2017 MERCEDES-BENZ GLS-Class SUV Owner's Manual

Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Enable dSeeOperator' sManual
The front-passenger fron tair bag is enabled during th ejourney, eve n
though :
Rachild, asmall adult or an objec tweighing less than th esystem' s
weigh tthreshold is locate don th efront-passenger seat
or
Rth efront-passenger seat is unoccupied
The system may detec tobjects or force sapplyin gadditional weigh ton
th eseat .
GWARNIN G
The front-passenger fron tair bag may deploy unintentionally.
There is an increased ris kof injury.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 159).
XSwitchth eignition off .
XOpenth efront-passenger door .
XRemove thechild and th echild restrain tsystem from th efront-
passenger seat .
XMakesur ethat there are no objects on th eseat addin gto th e
weight.
The system may otherwise detec tth eadditional weigh tand inter-
pre tth eseat occupant's weigh tas greate rthan it actually is.
XKee pth eseat unoccupied ,close th efront-passenger door and
switch on th eignition .
XObserveth ePASSENGER AI RBA Gindicator lamp sin th ecenter
console and th emultifunction display and chec kth efollowing:
Seat unoccupied and ignition switched on :
Raself-diagnosis is carrie dout .The PASSENGER AI RBA GOF Fand
PASSENGER AI RBA GON indicator lamp smus tligh tup simulta-
neousl yfor approximately six seconds
Rth ePASSENGER AI RBA GOF Findicator lamp mus tthen ligh tup
and remain lit after th eself-diagnosis .If th eindicator lamp is on ,
OCS has disabled th efront-passenger fron tair bag (
Ypage 49)
RtheFront Passenger Airbag Enable dSee Operator' sManualorFront Passenger Airbag Disabled See Opera‐tor's Manualdisplay message smus tno tbe shown in th emul-
tifunction display
XWait for aperiod of at least 60 seconds until th enecessar ysystem
checks hav ebeen completed.
XMak esur ethat th edisplay message sdo no tappear in th emulti-
function display.
If these condition sare fulfilled ,th efront-passenger seat can be occu-
pied again .Whether th ePASSENGER AI RBA GOF For ON indicator
lamp remain slit or goe sout depend son how OCS classifies th eoccu-
pant.
If th econdition sare no tfulfilled ,th esystem is no toperating correctly.
Display messages25 5
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
XVisitaqualified specialist workshop immediately.
Fo rfurther information about th eOccupant Classification System, see
(
Ypage 49).
Lights
i
Vehicles wit hLE Dbulbs in th eligh tclusters :
The display message for th ecorrespondin glamp only appear swhen all of th eLEDs in th elamp
hav efailed.
Display messagesPossible causes/consequences and MSolutions
b
Check LeftLowBea m(Example)
The bulb in question is malfunctioning .
XVisitaqualified specialist workshop .
or
XChec kwhether you are permitte dto replace th ebulb yourself
(Ypage 117).
b
Active HeadlampsInoperative
The active ligh tfunction is faulty.
XVisit aqualified specialist workshop .
b
Malfunction SeeOperator'sManual
The exterio rlighting is malfunctioning .
XVisitaqualified specialist workshop .
Vehicles withtrailer to whitch : afusemay hav eblown .
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 159).
XCheckth efuses (Ypage 343).
XIf necessary, replace th eblown fuse. Observ eth ewarning notes.
If th emultifunction display still shows th edisplay message :
XVisitaqualified specialist workshop .
b
Malfunction SeeOperator'sManual
The exterio rlighting is malfunctioning .
XVisitaqualified specialist workshop .
b
AutoLam pFunctionInoperative
The ligh tsensor is defective.
XVisit aqualified specialist workshop .
b
Switch Off Lights
You leaveth evehicl eand th elights are switched on . Awarning tone
also sounds.
XTurn th eligh tswitch to th eà position .
256Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
b
Switch On Headlamps
You are drivingwit hlow-beam headlamp sswitched off .
XTurn theligh tswitch to th eL orà position .
Adaptive HighbeamAssist CurrentlyUnavailable SeeOperator' sManual
Adaptive Highbea mAssis tis deactivated and temporarily inoperative.
Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty
Rvisibilit yis impaire ddue to heav yrain ,snow or fog
XClean th ewindshield.
If th esystem detects that th ecamera is full yoperational again ,th e
Adaptive
HighbeamAssistNowAvailablemessage is displayed.
Adaptive Highbea mAssis tis operational again .
Adaptive HighbeamAssist InoperativeAdaptive HighbeamAssis tis faulty.
XVisit aqualified specialist workshop .
Engine
Display messagesPossible causes/consequences and MSolutions
+
CheckCoolantLevelSee Operator' sMan ‐ual
The coolan tlevel is to olow.
!Avoid making lon gjourneys wit hto olittl ecoolan tin th eengin e
coolin gsystem. The engin ewill otherwise be damaged.
