2006 MERCEDES-BENZ G55AMG traction control

Contents
Operation......................................... 217
The first 1000 miles (1500 km) ......... 218
Driving instructions ............................ 220
Drive sensibly – save fuel ............. 220
Drinking and driving ..................... 220
Pedals .......................................... 220
Power assistance ......................... 221
Brakes .......................................... 221
Driving off..................................... 222
Parking ......................................... 222
Tires ............................................. 223
Hydroplaning ................................ 224
Tire traction .................................. 224
Tire speed rating .......................... 225
Winter driving instructions ........... 225
Standing water ............................. 226
Passenger compartment .............. 227
Off-road driving ............................ 227
Control and operation of
radio transmitters......................... 235
Driving abroad .............................. 236
Catalytic converter ....................... 236
Emission control........................... 237
Coolant temperature .................... 238At the gas station .............................. 239
Refueling ...................................... 239
Check regularly and before
a long trip ..................................... 240
Engine compartment ......................... 242
Hood ............................................ 242
Engine oil ..................................... 243
Transmission fluid level ................ 248
Coolant level ................................ 248
Windshield/rear window
washer system and headlamp
cleaning system ........................... 249
Battery ............................................... 251
Tires and wheels ................................ 252
Important guidelines .................... 252
Tire care and maintenance ........... 253
Direction of rotation ..................... 255
Loading the vehicle ...................... 255
Recommended tire inflation
pressure ....................................... 260
Checking tire inflation pressure ... 261
Tire labeling.................................. 263
Load identification ....................... 267
DOT, Tire Identification Number
(TIN) ............................................. 268
Maximum tire load ....................... 269Maximum tire inflation pressure .. 270
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 271
Tire ply material ........................... 273
Tire and loading terminology ........ 273
Rotating tires ............................... 276
Winter driving .................................... 278
Winter tires .................................. 278
Block heater (Canada only) .......... 279
Snow chains................................. 279
Maintenance...................................... 280
Clearing the maintenance
service indicator .......................... 281
Maintenance service term
exceeded ..................................... 281
Calling up the maintenance
service indicator .......................... 281
Resetting the maintenance
service indicator .......................... 282
Vehicle care....................................... 283
Cleaning and care of the vehicle .. 283

86 Safety and Security
Driving and safety systems
Switching off the ESP
To improve the vehicle’s traction, turn off
the ESP in driving situations where it would
be advantageous to have the drive wheels
spin and thus cut into surfaces for better
grip such as:

starting out on slippery surfaces and in
deep snow in conjunction with snow
chains

sand or gravel

when driving off-roadWhen the ESP is turned off,

engine torque is not limited.

the drive wheels can spin.The ESP control switch is located in the up-
per center console.
ESP on/off
Press upper half of switch.
ESP is deactivated and the ESP warning
lamp v in the instrument cluster
comes on.
Warning!G
The ESP should not be switched off during
normal driving other than in the circum-
stances described below. Disabling of the
system will reduce vehicle stability in stan-
dard driving maneuvers.!
Avoid spinning of a drive wheel for an
extended period of time with the ESP
switched off. This may cause serious
damage to the drivetrain which is not
covered by the Mercedes-Benz Limited
Warranty.
i
Turn ESP on immediately if the afore-
mentioned circumstances do not apply
anymore.

160 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 far-
ther 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 pos-
sible.
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 en-
gine’s power will go to that wheel because
the power will take the path of least resis-
tance. Meanwhile, the opposite wheel, sit-
ting 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 (ETS) ad-
dresses this problem and provides for
good control and steering 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 ETS in this vehicle
feature such intelligent limited-slip differ-
ential technology, ideally suited for
on-road and light off-road driving. Transfer
case position LOW (
page 157) also en-
hances off-road driving capabilities
(
page 227).
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
buttons in sequential order (center, rear,
front) (
page 161). When the transfer
case (center) differential is locked, half of
the engine’s power is automatically distrib-
uted 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 impor-
tant to understand that during
on-road/paved driving, differentials are
absolutely necessary for providing the es-
sential 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, manu-
al switch position “LOW” of transfer case)
this vehicle comes equipped with.

161 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
lamp4 for the transfer case differen-
tial lock comes on.
The ESP warning lampv comes on.
When the differential lock engagement
operation has been completed, the red
function indicator lamp5 comes on.
The message
ABS NOT AVAILABLE -
DIFFERENTIAL LOCKED
appears in the
multifunction display.
The ESP warning lampv and the
ABS- warning lamp in the instru-
ment cluster come on.
i
The 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 due
to lack of traction.

