2012 MERCEDES-BENZ GL SUV check engine

THERMATIC automatic climate
control (2-
zone) ............................. 137
THERMOTRONIC (3-zone) auto-
mati cclimate control ..................... 139
THERMOTRONIC automatic cli-
mate control with additiona lrear-
compartmen tclimate control (3-
zone) ............................................. .140
Coat hooks ......................................... 344
Cockpit Overview .......................................... 28
se eI nstrument cluster
COLLISIO NPREVENTION ASSIST .......63
COMAND display Clean ing. ........................................ 371
COMAND Online
ON&OFFROAD menu .....................256
se es eparat eoperating instructions
Combination switch ..........................121
Constant headlamp mode seeD aytime driving lights
Consumption statistic s(on-boa rd
computer) .......................................... 271
Conv enienc eclosin gfeature .............. 90
Conv enienc eopening/closing (air-
recirculation mode) ........................... 147
Conv enienc eopening feature ............90
Coolan t(engine)
Checkin gthe level ......................... 363
Display message ............................ 304
Important safety notes ..................429
Temperat ure( on-board computer) .286
Temperat ureg auge ........................ 268
Warning lamp ................................. 333
Cooling
see Climate control
Cornerin glight function
Display message ............................ 300
Function/notes ............................. 123
Crash-respon siveemergency light-
ing ...................................................... .128
Cro sswind drivin gassistance ............68
Crui secontrol
Activating ............. .......................... 194
Activatio ncondition s..................... 194
Cruis econtrol lever ....................... 193
Deactivating ................................... 195 Display message
............................ 314
Driving sy stem ............................... 193
Important safety notes ..................193
LIM ind icator lamp ......................... 193
Selecting ........................................ 193
Storing and maintaining current
spee d............................................. 194
Cu ph older
Centre console .............................. 346
Important safety notes ..................346
Rea rcompartmen t......................... 347
Temperat urec ontrolled ................. 347
Th irdr ow of seats .......................... 347 D
Dashboard seeI nstrument cluster
Dashboard lighting
see Instrument cluster lighting
Data
see Technical data
Daytime drivi nglights
Display message ............................ 303
Function/notes ............................. 119
Switch ingo n/off (on-board com-
puter) ............................................. 280
Dealer ship
see Qualified specialis tworkshop
Delayed switch-off
Exterior lighting (on-board com-
pute r)............................................. 282
Interior lighting .............................. 282
Diagn ostic sc onnec tion...................... 25
Dies el................................................. .426
Dies elparticl efilter .......................... 184
Differential loc k(display message) .308
Digital spe edometer ......................... 272
Dipped-b eamh eadlamps
Changing bulbs .............................. 129
Display message ............................ 300
Setting for driving abroa d(sym-
metrical) ........................................ 118
Setting for driving on the rig ht/
left ................................................. 281
Switch ingo n/off ........................... 120
DIRECT SE LECT lever
se eA utomatic transmission 8
Index

Removin
g....................................... 415
Storage locatio n............................ 415
Techn ical data ............................... 417
Emergency unl ocking
Ta ilgate ............................................ 88
Veh icle ............................................ .84
Engine
Display message ............................ 304
ECO start/stop function ................163
Engine numb er............................... 423
Jump-starting ................................. 386
Runnin girregularl y......................... 166
Starting pro blems .......................... 166
Starting the engine wit hthe key ....161
Starting with KEYLESS GO .............161
Stopp ing. ....................................... 182
To w-st arting (vehicle )..................... 391
Warning lamp (eng ined iagnos-
tics) ............................................... 333
En gine electronics
Notes ............................................. 421
Pro blem (fault) ............................... 166
En gine oil
Additives ........................................ 429
Checking the oil level ...... ............... 362
