keyless MERCEDES-BENZ GL450 2007 X164 Workshop Manual

203 Controls in detail
Transfer case
Transfer case
LOW RANGE mode*
The LOW RANGE mode is available on vehi-
cles with enhanced off-road package*.
In the following situations you should
switch to LOW RANGE mode:

during off-road driving (page 357)

when crossing water (page 362)

when towing up or down on steep
gradients
With the LOW RANGE selected, the
engine’s power delivery and the shifting
behavior of the automatic transmission are
adjusted. Furthermore, the ABS, ESP
® and
4-ETS functions especially adapted to
off-road travel are activated.
For information on driving safety systems
during LOW RANGE mode, see “Driving
safety systems” (
page 103).
For more information on Off-road driving,
see “Off-road driving” (
page 357).Gear Ranges
There are two possible settings.
!Operational or performance test must only
be conducted on a two-axle dynanometer. If
such tests are necessary, contact an authorized
Mercedes-Benz Light Truck Center. You could
otherwise seriously damage the brake system or
the transfer case which is not covered by the
Mercedes-Benz Limited Warranty.
!Because the ESP® operates automatically,
the engine and ignition must be shut off
(SmartKey in starter switch position0 or1 or
KEYLESS-GO* start/stop button in
position0or1) when testing the parking brake
on a brake test dynamometer and such testing
should be no longer than 10 seconds.
Active braking action through the ESP
® may
otherwise seriously damage the brake system
which is not covered by the Mercedes-Benz
Limited Warranty.
iThe vehicle is equipped with full-time
four-wheel drive. Both the front and rear axles
are powered at all times when the vehicle is
being operated.
HIGH
RANGERoad position for all normal
driving situations.
(LOW RANGE mode off)
LOW
RANGEOff-road position for traveling
on rough terrain.
(LOW RANGE mode on)
Also use the off-road position
when driving on-road on steep
gradients, especially when
towing a trailer.
LOW RANGE acts by raising
the engine’s gear ratio. The ve-
hicle travels at roughly third
the speed compared to when
in the HIGH RANGE position,
leading to an increase in the
engine’s drive power.

249 Controls in detail
Power windows
Switch on the ignition (page 42).Opening the door windows
Press switch1, 2, 3, or6
(
page 248) to the resistance point.
The corresponding door window moves
downwards until you release the
switch.
Closing the door windows
Pull switch1, 2, 3, or6
(
page 248) to the resistance point.
The corresponding door window moves
upwards until you release the switch.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing a door window by pulling and
holding the switch, or by pressing and hold-
ing button‹on the SmartKey, by press-
ing and holding the lock button (vehicles
with KEYLESS-GO*) on a door handle, the
automatic reversal function will not operate.
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. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.iYou can also open or close the windows
using the SmartKey, see “Summer opening fea-
ture” (
page 251) and see “Convenience clos-
ing feature” (
page 252).
Depending on the current position, the power
windows may also open or close when the air
recirculation button: on the control panel of
the climate control (
page 218) or automatic
climate control* (
page 232) is pressed and
held.
iWith the SmartKey in starter switch
position0 or removed from the starter switch,
the windows can be operated

until you open the driver’s or front passenger
door

for at least 5 minutesWarning!G
If you pull and hold the switch up when clos-
ing the door window, and upward movement
of the door window is blocked by some ob-
struction including but not limited to arms,
hands, fingers, etc., the automatic reversal
will not operate.

251 Controls in detail
Power windows
Closing
Press and release switch2.
To stop the hinged quarter window:
Press and release switch2 once
more.
Synchronizing the door windows
The door windows must be resynchronized

after the battery was disconnected

if the door windows cannot be fully
opened (Express-open) or closed
(Express-close)
Close all doors.
Switch on the ignition (page 42).
Pull and hold switch1, 2,3, or6
(
page 248).
Once a door window is closed com-
pletely, hold the respective switch for
approximately 3 seconds.
The door window is synchronized.
Summer opening feature
If the weather is warm, you can ventilate
the vehicle before driving off by simulta-
neously:

opening the door windows

opening the hinged quarter windows*

opening the tilt/sliding sunroof*

switching on the seat ventilation* for
the driver’s seat
Aim transmitter eye of the SmartKey or
SmartKey with KEYLESS-GO* at the
driver’s outside door handle.
The SmartKey or SmartKey with
KEYLESS-GO* must be in close proxim-
ity to the driver’s outside door handle.
Press and hold buttonΠon the
SmartKey or SmartKey with
KEYLESS-GO* until the windows and
the tilt/sliding sunroof* have reached
the desired position.
Release buttonΠon the SmartKey
or SmartKey with KEYLESS-GO* to
interrupt the opening procedure.
iWhen the obstruction sensor detects the
hinged quarter window is blocked during the
closing process, it will stop and open slightly.
iEach door window must be resynchronized
separately.

