2006 MERCEDES-BENZ ML500 engine

34 Getting startedUnlockingStarter switch positions SmartKey
Starter switch0For removing SmartKey
1Power supply for some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary. If
a lamp in the instrument cluster re-mains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 382).
3Starting position
Warning!
G
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.
iWhen you switch on the ignition, the in-
dicator and warning lamps (except high
beam headlamp indicator lamp and
turn signal indicator lamps unless acti-
vated) in the instrument cluster come
on. The indicator and warning lamps
(except high beam headlamp indicator
lamp and turn signal indicator lamps if
activated) will go out when the engine
is running. This indicates that the
respective systems are operational.iWhen the SmartKey is removed from
the starter switch and the automatic
transmission is in a position other
thanP, the transmission automatically
shifts toP.

35 Getting started
Unlocking
SmartKey with KEYLESS-GO*
Vehicles equipped with the KEYLESS-GO
feature are supplied with a SmartKey with
integrated KEYLESS-GO function and a
removable KEYLESS-GO start/stop
button.With the KEYLESS-GO start/stop button
inserted and the SmartKey with
KEYLESS-GO present in the vehicle, press-
ing the KEYLESS-GO start/stop button


without the brake pedal depressed cor-
responds to the various starter switch
positions (
page 36)


with the brake pedal firmly depressed
will start the engine (
page 49)
If you wish or should there be a need to
insert the SmartKey with KEYLESS-GO in
the starter switch, the start/stop button
can be easily removed by pulling it out of
the starter switch.
!If the SmartKey cannot be turned in the
starter switch, the battery may not be
sufficiently charged.

Check the battery and charge it if
necessary (
page 440).


Get a jump start (
page 470).
To prevent accelerated battery dis-
charge or a completely discharged bat-
tery, always remove the SmartKey from
the starter switch when the engine is
not in operation.
iIf you firmly depress the brake pedal
while pressing the KEYLESS-GO
start/stop button, the engine starts
automatically.
iThe KEYLESS-GO start/stop button
does not need to be removed from the
starter switch when you leave the vehi-
cle. However, always take the
SmartKey with KEYLESS-GO with you
when you leave the vehicle. As long as
the SmartKey with KEYLESS-GO is in
your vehicle, the vehicle’s electrical
systems can be switched on or the
engine can be started using the
KEYLESS-GO start/stop button.Warning!
G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO 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.

36 Getting startedUnlocking1KEYLESS-GO start/stop button
2Starter switchKEYLESS-GO start/stop button1USA only
2Canada onlyThe SmartKey with KEYLESS-GO must be
located in the vehicle.

Make sure the automatic transmission
is set toP.

Do not depress the brake pedal.
Position 0
Before you press the KEYLESS-GO
start/stop button, the vehicle’s on-board
electronics have status0 (as with
SmartKey removed).
Position 1

Press the KEYLESS-GO start/stop
button once.
This supplies power for some electrical
consumers, such as seat adjustment.Ignition (or Position 2)

Press the KEYLESS-GO start/stop
button twice.
All lamps in the instrument cluster
come on. If a lamp in the instrument
cluster fails to come on when the igni-
tion is switched on, have it checked
and replaced if necessary. If a lamp in
the instrument cluster remains on after
starting the engine or comes on while
driving, refer to “Lamps in instrument
cluster” (
page 382).
iIf you now press the KEYLESS-GO
start/stop button

once more, the ignition (position2)
is switched on


twice more, the power supply is
again switched off

37 Getting started
Unlocking
For information on starting the engine
using the KEYLESS-GO start/stop button,
see “Starting with KEYLESS-GO*”
(page 50).iIf you now press the KEYLESS-GO
start/stop button once more, the
power supply is again switched off.iWhen you switch on the ignition, the
indicator and warning lamps (except
high beam headlamp indicator lamp
and turn signal indicator lamps unless
activated) in the instrument cluster
come on. The indicator and warning
lamps (except high beam headlamp in-
dicator lamp and turn signal indicator
lamps if activated) should go out when
the engine is running. This indicates
that the respective systems are
operational.