XAd dcoolant, observing th ewarning note sbefore doin gso
(Ypage 322).
If you have to ad dcoolant frequently:
XContac t aqualified specialist workshop and hav eth eengin ecoolin g
system checked.
?The fan motor is malfunctioning .
XAt coolanttemperatures belo w24 8‡( 120 †), drive to the nearest
qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-and-go traffic.
Display messages257
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
?
CoolantToo HotSto pVehicl eTur nEngine Off
The coolan tis to ohot .
A warning tone also sounds.
GWARNIN G
Do no tdrive when your engin eis overheated. This can caus esom e
fluids whic hmay hav eleaked int oth eengin ecompartmen tto catch
fire.
Steam from th eoverheate dengin ecan also caus eserious burn swhic h
can occur jus tby opening th ehood.
There is aris kof injury.
XPull ove rand stop th evehicl esafely and switch off th eengine, pay-
ing attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 159).
XWait until th eengin ehas cooled down .
XMakesur ethat th eair supply to th eengin eradiato ris no tblocked,
e.g. by snow, slus hor ice .
XDo no tstart th eengin eagain until th edisplay message goe sout and
th ecoolan ttemperature is belo w24 8 ‡ (120†). Otherwise ,th e
engin ecould be damaged.
XPay attention to th ecoolan ttemperature gauge .
If th etemperatur eincreases again:
XVisit aqualified specialist workshop immediately.
Under normal operating condition sand wit hth especified coolan t
level, th ecoolan ttemperature may ris eto 24 8 ‡(120†).
#
See Operator' sMan ‐ual
The battery is no tbein gcharged.
A warning tone also sounds.
Possibl ecauses are:
Radefective alternato r
Ratorn poly-V-belt
Ramalfunction in th eelectronics
!Do no tcontinu edriving. The engin ecould otherwise overheat.
XPull ove rand stop th evehicl esafely and switch off th eengine, pay-
ing attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 159).
XConsult aqualified specialist workshop .
258Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
#
StopVehicl eSeeOperator' sManual
The battery is no longer bein gcharged and th ebattery charg elevel is
to olow.
A warning tone also sounds.
XPull ove rand stop th evehicl esafely and switch off th eengine, pay-
ing attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 159).
XObserv eth einstruction sin th e# See Operator' sManualdisplay message .
XConsultaqualified specialist workshop .
4
CheckEngineOilAtNextRefueling
The engin eoil level has dropped to th eminimum level.
A warning tone also sounds.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill oth-
erwise be damaged.
XChec kth eoil level when next refueling, at th elatest (Ypage 321).
XIf necessary, add engin eoil (Ypage 321).
If th eengin eoil need stoppin gup mor eoften:
XContac t aqualified specialist workshop and hav eth eengin e
checked.
Information on approve dengin eoils can be obtained from any quali-
fie dspecialist workshop or on th eInternet at http://bevo.mercedes -
benz.com.
4
Check Engine OilLevel (Ad d 1quart)
Mercedes-AMG vehicles: th eengin eoil level is to olow.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill oth-
erwise be damaged.
XChec kth eoil level when next refueling, at th elatest (Ypage 321).
XIf necessary, add engin eoil (Ypage 321).
If th eengin eoil need stoppin gup mor eoften:
XContac t aqualified specialist workshop and hav eth eengin e
checked.
Information on approve dengin eoils can be obtained from any quali-
fie dspecialist workshop or on th eInternet at http://bevo.mercedes -
benz.com.
4
Engine Oil LevelLow Sto pVehicl eTurnEngine Off
Mercedes-AMG vehicles: th eengin eoil level is to olow.
There is aris kof engin edamage.
XPull ove rand stop th evehicl esafely and switch off th eengine, pay-
ing attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 159).
XCheckth eengin eoil level (Ypage 321).
XIf necessary, add engin eoil (Ypage 321).
8
Fue lLevel Low
The fuel level has dropped int oth ereserv erange.
XRefue lat th eneares tgas station .
Display messages259
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
CThere is onlyaver ysmall amount of fuel in th efuel tank.
XRefue lat th eneares tgas station without fail .
8
Gas Cap Loose
The fuel filler cap is notclosed correctl yor th efuel system is leaking .
XCheckthat th efuel filler cap is correctl yclosed .
If th efuel filler cap is not correctl yclosed :
XCloseth efuel filler cap .
If th efuel filler cap is correctl yclosed :
XVisitaqualified specialist workshop .
8
Ultra Low-sulfurDiesel FuelOnl y
Vehicles wit h adiesel engine: th efuel level has fallen belo wthe
reserv erange.
XRefue lat th eneares tgas station .
XOnly use commercially available vehicular ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL (ULSD ,15 ppm sulfur MAXIMUM) .
¸
ReplaceAir Filter
Vehicles wit h adiesel engine: th eengin eair filter is dirty and mus tbe
replaced.
XVisit aqualified specialist workshop .
