2012 MERCEDES-BENZ GL SUV brake

Problem Possible causes/consequences and
M Solutions
֌
The yellow ESP
®
and
ESP ®
OFF warning
lamps ar elit while the
engine is running. ESP
®
,B AS, PRE-SAFE ®
,t he HOL Dfunction, hill start assist, cross-
wind driving assistance and ESP ®
trailer stabilisatio nare tempo-
raril ynot available.
The adaptive brake lights, COLLISION PREVENTION ASSIST, BAS
PLU Sand PRE-SAFE ®
Brake may als ohave failed.
ATTENTION ASSIST is deactivated.
Self-diagnosis is not yet complete.
G WARNING
The brake system continues to function normally, but withou tthe
func tions listed above.
The brakin gdistance in an emergenc ybraking situatio ncan thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilis ethe vehicle.
The danger of skidding and having an accident increases.
X Carefully drive on asuitable stretc hofroad, makin gslight steer-
ing movement sataspeed above 20 km/h.
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit aqualified specialist workshop. Warnin
gand indicator lam psin th einstru ment cluster
331On-board computer and displays Z

Problem Possible causes/consequences and
M Solutions
!
The red indicator lamp
for the electric parking
brake flashes or lights
up and/or the yellow
warnin glamp for the
electric parking brake
lights up. X
Observe the additional display message sint he multifunc tion
display. 6
The red SRS warning
lam
pisl it while the
engine is running. There is
amalfunction in the SRS (Supplemental Restraint Sys-
tem).
G WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This pose sanincrease drisk of injury.
X Driv eonc arefully.
X Have SRS checked at aqualified specialist worksho pimmedi-
ately.
For further information abou tthe Supplemental Restrain tSystem,
see (Y page 41). 332
Warnin
gand indicator lam psin 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

Driving abroad
An extensiv
eMercedes- BenzService network
is als oavailable in othe rcoun tries. The
Service Hotline's curren ttelephone numbers
for use when you are abroa dare to be found
in th e"Mercedes-Ben zService2 4h"s ection
of the Ser vice Boo klet. AdBlue
®
service display
i For BlueTE Cvehicles only.
To fun ction properly, BlueTEC exhaust gas
after treatmen tmust be operated with the
reducing agent AdBlue ®
.A dBlue ®
is topped
up as part of the service. Under normal oper-
atin gconditions, afull tank of AdBlue ®
should
last until the nex tservice due date.
Depending on how and where the vehicle is
used, ther emay be an increase in the
AdBlue ®
consumption, resulting in the next
servic edue date being brought forward.
Certain display messages sho wthat
AdBlue ®
must be topped up, e.g.
Refill AdBlue Se eOwner's Manual Refill AdBlue No start in: .. km
Aw
arning ton ealso sounds.
You can no longer start th eenginew hen the
AdBlue ®
supply has been used up
(Y page 306).
Top up AdBlue ®
(Y page 178).
Before taking atripw ithy our vehicle outside
Europe, have th eAdBlue ®
suppl ychec kedat
aq ualified specialist workshop. If necessary,
have AdBlue ®
topped up. Before alonger stay
outside of Europe, consult aqualified special-
ist workshop.
Obser vethe note sonA dBlue ®
(Y page 427).
You can obtain further informatio nabout
BlueTE Cexhaus tgas aftertreatment and
AdBlue ®
from any Mercedes-Benz Service
Centre. Care
General notes
H
Environmental note
Dispos eofempty packaging and cleaning
cloths in an envi ronmentally responsible man-
ner.
! For cleani ngyour vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containin gsolvents
Do not scrub.
Do not touc hthe surfaces or protective
films with har dobjects, e.g. aring or ice
scraper .You coul dotherwis escratc hor
damage the surfaces and protectiv efilm.
! Do not park up the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner .Wheel cleaner scould cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for afew minutes after clean-
ing. Brakin gheats the brak ediscs and the
brake pads/linings, thus drying them. The
vehicle can then be parked up.
Regula rcare of your vehicle is aconditio nfor
retaining th equalit yint he long term.
Us ec arep roducts and cleani ngagent srec-
ommended and approved by Mercedes-Benz. Washin
gthe veh iclea nd cleaning the
paintwork
Automatic car wash G
WA
RNING
Brakin gefficienc yisreduced after washing
th ev ehicle .This coul dcause an accident. For
this reason, following acar wash, drive with
particular care until the brakes are dry. 366
CareMaintenance and care

