
Display messages
Possible causes/consequences and
M
MSolutions ¸
Please Please
replace
replace air
air
filter
filter Vehicles wit
hadiesel engine: th eenginea ir filte risdirty and must
be replaced.
X Consult aqualified specialist workshop. !
Clean Clean
the
thefuel
fuel fil‐
fil‐
ter
ter Vehicles wit
hadiesel engine: there is water in th efuel filter. The
water mus tbedrainedoff.
X Consult aqualified specialist workshop. ¯
Refill AdBlue at Refill AdBlue at
workshop See Own‐ workshop See Own‐
er'
sM anual
er' sM anual The AdBlue
®
level has fallen belo wthe reserv erange. Awarning
tone also sounds.
X Hav eAdBlue ®
refilled as soo naspossibleataq ualified spe-
cialist workshop. ¯
Refill AdBlue at Refill AdBlue at
workshop No start workshop No start
in .. km in .. km The AdBlue
®
level is only sufficien tfor thei nd icate ddistance. A
warnin gtonea lso sounds.
X Hav eAdBlue ®
refilled as soo naspossibleataq ualified spe-
cialist workshop. ¯
Refill AdBlue at Refill AdBlue at
workshop Eng. workshop Eng.
start not possible start not possible The AdBlue
®
tan kise mpty. Awarnin gtonea lso sounds. You can
no longer start th eengine.
X Consult aqualified specialist workshop immediately. ¯
Check AdBlue See Check AdBlue See
Owner'
sManual
Owner' sManual The AdBlue
®
system is malfunctioning. Awarnin gtonea lso
sounds.
X Consult aqualified specialist workshop. ¯
Eng. Eng.
start
start not
notpos‐
pos‐
sible in ..km
sible in ..km The AdBlue
®
system is malfunctioning. Awarnin gtonea lso
sounds.
X Consult aqualified specialist workshop immediately. ¯
Eng. Eng.
start
start not
notpos‐
pos‐
sible
sible The AdBlue
®
system is malfunctioning. Awarnin gtonea lso
sounds. You can no longer start th eengine.
X Consult aqualified specialist workshop immediately. 314
Display
messagesOn-boardcomputer an ddisplays

Drivin
gsystems Display messages
Possible causes/consequences and
M
MSolutions À
Attention Assist: Attention Assist:
Tak
eab reak!
Tak eab reak! Based on certain criteria, ATTENTION ASSIST has detecte
dfatigue
or alac kofc oncentrat ion on thepartoft hedriver .Awarnin gtone
also sounds.
X If necessary, take abreak.
Durin glon gjou rneys, take regular break singoodt imesot hatyou
get enough rest. À
Attention Assist Attention Assist
inoperative inoperative ATTENTION ASSIST is inoperative.
X Consult aqualified specialist workshop. ¨or
°
Vehicl erising
Vehicl erising Your vehicle is adjustin
gtothelevel you hav eselected. ¨or
°
Vehicl erising
Vehicl erising
Please wait
Please wait The vehicle level is to
olow when th evehicle is stationary. Awarn-
in gt onea lso sounds.
X Do no tpull away.
The vehicle level is set when th edisplay message disappears. ¨or
°
Sto pv ehicl eVehi‐
Sto pv ehicl eVehi‐
cle too low
cle too low You hav
epulle daway whil ethe vehicle level is still to olow.
AIRMATIC set sthe vehicle to th eselecte dlevel after ashort
period.
X Pull over and stop th evehicle safely as soo naspossible, paying
attention to road and traffic conditions.
X Safeguar dthe vehicle against rollin gaway (Y page 205).
X Wait until th edisplay message disappears befor epulling away. AIRMATIC is faulty.
Awarnin gtonea lso sounds.
X Do no tdrive at speeds abov e80km/h.
X Mak eonlys light steerin gmovements .Otherwise ,the front
wings or th etyres could be damaged if th esteerin gmovement
is to ogreat.
X Liste nfor scrapin gsounds.
X Pull over and stop th evehicle safely, payin gattenti on to road
and traffic conditions, and set ahigher vehicle level.
Dependin gonthemalfunction ,itmay be possible to rais ethe
vehicle.
X Consult aqualified specialist workshop. Display
messages
315On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions ¨or
°
Malfunction
Malfunction The AIRMATIC function is restricted. The vehicle's handlin
gchar-
acteristics may be affected.
X Do no tdrive at speeds abov e80km/h.
X Consult aqualified specialist workshop. Traffi
cSign
Traffi cSign
Assist currently
Assist currently
unavailable See unavailable See
Owner' sManual
Owner' sManual Traffic Sig
nAssistist emporarily inoperative.
Possibl ecauses:
R thew indscree nisdirty in th ecamera' sfield of vision
R visibility is impaire ddue to heav yrain ,sno worf og
X Clean th ewindscreen.
