warning MERCEDES-BENZ GL SUV 2012 Repair Manual

i
Further related subjects:
R Luggage compartment enlargement
(folding the 2nd row of se atsf orwards)
(Y page 341)
R Folding the seats in the 3r drow for-
wards/back (Y page 105)
Folding down th eseats
The seats can be folded dow nelectrically if
the vehicle is stationary and the respec tive
rea rdoor is open. X
Press button :.
The head restraint retracts, the backrest
folds forwards and the seat folds forwards.
The seat can be manually returne dtoits
initial position (Y page 106). Adjusting th
emulticon tour seat
Yo uc an set the multicontour seat using
COMAND Online. See the separat eCOMAND
Onli neOperating Instructions. Adjusting th
e4-way lumbar support :
To rais ethe bac krest contour
; To soften the backrest contour
= To lower the backrest contour
? To harden the backrest contour
You can adjust the contour of the fr ontseat
bac krest sindividually to provide optimum
support for your back. Switching th
eseat heating on/off
Switching on/off G
WARNING
Repeatedly settin gthe seat heating to level
3 ma yresult in excessiv eseat temperatures.
The health of passengers that have limited
temperatur esensitivit yoralimited ability to
react to excessively high temperatures may
be affected or they may even suffer burn-like
injuries. Therefore, do not use seat heating
level 3repeatedly. 108
SeatsSeats, steering wheel and mirrors

Problems wit
hthe seat ventilation Th
es eat ven tilation has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumer sare switched
on.
X Switch off electrica lconsumers that you do
not need, such as the rea rwindow heating
or interior lighting. Steering wheel
Important safet
ynotes G
WARNING
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving, or
drivin gwithout the steering wheel adjustment
featur elocked coul dcause the driver to lose
control of the vehicle.
The electrical steering wheel adjustment fea-
ture can be operated at any time. Therefore,
do not leave children unattended in the vehi-
cle, or with access to an unlocked vehicle. A
child's unsupervised access to avehicle could
result in an accident and/or serious personal
injury. Adjusting the steering whee
lman-
ually :
Release lever
; To adjus tthe steering wheel height
= To adjust the steering wheel position
(fore-and-af tadjustment)
X Push release lever :down completely.
The steerin gcolum nisu nlocked.
X Adjus tthe steering wheel to the desired
position.
X Push release lever :up completely.
The steering column is locked.
X Chec kifthe steering column is locked.
When doing so, tr ytopush the steering
wheel up or down or try to move it in the
fore-and-aft direction. Adjusting the steering wheel electri-
cally :
To adjust the steering wheel height
; To adjust the steering wheel position
(fore-and-aft adjustment) 110
Steering wheelSeats, steerin
gwhee land mirrors

i
Further related subjects:
R EASY-ENT RY/EXIT feature
(Y page 111)
R storing setting s(Ypag e115) Ste
ering wheel heating
Switchin gon/off X
Make sure that the key is in position 2in
the ignition lock.
X To switch on/off: turn the lever in the
direction of arrow :or;.
Indicator lamp =lights up or goe sout.
Vehicles without KEYLESS-GO: when you
remove the key from the ignition lock, the
steering wheel heating is switched off.
Vehicles with KEYLESS-GO: when you switch
off the ignition and open the driver' sdoor, the
steerin gwheel heating is switched off.
Problems wit hthe steering whee lheat-
ing The steerin
gwheel heating has switched
itsel foff prematurely or cannot be switched
on. Th evehicle' selectrical system voltage is
too low because too many electrical consum-
ers are switched on.
X Switc hoff elect rical consumers that you do
not need, such as the rear window heating
or inte rior lighting. EASY-ENTRY/EXIT feature
Important safety notes G
WARNING
Make sur ethat nobody can becom etrapped
when you activate th eEASY-ENTRY/EXI Tfea-
ture.
If there is arisk of someon ebecomin gtrap-
ped, stop th eadjustment procedure. To halt
the procedure:
R press the steerin gcolum nadjustment but-
ton.
R briefly press one of the memory fun ction
position buttons.
The steerin gcolum nstops moving immedi-
ately.
Do not keep the memory function position
button pressed down, otherwise the memory
function will start and the steerin gwheel and
seat will begin to move.
Never leav echildren unsupervised in the vehi-
cle. They coul dopen the driver' sdoor and
thereby unin tentionally activate the EASY-
ENTRY feature and become trapped.
The EASY-ENTRY/EX ITfeature make sgetting
in and out of your vehicle easier.
You can activa teand deactivat ethe EASY-
ENTRY/ EXIT feature in th eon-board com-
puter (Y page285).
Positio nofthe steering whee lwhen the
EASY-ENTRY/EXIT feature is active Th
es teering whee ltilts upwards if you:
R remov ethe key from the ignition lock
R open the driver's door and KEYL ESS-GO is
in position 1
R ope nthe driver's door and the key is in
position 0or 1in the ignition lock
i The steerin gwheel only moves upwards if
it has not already reached the upper end
stop. Steering wheel
111Seats, steering whee land mirrors Z