G
WARNING
Th ev ehicle is braked when the HOL Dfunction
or DISTRONIC PLUS is activated. Therefore,
deactivate the HOLD function and DISTRONIC
PLUS before the vehicl eiswashed in an auto-
matic car wash.
! Make sure that:
R the side windows and sliding sunroof are
closed completely.
R the blower for the ventilation/heating is
switched off (OFF button is depressed).
R the windscreen wiper switch is at posi-
tion 0.
The vehicl ecould otherwise be dam aged.
! In car washes with atowing mechanism,
make sure that the automatic transmission
is in transmission position N,otherwise the
vehicl ecould be dam aged.
R Vehicles with akey:
do not remove the key from the igniti on
lock. Do not open the driver's door or
front-passenge rdoor when the engin eis
switched off .Otherwise, the automatic
transmission selects park position P
automatically and locks the wheels. You
can prevent this by shiftin gthe auto-
matic transmission to Nbeforehand.
R Vehicles with KEYL ESS-GO:
do not ope nthe driver's door or front-
passenger door when the engin eis
switched off .Otherwise, the automatic
transmission selects park position P
automatically and locks the wheels.
Observe the following to make sure that the
automatic transmission stays in position N:
X Make sure the vehicle is statio naryand the
ignition is switched off.
X Turn the key to position 2(Y page 159 )in
the ignitio nlock.
Use the key instead of the Start/S topb ut-
ton on vehicles with KEYLESS-GO.
X Depress and hold the brake pedal. X
Shift the automatic transmissio ntoposi-
tion N.
X Release the brake pedal.
X Release the electric parkin gbrake.
X Switch off th eignition and leav ethe key in
the ignition lock.
You can wash the vehicle in an automatic car
wash from the ver ystart.
Wash off excess dirt before cleaning the vehi-
cle in an automatic car wash.
After using an automatic car wash ,wipe off
wax from the windscreen and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residue on the wind-
screen.
Washing by hand In some countries, washing by hand is only
allowe
datspecially equipped washing bays.
Observe the legal requirement sfor each indi-
vidual coun try.
X Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use asoft sponge to clean.
X Use amild cleaning agent, such as acar
shampoo approved by Mercedes-Benz.
X Thoroughly hos edown the vehicle with a
gentl ejet of water.
X Do not point the water jet directly towards
the air inlets.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with achamois.
X Do not let the cleanin gagent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of roa dsalt deposits carefully and as
soon as possible. Care
367Maintenance and care Z

High-pressure cl
eaning equipment G
WARNING
Do not use high-pressure cleaner swith circu-
lar-jet nozzles (dirt grinders) to clean your
vehicle ,inparticular the tyres. You could oth-
erwise damage the tyres and cause an acci-
dent.
! Always maintain adistance of at least
30 cm between the vehicle and the high-
pressure cleaner nozzle. Information about
the correc tdistanc eisavailable from the
equipment manufacturer.
Move the high-pressure cleane rnozzle
around when cleanin gyour vehicle.
Do not aim directly at any of the following:
R tyres
R door gaps, roof gaps, join tsetc.
R electrical components
R battery
R connectors
R lights
R seals
R trim elements
R ven tilation slots
Damaged seals or electrical components
can lead to leaks or failures.
Cleanin gthe paintwork !
Do not affix:
R stickers
R films
R magnetic plate sorsimilar items
to painted surfaces. You could otherwise
damage the paintwork.
Scratches, corrosive deposits, areas affected
by corrosion and damage caused by inade-
quate care cannot always be completely
repaired. In such cases, visit aqualified spe-
cialist workshop. X
Remove impurities immediately, where
possible, whils tavoiding rubbing to ohard.
X Soak insect remains with insect remover
and rinse off the treated areas afterwards.
X Soak bird droppings with water and rinse
off the treated areas afterwards.
X Remove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with acloth soaked in petroleum ether or
lighter fluid.
X Use tar remover to remov etar stains.
X Use silicone remover to remove wax.
Care and treatment of mat tpaintwork !
Never polis hthe vehicle or the light alloy
wheels. Polishin gmakes the paintwork
shiny.
! The following may cause the paint to
become shiny and thus reduce the matt
effect:
R Vigorous rubbing with unsuitable mate-
rials.
R Frequent use of car washes.
R Washing the vehicle in direct sunlight.
! Never use paint cleaner, buffing or pol-
ishing products, or glos spreserver, e.g.
wax .These product sare onl ysuitable for
high-glos ssurfaces. Thei ruse on vehicles
wit hm att finish leads to considerable sur-
face damage (shiny, spotted areas).
Always have paintwork repairs performed
at aq ualified specialist workshop, e.g. a
Mercedes-Ben zService Centre.
! Do not use wash programs with ahot wax
treatmen tunder any circumstances.
Observe thes enotes if your vehicle has a
clea rmatt finish. This will help you to avoid
damage to the paintwork due to incorrect
treatment.
Thes enotes also apply to light-alloy wheels
with aclear matt finish. 368
CareMaintenance and care

