2016 MERCEDES-BENZ GL-Class Owner's Manual

Display messagesPossible causes/consequences andMSolutions
If these conditionsare fulfilled ,th efront-passenger seat can be
occupied again .Whether th ePASSENGER AI RBA GOF Findicato r
lamp remain slit or goe sout depend son how OCS classifie sth e
occupant .
If th econdition sare no tfulfilled ,th esystem is no toperating cor-
rectly.
XVisit aqualified specialist workshop immediately.
Lights
i
Vehicles wit hLE Dbulbs in th eligh tclusters :
The display message fo rth ecorrespondin glamp only appears when all of th eLEDs in th e
lamp hav efailed.
Display messagesPossible causes/consequences and MSolutions
b
Check LeftCorner ‐
ing LightorCheck
Right Cornering
Light
The lef tor right-hand cornering ligh tis defective.
XVisit aqualified specialist workshop .
b
Check LeftLow
Bea morCheck
Right Low Bea m
The leftor right-hand low-beam headlamp is defective.
XChec kwhether you are permitte dto replac eth ebulb yourself
(
Ypage 136).
or
XVisit aqualified specialist workshop .
b
Trailerrighttail
lamp
The lef tor right-hand trailer tai llamp is faulty.
XConsult th emanufacturer' soperating instructions.
b
Traile rlef tindi‐
catoror Traile r
right indicator
The leftor right-hand trailer tur nsignal lamp is defective.
XConsult th emanufacturer' soperating instructions.
b
Traile rbrake lam p
The trailer brak elamp is defective.
XConsult th emanufacturer' soperating instructions.
Display messages30 3
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
b
Rearlef tindica ‐
tororRea rright
indicator
The rear left-han dor rear right-hand tur nsignal is defective.
XVisit aqualified specialist workshop .
b
Front leftindica ‐
tororFront right
indicator
The fron tleft-han dor fron tright-hand tur nsignal is defective.
XVisit aqualified specialist workshop .
b
Leftmirrorindica ‐
tororRight mir ‐
ror indicator
The turnsignal in th eleft-han dor right-hand exterio rmirror is
defective.
XVisit aqualified specialist workshop .
b
Third brake lamp
The high-mountedbrak elamp is faulty.
XVisit aqualified specialist workshop .
b
Leftbrake lam por
Right brake lam p
The leftor right-hand brak elamp is defective.
XChec kwhether you are permitte dto replac eth ebulb yourself
(
Ypage 137).
or
XVisit aqualified specialist workshop .
b
Left-hand tail
lamp/brakelam por
Right-han dtai l
lamp/brak elam p
The lef tor right-hand tai llamp/brak elamp is defective.
XVisit aqualified specialist workshop .
b
Lefthig hbea mor
Right hig hbea m
The lef tor right-hand high beam is defective.
XChec kwhether you are permitte dto replac eth ebulb yourself
(
Ypage 137).
or
XVisit aqualified specialist workshop .
b
LicensePlate Lam p
The leftor right-hand license plat elamp is faulty.
XVisit aqualified specialist workshop .
b
Rearfog lam p
The rear fo glamp is faulty.
XVisit aqualified specialist workshop .
304Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
b
Frontleftparkin g
lamporFront
right parkin glam p
The fron tlef tor fron tright parkin gor standin glamp is defective.
XChec kwhether you are permitte dto replac eth ebulb yourself
(
Ypage 137).
or
XVisit aqualified specialist workshop .
b
Backup Light
The backup lamp is defective.
XVisitaqualified specialist workshop .
b
Front leftsid e
marker lam por
Front right sid e
marker lamp
The frontleft-han dor fron tright-hand side marke rlamp is faulty.
XVisit aqualified specialist workshop .
b
Lefttai llam por
Right tai llam p
The lef tor right-hand tai llamp is defective.
or
The rear left-han dor rear right-hand side marke rlamp is faulty.
XVisit aqualified specialist workshop .
b
CheckLeftDaytim e
RunningLightor
Check Right Day ‐
timeRunnin gLight
The lef tor right-hand daytime running lamp is faulty.
XVisit aqualified specialist workshop .
b
Active Light Sys‐
tem inoperative
The active lightfunction is faulty.
XVisit aqualified specialist workshop .
b
Malfunction See
Operator'sManual
The exterio rlighting is defective.
XVisit aqualified 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 189).
XCheckth efuses (Ypage 400).
XIf necessary, replac eth eblown fuse. Observ eth ewarnin gnotes.
If th edisplay message continues to be displayed:
XVisit aqualified specialist workshop .
Display messages305
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
b
AUTOlightsinoper ‐
ative
The ligh tsensor is defective.
XVisit aqualified specialist workshop .
b
Switch off lights
You leaveth evehicl eand th eligh tis still switched on . Awarnin g
tone also sounds.
XTur nth eligh tswitch to th eà position .
Adaptive Highbeam
Assist Currently
Unavailable See
Operator' sManual
Adaptive Highbeam Assis tis deactivated and temporarily inoper -
ative. Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty.
Rvisibility is 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 Highbeam Assist Now Available
message is dis-
played .
Adaptive Highbeam Assis tis operational again .
Adaptive Highbeam
Assist Inoperative
Adaptive Highbeam Assis tis faulty.
XVisit aqualified specialist workshop .
Engine
Display messagesPossible causes/consequences and MSolutions
+
Check Coolant
Level See Opera‐
tor's Manual
The coolantlevel is to olow.
!Avoid makin glon gjourneys wit hto olittl ecoolan tin th eengin e
coolin gsystem. The engin ewill otherwise be damaged.
XAd dcoolant, observin gth ewarnin gnote sbefore doin gso
(
Ypage 373).
