Differential MERCEDES-BENZ G500 2008 W463 Owner's Manual

Contents
Settings menu .............................. 146
Trip computer menu..................... 157
TEL menu ..................................... 159
Automatic transmission ..................... 162 Gear selector lever ....................... 162
Shifting procedure ....................... 163
Gear selector lever positions ....... 164
Driving tips ................................... 166
Gear ranges ................................. 167
One-touch gearshifting................. 168
Emergency operation
(Limp-Home Mode) ...................... 169
Transfer case ..................................... 170 Transfer case position .................. 170
Switching transfer case................ 170
Differential locks ............................... 173 A few words about differentials
and differential locks.................... 174
Switching differential locks on
and off.......................................... 175
Good visibility .................................... 177 Headlamp cleaning system .......... 177
Rear view mirrors ......................... 177
Sun visors .................................... 179
Windshield defroster .................... 180
Rear window defroster ................. 181 Climate control ................................... 182
Deactivating the climate control
system ............... ........................... 185
Operating the climate control
system in automatic mode............ 185
Setting the temperature................ 185
Adjusting air distribution............... 186
Adjusting air volume ..................... 186
Front defroster.............................. 187
Air recirculation mode .................. 188
Air conditioning............................. 189
Residual heat and ventilation ........ 190
Rear passenger compartment
adjustable air vents....................... 191
Power windows .................................. 192 Opening and closing ..................... 192
Summer opening feature .............. 193
Convenience closing feature......... 194
Power tilt/sliding sunroof................... 195 Opening and closing ..................... 195
Driving systems ............. ..................... 197
Cruise control ............................... 197
Rear Parking Assist ....................... 200
Rear view camera ......................... 203 Loading .............................................. 206
Roof rack ...................................... 206
Expanding cargo compartment ..... 206
Split rear seat bench .................... 206
Loading instructions ..................... 208
Cargo tie-down rings..................... 209
Partition net* (MB Accessory) ...... 210
Cargo compartment cover blind ... 214
Useful features ................................... 215 Storage compartments ................. 215
Ashtrays........................................ 220
Cigarette lighter............................ 222
Electrical outlet............................. 223
Floormats ..................................... 224
Heated steering wheel .................. 225
Telephone* ................................... 226
Tele Aid......................................... 229
Garage door opener ...................... 236
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30 At a glance
Center console
Upper partItemPage
1Seat heating, driver’s side112
2Windshield defroster switch180
3Rear window wiper/washer
switch60
4Electronic Stability Program
(ESP®) switch
93
5Differential lock switches175
6Central unlocking switch107
Central locking switch107
7Alarm system indicator lamp96
Tow-away alarm off switch97
8Seat heating, front passenger
side112
ItemPage
9Hazard warning flasher switch124
aFront passenger front air bag
off indicator lamp80,
335
bCOMAND system, see
separate operating
instructions
cClimate control182
dAshtray220
Cigarette lighter222
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87
Safety and Security
Driving safety systems
 Driving safety systems
In this section you will find information on
the following driving safety systems:

ABS (Antilock Brake System)

BAS (Brake Assist System)

4-ETS (Electronic Traction System)

EBB (Electronic Brake Booster)

ESP® (Electronic Stability Program)
ABS
The Antilock Brake System (ABS) regulates
the brake pressure so that the wheels do
not lock during braking. This allows you to
maintain the ability to steer your vehicle.
The ABS is functional above a speed of
approximately 5 mph (8 km/h) indepen-
dent of road surface conditions (as long as
the differential lock s are not engaged).
Warning!G
The following factors increase the risk of
accidents:

Excessive speed, especially in turns

Wet and slippery road surfaces

Following another ve hicle too closely
The driving safety syste ms described in this
section cannot reduce these risks or pre-
vent the natural laws of physics from acting
on the vehicle.
Always adapt your driv ing style to the pre-
vailing road and weat her conditions and
keep a safe distance to other road users and
objects on the street.
iIn winter operation, the maximum effective-
ness of the ABS, the BAS, the ESP®, the EBB, and
the 4-ETS is only achieved with winter tires or
snow chains as required.
Warning!G
Do not pump the brak e pedal. Use firm,
steady brake pedal pressure instead. Pump-
ing the brake pedal de feats the purpose of
ABS and significantly reduces braking effec-
tiveness.
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92 Safety and Security
Driving safety systems
Warning!G
Never switch off the ESP® when you see the
ESP® warning lamp v flashing in the
instrument cluster. In this case proceed as
follows:

While driving off, apply as little throttle
as possible.

