engine MERCEDES-BENZ ML500 2006 W163 Repair Manual

240 Controls in detailDriving systems
Canceling cruise control
There are several ways to cancel the cruise
control:
Step on the brake pedal.
The cruise control is canceled. The last
speed set is stored for later use.
or

Briefly push the cruise control lever in
direction of arrow3 (
page 239).
The cruise control is canceled. The last
speed set is stored for later use.
iOn uphill grades, the cruise control
may not be able to maintain the set
speed. Once the grade eases, the set
speed will be resumed.
On downhill grades, the cruise control
maintains the set speed with braking
from the vehicle’s braking system. In
addition, on longer downhill grades the
automatic transmission will automati-
cally downshift.
iThe last stored speed is canceled when
you turn off the engine.
iThe cruise control switches off auto-
matically when

you step on the brake pedal


you depress the parking brake
pedal
The cruise control also switches off au-
tomatically when


the vehicle speed is below 20 mph
(30 km/h)


the ESP
® is in operation or
switched off with the ESP
® switch
(
page 97)


you set the automatic transmission
toN while driving
An acoustic warning sounds and the
message
Cruise control OFF
appears
in the multifunction display.

248 Controls in detailDriving systems
Release the cruise control lever.
The new speed is set.
Each time the set speed is changed, DSR
will appear in the multifunction dis-
play and the newly set speed is shown.
Off-road driving program
The off-road driving program is designed to
assist the driver when driving off-road in
terrain and crossing water. The off-road
driving program adjusts the engine power
and shifting of the automatic transmission
to be more suitable for the off-road use of
the vehicle. In addition, the ABS, ESP
®,
and 4-ETS designed for off-road use are
automatically activated.
In the following situations you should
switch to the Off-road driving program:


during off-road driving


when crossing water


when towing up or down on steep
gradientsThe switch is located on the lower part of
the center console.
1Switch for Off-road driving program
2Indicator lamp
iThe new speed is set and the vehicle
will accelerate or decelerate. Keep in
mind that it may take a brief moment
until the vehicle has reached the new
set speed.iThe set speed is canceled when DSR is
switched off. If DSR is switched on
again, DSR will use the programmed
default speed (
page 176).


250 Controls in detailDriving systems
Start the engine (
page 34).

Press ADS switch1 repeatedly until
the desired suspension tuning is
reached.
Vehicle level control*
The vehicle level control automatically
regulates the ride height to

reduce fuel consumption


improve driving stability by lowering
the center of gravity
The vehicle automatically regulates its ride
height based on the set vehicle height and
the current speed:


The ride height of the vehicle is re-
duced with increasing vehicle speed.


The ride height of the vehicle changes
from the high-speed level back to the
normal highway level as the vehicle
speed is decreased.
The parked vehicle begins adjusting to the
set vehicle level as soon the doors and tail-
gate are


unlocked
or


opened.
In order to operate the vehicle level control
switch (
page 252), however, the engine
must be running.
For safety reasons, the vehicle lowers only
when all doors are closed. The lowering
procedure is interrupted as soon as a door
is opened. The lowering will resume as
soon as all doors are closed.
iThe setting is stored when you turn off
the engine.
Warning!
G
Please be aware that by raising the vehicle
level, the center of gravity also rises. There-
fore, always ensure that the vehicle level is
as low as possible. With higher ride height
the ESP
® may activate earlier in certain
situations.
Warning!
G
Make sure that no one is near the wheel
housing or under the vehicle when you lower
the vehicle while it is standing still. Limbs
could become wedged into or under the ve-
hicle.
For safety reasons, the vehicle can only be
lowered with the doors closed. Lowering is
interrupted if a door is opened and will con-
tinue after the door is closed again.

253 Controls in detail
Driving systems
Setting the raised level
Only select the raised level if appropriate
for the driving situation encountered.
Otherwise:

fuel consumption may increase


handling characteristics of the vehicle
may be unfavorable

Start the engine (
page 34).
If the indicator lamp2 is off:

Press switch1.
Indicator lamp2 flashes. The vehicle
adjusts to the raised level.
The following message appears in the mul-
tifunction display while the level is being
set:When the raised level is reached, the
following message appears in the multi-
function display for five seconds:
Indicator lamp2 (
page 252) comes on
continuously.
You can select the raised level at speeds
up to 40 mph (64 km/h). At higher speeds,
the message
Level selection not
permitted appears in the multifunction
display.Setting the highway/high-speed level

Start the engine (
page 34).
If the indicator lamp2 (page 252) is
on:

Press switch1 (
page 252).
Indicator lamp2 flashes. The vehicle
adjusts to the highway/high-speed
level.
The following message appears in the
multifunction display while the level is
being set:
iThe message can be cleared by press-
ing theèÿk or
buttonj on the multifunction
steering wheel.
iThe message can be cleared by press-
ing theèÿk or
buttonj on the multifunction
steering wheel.


277 Controls in detail
Useful features
Cigarette lighter*
1Cigarette lighter
Switch on the ignition (
page 34).

Open the ashtray (
page 275).