Do not engage on paved roads.


181 Controls in detail
Driving systems
Driving systems
The driving systems of your vehicle are de-
scribed on the following pages:

Cruise control, with which the vehicle
can maintain a preset speed.

Rear Parking Assist*, which assists
your parking maneuvers.
For information on the BAS, ABS, ESP,
4-ETS, and EBB driving systems, see “Driv-
ing and safety systems” (
page 80).
Cruise control
Cruise control automatically maintains the
speed you set for your vehicle.
Use of cruise control is recommended for
driving at a constant speed for extended
periods of time. You can set or resume
cruise control at any speed over 20 mph
(30 km/h).
The cruise control function is operated by
means of the cruise control lever.
The cruise control lever is the uppermost
lever found on the left-hand side of the
steering column (
page 23).
i
The cruise control should not be acti-
vated during-off road driving.
Warning!G
Cruise control is a convenience system de-
signed to assist the driver during vehicle op-
eration. The driver is and must always
remain responsible for the vehicle speed
and for safe brake operation.
Only use cruise control if the road, traffic
and weather conditions make it advisable to
travel at a steady speed.

The use of cruise control can be danger-
ous on winding roads or in heavy traffic
because conditions do not allow safe
driving at a steady speed.

The use of cruise control can be danger-
ous on slippery roads. Rapid changes in
tire traction can result in wheel spin and
loss of control.

Deactivate cruise control when driving
in fog.
The “Resume” function should only be oper-
ated if the driver is fully aware of the previ-
ously set speed and wishes to resume this
particular preset speed.

224 Operation
Driving instructions
Hydroplaning
Depending on the depth of the water layer
on the road, hydroplaning may occur even
at low speeds and with new tires. Reduce
vehicle speed, avoid track grooves in the
road and apply brakes cautiously in the
rain.
Tire traction
The safe speed on a wet, snow covered or
icy road is always lower than on a dry road.
You should pay particular attention to the
condition of the road whenever the outside
temperatures are close to the freezing
point.Mercedes-Benz recommends winter tires
(
page 278) with a minimum tread depth
of approximately 1/6in (4 mm) for the win-
ter season for all four wheels to ensure
normal balanced handling characteristics.
On packed snow, they can reduce your
stopping distance as compared with sum-
mer tires.
Stopping distance, however, is still consid-
erably greater than when the road is not
covered with snow or ice. Exercise appro-
priate caution.
Warning!G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire or driving at high
speed with a flat tire will cause excessive
heat build-up and possibly a fire.
Warning!G
If ice has formed on the road, tire traction
will be substantially reduced. Under such
weather conditions, drive, steer and brake
with extreme caution.
!
Avoid spinning of a drive wheel. This
may cause serious damage to the
drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.

271 Operation
Tires and wheels
Uniform Tire Quality Grading Standards
(U.S. vehicles)
Tire manufacturers are required to grade
tires based on three performance
factors: treadwear, traction and
temperature resistance.
1Treadwear
2Traction
3Temperature resistanceQuality grades can be found, where appli-
cable, on the tire sidewall between tread
shoulder and maximum section width. For
example:
All passenger car tires must conform to
federal safety requirements in addition to
these grades.Treadwear
The treadwear grade is a comparative rat-
ing based on the wear rate of the tire when
tested under controlled conditions on a
specified government test course. For ex-
ample, a tire graded 150 would wear one
and one-half (1
1/2) times as well on the
government course as a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly
from the norm due to variations in driving
habits, service practices and differences in
road characteristics and climate.
i
For illustration purposes only. Actual
data on tires are specific to each vehi-
cle and may vary from data shown in
above illustration.
TreadwearTractionTemperature
200AAA

272 Operation
Tires and wheels
Traction
The traction grades, from highest to low-
est, are AA, A, B, and C. Those grades rep-
resent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete. A tire
marked C may have poor traction perfor-
mance.Temperature
The temperature grades are A (the high-
est), B, and C, representing the tire’s resis-
tance to the generation of heat and its
ability to dissipate heat when tested under
controlled conditions on a specified indoor
laboratory test wheel. Sustained high tem-
perature can cause the material of the tire
to degenerate and reduce tire life, and ex-
cessive temperature can lead to sudden
tire failure. The grade C corresponds to a
level of performance which all passenger
car tires must meet under the Federal
Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning!G
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.
Warning!G
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underin-
flation, or excessive loading, either sepa-
rately or in combination, can cause
excessive heat build-up and possible tire
failure.