vehicle), and the reserve key is not 
handy, contact the Mercedes-Benz Response Center at 
1-800-756-9018 (in the USA) or 1-888-923-8367 (in 
Canada). You will be asked to provide your password 
which you provided when you completed the subscriber 
agreement.
Then return to your vehicle and pull outside handle of 
liftgate for a minimum of 20 seconds until the “SOS” 
button is flashing.
As an alternative, you may unlock the vehicle via 
Internet using the ID and password sent to you shortly 
after the completion of your Acquaintance Call.
The Response Center will then unlock your vehicle with 
the remote door unlocking feature.
Note:
The remote door unlock feature is available if the 
relevant cellular phone network is available.
The SOS button will f lash and the message 
“EMERGENCY CALL –  CALL CONNECTED” will appear 
in t he MCS display to indica te receipt of t he d oor unlock 
command.