2011 MERCEDES-BENZ G550 battery

arrow until battery tray cover : opens. Do
not hold the cover closed while doing so.XRemove the cover of the battery tray.XRepeatedly tap the SmartKey against your
palm until battery = falls out.XInsert the new battery with the positive
terminal facing upwards. Use a lint-free
cloth to do so.XInsert the front tabs of the battery tray's
cover first, and then press to close it.XCheck the function of all SmartKey buttons
on the vehicle.SmartKey65Opening and closingZ

Problems with the SmartKeyProblemPossible causes/consequences and M SolutionsYou cannot lock or
unlock the vehicle
using the SmartKey.The SmartKey battery is discharged or nearly discharged.XPoint the tip of the SmartKey at the driver's door handle from a
distance of approximately 1.5 ft (50 cm) and try to unlock or
lock the vehicle again.
If this does not work:
XCheck the SmartKey battery and replace it if necessary
( Y page 64).XLock or unlock the vehicle using the mechanical key
( Y page 68).The SmartKey is faulty.XLock or unlock the vehicle using the mechanical key
( Y page 68).XHave the SmartKey checked at a qualified specialist workshop.You have lost a
SmartKey.XHave the SmartKey canceled at an authorized Mercedes-Benz
Center.XReport the loss immediately to the vehicle insurers.XIf necessary, have the locks changed as well.You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.XIf necessary, have the locks changed as well.The SmartKey cannot
be turned in the ignition
lock.The SmartKey has been in position 0 for a considerable time.XRemove the SmartKey and reinsert it into the ignition lock.XCheck the battery and charge it if necessary ( Y page 236).XStart the engine.The on-board voltage is too low.XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to turn the SmartKey again.
If this does not work:
XCheck the battery and charge it if necessary ( Y page 236).
or
XJump-start the vehicle ( Y page 238).
or
XConsult a qualified specialist workshop.66SmartKeyOpening and closing

Resetting the front seat head restraints
It is necessary to reset the front seat head
restraints after the voltage supply has been
interrupted, e.g. if the battery has been
completely discharged or disconnected.
XMake sure that the cup holder on the center
console is folded down ( Y page 197).XMove the seat as far forward as possible
and the head restraint in as far as possible.
Rear seat head restraints
Important safety notes
GWarning!
For safety reasons, always drive with the rear
head restraints in the upright position when
the rear seats are occupied.
Keep the area around head restraints clear of
articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
GWarning!
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint in such a way that it
is as close to the head as possible and the
center of the head restraint supports the back
of the head at eye level. This will reduce the
potential for injury to the head and neck in the
event of an accident or similar situation.
With a rear seat occupied, make sure to move
the respective head restraint up from the
lowest non-use position and have the
occupant adjust the head restraint properly.
Do not drive the vehicle without the seat head
restraints installed when the rear seats are
occupied. Head restraints are intended to
help reduce injuries during an accident.
GWarning!
Make sure the rear seat head restraints
engage when placing them upright manually.
Otherwise their protective function cannot be
ensured.
The back of the head will not be supported in
the event of a collision. That could cause
serious or even fatal injuries. Rear seat
occupants can be seriously injured or killed.
Adjusting the head restraint heightXTo raise: pull the head restraint up until the
desired height has been reached.XTo lower: push the head restraint down
until the desired height has been reached.
Installing/removing the rear seat head
restraints
XTo remove: pull the head restraint up and
out.XTo re-install: insert the head restraint so
that the arched side points in the direction
of travel.XPush the head restraint down until you hear
it engage in position.
Adjusting the luxury head restraints
GWarning
When folding back the head restraint side
bolsters, do not put your hands between the
side bolster and the cushion holder. There is
a danger of becoming trapped.
80SeatsSeats, steering wheel and mirrors

XTo adjust the side bolsters of the head
restraint: push or pull right and/or left-
hand side bolster : into the desired
position.XTo adjust the angle of the head
restraint: push or pull the head restraint in
the direction of arrow ;.
Adjusting the multicontour seat
You can adjust the contour of the front seats
individually so as to provide optimum support
for your back and sides.
XMake sure that the key is in position 1 in
the ignition lock.:To adjust the thigh cushion;To adjust the backrest contour in the
lumbar region=To adjust the backrest contour in the
upper back region?To adjust the side bolsters of the seat
backrestAdjusting the 4-way lumbar support
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back.:To raise the backrest contour;To soften the backrest contour=To lower the backrest contour?To harden the backrest contour
Switching the seat heating on/off
General notes
The red indicator lamps in the button indicate
the heating level you have selected.
i If the battery voltage is too low, the seat
heating may switch off.
One or more of the indicator lamps in the
seat heating button are flashing.
XMake sure that the SmartKey is in position
2 in the ignition lock.
Front-seat heating
Seats81Seats, steering wheel and mirrorsZ

iThe system automatically switches down
from level 3 to level 2 after approximately
five minutes.
The system automatically switches down
from level 2 to level 1 after approximately
ten minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.XTo switch on: press button : repeatedly
until the desired heating level is set.XTo switch off: press button : repeatedly
until all the indicator lamps go out.
Rear-seat heating
:Level 1 (normal heating);Level 2 (rapid heating)
i
The system automatically switches down
from level 2 (rapid heating) to level 1
(normal heating) after approximately five
minutes.
The system automatically switches off
approximately 30 minutes after it is set to
level 1.
XTo select level 1: press the upper section
of button :.
An indicator lamp lights up.XTo deactivate level 1: press the upper
section of button :.
The indicator lamp goes out.XTo select level 2: press the lower section
of button ;.
Both indicator lamps light up.XTo deactivate level 2: press the lower
section of button ;.
Both indicator lamps go out.
Problems with the seat heating
If one or all of the indicator lamps in the seat
heating button are flashing, the seat heating
has switched off automatically. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
XSwitch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
Once the battery is sufficiently charged, the
seat heating will switch back on
automatically.
Switching the seat ventilation on/off
Switching on/off
Seat ventilation is only available for the front
seats.
The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
i If the battery voltage is too low, the seat
ventilation may switch off.
82SeatsSeats, steering wheel and mirrors