Push in cigarette lighter1.
The cigarette lighter will pop out auto-
matically when hot.
12-V sockets
Power outlets are located in the front pas-
senger footwell, the rear passenger foot-
well, and the right-hand side of the cargo
compartment.
Switch on the ignition (
page 34).
Warning!
G
Never touch the heating element or sides of
the cigarette lighter; they are extremely hot.
Hold the knob only.
When leaving the vehicle always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.iThe cigarette lighter socket can be
used to accommodate electrical acces-
sories up to a maximum of 180 W.
If the engine is off, and the cigarette
lighter is being used extensively, the
vehicle battery may become
discharged.
iThe power outlets can be used to
accommodate electrical consumers
(e.g. air pump, auxiliary lamps) up to a
maximum of 240 W.
If the engine is off, the battery may be-
come discharged if used for long peri-
ods of time.

279 Controls in detail
Useful features
Floormats*
1Retainer pin
2Eyelet
Removing

Pull floormat off of retainer pins1.

Remove the floormat.
Installing

Lay down the floormat.

Press the floormat eyelets2 onto re-
tainer pins1.
Telephone*
Radio transmitters, such as a portable tele-
phone or a citizens band unit, should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Light Truck Center
for information on the installation of an ap-
proved external antenna. Refer to the radio
transmitter operation instructions regard-
ing use of an external antenna.
Warning!
G
Whenever you are using floormats, make
sure there is enough clearance and that the
floormats are securely fastened.
Floormats should always be securely fas-
tend using eyelets
2
and retainer pins
1
.
Before driving off, check that the floormats
are securely in place and adjust them if nec-
essary. A loose floormat could slip and
hinder proper functioning of the pedals.
Do not place several floormats on top of
each other as this may impair pedal move-
ment.
iTo install or remove the floormat more
easily, move the driver’s seat or front
passenger seat as far to the rear as
possible (
page 39).
Warning!
G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or serious
personal injury.

297 Operation
The first 1000 miles (1500 km)
Driving instructions
At the gas station
Engine compartment
Tires and wheels
Winter driving
Maintenance
Vehicle care

298 OperationIn the “Operation” section you will find
detailed information on operating, main-
taining and caring for your vehicle.The first 1000 miles (1500 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
1000 miles (1500 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 positions3, 2 or1 only when
driving at moderate speeds (for hill
driving).After 1000 miles (1500 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 driv-
ing the first 1000 miles (1500 km) after
the engine, the transfer case, the front dif-
ferential or the rear differential has been
replaced.
iAlways obey applicable speed limits.

299 Operation
Driving instructions
Driving instructions
Drive sensibly – save fuel
Fuel consumption, to a great extent, de-
pends on driving habits and operating con-
ditions.
To save fuel you should:

Keep tires at the recommended infla-
tion pressures.


Remove unnecessary loads.


Remove roof rack when not in use.


Allow engine to warm up under low
load use.


Avoid frequent acceleration and decel-
eration.


Have all maintenance work performed
at the intervals specified in the
Maintenance Booklet and as required
by the Maintenance System (U.S. vehi-
cles) or FSS (Canada vehicles). Contact
an authorized Mercedes-Benz Light
Truck Center.Fuel consumption is also increased by
driving in cold weather, in stop-and-go traf-
fic, on short trips and in hilly areas.
Drinking and driving
PedalsPower assistance
Warning!
G
Drinking and driving and/or taking drugs
and driving are a very dangerous combina-
tion. Even a small amount of alcohol or
drugs can affect your reflexes, perceptions
and judgment.
The possibility of a serious or even fatal
accident are greatly increased when you
drink or take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or
taking drugs.
Warning!
G
Keep driver’s foot area clear at all times. Ob-
jects stored in this area may impair pedal
movement.Warning!
G
With the engine is not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle.

301 Operation
Driving instructions
After hard braking, it is advisable to drive
on for some time, rather than immediately
park, so that the air stream will cool down
the brakes faster.Driving off
Apply the brakes to test them briefly after
driving off. Perform this procedure only
when the road is clear of other traffic.
Warm up the engine smoothly. Do not
place full load on the engine until the oper-
ating temperature has been reached.When starting off on a slippery surface, do
not allow a drive wheel to spin for an
extended period with the ESP
® switched
off. Doing so may cause serious damage to
the drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.
Parking
!When driving down long and steep
grades, relieve the load on the brakes
by shifting into a lower gear to use the
engine’s braking power. This helps
prevent overheating of the brakes and
reduces brake pad wear.
!Simultaneously depressing the
accelerator pedal and applying the
brake reduces engine performance and
causes premature brake and drivetrain
wear.!Set the parking brake whenever park-
ing or leaving the vehicle. In addition,
move gear selector lever to positionP.
When parking on hills, always turn front
wheels towards the curb.
Warning!
G
To reduce the risk of personal injury, or
damage to the vehicle powertrain, as a
result of vehicle/ trailer movement, before
turning off the engine and leaving the vehi-
cle always:

Keep right foot on brake pedal.


Firmly depress parking brake pedal.


Shift the automatic transmission to
positionP.


Slowly release brake pedal and let vehi-
cle and trailer roll into chocks until
stopped.


When parked on an incline, turn front
wheel towards the road curb.


Have a second person place wheel
chocks on downhill side of left and right
trailer wheels.