Position of th
esteerin gwheel for driv-
ing Th
es teering whee lismoved to the previously
set position if:
R the driver's door is closed and
R you inser tthe key int othe ignition lock
or
R you press the Star t/Stop butto nonce on
vehicles with KEYLESS-GO.
If you clos ethe driver's door with the key
inserted int othe ignition lock ,the steering
wheel is automatically moved to the previ-
ously set position.
The last position of the steering wheel is
stored when you switc hoff th eignition or
when you stor ethe setti ngwith the memory
function (Y page 115).
Crash-responsive EASY-EXIT fea tureIf th
ecrash-resp onsive EASY-EXIT feature is
trig gere dinana ccident,the steeri ngcolu mn
will mov eupwards when the driv er'sdoor is
opened. This occurs irrespective of the posi-
tion of the key in the ignition lock .This makes
it easier to exit the vehicle and rescue the
occupants.
The crash-responsive EASY-EXIT featur eis
only operational if the EASY-EXIT/ENTRY fea-
tur eisa ctivate dinthe on-boar dcomputer
(Y page 285). Mirrors
Rear-view mirror
X
Anti-dazzle mode: flick anti-dazzle
switch :forwards or back. Exterior mirrors
Adjusting th eexterior mir rors G
WARNING
The exterior mirrors reduce the size of the
image. Objects are actually close rthan they
appear. You coul dmisjudge the distance from
vehicles drivin gbehind and cause an acci-
dent, e.g. when changing lane. For this rea-
son, mak esure of the actual distance from the
vehicle driving behind by glancing over your
shoulder. 112
MirrorsSeats, steerin
gwhee land mirrors

X
Make sur ethat the key is in position 2in
the ignition lock.
X With the exterior mirror on the front-
passenger side activated, use adjustment
button =to adjust the exterior mirror. In
the exterior mirror, the rea rwheel and the
ker bshould be visible.
X Press memory button M? and one of the
arrow sona djustment button =within
three seconds.
The parking position is stored if the exterior
mirror does not move.
X If the mirror moves out of position, repeat
the steps.
Calling up astore dparkin gposition set-
ting :
Button for the driver's sid eexterio rmirror
; Button for the passenger side exterior
mirror
= Adjustment button
? Memo rybutton M
X Turn the key to position 2in the ignition
lock.
X Adjust the exterior mir roront he front-
pa ssenger side usin gbutton ;.
X Engage reverse gear.
The exterior mirror on the front-passenger
side moves to the stored parking posi tion. The exterior mir
roront he front-passenger
side moves bac ktoits original position:
R as soo nasyou exceed aspeed of
15 km/h
R if you press button :for the exterior mir-
ror on the driv er'sside Me
mo ry function Storing settings
G
WARNING
Only use the memory function on the driver's
side when the vehicle is stationary. You could
otherwise be distracted fro mthe traffic con-
diti ons by th esteerin gwheel and seat moving
of their own accord, and as aresult ,cause an
accident. G
WARNING
The memory function can still be used when
the key has been removed. For this reason,
children shoul dnever be left unsupervised in
the vehicle. They could otherwise become
trapped when adjusting the seat or the steer-
ing wheel.
With the mem ory function,you can store up
to three differen tsettings, e.g. for three dif-
ferent people.
The followi ngsettings ar estore dasa single
mem orypreset:
R position of the seat ,backrest and head
restraint
R driver's side: steerin gwheel position
R driver' sside: position of the exterior mir-
ror so nthe driver' sand front-passenger
sides Memory function
115Seats, steering wheel and mirrors Z