!
Check FuelFilter
Vehicles wit h adiesel engine: there is water in th efuel filter. The water
mus tbe draine doff .
XVisit aqualified specialist workshop .
Ø
Check Additive SeeOperator'sManual
The DE Ftan kis almost empty.
XHav eth eDE Ftan kfilled immediately at aqualified specialist work-
sho p (Ypage 156).
Ø
RemainingStarts :16
The DEFlevel has fallen to aminimum .You can start th eengin e a
further 16 times .
XHaveth eDE Ftan kfilled immediately at aqualified specialist work-
sho p (Ypage 156).
iYou can start th eengin e afurther 16 times .If DE Fis no tadded ,it
will then no tbe possibl eto restar tth eengine. Refill th eDE Ftan k
wit happroximately 1gal (3. 8l) DE F (
Ypage 156).
260Display messages
On-board computer and displays

Drivingsystems
Display messagesPossible causes/consequences an dMSolutions
À
Attention Assist :Take a Break!
Based on certain criteria, ATTENTION ASSIST has detecte dfatigue or
a lac kof concentration on th epar tof th edriver . Awarnin gtone also
sounds.
XIf necessary, take abreak .
Durin glon gjourneys, take regular break sin goo dtime so you get
enough rest.
À
Attention AssistInoperative
ATTENTION ASSIST is inoperative .
XVisitaqualified specialis tworkshop .
Á
Drive Mor eSlowly
You canno tchang eth evehicle level.
Possible causes are :
Ryou are drivingto ofas tfo rth eselecte dvehicle level
Ryou are drivin gto ofas twit h a trailer or th etrailer-couplin gsocke tis
bein gused ,e.g. fo r abicycl erac k
XDrive more slowly and then selec tth edesire dvehicle level again .
RVehicles withth eOff-Road Engineerin gpackage (Ypage 182)
RVehicles wit hth eAIRMATIC package (Ypage 188)
XObserveth enote son towin g atrailer (Ypage 222).
Á
Compresso rIs Cool‐ing
You hav eselecte d ahigher vehicle level. The compressor first needs
to cool down because of frequent level changes.
XDrive in amanne rappropriat efo rth ecurren tvehicle level.
XMak esur ethat there is sufficien tgroun dclearance.
XAllow th ecompressor to cool down .
Whe nth ecompressor has cooled down ,th edisplay messag edis -
appears .The vehicle then continues risin gto th eselecte dlevel.
Á
Malfunction
AIRMATIC is malfunctioning.
XDrive as appropriat efo rth ecurren tvehicle level, but do no texceed
50 mph (80 km/h).
XMak esur ethat there is sufficien tgroun dclearance.
XVisit aqualified specialis tworkshop .
Display messages261
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Á
Max.Speed 12 mph
You are exceedin gth espeed permissibl efor th eselected off-road
level.
In addition ,th evehicl elevel display appear sabov eth edisplay mes -
sage ,and awarning tone sounds.
GWARNIN G
The vehicl ecould ti pand rollover.
There is aris kof an accident.
XAdjus tyour drivin gstyle to th ealtere dhandlin gcharacteristics .
XOnly makeslight steering movement sand avoid fas tsteering move-
ments .
XDo notexceed 12 mph (20 km/h) until th evehicl ehas reached off -
roa dlevel 2.
Á
Raisin gMax.Speed12 mph
The vehicl eis bein gadjusted to off-road level 3.
In addition ,th evehicl elevel display appear sabov eth edisplay mes -
sage .
The display message refers to th emaximum speed permissibl e
(dependin gon th emodel type) for off-road level 3.
XDo no tdrive at speeds abov e12 mph (20 km/h).
g
LoweringMax .Speed12 mph
The vehicl eis bein glowered from off-road level 3to off-road level 2.
In addition ,th evehicl elevel display appear sabov eth edisplay mes -
sage .
The display message refers to th emaximum speed permissibl e
(dependin gon th emodel type) for off-road level 3.
XDo no texceed 12 mph (20 km/h)until the vehicle has reached off-
road level 2.
ACTIVECURVESYSTEMMalfunctionThe ACTIVE CURVE SYSTEM ismalfunctioning. The vehicle's handlin g
characteristics may beaffected.
XDo not drive at speeds above 50 mph (80 km/h).
XVisit aqualified specialist workshop.
ACTIVECURVESYSTEMMalfunction SeeOperator's Manual
The ACTIVE CURVE SYSTEM ismalfunctioning. The vehicle's handlin g
characteristics are severely impaired. A warning tone also sounds.
GWAR NING
There isa risk of an acc ident.
XDrive on carefully.
XAdjust your driving style to the altered handling characteristics.
XAvoid sudden acceleration around tight corners and fast steering
movements.
XDo not drive at speeds above 50 mph (80 km/h).
XVisit aqualified specialist workshop immediately.
262Display messages
On-board computer and displays