2007 MERCEDES-BENZ GL450 Owner's Manual

56 Getting started
Driving
1Seat belt outlet
2Latch plate
3Buckle
4Release button
With a smooth motion, pull the belt out
of seat belt outlet1.
Place the shoulder portion of the belt
across the top of your shoulder and the
lap portion across your hips.
Push latch plate2 into buckle3
(
page 56) until it clicks.
If necessary, tighten the lap portion to
a snug fit by pulling shoulder portion
up.
Seat belt height adjustment
1Release button
Press release button1 and move the
seat belt height adjuster upward or
downward.
Proper use of seat belts

Do not twist the belt when fastening.

Adjust seat belt so that the shoulder
portion is located as close as possible
to the middle of the shoulder (it should
not touch the neck). Never pass the
shoulder portion of the belt under your
arm. For this purpose, you can adjust
the height of the belt outlet
(
page 56).

Position the lap belt as low as possible
on your hips (over hip joint) and not
across the abdomen.

Place the seat backrest in a position
that is as upright as possible.

57 Getting started
Driving

Never use a seat belt for more than one
person at a time.

Do not fasten a seat belt around a
person and another object at the same
time. When using a seat belt to secure
infant or toddler restraints or children
in booster seats, always follow the
child seat manufacturer’s instructions.

Check your seat belt periodically
during travel to make sure that it is
properly positioned.

Make sure the seat belt is always fitted
snugly. Take special care of this when
wearing loose clothing.
Starting the engine
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 (CO), and inhaling it can cause un-
consciousness and possible 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.

58 Getting started
Driving
Automatic transmission
Gearshift pattern for automatic
transmission
PPark position
RReverse gear
NNeutral
DDrive position
For more information on how to operate
the gear selector lever, see “Automatic
transmission” (
page 192).Starting with the SmartKey
For information on turning off the engine
with the SmartKey, see “Turning off the en-
gine” (
page 69).
Gasoline engine
Make sure the automatic transmission
is set toP.
The transmission position indicator in
the multifunction display should be
on
P (page 157).
Do not depress the accelerator.
Turn the SmartKey in the starter switch
to position3 (
page 41) and hold until
the engine starts.Diesel engine
Make sure the automatic transmission
is set toP.
The transmission position indicator in
the multifunction display should be
on
P (page 157).
Do not depress the accelerator.
Turn the SmartKey in the starter switch
to position2 (
page 42).
Preglow indicator lampqin the
instrument cluster comes on.
As soon as preglow indicator
lampq goes out, turn the SmartKey
in the starter switch to position3
(
page 42) and release it.
The engine starts automatically.
iYou can also use the “touch-start” function.
Turn the SmartKey to position3 and release it
again immediately. The engine then starts auto-
matically.
iIf the engine is at operating temperature,
preglow indicator lampqmay not stay on
and you can start the engine without preglowing.

59 Getting started
Driving
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 button
1USA only
2Canada only
Make sure KEYLESS-GO start/stop
button1 is inserted in the starter
switch (
page 43).
For information on turning off the engine
with KEYLESS-GO, see “Turning off with
KEYLESS-GO*” (
page 70).Gasoline engine
Make sure the automatic transmission
is set toP.
The transmission position indicator in
the multifunction display should be
on
P (page 157).
Depress the brake pedal during the
starting procedure.
Do not depress the accelerator.
Press KEYLESS-GO start/stop
button1 once.
The engine starts if the SmartKey with
KEYLESS-GO is in the vehicle.
Warning!G
As long as the SmartKey with KEYLESS-GO
i s i n y o u r v e h i c l e , t h e v e h i c l e c a n b e s t a r t e d .
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.
iIf you wish to start the engine using the
SmartKey instead of the KEYLESS-GO feature,
remove the KEYLESS-GO start/stop button from
the starter switch (
page 43).

60 Getting started
Driving
Diesel engine
Make sure the automatic transmission
is set toP.
The transmission position indicator in
the multifunction display should be
on
P.
Depress the brake pedal during the
starting procedure.
Do not depress the accelerator.
Press KEYLESS-GO start / stop
button1 once.
The engine preglows and starts if the
SmartKey with KEYLESS-GO is in the
vehicle.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
button from starter switch (
page 43).
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 57). Remember that extended
starting attempts can drain the battery.
Get a jump start (page 538).
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.
Contact an authorized Mercedes-Benz
Light Truck Center or call Roadside
Assistance.
Parking brake
1Parking brake pedal
2Release handle
iIf the engine is at operating temperature,
the time the engine needs to preglow is reduced.

61 Getting started
Driving
Release the parking brake by pulling on
release handle2.
The warning lamp; (USA only)
or3(Canada only) in the
instrument cluster goes out.
Driving off
Depress the brake pedal.
The gear selector lever can now be
used.
Shift automatic transmission toD orR
(
page 194).
Release the brake pedal.
Carefully depress the accelerator
pedal.After a cold start, the automatic transmis-
sion shifts at a higher engine revolution.
This allows the catalytic converter (gaso-
line engine) or the oxidation catalyst (die-
sel engine) to reach its operating
temperature earlier.
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. Children could release the
parking brake, which could result in an acci-
dent and/or serious personal injury.
iWait for the gear selection process to com-
plete before setting the vehicle in motion.
iShifting from gear positionP to positionR,
N, orD is only possible with the brake pedal
depressed. Without the brake pedal depressed,
the gear selector lever can be moved, but the
parking pawl remains engaged, not allowing
shifting to occur.
!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 (
page 60).
iOnce the vehicle is in motion, the automatic
central locking system engages and the locking
knobs drop down.
The automatic door lock feature can be
deactivated (
page 183).
You can open a locked door from the inside.
Open door only when conditions are safe to do
so.

62 Getting started
Driving
For more information, see “Driving instruc-
tions” (
page 349).
For information on off-road driving, see
“Off-road driving” (
page 357).
Switching on headlamps
Low beam headlamps
The exterior lamp switch is located on the
dashboard to the left of the steering wheel.
Exterior lamp switch
1Off
2Low beam headlamps on
Turn the exterior lamp switch to
positionB.
The low beam headlamps come on.
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 the 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 accelerator
pedal and applying the brakes reduces engine
performance and causes premature brake and
drivetrain wear.

63 Getting started
Driving
High beam
The combination switch is located on the
left of the steering column.
Combination switch
1High beam
2High beam flasher
Push the combination switch in
direction of arrow1.
The high beam headlamp indicator
lampA in the instrument cluster
comes on (
page 26).
For more information on headlamps, see
“Lighting” (
page 145).
Turn signals
The combination switch is located on the
left of the steering column.
Combination switch
1Turn signals, right
2Turn signals, left
Press the combination switch in
direction of arrow1 or2.
The corresponding turn signal indicator
lampL orK in the instrument
cluster flashes (
page 26).The combination switch resets automati-
cally after major steering wheel move-
ment.
Windshield wipers
The combination switch is located on the
left of the steering column.
Combination switch
1Single wipe
Wiping with windshield washer fluid
2Switching on windshield wipers
iTo signal minor directional changes such as
changing lanes, press combination switch only
to point of resistance and release. The corre-
sponding turn signal will flash three times.