2012 MERCEDES-BENZ GL SUV cooling

Switching th
eZONE functio non/off X
To switc hon:press the ábutton.
The indicator lam pabove the ábutton
lights up.
THERMATIC automatic climate control: the
temperatur esettin gfor the driver's side is
not adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperatur esettin gfor the driver's
side is not adopted for the front-passenger
side and the rea rcompartment.
X To switch off: press theábutton.
The indicator lam pabove the ábutton
goes out.
THERMATIC automatic climate control: the
temperatur esettin gfor the driver's side is
adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperatur esettin gfor the driver's
side is adopted for the front-passenger side
and the rea rcompartment. Demisting th
ewindscreen
You can use this function to demist the wind-
screen or to demist the inside of the wind-
screen and the side windows.
Switc hoff th e"demisting" function as soon
as the windscreen is clear again.
X Turn the key to position 2in the ignition
lock.
X To activate: press the¬button.
The indicator lamp in the ¬button lights
up. The climate control system switches to the
followin
gfunctions:
R high airflow
R high temperature
R air distributio ntothe windscreen and
front side windows
R air-recirculation mode off
X To deactivate: press the¬button.
The indicator lam pint he ¬ button goes
out. The previous setti ngsa re reactivated.
Air- recirculation mode remains deactiva-
ted.
or
X Pres sthe à button.
The indicator lam pint he ¬ button goes
out. Airflo wand air distributio nare se tto
automatic mode.
or
X Turn controls :orB clockwise or anti-
clockwise (Y page 137)(THERMATI Cauto-
matic climate control), (Y page 139)
(THERMOTRONIC automatic climate con-
trol ).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the ¿/Á cooling with air
dehumidification function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the demisting function (Y page 145).
i You should only select this setting until
the windscreen is clear again. Operating the climate contro
lsystem
145Clim atec ontrol Z

Displa
ymessages Possible causes/consequences and
M Solutions
If th
eauxiliar yheating is faulty:
X Hav ethe auxil iaryh eatin gchecked at aqualified specialist
workshop. Adjusting th
eair vents Important safet
ynotes G
WARNING
Ver yhot or ver ycold ai rcan flo wfromt he air
vents. This coul dcause burns or frostbite to
bare skin in the immediate vicinity of the
vents. Keep bare skin away from these air
outlets. If necessary, direct the airflow away
to ad ifferent area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vent sinto the vehicl einterior,
please observe the following notes:
R keep the air inlet grill eonthe bonnet and
in the engin ecompartmen tonthe front-
passenger side free of blockages, such as
ice, snow or leaves.
R never cover the ven tsor ven tilation grilles
in the vehicle interior.
i For virtually draught-free ventilation,
adjust the sliders of the air vent stothe
cen treposition. Setting the centre air vents
:
Centre air vent, left
; Centre air vent, right =
Centre ven tthumbwheel, right
? Centre ven tthumbwheel, left
X To open/close: turnthumbwheels =
and ?to the right or left. Setting th
eside air vents X
To open/close: turnthumbwheel =up or
down.
i Side window demister vent :is never
completely shut, even if side air vent ;is
shut. Setting th
eglove compartment air
vent
! Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu-
midification" function. Otherwise, temper-
ature-sensitiv eitems stored in the glove
compartmen tcould be damaged. 154
Adjusting th
eair ventsClimat econtrol

Engine
Display messages Possible causes/consequences and
M Solutions
+
Top
up co
olant See
Owner'
sManual Th
ec oolant leve listoo low.
! Avoi dmaking long jour neys with too little coolant in the engine
cooling system. The engin ewill otherwise be damaged.
X Top up th ecoolant ,obser ving the warning note sbefore doing
so (Y page 363).
X If th ecoolant needs toppin gupmoreo ften than usual ,have the
engin ecoolant system checked at aqualified specialist work-
shop. ? The fan motor is faulty.
X
If the coolant temperatur eisbelow 12 0†,you can continue
dri ving to the nearest qualified spe cialist workshop.
X Avoid heav yloads on th eengineasy ou do so, e.g. driving in
mou ntainous terrain and stop-start traffic. ?
Co
olantS topv ehi‐ cle Switch engine
off Th
ec oolant is too hot.
Aw arning ton ealso sounds.
G WARNING
Never driv ewithano verheated engine. Drivi ngwhen your engine
is overheate dcan cause fluids that may have leaked int othe
engin ecompartment to catch fire.
Stea mfromano verheated engine can cause serious burns, which
can occ urjus tbyo pening the bonnet.
There is ariskofi njury.
X Stop the vehicl eimmediately, paying att entio ntor oad and traf-
fic conditions, and switc hoff th eengine.
X Secure the vehicl eagainst rolling away (Y page 181).
X Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 120 †. The engine may
otherwise be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit aqualified specialist
worksho pimmediately.
Unde rnormal operatin gconditions and with the specified coolant
level, the coolant tempera ture mayrise to 120 †. 304
Display messagesOn-board computer and displays