i
The vehicle should preferably be washed
by hand using asoft sponge, car shampoo
and plent yofwater.
i Use only insect remover and car shampoo
from the range of recommended and
approved Mercedes -Benz care products. Cleaning vehicle parts
Cleaning the wheels !
Do not use acidic wheel cleaning products
to remove brake dust. Thi scould damage
wheel bolts and brake components.
! Do not par kupthe vehicle for an extended
period straight after cleanin git, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings .For this reason, you
should drive for afew minutes after clean-
ing. Brakin gheats the brak ediscs and the
brake pads/linings, thus drying them. The
vehicle can then be parked up.
Cleaning the windows G
WARNING
Switc hoff the windscree nwipers and remove
the key from the ignition lock before cleaning
the windscreen or the wiper blades. On vehi-
cles with KEYL ESS-GO, pres sthe Start/S top
button repeatedly until all indicator lamps in
the instrumen tcluster have gone off. The
windscreen wipers could otherwise move and
injur eyou.
! Do not use dry cloths, abrasive products,
solven tsor cleanin gagents con taining sol-
vent stoc lean the inside of the windows.
Do not touch the insides of the windows
with hard objects, e.g. an ice scraper or
ring. There is otherwise arisk of damaging
the windows.
! Clean the water drainage channels of the
windscreen and the rear window at regular intervals. Deposits such as leaves, petals
and pollen may under certain circumstan-
ces prevent water from drainin
gaway. This
can lead to corrosion damage and damage
to electronic components.
X Clean the inside and outside of the win-
dows with adamp cloth and acleaning
agent that is recommended and approved
by Mercedes-Benz.
Cleanin gthe wiper blades G
WARNING
Switch off the windscree nwipers and remove
the key from the ignition lock before cleaning
the windscreen or the wiper blades. On vehi-
cles with KEYLESS-GO, press the Star t/Stop
butto nrepeatedly unti lall indicator lamps in
the instrumen tcluster have gone off. The
windscreen wipers could otherwise move and
injur eyou.
! Do not pull on the wiper blade. Otherwise,
the wiper blade could be damaged.
! Do not clean wiper blades too often and
do not rub them too hard. Otherwise, the
graphit ecoatin gcould be damaged. This
coul dcause wiper noise.
! Hold the wiper arm securely when folding
back. The windscreen could be damaged if
the wiper arm hits against it suddenly.
X Fold the wiper arms away from the wind-
screen.
X Clea nthe wiper blades carefully usin ga
damp cloth.
X Fold the windscreen wipers back again
befor eswitching on the ignition.
Cleanin gthe exterio rlighting !
Only use cleaning agents or cleaning
cloths that are suitable for plastic lenses.
Unsuitable cleaning agents or cleaning
cloths could scratc hordamage the plastic
lenses of the exterior lighting. Care
369Maintenance and care Z

C
Warning triangle
D Wheel bolts
E Towing eye
X Lif tthe luggage compar tment floor up
(Y page 344). Flat ty
re Prep
aring the vehicle
Your vehicle may be equipped with:
R MOExtended tyres (tyres with run -flat char-
acteristics) (Y page 378)
R aT IREFIT kit (Y page 379)
R an emergency spare whee l(only for cer tain
countries) (Y page 414)
Information on changing/fitting awheel
(Y page 404).
Vehicle preparation is not necessar yonvehi-
cles with MOExtended tyres.
X Stop the vehicle as far away as possible
from traffic, on solid, non-slipper yand level
ground.
X Switch on the hazard warning lamps.
X Engag ethe electric parkin gbrake man-
ually.
X Bring th efront wheels into the straight-
ahead position.
X Move the DIRECT SELECT leve rtoP.
X Vehicle swith the ON&OFFROAD pack-
age: makesure that highway level is selec-
ted (Y page 207).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the key from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver' sdoor.
The on-boar delectronic shave status 0,
which is the same as the key having been
removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 159). X
All occupants must leave the vehicle. Make
sure that they are not endangered as they
do so.
X Make sure that no one is near the danger
area while awheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to traf-
fic condition swhen doing so.
X Close the driver's door.
X Plac ethe warnin gtriangl easuitable dis-
tance away (Y page 376). Observe legal
requirements.
X Unload heavy luggage.
i Only operate the tyre inflation compres-
sor using a12Vs ocket,even if the ignition
is turned off (Y page 350).
An emergenc ycut-off ensures that the on-
board voltage does not drop too low. If the
on-board voltage is too low, the power to
the sockets is automatically cut. This
ensures that there is sufficient power to
start the engine. MOExtended tyres (tyres with run-flat
characteristics)
G
WARNING
When driving in emergenc ymode, the driving
characteristic sdeteriorate, e.g. when cor ner-
ing, accelerating quickly and when braking.
There is arisk of accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and drivin gmanoeu-
vres, and driving over obstacles (kerbs, pot-
holes ,off-road) .This applies in particular to a
laden vehicle.
Sto pdriving in emergency mod eif:
R you hear banging noises.
R the vehicl estart stos hake.
R you see smok eand smell rubber. 378
Flat tyreBreakdown assistance