XMake sure that the SmartKey is in position
2 in the ignition lock.XTo switch on: press button : repeatedly
until the desired ventilation level is set.
i If you open the side windows and the
sliding sunroof using the key ( Y page 71),
the driver's seat ventilation automatically
switches to the highest level.
XTo switch off: press button : repeatedly
until all the indicator lamps go out.
Problems with the seat ventilation
If one or all of the indicator lamps in the seat
ventilation button are flashing, the seat
ventilation has switched off automatically.
The vehicle's electrical system voltage is too
low because too many electrical consumers
are switched on.
XSwitch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
Once the battery is sufficiently charged, the
seat ventilation will switch back on
automatically.
Steering wheel
Important safety notes
You can adjust the steering wheel electrically.
GWarning!
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving
could cause the driver to lose control of the
vehicle.
The electrical steering wheel adjustment
feature can be operated at any time.
Therefore, do not leave children unattended
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.
When you adjust the steering wheel, make
sure that:
R the steering wheel can be reached with
your arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the
instrument cluster clearly.
Adjusting the steering wheel
:To adjust the steering wheel position
(fore-and-aft adjustment);To adjust the steering wheel heightXMake sure that the SmartKey is in position
1 or 2 in the ignition lock.
i
If the driver's door is open, the steering
wheel can be adjusted for up to 30 minutes
after the ignition has been switched off.
XPress the lever in the direction of
arrow : or ; until the steering wheel is
in the desired position.
You can find more information under:
R EASY-ENTRY/EXIT feature ( Y page 84)
R Storing settings ( Y page 88)
Steering wheel heating
Switching on/off
The steering-wheel heating heats the leather
areas of the steering wheel.
Steering wheel83Seats, steering wheel and mirrorsZ

:To switch on the steering-wheel heating;Indicator lamp=To switch off the steering-wheel heatingXTo switch on/off: make sure that the key
is in position 1 or 2 in the ignition lock.XTurn the lever in the direction of arrow :
or = .
Indicator lamp ; lights up or goes out.
i
The steering wheel heating does not
switch off automatically.
i The steering wheel heating may switch off
temporarily if:
R the temperature of the vehicle interior is
above 86 ‡ (30 †).
R the temperature of the steering wheel is
above 95 ‡ (35 †).
Indicator lamp ; remains on.
i The steering wheel heating is deactivated
if you remove the SmartKey from the
ignition lock.
Problems with the steering wheel
heating
If steering wheel heating indicator lamp ; is
flashing, the steering wheel heating has
switched off automatically. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
XSwitch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
Once the battery is sufficiently charged, the
steering wheel heating will switch back on
automatically.
Steering wheel EASY-ENTRY/EXIT
feature
General notes
The EASY-ENTRY/EXIT feature makes getting
in and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature in the on-board
computer ( Y page 165).
Important safety notes
GWarning
You must make sure no one can become
trapped or injured by the moving steering
wheel when the EASY-ENTRY/EXIT feature is
activated.
To stop steering maneuver do one of the
following:
R press the steering column adjustment
switch.
R press one of the memory function position
buttons.
R press the memory button.
Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could open the driver's door and
unintentionally activate the EASY-ENTRY/
84Steering wheelSeats, steering wheel and mirrors

Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
relevant systems and functions.
Exterior lighting
Important safety notes
For reasons of safety, Mercedes-Benz
recommends that you drive with the lights
switched on even during the daytime. In some
countries, operation of the headlamps varies
due to legal requirements and self-imposed
obligations. In these countries, the daytime
running lamps are automatically switched on
when the engine is started.
Information about driving abroad
Converting to symmetrical low beam
when driving abroad: switch the headlamps
to symmetrical low beam in countries in
which traffic drives on the opposite side of the
road to the country where the vehicle is
registered. This prevents glare to oncoming
traffic. Symmetrical lights do not illuminate
as large an area of the edge of the road.
Have the headlamps converted at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center, as close to the border
as possible before driving in these countries.
Converting to asymmetrical low beam
after returning: have the headlamps
converted back to asymmetrical low beam at
a qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center, as soon as
possible after crossing the border when
returning.
Light switch
Operation1 WLeft-hand standing lamps2XRight-hand standing lamps3$Lights off/daytime running lamps4ÃAutomatic headlamp mode/daytime
running lamps5 TStanding lamps, perimeter lamps,
license plate illumination and
instrument cluster illumination6 LLow-beam/high-beam headlamps7NFront fog lamps8RRear fog lamp
The turn signals, high-beam headlamps and
the high-beam flasher are operated using the
combination switch ( Y page 93).
! Switch off the standing lamps, parking
lamps and low-beam headlamps when you
leave the vehicle. This prevents the battery
from discharging.
The exterior lighting (except the parking
lamps) switches off automatically if you:
R remove the SmartKey from the ignition lock
R open the driver's door with the SmartKey
in position 0
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
The Switch Off Lights message appears
in the multifunction display.
XTurn the light switch to $ or à .90Exterior lightingLights and windshield wipers