2003 MERCEDES-BENZ G55AMG display

142 Controls in detailTransfer case
Press upper half1 (“LOW”) of the
transfer case switch.
Once the shift is complete, gear
positionL is displayed in the transfer
case indicator.

Put gear selector in D.
Switching from LOW to HIGH

Press lower half2 (“HIGH”) of the
transfer case switch.
Once the shift is complete, gear
positionH is displayed in the transfer
case indicator.

Put gear selector in D.
Messages in the multifunction display
If a shift was not completed and the multi-
function display shows one of the following
messages:


TC SHIFT CONDITIONS NOT FULFILLEDThe shift does not occur. At least one
shift condition was not met.

Repeat the shift procedure.


TC IN NEUTRAL The shift does not occur. The transfer
case is in neutral. The gear positionN
is displayed in the transfer case
indicator1.

Repeat the shift procedure.


TC SHIFT – CANCELLEDThe shift did not take place.

Repeat the shift procedure.


TRANSFER CASE – VISIT WORKSHOP!There is a malfunction in the system.

Have the vehicle checked at your au-
thorized Mercedes-Benz Light Truck
Center as soon as possible.
More information can be found in the
“Practical hints” section (
page 266).
!The shift procedure can only be per-
formed when:

The engine is running.


The selector lever for the automatic
transmission is in positionN.


The vehicle speed does not exceed
40 mph (70 km/h).
Warning!
G
If TC is in neutral, transmission positionP
will not hold vehicle. The parking brake must
be applied to hold vehicle in place.
iIf the SmartKey is in starter switch
position0 or1, an alarm will sound if
the transfer case is in positionN and
the driver’s door is opened.
Engage transfer case to gear position
HIGH or LOW.

145 Controls in detail
Differential locks
Switching differential locks on and off
The switch is located in the center console.
1Transfer case (center) differential lock
2Rear axle differential lock
3Front differential lock
4Engagement indicator lamps (yellow)
5Function indicator lamps (red)Switching differential locks on
Transfer case differential lock

Press switch1.
The yellow engagement indicator lamp
for the transfer case differential lock
lights up.
The
v
warning lamp lights up.
When the differential lock engagement
operation has been completed, the red
function indicator lamp lights up.The message
ABS NOT AVAILABLE –
DIFFERENTIAL LOCKED
appears in the
multifunction display.
The
v
and
-
warning lamps in
the instrument cluster come on.
Once the transfer case differential lock
is switched on, you can now, if needed,


switch on rear axle differential
lock2
or


switch on rear axle differential lock
and front differential lock 2 and 3.
iThe differential locks can only be
switched on in the sequence 1, 2, 3.
!To avoid damage to the transfer case
and differential locks:

Engage differential locks only at low
speed (walking speed, not more
than 5 mph)


Do not engage differential locks if
the driving wheels are spinning


Do not engage on paved roads.

146 Controls in detailDifferential locksRear axle differential lock
Press switch2.
The yellow engagement indicator lamp
lights up first, followed by the red func-
tion indicator lamp.
The rear axle differential lock is
switched on.
Front differential lock

Press switch 3.
The yellow engagement indicator lamp
lights up first, followed by the red func-
tion indicator lamp.
The front differential lock is switched
on. Switching differential locks off
There are two different methods to disen-
gage differential locks:


You can switch the differential locks off
in reverse order (3, 2, 1).


To switch off all differential locks at the
same time:
Press switch1.
The yellow engagement indicator
lamps go out first. The red function
indicator lamps go out when the
switching process has been carried
out in the differential.To activate the ESP, BAS and ABS systems,
drive again for three seconds using a con-
stant driving style.
All messages in the multifunction display
disappear. The
v
and
-
warning
lamps in the instrument cluster go out.
iIf the function lamps do not go out
when the differential locks are disen-
gaged, bring vehicle to a stop and then
continue driving. Changing the vehicle
load can help to disengage locks. Warning!
G
Always remember to disengage the differen-
tial locks when returning to drive on paved
roads, see “A few words about differentials
and differential locks” (
page 144).

184 Controls in detailUseful featuresShortly after the completion of your ac-
quaintance call, you will receive a user ID
and password via first call mail. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock, profile
and more.System self-check
Initially, after turning the key in starter
switch to position2, malfunctions are de-
tected and indicated (the indicator lamps
in the SOS button, the Roadside Assis-
tance button
•
and the Information
button
¡
stay on longer than
10 seconds or do not come on). The mes-
sage
TELE AID – VISIT WORKSHOP!
ap-
pears for approx. 10 seconds in the
multifunction display.
iThe SOS button is located above the in-
side rear view mirror.
The Roadside Assistance button
•

and the Information button
¡
are
located below the center armrest cov-
er.
!The Tele Aid system utilizes the cellular
network for communication and the
GPS (Global Positioning System) 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 do not come on dur-
ing the system self-check or if any of these
indicators remain illuminated constantly in
red and/or the message
TELE AID - VIS-
IT WORKSHOP
is displayed in the multifunc-
tion display after the system self-check, a
malfunction in the system has been detect-
ed.
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 Light Truck Center
as soon as possible.

