Display messagesPossible causes/consequences andMSolutions
:
Visit workshop
ASRhas been deactivated due to amalfunction .
The engin epowe routput may be reduced.
GWARNIN G
The driven wheels can spin when accelerating .
There is an increased ris kof skiddin gand accidents .
XDrive on withcare.
XVisit aqualified specialist workshop immediately.
:
Visit workshop
BA Shas been deactivated due to amalfunction .
GWARNING
The brak esystem continues to function normally, but without elec -
tronic support .
The braking distanc ecan increas ein emergenc ybraking situations.
There is aris kof an accident.
XDrive on wit hcare.
XVisit aqualified specialist workshop immediately.
:
Unavailable
AS Rand BA Shav ebeen deactivated due to undervoltage.
The battery may no tbe bein gcharged.
GWARNIN G
The brak esystem continues to function normally, but without th e
function slisted above. The wheels could therefor eloc kif you brak e
hard, for example.
The braking distanc ecan increas ein emergenc ybraking situations.
The driven wheels can spin when accelerating .
There is an increased ris kof skiddin gand accidents .
XDrive on withcare.
XVisit aqualified specialist workshop immediately.
#
Brake wea rVisitworkshop
The brak epads/linings hav ereached their wear limit.
XHav eth ebrak epads/linings replace das soo nas possibl eat a
qualified specialist workshop .
Display messages179
On-board computer and displays
Z
Display messagesPossible causes/consequences andMSolutions
b
Brake fluid Visitworkshop
There is insufficientbrak eflui din th efluid reservoir .
GWARNING
Braking performance can be impaired.
There is aris kof an accident.
XStop th evehicl eas soo nas possible, payin gattention to roa dand
traffic conditions.
XChec kth ebrak efluid level in th ebrak efluid reservoir
(Ypage 219).
If th ebrak eflui dis belo wtheMIN mark:
XDo no tcontinu edrivin gunder any circumstances.
XDo no tadd brak efluid .This does no tsolv eth eproblem .
XConsult aqualified specialist workshop .
If th ebrak eflui dis abov eth eMIN mark:
XDrive on wit hcare.
XVisit aqualified specialist workshop immediately.
b
Brake force distri ‐bution
EBDhas been deactivated due to undervoltage.
The battery may no tbe bein gcharged.
GWARNIN G
The rear wheels could loc kwhen you apply th ebrakes. The braking
distanc ecan increas ein emergenc ybraking situations.
There is an increased ris kof skiddin gand accidents .
XStop thevehicl eas soo nas possible, payin gattention to roa dand
traffic conditions.
XDo no tdrive on .
XConsult aqualified specialist workshop .
b
Brake force distri‐bution Visit work‐shop
EBDhas been deactivated due to amalfunction .
GWARNING
The rear wheels could loc kwhen you apply th ebrakes. The braking
distanc ecan increas ein emergenc ybraking situations.
There is an increased ris kof skiddin gand accidents .
XStop thevehicl eas soo nas possible, payin gattention to roa dand
traffic conditions.
XDo no tdrive on .
XConsult aqualified specialist workshop .
180Display messages
On-board computer and displays
Display messagesPossible causes/consequences andMSolutions
ESP
Visit workshop
ESP®has been deactivated due to amalfunction .As aresult ,cruise
control has also been deactivated.
Engin epowe routput may be reduced.
GWARNIN G
If ES P
®is no toperational, ES P®will notstabiliz eth evehicle.
There is an increased ris kof skiddin gand accidents .
XDrive on withcare.
XVisit aqualified specialist workshop immediately.
ESP
Unavailable
ES P®has been deactivated due to undervoltage. As aresult ,cruise
control has also been deactivated.
The battery may no tbe bein gcharged.
GWARNIN G
If ES P
®is no toperational, ES P®will notstabiliz eth evehicle.
There is an increased ris kof skiddin gand accidents .
XDrive on withcare.
XConsult aqualified specialized workshop as soo nas possible.
c
Parkin gbrakeReleas ebrake
Additionally, awarning tone sounds.
You are drivin gwit hth eparking brak eapplied.
XReleas eth eparking brak e (Ypage 128).
7
Seatbeltsys.Visitworkshop
The belt system has malfunctioned.
GWARNIN G
In th eevent of an acciden tor arapi ddeceleration ,th eseat belt seither
canno tprotect you as intended.
There is aris kof injury.
XConsult aqualified specialized workshop as soo nas possible.
6
Restraint systemVisit workshop
The restrain tsystem is faulty.
GWARNIN G
If th erestrain tsystem is malfunctioning ,individual systems could be
triggered inadvertentl yor might no tbe triggered at all in th eevent of
an accident.
There is an increased ris kof injury and accidents .
XDrive on withcare.
XVisit aqualified specialist workshop immediately.
Display messages18 1
On-board computer and displays
Z
Lights
Display messagesPossible causes/consequences andMSolutions
b
Low beam left
The left-hand low beam is faulty3.
XHalogen headlamps:replace the bulb as soon as possible
(Ypage 88).