If th esystem detects that th ecamera is full yoperational, th edis-
play message disappears.
Traffic Sig nAssistiso perational again. Traffi
cSign
Traffi cSign
Assist inoperative Assist inoperative Traffic Sig
nAssistisf aulty.
X Consult aqualified specialist workshop. ë
off off The HOLD function is deactivated. The vehicl
eisskidding.
Aw arnin gtonea lso sounds.
X Reactivat ethe HOLD function later (Y page 228). The HOLD function is deactivated. Whe
nthe brak epedal is firmly
depressed, an activation condition is no tfulfilled.
Aw arnin gtonea lso sounds.
X Chec kthe activation condition sfor theH OLDf unction
(Y page 228). 316
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Lan
eK eeping
Lan eK eeping
Assist currently
Assist currently
unavailable See unavailable See
Owner' sMan‐
Owner' sMan‐
ual ual orAc tive Lane
Active Lane
Keeping
Keeping Assist
Assistcur‐
cur‐
rently
rently unavailable
unavailable
See Owner' sManual
See Owner' sManual Lan
eKeepin gAssistorA ctiveLaneK eepin gAssistisd eactivated
and temporarily inoperative. Possibl ecauses:
R thew indscree nisdirty in th ecamera' sfield of vision
R visibility is impaire ddue to heav yrain ,sno worf og
R there hav ebeen no lan emarking sfor an extended period
R thel an em arking sare worn, dark or covered, e.g. by dir torsnow
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
Lan eKeepin gAssistorA ctiveLaneK eepin gAssistiso perational
again.
If th edisplay message does no tdisappear:
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Clean th ewindscreen. Lan
eK eeping
Lan eK eeping
Assist inopera‐ Assist inopera‐
tive tiveor Active Lane
Active Lane
Keepin gAssist
Keepin gAssist
inoperative
inoperative Lan
eKeepin gAssistorA ctiveLaneK eepin gAssistisf aulty.
X Consult aqualified specialist workshop. Blind Spo
tAssist
Blind Spo tAssist
currently unavail‐
currently unavail‐
abl eS ee Owner's
abl eS ee Owner's
Manual Manual orActive
Active
Blind Spo tAssist
Blind Spo tAssist
currently unavail‐
currently unavail‐
abl eS ee Owner's
abl eS ee Owner's
Manual Manual Blind Spot Assis
torActiveBlind Spot Assis tistemporarily inop-
erative .Possibl ecauses:
R thef unction is impaire ddue to heav yrain or snow
R ther ada rsensor system is outside th eoperating temperature
range
R ther ada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion soro ther source sofelectromagnetic radiation
The yellow 9indicato rlamp salso ligh tupint heexterio rmir-
rors.
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
Blind Spot Assis torActiveBlind Spot Assis tisoperational again.
If th edisplay message does no tdisappear:
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Restart th eengine. Display
messages
317On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions Blind Spo
tAssist
Blind Spo tAssist
not
not available
available when
when
towing atrailer
towing atrailer
See Owner' sManual
See Owner' sManual Blind Spot Assis
torActiveBlind Spot Assis tisdeactivated while
towin gatrailer.
You hav eestablished th eelectrica lconnectio nbetween th etrailer
and your vehicle.
X Press aon thesteerin gwhee ltoc onfir mthedisplay mes-
sage. Blind Spo
tAssist
Blind Spo tAssist
inopera‐
inopera‐
tive tiveor Active Blind
Active Blind
Spot
Spot Assist
Assist inoper‐
inoper‐
ative
ative Blind Spot Assis
torActiveBlind Spot Assis tisfaulty.
The yellow 9indicato rlamp salso ligh tupint heexterio rmir-
rors.
X Consult aqualified specialist workshop. Park
Park
Assist
Assist cancel‐
cancel‐
led
led The driver's doo
risopen and th edriver's seat belt has no tbeen
fastened.
X Repea tthe parkin gprocess wit hthe seat belt fastene dand the
driver's doo rclosed. You inadvertentl
ytou ched th emultifunction steerin gwhee lwhile
steerin ginterventio nwas active.
X Whil esteerin ginterventio nisactive,makes uren otto touch the
multifunction steerin gwheel. The vehicl
ehas started to skid and ESP ®
has intervened.
X Use Active Parking Assis tagain later (Y page 239). Park
Park
Assist
Assist inoper‐
inoper‐
ative
ative You hav
ejustc arrie doutalarg enumber of turning or parking
manoeuvres.
Active Parking Assis twill become available again after approx-
imately te nminute s(Ypage 239).
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Switc hoffand restar tthe engine.
If th emultifunction display still shows th edisplay message:
X Consult aqualified specialist workshop. PARKTRONI
Cisfaulty.
X Consult aqualified specialist workshop. Par
kA ssist
Par kA ssist
switched off switched off The vehicl
eisparked. Awarnin gtonea lso sounds.
