2008 MERCEDES-BENZ GL450 keyless

57 Getting started
Driving
Starting with the SmartKey
For information on turning off the engine
with the SmartKey, see “Turning off the en-
gine” (
page 68).
Gasoline engine
Make sure the automatic transmission
is set toP.
The transmission position indicator in
the multifunction display should be
on
P (page 155).
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 155).
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.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.
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.
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.
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58 Getting started
Driving
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 69).Gasoline engine
Make sure the automatic transmission
is set toP.
The transmission position indicator in
the multifunction display should be
on
P (page 155).
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.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.
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).
iIf the engine is at operating temperature,
the time the engine needs to preglow is reduced.
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59 Getting started
Driving
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 56). Remember that extended
starting attempts can drain the battery.
Get a jump start (page 536).
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
1Release handle
Release the parking brake by pulling on
release handle1.
The warning lamp; (USA only)
or3(Canada only) in the
instrument cluster goes out.
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.
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62 Getting started
Driving
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
Switch on the ignition (page 42).
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.
!Do not operate the windshield wipers when
the windshield is dry. Dust that accumulates on
a windshield might scratch the glass and/or
damage the wiper blades when wiping occurs on
a dry windshield. If it is necessary to operate the
windshield wipers in dry weather conditions,
always operate the windshield wipers with wind-
shield washer fluid (
page 64).
!If anything blocks the windshield wipers
(leaves, snow, etc.), switch them off immediate-
ly.

For safety reasons, stop the vehicle in a safe
location and

remove SmartKey from starter switch
or

turn off the engine by pressing the
KEYLESS-GO* start/stop button and
open the driver’s door (with the driver’s
door open, starter switch is in
position0, same as with SmartKey
removed from starter switch)
before attempting to remove any blockage.

Remove blockage.

Turn the windshield wipers on again.
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67 Getting started
Parking and locking
Parking and locking
You have now completed your first drive.
You have properly stopped and parked
your vehicle. End your drive as follows.Parking brake
1Parking brake pedal
Warning!G
With the engine not running, there is no
power assistance for the brake and the
steering system. In this case, it is important
to keep in mind that a considerably higher
degree of effort is necessary to brake and
steer the vehicle.
Warning!G
Do not park this vehicle in areas where com-
bustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system, as these materials could be
ignited and cause a vehicle fire.
To reduce the risk of personal injury, or
damage to the vehicle drivetrain, as a result
of vehicle movement, before turning off the
engine and leaving the vehicle always:

Keep right foot on brake pedal.

Firmly depress parking brake pedal.

Shift the automatic transmission to
positionP.

Slowly release brake pedal.

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

Turn the SmartKey in the starter switch
to position0 and remove the SmartKey
from the starter switch, or press the
start/stop button (vehicles with
KEYLESS-GO*).

Take the SmartKey or the SmartKey with
KEYLESS-GO* with you and lock vehicle
when leaving.
Warning!G
Engaging the parking brake while the vehicle
is in motion can cause the rear wheels to
lock up. You could lose control of the vehicle
and cause an accident. In addition, the vehi-
cle’s brake lights do not light up when the
parking brake is engaged.
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68 Getting started
Parking and locking
Step firmly on parking brake pedal1.
When the engine is running, the
warning lamp; (USA only) or3
(Canada only) in the instrument cluster
comes on.
Switching off headlamps
Turn the exterior lamp switch toM
(
page 61).
For more information, see “Lighting”
(
page 143).
Turning off the engine
Shift the automatic transmission to
positionP (
page 191).
Apply the parking brake (page 67).
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 and/or shift the automatic
transmission out of positionP, either of
which could result in an accident and/or
serious personal injury.
Warning!G
Getting out of your vehicle with the
automatic transmission not fully engaged in
positionP is dangerous. Also, when parked
on an incline, positionP alone may not
prevent your vehicle from moving, possibly
hitting people or objects.
Always set the parking brake in addition to
shifting to positionP (
page 191).
When parked on an incline, also turn front
wheel towards the road curb.
iIf the engine cannot be turned off as
described, see “Emergency engine shut-down”
(
page 545).
Warning!G
Do not turn off the engine before the vehicle
has come to a complete stop. With the en-
gine not running, there is no power assis-
tance for the brake and steering systems. In
this case, it is important to keep in mind that
a considerably higher degree of effort is nec-
essary to brake and steer the vehicle.
iAlways set the parking brake in addition to
shifting the automatic transmission to positionP
(
page 191).
When parked on an incline, also turn front wheel
towards the road curb.
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69 Getting started
Parking and locking
Turning off with the SmartKey
Turn the SmartKey in the starter switch
to position0 (
page 41).
Remove the SmartKey from the starter
switch.
The immobilizer is activated.Turning off with KEYLESS-GO*
Press the KEYLESS-GO start/stop
button (
page 43) to turn off the
engine.
With the driver’s door closed, the start-
er switch is now in position1. With the
driver’s door opened, the starter switch
is set to position0, same as SmartKey
removed from starter switch
(
page 41).If you have started the engine with the
KEYLESS-GO start/stop button and can-
not turn it off as described above:
Remove the KEYLESS-GO start/stop
button from the starter switch.
Insert the SmartKey with KEYLESS-GO
into the starter switch.
The engine turns off. The starter switch
is in position0 (
page 41).
!Observe instructions when taking the
vehicle through an automatic conveyor type
car wash (
page 428).
!If you turn off the engine using the
SmartKey and

remove the SmartKey from the starter
switch
or

open a front door
the automatic transmission will shift to park
positionP automatically.
Keep in mind that turning off the engine with the
SmartKey alone only will automatically shift the
automatic transmission to neutral positionN.
iIn an emergency you can turn off the engine
while driving by pressing and holding the
KEYLESS-GO start/stop button for
approximately 3 seconds.
!If you turn off the engine using the
KEYLESS-GO start/stop button and open a front
door, the automatic transmission will shift to
park positionP automatically.
Keep in mind that turning off the engine using
the KEYLESS-GO start/stop button alone only
will automatically shift the automatic transmis-
sion to neutral positionN.
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70 Getting started
Parking and locking
Releasing seat belts
Press the seat belt release button
(
page 54).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
Locking
Exit the vehicle and close all doors and
the tailgate.
!Make sure the seat belt retracts fully so that
the seat belt and/or latch plate cannot get
caught or pinched in the door or in the seat
mechanism. This can damage the seat belt and
impair the effectiveness of the seat belt, and/or
cause damage to the door and/or door trim
panel. Such damage is not covered by the
Mercedes-Benz Limited Warranty.
Damaged seat belts must be replaced. Contact
an authorized Mercedes-Benz Light Truck
Center.
Warning!G
To prevent possible personal injury, always
keep hands and fingers away from the door
openings when closing the doors. Be espe-
cially careful when small children are
around.
Before closing doors, make sure there is no
possibility of someone getting caught in a
door during closing.
Warning!G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO* with you, and
lock your vehicle. Do not leave children un-
attended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.
iThe exterior lamps switch off automatically
when you remove the SmartKey from the starter
switch or open the driver’s door.
When the parking lamps or the rear fog lamp are
switched on and you remove the SmartKey from
the starter switch and open the driver’s door, an
acoustic signal sounds.
In addition the message
Switch Off Lights
appears in the multifunction display.
Switch off the parking lamps or the rear fog
lamp.
!Failure to switch off the parking lamps or the
rear fog lamp when leaving the vehicle may
result in a discharged battery.
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