Checking the oil leve lusing the
dipstick .......................................... 362
Display message ............................ 305
Fil ling capacity ............................... 428
Note sabout oil grades ...... ............. 428
Notes on oil level/cons umption.... 362
Temperat ure( on-board computer) .286
Topping up ..................................... 362
Viscosity ........................................ 429
En vironmental protection
Returning an end-of-life vehicle .......23
ESP ®
(Electronic Stability Pro-
gram) 4ETS ................................................ 66
AMG menu (on-bo ardc omputer )... 287
Deactivating/activating ...................67
Display message ............................ 291
Function/notes ................................ 66
Important safety gu idelines ............. 66
Traile rstabilisatio n.......................... 67
Warn ingl am p................................. 329
Exhaus tpipe (cleaning instruc-
tions) .................................................. 371Exterio
rlighting
see Lights
Exterior mirrors
Adjustin g....................................... 112
Anti-dazzle mod e(automatic) ........114
Fol ding in/ou t(automatically )....... 113
Fol ding in/ou t(electrically) ...........113
Fol ding in whe nlocki ng(on-board
computer) ...................................... 285
Ou tofp osition (troubleshooting) ...113
Parking positio n............................. 114
Resetting ....................................... 113
Storing settings (memory func-
tion) ............................................... 115 F
Faul tmessage
see Display messages
Filler cap
see Fuel filler flap
Fire extinguisher ............................... 377
First-aid kit ......................................... 376
Fittin gawheel
Removin gawheel .......................... 407
Fitting wheels
Fittin gaw heel............................... 408
Lowering the veh icle ...................... 409
Rais ingt he vehicle ......................... 406
Securing the veh icle against roll-
ing away ........................................ 405
Flat tyre
MOExtende dtyres ......................... 378
Pre paring th evehicle ..................... 378
TIREFIT kit ...................................... 379
Floormat ............................................ .358
Foglamps (extende drang e).............. 124
Foldin gthe rear be nchs eat for-
wards/back ....................................... 341
Fording Off-road ......................................... 186
On flo oded roads ........................... 186
Frequencies
Garage door op ener ....................... 354
Mobile phone ................................. 421
Tw o-way radio ................................ 421 Index
11

SRS (Supplementa
lRestraint System)
Introduction SRS consist
sof:
R theS RS warning lamp6
R airbags
R the airbag control unit with crash sensors
R belt tensio ners forthe front seat belts and
the outer seat belts in the rear
R belt force limiters
SRS reduce sthe risk of occupants coming
int oc ontact with the vehicle' sinterior in the
event of an accident. It can also reduce the
forces to which occupant sare subjecte ddur-
ing an accident.
SRS warning lamp G
WARNING
If SRS is malfunctioning, individual systems
may be triggered unintentionally or might not
be triggered in the event of an accident with
ah igh rate of vehicle deceleration.
Am alfunction has occurred if:
R the 6 SRS warning lamp does not light
up when the ignition is switched on.
R the engine is running and the 6SRS
warning lamp does not go out after afew
seconds.
R the engine is running and the 6SRS
warning lamp lights up again.
In this case, have SRS checked immediately
at aq ualified specialist workshop.
SRS functions are checked regularly when
you switch on the ignitio nand whe nthe
engin eisrunning. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than afew seconds
after the engine is started. Triggering of belt tensioners, belt force
limiters and airbags During the first stage of
acollision ,the airbag
con trol unit evaluates important physical
data relatin gtovehicle deceleration or accel-
eration, such as:
R duration
R direction
R magnitude
Based on the evaluation of this data, the air-
bag control unit pre-emptively triggers the
belt tensioners in the first stage.
If there is an even higher rat eofvehicle decel-
eration or acceleration in alongitudinal direc-
tion ,the front airbags ar ealso deployed.
Your vehicle has adaptive, two-stage front air-
bags. The airbag control unit evaluates vehi-
cle deceleration or acceleration in the event
of ac ollision .Inthe first deploymen tstage,
the front airbag is filled with enoug hpropel-
lan tgas to reduce the risk of injuries. The
front airbag is fully deploye difasecond
deployment threshold is reached within afew
milliseconds.