The display message disappear sautomatically. DISTRONIC PLU
Soff
DISTRONIC PLU Soff DISTRONIC PLU
Shas been deactivated (Y page 217).
If it was no tdeactivated by th edriver ,awarnin gton ea lso sounds. 318
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions DISTRONIC PLUS
DISTRONIC PLUS
available again available again DISTRONIC PLU
Sisoperational again after havin gbeen tempo-
rarily unavailable .You can no wreactivat eDISTR ONIC PLUS
(Y page 217). DISTRONIC
DISTRONIC
PLUS
PLUScur‐
cur‐
rently
rently unavailable
unavailable
See Owner' sManual
See Owner' sManual DISTRONIC PLU
Sistemporarily inoperative.
Steerin gAssista nd Stop&Go Pilo tare temporarily inoperative.
Possibl ecauses:
R thef unction is impaire ddue to heav yrain or snow
R ther ada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion soro ther source sofelectromagnetic radiation
R thes ystem is outside th eoperating temperature range
R theo n-bo ardv oltag eistoolow
Aw arnin gtonea lso sounds.
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
DISTRONIC PLU Sisoperational again.
If th edisplay message does no tdisappear:
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Restart th eengine. DISTRONIC PLUS
DISTRONIC PLUS
inoperative inoperative DISTRONIC PLU
Sisfaulty.
The following may hav ealso failed:
R BA SP LUSw ithC ross-Traffic Assist
R PRE-SAFE ®
Brake
R Steerin gAssista nd Stop&Go Pilot
Aw arnin gtonea lso sounds.
X Consult aqualified specialist workshop. DISTRONIC
DISTRONIC
PLUS
PLUSsus‐
sus‐
pended
pended You hav
edepressed th eaccelerato rpedal .DISTR ONIC PLU Sisno
longer controllin gthe speed of th evehicle.
X Remove your foot from th eaccelerato rpedal. DISTRONIC PLUS
DISTRONIC PLUS
---k m/h
---k m/h An activation condition fo
rDISTR ONIC PLU Sisnotfulfilled.
X Chec kthe activation condition sfor DISTRONIC PLUS
(Y page 217). Display
messages
319On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions DISTRONIC
DISTRONIC
PLUS
PLUSand
and
SPEEDTRONIC inop‐
SPEEDTRONIC inop‐
erative erative DISTRONIC PLU
Sand SPEEDTRONIC are faulty.
Steerin gAssista nd Stop&Go Pilo tare therefore also unavailable.
Aw arnin gtonea lso sounds.
X Consult aqualified specialist workshop. DTR+: steering
DTR+: steering
assist
.currently
assist .currently
unavailable See unavailable See
Owner' sManual
Owner' sManual Steerin
gAssista nd Stop&Go Pilo tare temporarily inoperative.
Possibl ecauses:
R thew indscree nisdirty in th ecamera' sfield of vision
R visibility is impaire ddue to heav yrain ,sno worf og
R there are no lan emarking sfor alon gore xtende dperiod
R thel an em arking sare worn, dark or covered, e.g. by dir torsnow
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
Steerin gAssista nd Stop&Go Pilo tare operative again.
If th edisplay message does no tdisappear:
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Clean th ewindscreen. DTR+: steering DTR+: steering
assistant inopera‐ assistant inopera‐
tive tive Steerin
gAssista nd Stop&Go Pilo tare faulty.
However, th eDISTR ONIC PLU Sfunction sare still available.
Aw arnin gtonea lso sounds.
X Consult aqualified specialist workshop. Cruise
Cruise
control
control and
and
SPEEDTRONIC inop‐
SPEEDTRONIC inop‐
erative erative SPEEDTRONIC and cruise control are malfunctioning.
Aw arnin gtonea lso sounds.
X Consult aqualified specialist workshop. Limit
Limit
--- km/h --- km/h Whil
edepressin gthe accelerato rpedal beyon dthe pressur epoint
(kickdown), SPEEDTRONIC canno tbeactivated.
X If condition spermit ,drive faste rtha n3 0km/ hand store the
speed. 320
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Cruise control
Cruise control
---k
m/h
---k m/h Ac
onditi on foractivatin gcruise control has no tbeen met.
You hav etried to store aspeed belo w30km/ h, fo rexample.
X If condition spermit ,drive faste rtha n3 0km/ hand store the
speed.
X Chec kthe activation condition sfor cruise control (Y page 212). 120 km/h 120 km/h
Maximu
mspeed
Maximu mspeed
exceeded exceeded Only fo
rcertai ncountries: th emaximum speed has been excee-
ded.
In addition ,the multifunction display shows 120 km/h! 120 km/h!
X Drive mor eslowly. Display
messages
321On-boardcomputer an ddisplays Z