Light switch
Operation
1W
Left-handparking lamps
2X Right-hand parking lamps
3T Side lamps, licenc eplatea nd instru-
men tcluster lighting
4Ã Automatic headlamp mode, control-
led by the light sensor
5L Dipped-beam/main-beam head-
lamps
BR Rear foglamp
If you hear awarnin gton ew hen you leav ethe
vehi cle, the light smay still be switched on.
X Turn the light switc htoÃ.
The exterior lighting (except the side lamps/
par king lamps )switches off automatically if
you:
R remove the key fro mthe igni tion lock
R open the driv er'sdoor with the key in posi-
tion 0
Automatic hea dlamp mode G
WARNING
If the light switch is se ttoÃand it is foggy,
snowing or ther eispoor visibility, the dipped-
beam headlamps will not com eonautomati-
cally. This could endanger you and others. In
such situations tur nthe light switc htoL .
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lightin gatall times. 1W
Left-hand parking lamps
2X Right-hand parking lamps
3T Side lamps, licence plate and instru-
ment cluster lighting
4Ã Automatic headlamp mode, control-
led by the light sensor
5L Dipped-beam/main-beam head-
lamps
BR Rear foglamp
à is the preferred light switch setting. The
light setting is automatically selected accord-
ing to the brightness of the ambient light
(exception: poor visibility due to weather con-
ditions such as fog, snow or spray):
R Key in position 1in the ignition lock: the
side lamps are switched on or off automat-
ically depending on the brightness of the
ambient light.
R With the engine running: if you have acti-
vated the daytime driving lights function via
the on-board computer, the daytime driving
lights or the dipped-bea mheadlamps and
side lamps are switched on or off automat-
icall ydepending on the brightness of the
ambient light.
X To switc honautomatic headl amp
mode: turn the ligh tswitch to Ã.
The daytime driving lights improve the visibil-
ity of your vehicle during the day. Here, the
daytime driving lights function must be
switched on via the on-board computer
(Y page 280).
When the dipped-beam headlamps are
switched on, the green Lindicator lamp Exterio
rlighting
119Lights and windscreen wipers Z

in the instrumen
tcluster lights up and the
daytime drivin glights go out or are dimmed.
Dipped-beam hea dlamps G
WARNING
If the light switch is se ttoÃand it is foggy,
snowing or ther eispoor visibility, the dipped-
beam headlamps will not com eonautomati-
cally. This could endanger you and others. In
such situations tur nthe light switc htoL .
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lightin gatall times. 1W
Left-hand parking lamps
2X Right-hand parking lamps
3T Side lamps, licence plate and instru-
ment cluster lighting
4Ã Automatic headlamp mode, control-
led by the light sensor
5L Dipped-beam/main-beam head-
lamps
BR Rear foglamp
Even if the light senso rdoes not detec tthat
is dark, the side lamps and dipped-beam
headlamps switc honwhen the key is inserted
int ot he ignition lock and the light switc his
set to the Lposition. This is aparticularly
useful function in the event of rain and fog.
X To switch on the dipped-beam head-
lamps: turn the key in the ignition lock to
position 2or start the engine.
X Turn the light switch to L.
The green Lindicator lamp in the instru-
ment cluster lights up. Rear foglamp
1W
Left-hand parking lamps
2X Right-hand parking lamps
3T Side lamps, licence plate and instru-
ment cluster lighting
4Ã Automatic headlamp mode, control-
led by the light sensor
5L Dipped-beam/main-beam head-
lamps
BR Rear foglamp
The rear foglamp improves visibility of your
vehicle for the traffic behind in the event of
heavy fog. Pleas etake note of the country-
specific regulations for the use of rear fog-
lamps.
X To switch on the rear foglamp: turn the
key in the ignition lock to position 2or start
the engine.
X Turn the light switch to LorÃ.
X Press the Rbutton.
The yellow Rindicator lamp in the
instrumen tcluster lights up.
X To switch off th erear foglamp: press the
R button.
The yellow Rindicator lamp in the
inst rument cluster goes out.
Side lamps
! If the bat tery ha sbeen excessively dis-
charged, the side lamps or parking lamps
are automatically switched off to enable
the nex tengine start. Alway sparky our
vehicl esafely and sufficiently li taccording
to lega lstandards. Avoi dthe contin uous 120
Exterio
rlightingLight sand windscreen wipers

Main-beam headlamps
:
Main-beam headlamps
; Turn signal, right
= Headlam pflasher
? Turn signal, left
X To switch on the main-beam head-
lamps: turn the key in the ignitio nlock to
position 2or star tthe engine.
X Tur nthe light switch to LorÃ.
X Press the combination switch beyond the
pressure point in the direction of
arrow :.
In the Ãposition, the main-beam head-
lamps ar eonly switched on whe nitisdark
and the engine is running.
The blue Kindicator lamp in the instru-
ment cluster lights up when the main-beam
headlamps are switched on.
X To switch off the main-beam head-
lamps: move the combinatio nswitch back
to its normal position.
The blue Kindicator lamp in the instru-
ment cluster goes out.
i Vehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active,
it controls activation of the main-beam
headlamps (Y page124). Headlamp flasher :
Main-beam headlamps
; Turn signal, right
= Headlam pflasher
? Turn signal, left
X To switch on: turn the key in the ignition
lock to position 1or 2,ors tart the engine.
X Pul lthe combination switch in the direction
of arrow =. Hazard warning lamps
X
To switch on th ehazard warnin glamps:
press button :.
All turn signals flash .Ifyou now switch on
at urn signa lusing the combination switch,
only the tur nsigna llam pont he corre-
sponding side of the vehicle will flash.
X To switch of fthe hazard warn ing
lamps: press button :.122
Exterior lightingLights and windscreen wipers