The belt tensioner and airbag triggering
thresholds are variable and are adapted to the
rat eofd eceleration or acceleration of the
vehicle. This process is pre-emptive in nature.
The triggerin gprocess mus ttake place in
good time at the start of the collision.
The rate of vehicle deceleration or accelera-
tion and the direction of the force are essen-
tially determined by:
R the distribution of forces during the colli-
sion
R the collisio nangle
R the deformation characteris tics of the vehi-
cle
R the characteris tics of the object with which
the vehicle has collided
Factors which can only be seen and measured
after acollision has occurred do not play a
decisive role in the deployment of an airbag, Occupant safety
41Safety Z

Important safety notes
If you fail to adapt your driving style or
become distracted, th edriving sa fetysys-
tems ca nneith er reduce th erisk of accident
no ro verri dethe law sofphysics. Driving
safety system sare mere ly aids desig nedto
assis tdrivi ng.You ar eresponsible for the dis-
tance to the vehicle in fr ont, forvehicle speed
and for braking in good time. Alway sadapt
your drivin gstyle to suit the prevailing road
and weather condition sand maintain asafe
distance from the vehicle in front .Drive care-
fully.
i Thed riving safet ysystems described only
work as effectively as possibl ewhen there
is adequate con tact betwee nthe tyres and
the roa dsurface. Pleas epay special atten-
tion to the notes on tyres, recommended
minimum tyre tread depths ,etc.
(Y page 396).
In wintry driving conditions, always use
winter tyres (M+S tyres) and if necessary,
snow chains .Only in this way will the driv-
ing safety systems described in this section
work as effectively as possible. ABS (Anti-lock Braking System)
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page61). G
WARNING
If ABS is faulty, the wheels could lock when
braking .The steerability and brakin gcharac-
teristics ma ybeseverely impaired. Addition-
ally, further driving safet ysystems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diatel yata qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the infor mation on the ABS warning lamp (Y
page 326) and
display messages which may be shown in the
instrument cluster (Y page 291).
ABS regulate sbrake pressure in such away
that the wheels do not lock when you brake.
This allows you to continue steering the vehi-
cle when braking.
ABS works from aspeed of about 8km/h
upwards, regardless of road-surfac econdi-
tions. AB Sworksons lippery surfaces, even
when you only brake gently.
The yellow !ABS warnin glamp in the
instrument cluster lights up when the ignition
is switched on. It goes out when the engine is
running.
Brakes X
If ABS intervenes: continue to depress the
brake pedal with force until the braking sit-
uation is over.
X To mak eafull brake application:
depress th ebrake peda lwith full force.
If ABS intervenes when braking, you will feel
ap ulsing in the brake pedal.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions, and func-
tions as areminder to take extr acare while
driving.
Off-road ABS An ABS system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated on:
R
Vehicles without the ON&OFFROAD pack-
age (Y page 252)
R Vehicles with the ON&OFFROAD package
(Y page 253)
At speeds below 30 km/h, the front wheels
lock cyclically during braking. The digging-in
effect achieved in the process reduces the
stopping distance when driving off-road. This
limits steering capability. Driving safety systems
61Safety Z

In this situation, ESP
®
assist syou and can
detec tifthe vehicle/trailer combination
begins to lurch. ESP ®
slows the vehicle down
by brakin gand limiting the engine outp ut until
the vehicle/trailer combinatio nhas stabi-
lised.
Trailer stabilisation is active above speeds of
about 60 km/h.
Trailer stabilisation does not work if ESP ®
is
deactivated or disabled because of amal-
function.
Crosswin dAssist Strong crosswinds can cause your vehicle to
deviate from astraight course. The crosswind
driving assistance function integrated into
ESP ®
significantly reduces thes eeffects.
ESP ®
intervene sautomatically according to
the direction and intensity of the crosswinds
affecting your vehicle.
When driving on straight roads or gentle
bends ,your vehicle is kept safel yonc ourse
by astabilising brake intervention.