185 Controls in detail
Useful features
Emergency calls
An emergency call is initiated automatical-
ly:

following an accident in which the
emergency tensioning devices (ETDs)
or airbags deploy


if the anti-theft alarm or the tow-away
alarm stays on for more than
20 seconds. See anti-theft alarm sys-
tem (
page 79) and tow-away alarm
(
page 80)
An emergency call can also be initiated
manually by opening the cover next to the
inside rear view mirror labeled SOS, then
briefly pressing the button located under
the cover. See below for instructions on
initiating an emergency call manually.
Once the emergency call is in progress, the
indicator lamp in the SOS button will begin
to flash. The message
EMERGENCY CALL –
CONNECTING CALL
appears in the multifunc-
tion display. When the connection is estab-
lished, the message
EMERGENCY CALL –
CALL CONNECTED
appears in the multifunction display. All information rele-
vant to the emergency, such as the loca-
tion of the vehicle (determined by the GPS
satellite location system), vehicle model,
identification number and color are gener-
ated.
A voice connection between the Response
Center and the occupants of the vehicle
will be established automatically soon af-
ter the emergency call has been initiated.
When a voice connection is established the
audio system mutes and the message
TELE AID – EMERGENCY CALL ACTIVE
ap-
pears in the multifunction display. The Re-
sponse Center will attempt to determine
more precisely the nature of the accident
provided they can speak to an occupant of
the vehicle.The Tele Aid system is available if:


it has been activated and is operation-
al. Activation requires a subscription
for monitoring services, connection
and cellular air time


the relevant cellular phone network
and GPS signals are available and pass
the information on to the response cen-
teriLocation of the vehicle on a map is only
possible if the vehicle is able to receive
signals from the GPS satellite network
and pass the information on to the re-
sponse center.

186 Controls in detailUseful features
Initiating an emergency call manually
1Cover
2SOS button
Briefly press on cover1.
The cover will open.

Press SOS button2 briefly.
The indicator lamp in SOS button2 will
flash until the emergency call is con-
cluded.

Wait for a voice connection to the Re-
sponse Center.

Close the cover1 after the emergency
call is concluded.
Warning!
G
If the indicator lamp in the SOS button is il-
luminated continuously and there was no
voice connection to the Response Center
established, then the Tele Aid system could
not initiate an emergency call (e.g. the rele-
vant cellular phone network is not available).
The message
EMERGENCY CALL –
CALL FAILED appears in the multifunction
display for approx. 10 seconds.
Should this occur, assistance must be sum-
moned by other means.
Warning!
G
If you feel at any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle, ve-
hicle in a dangerous road location), please
do not wait for voice contact after you have
pressed the emergency button. Carefully
leave the vehicle and move to a safe loca-
tion. The Response Center will automatically
contact local emergency officials with the
vehicle’s approximate location if they re-
ceive an automatic SOS signal and cannot
make voice contact with the vehicle occu-
pants.

187 Controls in detail
Useful features
Roadside Assistance button
•
Located below the center armrest cover is
the Roadside Assistance button
•
.

Press and hold the button (for longer
than 2 seconds).
A call to a Mercedes-Benz Roadside As-
sistance dispatcher will be initiated.
The button will flash while the call is in
progress. The message
ROADSIDE AS-
SISTANCE – CONNECTING CALL
will ap-
pear in the multifunction display.
When the connection is established, the
message
ROADSIDE ASSISTANCE –
CALL CONNECTED
appears in the multifunc-
tion display. The Tele Aid system will trans-
mit data generating the vehicle
identification number, model, color and lo-
cation (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 audio system mutes and the message
TELE AID
– ROADSIDE ASSISTANCE CALL ACTIVE
ap-
pears in the multifunction display.

Describe the nature of the need for as-
sistance.
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 Light Truck 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 func-
tion permits the Mercedes-Benz Road-
side Assistance dispatcher to
download malfunction codes and actu-
al vehicle data.
iThe indicator lamp in the Roadside As-
sistance button
•
remains illumi-
nated in red for approx. 10 seconds
during the system self-check after turn-
ing the key in the starter switch to
position2 (together with the SOS but-
ton and the Information button
¡
).
See system self-check (
page 184)
when the indicator lamp does not light
up in red or stays on longer than ap-
proximately 10 seconds.
If the indicator lamp in the Roadside
Assistance button
•
is illuminated
continuously and there was no voice
connection to the Response Center es-
tablished, then the Tele Aid system
could not initiate a Roadside Assis-
tance call (e.g. the relevant cellular
phone network was not available). The
message
ROADSIDE ASSISTANCE –
CALL FAILED
appears in the multifunc-
tion display.

188 Controls in detailUseful featuresInformation button
¡
Located below the center armrest cover is
the Information button
¡
.

Press and hold the button (for longer
than 2 seconds).
A call to the Customer Assistance Cen-
ter will be initiated. The button will
flash while the call is in progress. The
message
INFO – CONNECTING CALL
will
appear in the multifunction display.
When the connection is established, the
message
INFO – 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 cel-
lular and GPS signals).A voice connection between the Customer
Assistance Center representative and the
occupants of the vehicle will be estab-
lished. When a voice connection is estab-
lished the audio system mutes and the
message
TELE AID – INFO CALL ACTIVE

appears in the multifunction display. Infor-
mation regarding the operation of your ve-
hicle, the nearest Mercedes-Benz Light
Truck Center or Mercedes-Benz USA prod-
ucts 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 sep-
arately) to learn more (USA only). Roadside Assistance calls can be ter-
minated using the
ì
button on the
multifunction steering wheel.
iThe indicator lamp in the Information
button
¡
remains illuminated in red
for approx. 10 seconds during the sys-
tem self-check after turning key in the
starter switch to position2 (together
with the SOS button and the Roadside
Assistance button
•
).
See system self-check (
page 184)
when the indicator lamp does not light
up in red or stays on longer than ap-
proximately 10 seconds.
If the indicator lamp in the Information
button
¡
is illuminated continuous-
ly 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 avail-
able). The message
INFO –
CALL FAILED
appears in the multifunc-
tion display.
Information calls can be terminated us-
ing the
ì
button on the multifunc-
tion steering wheel.