While driving ease up on the accelera-
tor.

Adapt your speed and driving style to
the prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP
® cannot prevent accidents result-
ing from excessive speed.
Warning!G
The ESP® cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The ESP
®
cannot prevent accidents, including those
resulting from excessiv e speed in turns, fol-
lowing another vehicle too closely, or hydro-
planing. Only a safe, attentive, and skillful
driver can prevent accidents. The capabili-
ties of a ESP
® equipped vehicle must never
be exploited in a reckless or dangerous
manner which could jeopardize the user’s
safety or the safety of others.
!Operational or performance test must only
be conducted on a two-axle dynamometer. If
such tests are necessary, contact an authorized
Mercedes-Benz Light Truck Center. You could
otherwise seriously damage the brake system or
the transfer case which is not covered by the
Mercedes-Benz Limited Warranty.
!Because the ESP® operates automatically,
the engine and ignition must be shut off when
testing the parking brake on a brake test
dynamometer and such testing should be no
longer than 10 seconds.
Active braking action through ESP
® may
otherwise seriously damage the brake system
which is not covered by the Mercedes-Benz
Limited Warranty.
iThe ESP® will only function properly if you
use wheels of the recommended tire size
(
page 414).
iThe ABS, BAS, and ESP® are automatically
switched off when the differential locks are
switched on (
page 175).
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99
Controls in detail
Locking and unlocking
Seats
Memory function
Lighting
Instrument cluster
Control system
Automatic transmission
Transfer case
Differential locks
Good visibility
Climate control
Power windows
Power tilt/sliding sunroof
Driving systems
Loading
Useful features
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173
Controls in detail
Differential locks
 Differential locks
For more information on off-road driving,
see “Off-road driving” (
page 253).
Differential locks improve the vehicle’s
tractive power off-road. Switch on
differential locks:

for off-road driving

to turn the ABS off during off-road
driving

for driving through water

when driving on deep snow and icy or
fouled surfaces
!Do not engage the front axle differential
lock when driving around tight corners. This
restricts steering ability.
!When driving off-road, apply only moderate
pressure to the accelerator pedal if the differen-
tial locks are switched on.
When running on a (single-axle) dynamometer –
no matter how briefly – you must:

raise the non-driven axle
or

disconnect its drive shaft
and

engage the transfer differential lock
Otherwise the transfer case can be damaged,
which is not covered by the Mercedes-Benz
Limited Warranty.
Warning!G
Never drive on pavement with differential
locks engaged.
Steering control will be strongly affected
with the differential locks activated.
The ABS, BAS, and ESP
® are switched off
automatically when the transfer case
differential lock is activated.
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174 Controls in detail
Differential locks
A few words about differentials and
differential locks
When a vehicle negotiates a turn, wheels
on the outside of the curve must travel
farther and rotate faster than the inside
wheels. The differential, the operation of a
set of gears that allows the powered
wheels in a vehicle to turn at different
speeds, makes this essential function
possible.
The drawback is that the differential also
sends most of the engine’s power to the
wheel with the least load or strain on it. For
example, if one of a vehicle’s powered
wheels sits on a patch of snow and spins
because there is no traction, all of the
engine’s power will go to that wheel
because the power will take the path of
least resistance. Meanwhile, the opposite
wheel, sitting on dry pavement where it
could get enough grip to start the vehicle
moving, sits idle because it receives no
power. The Electronic Traction System (4-ETS)
addresses this problem and provides for
good control and steer
ing ability by auto-
matically slowing the slipping wheel and
thus increasing the power to the other
non-slipping drive wheels to get the vehicle
moving. The ESP
® and 4-ETS in this vehicle
feature such intelligent limited-slip
differential technology, ideally suited for
on-road and light off-ro ad driving. Transfer
case position LOW (
page 170) also
enhances off-road driving capabilities
(
page 253).
More extreme off-road conditions may call
for another solution, engaging a differen-
tial lock or preventing the differential from
operating altogether. As part of its stan-
dard equipment, this vehicle comes with
three differential locks: front, transfer case
(center) and rear. Each can be engaged
simply by pushing dashboard-mounted
switches in sequential order (center, rear,
front) (
page 175). When the transfer
case (center) differential is locked, half of
the engine’s power is automatically
distributed to the front wheels and half to the rear wheels. When the rear differential
is locked, power going to the rear wheels is
equally distributed, so that both rear
wheels turn at the same speed and torque.
When the front differential is locked, all
four wheels now turn with equal power and
torque. Please be aware that engaging the
differential locks will significantly reduce
the steering ability of the vehicle.
For your safety and the safety of others
and to prevent damage to the vehicle, the
differential locks must not be engaged
when driving on paved roads. It is
important to understand that during
on-road/paved driving, differentials are
absolutely necessary for providing the
essential control and steering ability of the
vehicle. The differential locks, therefore,
must not be engaged when driving on
paved roads and should only be used to
the extent necessary to negotiate off-road
conditions which cannot be handled by the
systems (automatic 4-ETS, the ESP®,
manual switch positi on “LOW” of transfer
case) this vehicle comes equipped with.
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175
Controls in detail
Differential locks
Switching differential locks on and off
The switches are located on the upper part
of the center console.
1 Transfer case (center) differential lock
2 Rear axle differential lock
3 Front differential lock
4 Engagement indicator lamps (yellow)
5 Function indicator lamps (red) Switching differential locks on
Transfer case differential lock
Press switch
1.
The yellow engagement indicator
lamp 4 for the transfer case
differential lock comes on.
The ESP
® warning lamp v comes
on. When the differential lock engagement
operation has been completed, the red
function indicator lamp
5 comes on.
The message
ABS not available
differential locked
appears in the
multifunction display.
The ESP
® warning lamp v and
the - indicator lamp 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
lock 2
or