Crosswind driving assistance is active above
av ehicle speed of 80 km /h.
Crosswind driving assistance does not work
if ESP ®
is deactivated or disabled because of
am alfunction. EBD (electronic brake force distribu-
tion)
i Observe the "Importan tsafety notes" sec-
tion (Y page 61). G
WARNING
If EBD has malfunctioned, the rear wheels can
still lock, e.g. under full braking. This increa-
ses the risk of skidding and an accident.
You should therefor eadapt your driving style
to the different handling characteristics. Have
the brak esystem checked at aqualified spe-
cialist workshop. Observe information regarding indicator and
warning lamps (Y
page 327) as well as dis-
play messages (Y page 293).
EBD monitors and controls the brake pres-
sure on the rear wheels to improve driving
stability while braking. ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort. In addi-
tion to the braking function, ADAPTIVE BRAKE
also has the HOLD function (Y page 211) and
hill start assist (Y page 162). PRE-SAFE
®
Brake
i Observe the "Important safety notes" sec-
tion (Y page 61).
PRE-SAFE ®
Brake is only available in vehicles
with DISTRONIC PLUS.
PRE-SAFE ®
Brake can help you to minimise
the risk of acollision with avehicle in front or
reduc ethe effect sofsuchacollision .IfPRE-
SAFE ®
Brake has detected arisk of collision,
you will be warned visually and acoustically
as well as by automatic braking. PRE-SAFE ®
Brake cannot prevent acollision withou tyour
interven tion.
This func tion will issue awarning if:
R at speeds of around 30 km/ horm ore over
several seconds, the distance maintained
to the vehicle travellin ginfront is insuffi-
cient.
The · distance warning lamp then lights
up in th einstrument cluster.
R at as peed of approximately 7km/h or
high er,y ou ver yquickly approach avehicle
in front.
An intermittent warning tone will then
sound and the ·distance warning lamp
will light up in the instrumen tcluster. 68
Driving safety systemsSafety

Key functions
:
& To loc kthe vehicle
; F To open/close the tailgate
= % To unlock the vehicle
X To unlock centrally: press the%but-
ton.
If you do not open the vehicle within
approximatel y40seconds of unlocking:
R the vehicle is locked again.
R the anti-theft system is primed again.
X To lock centrally: press the&button.
The key centrally locks/unlocks:
R the doors
R the tailgate
R the fuel filler flap
When unlocking, the tur nsignals flash once.
When locking, they flash three times.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (Y page 283).
When it is dark, the surroun dlighting also
comes on if it is activated in the on-board
computer (Y page 282). KEYLESS-GO
Genera lnotes Bear in mind that the engine can be started
by any of the vehicle occupants if there is a
KEYL ESS-GO key in the vehicle. Locking and unlockin
gcentrally You can start, lock or unlock the vehicle using
KEYL
ESS-GO .Todot his, you only need carry
the key with you. When you touc hthe surface
of the sensor sonthe vehicle' soutside door
handles ,KEYLESS-GO establishes aradio
connection between the vehicle and the key.
When the engine is started and whils tyou are
driving, KEYLESS -GOa lso check swhether a
valid key is in the vehicle by periodically
establishin gradio contact.
You can combine the KEYLESS-GO functions
with the functions of aconventional key.
Unlock the vehicle by using KEYLESS -GO, for
instance, and lock it usin gthe & button on
the key.
When locking or unlocking with KEYL ESS-GO,
the distance between the key and the corre-
sponding doo rhandle must not be greater
than 1m. X
To unlock the vehicl e:touch the inner
surface of the doo rhandle.
X To lock the vehicle: touch sensorsur-
face :.
X Convenience closing featu re:touch
recessed sensor surface ;for an exten-
ded period.
Further information on the convenience clos-
ing feature (Y page 90).
If you pull on the handl eofthe tailgate, only
the luggage compartmen tofthe vehicle is
unlocked. Key
77Opening and closing Z

Problem Possible causes/consequences and
M Solutions
The engin
ecannot be
started using the key. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting ,and try to start the engine again.