XIf you need to add coolan tmor eofte nthan usual, hav eth e
engin ecoolan tsystem checke dat aqualified specialist work-
shop.
?The fan motor is faulty.
XAt coolan ttemperatures belo w24 8 ‡ (120†), drive to th e
neares tqualified specialist workshop .
XAvoid subjecting theengin eto heav yloads ,e.g. drivin gin moun-
tainous terrain ,and stop-and-g otraffic.
306Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
?
CoolantToo Hot
Sto pVehicl eTur n
Engine Off
The coolan tis to ohot .
A warnin gtone also sounds.
GWARNIN G
Do notdrive when your engin eis overheated. This can caus esom e
fluids whic hmay hav eleaked into th eengin ecompartmen tto
catch fire.
Steam from th eoverheated engin ecan also caus eserious burn s
whic hcan occur jus tby openin gth ehood.
There is aris kof injury.
XPull ove rand stop th evehicl esafely and switch of fth eengine,
payin gattention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 189).
XWait until th eengin ehas cooled down .
XMakesur ethat th eair supply to th eengin eradiato ris no t
blocked, 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†). Other -
wise ,th eengin ecould be damaged.
XPay attention to th ecoolan ttemperature display.
XIf th etemperature increase sagain ,visit aqualified specialist
workshop immediately.
Under normal operating condition sand wit hth especified coolan t
level, th ecoolan ttemperature may ris eto 24 8 ‡(120†).
#
SeeOperator' sMan‐
ual
The battery is no tbein gcharged.
A warnin gtone also sounds.
Possibl ecauses are:
Radefective alternato r
Ratorn poly-V-belt
Ramalfunction in th eelectronics
!Do no tcontinue driving. The engin ecould otherwise overheat .
XPull overand stop th evehicl esafely and switch of fth eengine,
payin gattention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 189).
XConsult aqualified specialist workshop .
Display messages307
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
#
StopVehicl eSee
Operator' sManual
The battery is no longer bein gcharged and th ebattery charg elevel
is to olow.
A warnin gtone also sounds.
XPull ove rand stop th evehicl esafely and switch of fth eengine,
payin gattention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 189).
XObserv eth einstruction sin th e# SeeOperator' sManual
display message .
XConsultaqualified specialist workshop .
4
Check Engine Oil
At NextRefueling
The engin eoil level has dropped to th eminimum level.
A warnin gtone also sounds.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill
otherwise be damaged.
XChec kth eoil level when next refueling, at th elatest
(
Ypage 371).
XIf necessary, add engin eoil (Ypage 372).
XHav eth eengin echecke dat aqualified specialist workshop if
you need to add engin eoil mor eofte nthan usual.
Information on approve dengin eoils can be obtained from any
qualified specialist workshop or on th eInternet at http:/ /
bevo.mercedes-benz.com.
4
Check Engine Oil
Level (Ad d 1
quart)
Mercedes-AMG vehicles: th eengin eoil level is to olow.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill
otherwise be damaged.
XChec kth eoil level when next refueling, at th elatest
(
Ypage 371).
XIf necessary, add engin eoil (Ypage 372).
XHav eth eengin echecke dat aqualified specialist workshop if
you need to add engin eoil mor eofte nthan usual.
Information on approve dengin eoils can be obtained from any
qualified specialist workshop or on th eInternet at http:/ /
bevo.mercedes-benz.com.
308Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
4
Engine Oil Level
StopVehicl eTur n
Engine 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 of fth eengine,
payin gattention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 189).
XCheckth eengin eoil level (Ypage 371).
XIf necessary, add engin eoil (Ypage 372).
8
Fue lLevel Low
The fuel level has dropped into th ereserv erange.
XRefuel at th eneares tgas station .
CThere is only aver ysmall amount of fue lin th efuel tank.
XRefuel at th eneares tgas station without fail .
8
Gas Cap Loose
The fuel system pressur eis to olow. The fuel filler cap is no tclosed
correctl yor th efue lsystem is leaking.
XChec kthat th efue lfiller 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-sulfur
Diesel FuelOnl y
Vehicles wit h adiesel engine: th efuel level has fallen belo wthe
reserv erange.
XRefuel at 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 filte ris dirty and mus t
be 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 .
Display messages309
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Ø
CheckAdditiveSee
Operator'sManual
The DE Ftan kis almost empty.
XHav eth eDE Ftan kfilled as soo nas possibl eat aqualified spe -
cialist workshop (
Ypage 186).
Ø
Remaining Starts :
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
workshop (
Ypage 186).
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 F
tan kwit happroximately 1gal (3.8 l)DEF (
Ypage 186).
Driving systems
Display messagesPossible causes/consequences and MSolutions
À
Attention Assist:
Take a Break!
Based on certain criteria, ATTENTION ASSIST has detected fatigue
or a lack of concentration on the part of the driver. A warning tone
also sounds.
XIf necessary, take a break.
During long journeys, take regular breaks in good time so you get enough rest.
À
Attention Assist
Inoperative
ATTENTION ASSIST is inoperative.
XVisit a qualified specialist workshop.
Á
Drive More Slowly
You cannot change the vehicle level. Possible causes are:
Ryou are driving too fast for the selected vehicle level.
Ryou are towing a trailer.
Rthe socket of the trailer tow hitch is being used, e.g. for a bicyclerack.
XDrive more slowly and then select the desired vehicle level
again.
RVehicles with the ON&OFFROAD package (Ypage 213)
RVehicles with the AIRMATIC package (Ypage 219)
XObserve the notes on towing a trailer (Ypage 264).
310Displa y messages
On-board computer and displays