252 Controls in detail
Power windows
Convenience closing feature
When locking the vehicle, you can simulta-
neously close

the door windows

the hinged quarter windows*

the tilt/sliding sunroof*
Aim transmitter eye of the SmartKey or
SmartKey with KEYLESS-GO* at the
driver’s outside door handle
(
page 251).
The SmartKey or SmartKey with
KEYLESS-GO* must be in close proxim-
ity to the driver’s outside door handle.
Press and hold button‹ on the
SmartKey or SmartKey with
KEYLESS-GO* until the windows and
the tilt/sliding sunroof* are completely
closed.
Release button‹ on the SmartKey
or SmartKey with KEYLESS-GO* to
interrupt the closing procedure.
Vehicles with KEYLESS-GO*:
Press and hold the lock button on an
outside door handle (
page 72) until
the windows and the tilt/sliding sun-
roof* are completely closed.
Release the lock button on the outside
door handle to interrupt the closing
procedure.
Warning!G
When closing the windows and the
tilt/sliding sunroof*, make sure that there is
no danger of anyone being harmed by the
closing procedure.
If potential danger exists, proceed as fol-
lows:

Release button‹ to stop the closing
procedure. To open, press and hold
buttonŒ. To continue the closing
procedure after making sure that there
is no danger of anyone being harmed by
the closing procedure, press and hold
button‹.
Vehicles with KEYLESS-GO*:

Release the lock button (page 72) on
the driver’s outside door handle to stop
the closing procedure.

Immediately pull on the same outside
door handle and hold firmly. The win-
dows and the tilt/sliding sunroof* will
open for as long as the door handle is
held but the door is not opened.

253 Controls in detail
Power tilt/sliding sunroof*
Power tilt/sliding sunroof*
Opening and closing
Warning!G
When closing the tilt/sliding sunroof, make
sure that there is no danger of anyone being
harmed by the closing procedure.
If the tilt/sliding sunroof encounters an ob-
struction that blocks its path in a circum-
stance where you are closing the tilt/sliding
sunroof by moving the tilt/sliding sunroof
switch past the resistance point, or by
pressing and holding button‹ on the
SmartKey, by pressing and holding the lock
button (vehicles with KEYLESS-GO*) on the
door handle, the automatic reversal function
will not operate.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately halt-
ed by releasing the switch or, if the switch
was moved past the resistance point and re-
leased, by moving the switch in any direc-
tion.
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may
shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts prop-
erly as entire body parts or portions of them
may protrude from the passenger compart-
ment.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it 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.!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding sunroof.
Do not open the tilt/sliding sunroof if there is
snow or ice on the roof, as this could result in
malfunctions.
The tilt/sliding sunroof can be opened or closed
manually should an electrical malfunction occur
(
page 503).
!Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the tilt/sliding sunroof when leaving the
vehicle. If water enters the vehicle interior,
vehicle electronics could be damaged which is
not covered by the Mercedes-Benz Limited
Warranty.
iWhen the tilt/sliding sunroof is open, reso-
nance noises may result in addition to the usual
wind noises. They are caused by minimal pres-
sure changes in the passenger compartment. To
reduce or eliminate these noises, change the po-
sition of the tilt/sliding sunroof or open a side
window slightly.

254 Controls in detail
Power tilt/sliding sunroof*
The tilt/sliding sunroof is opened and
closed electrically. The switch for the
tilt/sliding sunroof is located on the
overhead control panel.
Sunroof switch
1Push back to slide sunroof open
2Push forward to slide sunroof closed
3Push up to raise sunroof at rear
4Pull down to lower sunroof at rear
With the sunroof closed or tilted open, a
screen can be slid into the roof opening to
guard against sun rays. When sliding the
sunroof open, the screen will also retract.
Switch on the ignition (page 42).
Opening and closing
To open, close, raise, or lower the
tilt/sliding sunroof, move the sunroof
switch to the resistance point in the
required direction of arrows1to4
(
page 254).
Release the sunroof switch when the
tilt/sliding sunroof has reached the de-
sired position.
iYou can also open or close the tilt/sliding
sunroof using the SmartKey or the
KEYLESS-GO* function, see “Summer opening
feature” (
page 251) and see “Convenience
closing feature” (
page 252).
iDepending on the current position, the
tilt/sliding sunroof may also open or close when
the air recirculation button: on the control
panel of the climate control (
page 218) or
automatic climate control* (
page 232) is
pressed and held.