XBi-Xenon headlamps: consult a qualified specialist workshop as
soon as possible.
b
Low beam right
The right-hand low-beam headlamp is faulty3.
XHalogen headlamps: replace the bulb as soon as possible
(Ypage 88).
XBi-Xenon headlamps: consult a qualified specialist workshop as
soon as possible.
b
Cornering lt. left
The left-hand cornering light is faulty3.
XReplace the bulb as soon as possible (Ypage 88).
b
Cornering lt. right
The right-hand cornering light is faulty3.
XReplace the bulb as soon as possible (Ypage 88).
b
Lights on auto‐matic. Remove key
The automatic headlamp feature is active: the light switch is in the
à position and you have forgotten to remove the key.
XRemove the key from the ignition lock.
b
Turn signal left
The left-hand turn signal is faulty.
XChange the bulb as soon as possible in the front (Ypage 89) or rear
(Ypage 90) indicator lamp.
b
Turn signal right
The right-hand turn signal is faulty.
XChange the bulb as soon as possible in the front (Ypage 89) or rear
(Ypage 90) indicator lamp.
b
Brake lamp left
The left brake lamp is faulty3.
XReplace the bulb as soon as possible (Ypage 90).
b
Brake lamp right
The right brake lamp is faulty3.
XReplace the bulb as soon as possible (Ypage 90).
b
Third brake lamp
The high-mounted brake lamp is faulty3. This display message will only
appear if all LEDs have failed.
XConsult a qualified specialized workshop as soon as possible.
b
High beam left
The left high-beam headlamp is faulty3.
XReplace the bulb as soon as possible (Ypage 88).
3Depending on the equipment, the bulb-failure indicator may not befeatured for any lamps other than the turn
signals.
182Display messages
On-board computer and displays
Display messagesPossible causes/consequences andMSolutions
b
Highbea mright
The right high beam headlamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 88).
b
Licenseplate lam p
Alicense plat elamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 91).
b
Switch off lights
You haveforgotte nto switch off th elights when leaving th evehicle.
XTurn th eligh tswitch to $.
b
Foglampfront lef t
The left-han dfron tfog lamp is faulty.3
XHav eth ebulb replace das soo nas possibl eat aqualified specialist
workshop .
b
Foglampfront right
The right-hand fron tfog lamp is fault y3.
XHaveth ebulb replace das soo nas possibl eat aqualified specialist
workshop .
b
Rearfoglam p
The rear fog lamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 90).
b
Parkinglam pfrontlef t
The fron tlef tparking lamp/standin glamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 88).
b
Parkinglam pfrontright
The fron tright parking lamp/standin glamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 88).
b
Reverselam p
Abackup lamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 90).
b
Taillam plef t
The left-han dtai llamp is faulty.3
XReplac eth ebulb as soo nas possibl e (Ypage 90).
b
Taillam pright
The right-hand tai llamp is faulty.3
XReplac eth ebulb as soo nas possibl e (Ypage 90).
b
Marker lam p
Aperimete rlamp is faulty.3
XReplac eth ebulb as soo nas possibl e (Ypage 92).
3Dependin gon th eequipment, th ebulb-failure indicato rmay no tbe featured for any lamp sother than th etur n
signals.
Display messages18 3
On-board computer and displays
Z
Display messagesPossible causes/consequences andMSolutions
Highbeam AssistinoperativeHighbeamAssis tis faulty.
XVisit aqualified specialist workshop .
HighbeamAssisttem‐porarily unavaila‐ble
Highbea mAssis tis deactivated and temporarily inoperative.
Possibl ecauses are:
RThe camera' sfunctionalit yis impaire ddue to heav yrain ,snow or
fog .
RThe windshield is dirty in th ecamera' sfield of vision .
XStop thevehicl epayin gattention to roa dand traffic conditions.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 127).
XClean th ewindshield (Ypage 231), particularly in th ecamera' s
field of vision .
If th emalfunction has been rectified, th eHighbeam Assist
available againmessage appears.
Engine
Display messagesPossible causes/consequences and MSolutions
Check DieselExhaustFluid SeeOperator' sManual
The DE Fsupply has dropped belo w1.5US gal (5. 5l).
XAd dDE Fsupply (Ypage 126).
The display message only disappear swhen th evehicl eis stationary,
at th elatest after 20 seconds, as soo nas you switch on th eignition
or start th eengin eafter refueling.
å
XX starts remaining
Three short warning tone salso sound.
Afte rth emessage appear sfor th efirst time, th eremaining DE Fsupply
will last for approximately 1200 mile s(1900 km). The engin ecan then
only be started another 16 times .
The number of remaining engin estart sxx
(16to 0)is shown in th e
message every time th eengin eis started.
XAd dat least 1. 5US gal (5.5l)of DEF (Ypage 126).
å
Idle Mode
The yellow ;Check Engine indicator lamp also lights up and three
short warning tones sound.
You cannot drive the vehicle at a speed exceeding 5 mph (8 km/h).
XAdd at least 1.5 US gal (5.5 l)of DEF (Ypage 126).