49 Getting started
Driving
Starting the engine Automatic transmission
Gearshift pattern for automatic
transmissionPPark position
RReverse gear
NNeutral
DDrive position
For more information on how to operate
the gear selector lever, see “Automatic
transmission” (
page 182).
Warning!
G
Do not pass belts over sharp edges. They
could tear.
Do not allow the belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the belt.
Never attempt to make modifications to
seat belts. This could impair the effective-
ness of the belts.
Do not bleach or dye seat belts as this may
severely weaken them. In a crash, they may
not be able to provide adequate protection.
Damaged seat belts or belts that were highly
stressed in an accident must be replaced.
Contact an authorized Mercedes-Benz Light
Truck Center.
Warning!
G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide, and inhaling it can cause uncon-
sciousness and lead to death.
Do not run the engine in confined areas
(such as a garage) which are not properly
ventilated. If you think that exhaust gas
fumes are entering the vehicle while driving,
have the cause determined and corrected
immediately. If you must drive under these
conditions, drive only with at least one win-
dow fully open.

50 Getting startedDrivingStarting with the SmartKey
Make sure the automatic transmission
is set toP.
The transmission gear positionP
appears in the multifunction display.

Do not depress accelerator.

Turn the SmartKey in the starter switch
to position3 (
page 34) and hold until
the engine starts.
For information on turning off the engine
with the SmartKey, see “Turning off en-
gine” (
page 62).Starting with KEYLESS-GO*
You can start your vehicle without the
SmartKey in the starter switch using the
KEYLESS-GO start/stop button in the
starter switch.
The SmartKey with KEYLESS-GO must be
located in the vehicle.
KEYLESS-GO start/stop button1USA only
2Canada only
Make sure the KEYLESS-GO start/stop
button1 is inserted in the starter
switch (
page 35).

Make sure the automatic transmission
is set toP.

Depress the brake pedal during the
starting procedure. Do not depress ac-
celerator.
iYou can also use the “touch-start”
function. Turn the SmartKey to
position3 and release it again immedi-
ately. The engine then starts automati-
cally.
Warning!
G
As long as the SmartKey with KEYLESS-GO
is in your vehicle, the vehicle can be started.
Therefore, never leave children unattended
in the vehicle, as they could otherwise acci-
dentally start the engine.
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle.

51 Getting started
Driving

Press KEYLESS-GO start/stop
button1 once.
The engine starts if the SmartKey with
KEYLESS-GO is in the vehicle.
For information on turning off the engine
with KEYLESS-GO, see “Turning off with
KEYLESS-GO*” (
page 63).Starting difficulties
If the engine does not start as described,
carry out the following steps:

If you are starting the engine with the
SmartKey, turn SmartKey in starter
switch to position0 and repeat starting
procedure.

If you are starting the engine with
KEYLESS-GO*: Close any doors that
may be open to allow for better
detection of the SmartKey with
KEYLESS-GO*.
Or:

Remove KEYLESS-GO* start/stop but-
ton from starter switch.

Start the engine with the SmartKey as
radio signals from another source may
be interfering with the SmartKey with
KEYLESS-GO*.

Repeat the starting procedure
(page 49). Remember that extended
starting attempts can drain the battery.

Get a jump start (
page 470).
If the engine does not start after several
starting attempts, there could be a mal-
function in the engine electronics or in the
fuel supply system.

Notify an authorized Mercedes-Benz
Light Truck Center.
iIf you wish to start the engine using the
SmartKey instead of the KEYLESS-GO
feature, remove the KEYLESS-GO*
start/stop button from starter switch
(page 35).

53 Getting started
Driving
After a cold start, the automatic transmis-
sion shifts at a higher engine revolution.
This allows the catalytic converter to reach
its operating temperature earlier.For more information, see “Driving instruc-
tions” (
page 299).
For information on off-road driving, see
“Off-road driving” (
page 306).
!If you hear a warning signal and the
message
Release parking brake
appears in the multifunction display
when driving off, you have forgotten to
release the parking brake.
Release the parking brake.Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of loss of control.
Warning!
G
It is dangerous to shift the automatic trans-
mission out ofP orN if the engine speed is
higher than idle speed. If your foot is not
firmly on the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.!Shift automatic transmission to
positionPorR only when the vehicle is
stopped in order to avoid damaging the
transmission.!Do not run cold engine at high engine
speeds. Running a cold engine at high
engine speeds may shorten the service
life of the engine.
!Simultaneously depressing the acceler-
ator pedal and applying the brake re-
duces engine performance and causes
premature brake and drivetrain wear.