The hazar
dwarning lamps automatically
switch on if:
R an airbag is deployed.
R the vehicle decelerates rapidly from a
spee dofm ore than 70 km /hand come sto
as tandstill.
The hazard warning lamps switch off auto-
maticall yifthe vehicle reaches aspeed of
over 10 km/ hagain after afull brake appli-
cation.
i The hazard warning lamps still operate if
the ignition is switched off. Headlamp cleanin
gsystem
Th eh eadlamps are cleane dautomaticall yif
the "Wip ewithw ashe rfluid" function is oper-
ated fiv etimes (Y page 131 )while the lights
ar eona nd the engine is running. Whe nyou
switc hoff th eignition, the automatic head-
lam pcleaning system is reset and countin gis
resumed from 0. Intelligent Light Sys
tem
General notes Th
eI ntelligent Light System is asystem that
adjusts the headlamps automatically to suit
the prevailing drivin gand weather conditions.
It offers advanced functions for improved illu-
mination of the road surface, e.g. depending
on the vehicle speed or weather conditions.
The system includes the active light function,
cornering light function, motorway mode and
extended range foglamps. The system is only
active when it is dark.
You can activate or deactivate the "Intelligent
Light System" using the on-board computer
(Y page 281). Active light function
The active light function is
asystem that
moves the headlamps according to the steer-
ing movements of the front wheels. In this
way, relevant areas remain illuminated while
driving. This allows you to recognise pedes-
trians, cyclists and animals.
Active: when the lights are switched on.
Cornering light function The cornering ligh
tfunction improves the illu-
mination of the road over awide angle in the
direction you are turning, enabling better vis-
ibility in tight bends, for example. It can only
be activated when the dipped-beam head-
lamps are switched on.
Active:
R if you are drivin gatspeeds below
40 km/ hand the turn si gnal is activatedor
the steerin gwheel is turned.
R if you ar edriving at speeds between
40 km/h and 70 km/h and tur nthe steer-
ing wheel. Exterior lighting
123Lightsand windscreen wipers Z

Not acti
ve:if yo uare dr iving at speeds above
40 km/ horswitch off the turn signa lorturn
the steering whee ltothe str aight-ahead posi-
tion.
Th ec orn erin glam pm ayremai nlit for ashort
time, but is automati cally switched off after
no mor ethan three mi nutes.
Motorway mode Motorway mode increases the rang
eofthe
beam.
Active: if you ar edriving atas peed above
11 0k m/ hand do not make any large steering
movements for at leas t1000 morify ou are
driving at aspeed abov e130 km/h.
Not active: if you are driving at speeds below
80 km/ hfollowin gactivation.
Extende drange fogla mps The extended range foglamps reduce the
glar
eexperie nced by the driver and improve
the illumination of the edge of the carriage-
way. Active:
if you are drivin gatspeeds below
70 km/ hand yo uswitc honthe rear foglamp
No tactive: if, following activation, you are
driving at speeds above 10 0km/ horify ou
switch off th erear foglamp.
Off-road lights The off-road light
sfacilitat ethe earl yrecog-
nition of objects/obstacles when driving off-
road thank stoasymmetrical, wider and
brighter distribution of ligh tfrom the dipped-
beam headlamps.
Active: whendriving at speeds no faster than
50 km/h and th eoff-road progra mselector
wheel is in position 1or2.
Not acti ve:when driving at speeds above
50 km/h.
When the off-roa dlights are switched on, the
cornering light function is permanent lyacti-
vated ,the act ivel ight function is deactivated
and the headlamp range control is set to
static mode. Adaptive Highbeam Assi
st
Important safety notes G
WARNING
Adaptive Highbeam Assist is only an aid
designed to assist driving. The driver is
responsible for adjusting the vehicle's lighting
to the prevailing light, vision and traffic con-
ditions.
The system may be impaired or deactivated:
R if there is poor visibility, e.g. due to snow,
rain, fog or spray
R if the area of the windscreen around the
optical sensor is dirty, misted up or covered
up, e.g. by asticker 124
Exterior lightingLights and windscree
nwipers