If this doe snot work:
X Check the starter battery and charge it if necessary
(Y page 384).
or
X Jump-start the vehicle (Y page 386).
or
X Consult aqualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. Ad
oor is open. Therefore, the key can notb ed etected as easily.
X Close the door and tr ytostart the vehicle again. There is interferenc
efrom apowerfu lsource of radio waves.
X Start your vehicle with the key in the ignition lock. Doors
Important safety notes
G
WARNING
Only fo rthe Unite dKingdom: if the vehicle
has been locked with the key or with KEY-
LESS-GO, the double lock func tion is activa-
ted as standard. It is then not possible to open
the doors from inside the vehicle.
Therefore, do not leav eany people behind in
the vehicle, particularly children, elderly peo-
ple or people requiring special assistance .As
ar esult, they may not be able to free them-
selves in the event of an emergency. They
could be seriously or even fatally injured by
prolonged exposur etoextremely hig horlow
tempera tures, for example. In this case ,res-
cuin gpeople from outside the vehicle is diffi-
cult.
Deac tivate the interior motion sensor before
you lock the vehicle .The doors can then be
opened from the insid eafter the vehicl ehas
been locked from the outside. G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open adoor from inside the vehicle at any
time, even if it has been locked
R star tthe vehicle usin gakey which has been
left in the vehicle
R release the electric parking brake
They could thereby endanger themselves and
others. Never leave children unsupervised in
the vehicle. Alway stake the key with you
when leaving the vehicle, even if you are only
leaving it for ashort time. Unlocking and opening th
edoors
from the inside
For all countries except the United King-
dom: you can open adoor from inside the
vehicle even if it has been locked.
If the vehicle has been locked with the key or
with KEYLESS -GO, opening adoor from the
inside will trigger the anti-thef talarm system.
Switch off the alarm (Y page 71).82
DoorsOpening and closing

1
To unlock
X Tur nthe emergenc ykey elemen tanti-
clockwise to position 1.
The doo risu nlocked.
i On right -hand-drive vehicles, turn the
emergenc ykey elemen tclockwise.
X Turn the emergenc ykey elemen tback and
remove it.
X Insert the emergenc ykey elemen tinto the
key. Lockin
gthe vehicl e(emergency key
element)
If the vehicle can no longer be locked with the
key, use the emergenc ykey element.
X Open the driver' sdoor.
X Close the front-passenger door, the rear
doors and the tailgate.
X Press the lockin gbutton (Y page 83).
X Check whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs manually, if necessary (Y page 82).
X Close the driver' sdoor.
X Take the emergenc ykey elemen tout of the
key (Y page 78).
X Insert the emergenc ykey elemen tinto the
lock of the driver's doo rasfar as it will go. 1
To lock
X Turn the emergenc ykey elemen tclockwise
as far as it will go to position 1.
i On right-hand-driv evehicles, tur nthe
emergenc ykey elemen tanti-clockwise.
X Turn the emergenc ykey elemen tback and
remove it.
X Make sure that the doors and the tailgate
are locked.
X Insert the emergenc ykey elemen tinto the
key.
i If you lock the vehicl easdescribed above,
the fuel filler flap is not locked. The anti-
theft alar msystem is not primed. Luggage compartment
Important safety notes
G
WARNING
If the engine is runnin gand the tailgate is
open, exhaus tgases can enter the vehicle
interior .This coul dresult in poisoning. There-
fore, mak esure that the tailgat eisalways
closed when th eengine is running.
! The tailgate swi ngsu pwards and to the
rear when opened. Therefore, mak esure
that there is sufficient clearanc eabove and
behin dthe tailgate.
i Opening dim ensionso fthe tailgate
(Y page 431).
Do no tleave the key in the luggage compart-
men t.You coul dotherwis elock yourself out. Luggage compa
rtment
85Opening and closing Z