switch on rear axle differential
lock 2 and front differential
lock 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
[8 km/h]).

Do not engage differential locks if the driving
wheels are spinning due to lack of traction.

Do not engage differential locks on paved
roads.
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176 Controls in detail
Differential locks
Rear axle differential lock
Press switch2.
The yellow engagement indicator
lamp 4 comes on first, followed by the
red function indicator lamp 5.
The rear axle differential lock is
switched on.
Front differential lock
Press switch 3.
The yellow engagement indicator
lamp 4 comes on first, followed by the
red function indicator lamp 5.
The front differential lock is switched
on. Switching differential locks off
There are two different methods to
disengage 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 switch 1.
The yellow engagement indicator
lamps 4 go out first. The red
function indicator lamps 5 go out
when the switching process has
been carried out in the differential.
To activate the ESP
®, BAS, and ABS
systems, drive again for 3 seconds using a
constant driving style. All messages in the multifunction display
disappear. The ESP
® warning lamp
v
and the - indicator lamp in the
instrument cluster go out.
iIf the red function indicator lamps 5 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 174).
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244 Operation
In the “Operation” section you will find
detailed information on operating, main-
taining and caring for your vehicle.
The first 1 000 miles (1 500 km)
The more cautiously you treat your vehicle
during the break-in period, the more satis-
fied you will be with its performance later
on.

Drive your vehicle during the first
1 000 miles (1 500 km) at varying but
moderate vehicle and engine speeds.

During this period, avoid heavy loads
(full throttle driving) and excessive
engine speeds (no more than
2/3 of
maximum rpm in each gear).

Shift gears in a timely manner.

Avoid accelerating by kick-down.

Do not attempt to slow the vehicle
down by shifting to a lower gear using
the gear selector lever.

Select gear ranges 3, 2 , or 1
(
page 167) only when driving at
moderate speeds (for hill driving).
After 1 000 miles (1 500 km) you may
gradually increase vehicle and engine
speeds to the permissible maximum. All of the above instructions, as may apply
to your vehicle type, also apply when
driving the first 1 000 miles (1 500 km)
after the engine, the transfer case, the
front differential or th
e rear differential has
been replaced.
!Additional instructions for AMG vehicles:

During the first 1 000 miles (1 500 km), do
not exceed a speed of 85 mph (140 km/h).

During this period, avoid engine speeds
above 4 500 rpm in each gear.
iG55AMG:
For better protection of the front and rear differ-
ential, the oil must be changed after a break-in
period of 1 900 miles (3 000 km).
Changing the oil in the front and rear differential
increases the service life and helps reduce noise
from the differential locks.
See Maintenance Booklet for additional infor-
mation and Factory Approved Service Products
pamphlet (USA only) for information on the
approved service product required to perform
the front and rear axle oil change.
iAlways obey applicable speed limits.
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