Problem Possible causes/consequences and
M Solutions
?
The red coolant warn-
ing lam
pcomes on
while the engin eisrun-
ning. The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator
may be blocked or the electric engine radiator fan may be mal-
functioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Secure the vehicle against rolling away (Y page 181).
X Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and top up the coolant, observing the
warning notes (Y page 363).
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X Do not start the engine again until the coolant temperature is
under 120 †. The engine may otherwise be damaged.
X Drive to the nearest qualified specialis tworkshop.
X Avoid heav yloads on the engin easyou do so, e.g. driving in
mountainous terrain and stop-star ttraffic. ?
Th
er ed coolan twarn-
ing lamp comes on
while the engine is run-
ning. Awarning tone
also sounds. The coolant temperature has exceeded 120 †. The airflow to the
engine radiator may be blocked or the coolant level may be too
low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartmen tto
catch fire.
Stea mfrom th eoverh eated engine can als ocaus eserious burns
which can occu rjust by opening the bonnet.
This pose sarisk of injury.
X Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Secur ethe vehicle against rolling away (Y page 181).334
Warning and indicator lamps in th
einstru ment clusterOn-board computer and displays

Problem Possible causes/consequences and
M Solutions
X
Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and top up the coolant, observing the
warning notes (Y page 363).
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialis tworkshop.
X Avoid heav yloads on the engin easyou do so, e.g. driving in
mountainous terrain and stop-star ttraffic. Driving systems
Problem Possible causes/consequences and
M Solutions
·
Th
er ed distance warn-
ing function warning
lam pcomes on while
the vehicle is moving. The distance to the vehicle in front is too smal
lfor the speed
selected.
X Increase the distance. ·
The red distance warn-
ing func
tion warning
lam pcomes on while
the vehicle is moving. A
warnin gtone also
sounds. You ar
eapproaching avehicle or astationary obstacle in your line
of travel at too hig haspeed.
X Be prepared to brak eimmediately.
X Pa yc areful attention to the traffic situation. You may have to
brake or take evasive action.
Further information on DISTRONIC PLUS (Y page 198).
Further information on PRE-SAFE ®
Brake (Y page 68).
Further information on the distance warning function
(Y page 63). Warnin
gand indicator lam psin th einstru ment cluster
335On-board computer and displays Z

You can remove the rubber mat of the cup
holder to clean it. Clean it with clean
,luke-
warm water only.
Temperature-controlled cup holder in
th ef ront-compartment centr econsole G
WARNING
When you use the warmin gfunction ,the metal
insert of thecup holder is heated. Therefore,
do not touch the cup holder inser t.Otherwise,
you migh tburny oursel f. :
Cuph olders
; Residual heat indicator lamp
= Button
Th et emperature-c ontrolle dcup holde rcan
be used to keep cold drinks cold and hot
drinks hot.
X Turn the key to position 2in the ignition
lock.
X To switch on th ecooling function: press
and hold button =until th eblue indicator
lamp on th ebutton lights up.
X To switch on th eheating function: press
and hold button =until the red indicator
lamp on the button lights up.
X To switch off th efunc tion: press and hold
button =until the indicator lamp on the
button goes out.
When the heatin gfunction is used, residual
heat indicator lamp ;lights up fro macer-
tain temperature. This mean sthat the metal
insert of the cup holder is hot. Cu
ph older in th erears eat armrest !
Do not sit on or support your body weight
on the rear seat arm rest when it is folded
down ,asy ou coul dotherwise damage it. X
Fold down the rear seat armrest.
Cup holder :is located in the rear seat
armrest.
Cup holder in th ethird row of seats :
Cup holders
The cup holders are located on the right-hand
and left-han dside panels. Sun visors
Overview G
WAR
NING
Keep the vanity mirrors in the sun visors cov-
ered whil edriving.Y ou coul dotherwise be
dazzled, which may impair your view of traffic
conditions and as aresult could cause an
accident. Features
347Stowing and features Z