255 Controls in detail
Power tilt/sliding sunroof*
Fully opening (Express-open) and
closing (Express-close)
To fully open or close the tilt/sliding
sunroof, move the sunroof switch past
the resistance point in the required
direction of arrows1to2
(
page 254) and release.
The tilt/sliding sunroof opens or closes
completely.
Stopping the power tilt/sliding sunroof
during Express-open
Move the sunroof switch in any direc-
tion.
The movement of the tilt/sliding sun-
roof stops.
Synchronizing
The tilt/sliding sunroof must be
synchronized

after the battery has been
disconnected or discharged

after the tilt/sliding sunroof has been
closed manually (
page 503)

after a malfunction

if the tilt/sliding sunroof does not open
smoothly
Remove the fuse for the tilt/sliding
sunroof from the fuse box
(
page 544).
iIf the movement of the tilt/sliding sunroof is
blocked during the closing procedure, the
tilt/sliding sunroof will stop and reopen slightly.
Warning!G
If the tilt/sliding sunroof encounters an ob-
struction that blocks its path in a circum-
stance where you are closing the tilt/sliding
sunroof by moving the tilt/sliding sunroof
switch past the resistance point, or by
pressing and holding button‹ on the
SmartKey, by pressing and holding the lock
button (vehicles with KEYLESS-GO*) on the
door handle, the automatic reversal function
will not operate.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately halt-
ed by releasing the switch or, if the switch
was moved past the resistance point and re-
leased, by moving the switch in any direc-
tion.
iFor information on which fuse box contains
the fuse for the power tilt/sliding sunroof, see
the fuse chart provided with the vehicle tool kit
(
page 495).

317 Controls in detail
Useful features
Closing CD changer
1CD changer
Ge ntly pu sh CD c ha nger1 up in direc-
tion of arrow until it engages.
For information on CD changer operation,
see separate COMAND system operating
instructions.Locking and unlocking the glove box
separately
You can lock the glove box separately, e.g.
when the vehicle is in the shop for service.
Take the mechanical key out of the
SmartKey or SmartKey with
KEYLESS-GO* (
page 500).
1Unlocking glove box
2Locking glove box
Insert mechanical key into glove box
lock.
Turn mechanical key to position2 to
lock the glove box.
Turn mechanical key to position1 to
unlock the glove box.
iThe glove box can only be locked or
unlocked with the mechanical key.

324 Controls in detail
Useful features
Cigarette lighter*
Switch on the ignition (page 42).1Cigarette lighter
Open the ashtray (page 323).
Push in cigarette lighter1.
The cigarette lighter will pop out auto-
matically when hot.
Warning!G
Never touch the heating element or sides of
the cigarette lighter; they are extremely hot.
Hold the knob only.
Make sure that any children traveling with
you do not injure themselves or start a fire
with the hot cigarette lighter.
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. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.
!The lighter socket can accommodate
12V DC electrical accessories (up to a maximum
of 180 W) designed for use with the standard
“cigarette lighter” plug type. Keep in mind, how-
ever, that connecting accessories to the lighter
socket (for example extensive connecting and
disconnecting, or using plugs that do not fit prop-
erly) can damage the lighter socket. With the
socket damaged, the lighter may no longer be
able to be placed in the heating (pushed-in) posi-
tion, or the lighter may pop out too early with the
lighter not hot enough.
To help avoid damaging the cigarette lighter
socket, we recommend connecting 12V DC elec-
trical accessories designed for use with the stan-
dard “cigarette lighter” plug type to the 12V
power outlets (
page 325) in your vehicle
whenever possible.
iIf the engine is off, and the cigarette lighter
is being used extensively, the vehicle battery
may become discharged.

328 Controls in detail
Useful features
Heated steering wheel*
The steering wheel heating warms up the
leather area of the steering wheel.
The stalk is on the lower left-hand side of
the steering wheel.
1Switching on
2Indicator lamp
3Switching offSwitching on
Switch on the ignition (page 42).
Turn switch at the tip of stalk in the
direction of arrow1.
The steering wheel is heated. Indicator
lamp2 comes on.Switching off
Turn switch at the tip of stalk in the
direction of arrow3.
The heated steering wheel is switched
off. Indicator lamp2 goes out.
For information on the steering wheel, see
“Multifunction steering wheel”
(
page 30).
iThe steering wheel heating is turned off tem-
porarily and the indicator lamp2 remains on
when

the temperature of the vehicle interior is
above 86°F (30°C)

the temperature of the steering wheel is
above 95°F (35°C)
When these conditions do not apply anymore,
steering wheel heating continues.
iIndicator lamp2 flashes or goes out

in case of power surge or undervoltage

in case of a steering wheel heating malfunc-
tion
iThe steering wheel heating switches off
automatically when you remove the SmartKey
from the starter switch or, on vehicles with
KEYLESS-GO*, when you switch off the ignition
(
page 41) and open the driver’s door.