The display message and the yellow ;Check Engine indicator
lamp only disappear when the vehicle is stationary, at the latest
after 20 seconds as soon as you switch on the ignition or start the
engine after refueling.
Check DieselExhaust Fluid SeeOperator's Manual
In addition, the yellow ;DEF indicator lamp lights up and a warning
tone sounds.
The DEF reducing agent is contaminated, diluted or is not compliant
with ISO 22241.
XHave the DEF tank cleaned and refilled at a qualified specialist
workshop as soon as possible.
184Display messages
On-board computer and displays
Display messagesPossible causes/consequences andMSolutions
å
XX starts remaining
The yellow; CheckEngin eindicator lamp also lights up and three
short warning tone ssound.
Afte rth emessage appear sfor th efirst time, th eremaining DE Fsupply
will last for approximately 1200 mile s(1900 km). The engin ecan then
only be started another 16 times .
The number of remaining engin estart sxx
(16to 0)is shown in th e
message every time th eengin eis started.
The DE Freducin gagen tis contaminated, diluted or is no tcomplian t
wit hIS O 22241.
The exhaust gas aftertreatmen tis malfunctioning or an emission rel -
evan tmalfunction has occurred .This malfunction or defec tcan dam-
age th eexhaust gas aftertreatment.
XVisit aqualified specialist workshop immediately.
å
Idl eMod e
The yello w; CheckEngin eindicator lamp also lights up and three
short warning tone ssound.
The vehicl ecanno tbe driven at aspeed exceedin g 5mph (8 km/h).
XVisit aqualified specialist workshop immediately.
?
Coolan tStop, tur nengine off
The coolanttemperature is to ohigh .
If th evehicl eis stoppe dafter bein gsubjecte dto extreme loads ,th e
coolan twarning lamp may come on when th eignition is switched on
or th eengin eis restarted. Suc hloads can be, for example, drivin gin
mountainous terrain or drivin gwit h a trailer .
XRun th eengin efor approximately 1minute at idlin gspeed.
XConsult aqualified specialist workshop if th edisplay message con-
tinue sto be shown.
*
Check coolan tlevel
The coolan tlevel is to olow.
Never run th eengin eif th ecoolan tlevel is to olow. The engin ecould
overheat and be damaged.
XStop th evehicl eas soo nas possible, payin gattention to roa dand
traffic conditions.
XSwitc hoff th eengin eand let it cool down .
XAddcoolan tand be sur eto observ eth ewarning note s
(Ypage 280).
XIf you need to add coolan tfrequently, hav eth eengin ecoolin gsys-
te m checke dat aqualified specialist workshop .
7
Reservefue lDriveto agas statio n
The fuel level has fallen int oth ereserv erange.
XRefue lat th eneares tgas station (Ypage 124).
:
WaterinfuelVisitworkshop
The water that has collecte din th ewater separator has reached th e
maximum level.
XDrain th ewater separator (Ypage 220).
Display messages185
On-board computer and displays
Z
Display messagesPossible causes/consequences andMSolutions
m
Fuelfilter Visitworkshop
The fuel filter is dirty.
XHav eth efuel filter elemen treplace das soo nas possibl eat aquali-
fie dspecialist workshop .
4
Engine oil Add 1.0quart(Canada: 1.0liter)
The oil level is toolow.
XChec kth eoil level th enext time you refuel (Ypage 216), and add
oil.
4
Engine oil levelNot whe neng .run ‐ning
You wan tto chec kth eengin eoil level eve nthough th eengin eis still
running.
XSwitc hoff th eengine.
XChec kth eoil level (Ypage 216).
4
Engine oil levelReduce oil level
You haveadded to omuc hengin eoil. There is aris kof damaging th e
engin eor catalytic converter.
XChec kth eoil level (Ypage 216).
XIf theoil level is to ohigh :hav eth eengin eoil extracted at th enext
qualified specialist workshop .
XIf theoil level is correct: hav eth emalfunction rectifie dat th enext
qualified specialist workshop .
4
Engine oil levelStop, turnengineoff
There is no tenough or no oil in th eengine. There is adanger of engin e
damage.
XStop th evehicl eas soo nas possible, payin gattention to roa dand
traffic conditions.
XChec kth eoil level wit hth eoil dipstick (Ypage 217).
XIf theengin eoil level is correct: hav eth emalfunction rectifie d
immediately at aqualified specialist workshop .
XIf theengin eoil level is to olow: hav eth evehicl etowed to aqualified
specialist workshop .
4
Oil sensor Visitworkshop
There isamalfunction in th eengin eoil level display.
XHav eth evehicl echecke dimmediately at aqualified specialist
workshop .
Driving systems
Display messagesPossible causes/consequences and MSolutions
_ _ _
Cruise control
The activation condition sfor cruise control hav eno tbeen met .
You can only activat ecruise control from speeds of 20 mph
(30 km/h).
Cruise contro l
Visit workshop
Cruisecontrol has been deactivated due to amalfunction .
XHavecruise control checke dat aqualified specialist workshop .
186Display messages
On-board computer and displays