!
Alway suseasuitabl ecoolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the engin ecooling system is not
sufficiently protected from corrosion and
overheating.
! The engin ecooling system is filled with
coolant, which must be renewed after
15 years or after 250,000 kilometres at the
latest.
The coolant is amixtur eofw ater and anti-
freeze/corrosio ninhibitor. It performs the
following tasks:
R anti-corrosio nprotection
R antifreeze protection
R raising th eboiling point
If antifreeze/ corrosion inhibitor is presen tin
the correct concentration, the boil ingp oint of
the coolant during operation will be approx-
imately 13 0†.
The antifreeze/ corrosion inhibitor concentra-
tion in the engin ecooling system should:
R be at least 50%. This will protect the engine
coolin gsystem against freezing down to
approximatel y-37 †.
R not exceed 55% (antifreeze protection
down to -45 †). Hea twill otherwise not be
dissipated as effectively.
If the vehicle has lost coolant, top it up with
equa lamounts of water and antifreeze/cor-
rosio ninhibitor. Mercedes-Benz recom-
mends an antifreeze/corrosion inhibito rcon-
cen trate in accordance with MB Specifica-
tions for Service Products 310.1.
The coolant is checked at every maintenance
interval at aqualified special istworkshop.
i When the vehicle is first delivered ,itisfil-
led with acoolant mixtur ethat ensures
adequate antifreeze and corrosion protec-
tion. Windscreen washe
rsystem an dhead-
lamp cleaning system
Important safety notes G
WARNING
Windscreen washer concentrat eishighly
flammable. If it comes into contact with hot
engine component sorthe exhaust system it
coul dignite. There is arisk of fire and injury.
Make sure that no windscreen washer con-
centrate is spille dnext to the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit. Unsuitable washer fluid
could damage the plastic lenses of the
headlamps.
! Do not use distilled or de-ionised water in
the washer fluid reservoir. Otherwise, the
level sensor may be damaged.
! Only the washer fluids SummerFit and
WinterFit can be mixed. Otherwise, the
spraying nozzles could become blocked.
At temperatures above freezing:
X Fill the washer fluid reservoir with amixture
of water and washer fluid, e.g. MB Sum-
merFit.
Mix 1part MB SummerFit to 100 parts water.
At temperatures below freezing:
X Fill the washe rfluid reservoir with amixture
of water and washer fluid, e.g. MB Winter-
Fit.
Adapt the mixin gratio to the outside temper-
ature.
R Down to Ò10 †: mix 1part MB WinterFit to
2p arts water.
R Down to Ò20 †: mix 1part MB WinterFit to
1p art water.
R Down to Ò29 †: mix 2parts MB WinterFit
to 1p art water.
i Add washe rfluid concentrate, e.g. MB
SummerFit or MB WinterFit, to the washer
fluid all year round. 430
Service products and capacitiesTechnical data

All models (except AMG
vehicles)
Unladen weight
Maximum roof load
10
0kg GL 63 AMG
Vehi
clel ength 514
6mm Vehicle width including
exterio rmirrors 2141 mm
Vehicle width excluding
exterior mirrors
1982 mm
Maximum vehicle height
1903 mm
Minimum vehicle height
1850 mm
Wheelbase
3075 mm
Maximum ground clear-
ance
24
9mm Min
imum ground clear-
ance 198 mm
Un
laden weight 2580 kg
Maximum roof load
100 kg
Traile
rtow hitch Mounting dimensions
! If you have atrailer to whitch retrofitted,
changes to the cooling system and drive
train may be necessary, depending on the
vehicle type.
If you have atrailer to whitch retrofitted,
observ ethe anchorage point sonthe chas-
sis frame. Example: anchorage point
sfor the trailer tow hitch
: Anchorage points
; Overhang dimension
= Rear axle centre line
For traile rtow hitches fit tedatt he factory, the
overhang dimension includin gprotective cov-
ering is 1,272mm. 432
Trailer tow hitchTechnical data