2015 MERCEDES-BENZ E-CLASS SALOON air condition

Display messages
Possible causes/consequences and
M
MSolutions J
Check brake fluid Check brake fluid
level level There is insufficien
tbrak efluidint hebrak efluidr eservoir.
In addition ,the red J warnin glamp lights up in th einstrument
cluster and awarnin gtones ounds.
G WARNING
Braking efficiency may be impaired.
There is ariskofana ccident.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions. Do no tcontinu edriving
under any circumstances.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Consult aqualified specialist workshop.
X Do no ttop up th ebrak efluid. This does no tcorrect thef ault. #
Check brake pad Check brake pad
wear wear The brak
epads/lining shaver eached their wear limit.
X Consult aqualified specialist workshop. G
inoperative inoperative On
eorm orem ain features of th eMercedes-Ben zConnect system
are malfunctioning.
X Hav ethe system checke dataqualified specialist workshop. Collision Preven‐
Collision Preven‐
tio
nA ssist Plus
tio nA ssist Plus
currently unavail‐ currently unavail‐
abl eS ee Owner's
abl eS ee Owner's
Manual Manual COLLISION PREVENTION ASSIST PLU
Sistemporarily inoperative.
Possibl ecauses:
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
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
COLLISION PREVENTION ASSIST 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. Collision Preven‐
Collision Preven‐
tio
nA ssist Plus
tio nA ssist Plus
inoperative inoperative COLLISION PREVENTION ASSIST PLU
Sistemporarily inoperative
due to amalfunction .Adaptive Brake Assis tmay also hav efailed.
X Consult aqualified specialist workshop. Display
messages
303On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions PRE-SAFE
PRE-SAFE
inoperative See inoperative See
Owner'
sManual
Owner' sManual Importan
tfunction sofPRE-SAFE ®
hav efailed. Al lother occupant
safet ysystems ,e.g.a irbags, remain available.
X Consult aqualified specialist workshop immediately. PRE-SAFE PRE-SAFE
Functions cur‐ Functions cur‐
rently rently
limited
limited See
See
Owner' sManual
Owner' sManual PRE
‑SAFE ®
PLU SorP RE‑SAFE ®
Brake is 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 AM Gvehicles: ESP ®
is deactivated
R thes ystem is outside th eoperating temperature range
R theo n-bo ardv oltag eistoolow
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.
PRE ‑SAFE ®
PLU Sand PRE ‑SAFE®
Brake are operational 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.
X AM Gvehicles: reactivat eESP®
(Y page 85). PRE-SAFE
PRE-SAFE
Functions limited Functions limited
See Owner'
sManual
See Owner' sManual PRE
‑SAFE ®
PLU SorP RE‑SAFE ®
Brake is unavailable due to amal-
function .BAS PLU SwithC ross-Traffic Assis tmay also hav efailed.
X Consult aqualified specialist workshop. 304
Display
messagesOn-boardcomputer an ddisplays

Display messages
Possible causes/consequences and
M
MSolutions Radar sensors
Radar sensors
dirty See Owner's dirty See Owner's
Manual Manual At leas
tone of th efollowing drivin gsystems or drivin gsafet ysys-
tems is temporarily restricted or inoperative:
R COLLISION PREVENTION ASSIST PLUS
R PRE-SAFE ®
Brake
R PRE-SAFE ®
PLUS
R Active Lan eKeepin gAssist
R Active Blind Spot Assist
R DISTRONIC PLU SwithS teerin gAssista nd Stop&Go Pilot
If th erada rsensor system in fron tisdirty, Active Blind Spot Assist
will no tperform acourse-correcting brak eapplication.
Possibl ecauses:
R thes ensor sintheradiato rtrima nd/o rinthebumpers are dirty
R thef unction of th edrivin gsystem or drivin gsafet ysystem is
impaire ddue to heav yrain or snow
Aw arnin gtonea lso sounds.
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout.A lldrivin gsystems or drivin gsafet ysystems are opera-
tive 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 Switc hoffthee ngine.
X Clean th esensor s(Ypage 389) in th efollowing locations:
R in th eradiato rtrim
R in th efront bumper
R in th erear bumper, particularl yint he middle of th erear
bumper
X Restart th eengine.
The display message disappears. ü If this symbol appears in th
emultifunction display, aseat belt
tongue has been inserte dintoa rear seat belt buckle.
Further information on th estatu si nd icato rfor ther ear seat belts
(Y page 49). Display
messages
305On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions Vehicles wit
htrailer to whitch :af usem ay hav eblown.
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 Chec kthe fuses (Y page 411).
X If necessary, replac ethe blown fuse. Observ ethe warnin gnotes
as you do so.
If th edisplay message continues to be displayed:
X Consult aqualified specialist workshop. b
AUTO AUTO
lights
lights inoper‐
inoper‐
ative
ative The ligh
tsensor is faulty.
X Consult aqualified specialist workshop. b
Switch off lights Switch off lights The lights are still switched on when you leav
ethe vehicle. A
warnin gtonea lso sounds.
X Tur nthe ligh tswitch to Ã. Adaptive Highbeam
Adaptive Highbeam
Assist Plu
scur‐
Assist Plu scur‐
rently rently unavailable
unavailable
See Owner' sManual
See Owner' sManual Adaptive Highbeam Assis
tPlus is deactivated 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
X Clean th ewindscreen.
If th esystem detects that th ecamera is full yoperational again ,the
Adaptive
Adaptive Highbeam
HighbeamAssist
Assist Plus
Plusavailable
available again
againmessage
is displayed.
Adaptive Highbeam Assis tPlus is operational again. Adaptive Highbeam Adaptive Highbeam
Assist Assist
Plus
Plusinoper‐
inoper‐
ative
ative Adaptive Highbeam Assis
tPlus is faulty.
X Consult aqualified specialist workshop. 310
Display
messagesOn-boardcomputer an ddisplays

Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top Top
up
upcoolant
coolant See
See
Owner' sManual
Owner' sManual The coolant leve
listoolow.
! Avoid making lon
gjou rneys with to olittle coolant in th eengine
cooling system. The engin ewill otherwise be damaged.
X Top up th ecoolant ,observing th ewarning note sbefore doin gso
( Y page 382).
X If th ecoolant needs toppin gupmoreo ften than usual, have the
engin ecoolant system checked at aqualifie dspecialist work-
shop. ? The fan motor is faulty.
X If th ecoolant temperatur eisbelow 12 0†,you can continue
driving to th eneares tqualifie dspecialist workshop.
X Avoid putting th eengineu nde rheav yload as you do so, e.g.
driving in mountainous terrain and stop-start traffic. ?
Coolan
tStopv ehi‐
Coolan tStopv ehi‐
cle Switch engine cle Switch engine
off off The coolant is to
ohot.
Aw arning tone also sounds.
G WARNING
Never driv ewith an overheate dengine. Drivin gwhen your engine
is overheate dcan caus esom efluids whic hmay have leaked into
th ee nginec ompartmen ttocatch fire.
In addition ,steam from an overheate denginec an caus eserious
burns, whic hcan occur jus tbyopening th ebonnet.
Ther eisar isk of injury.
X Stop th evehicle immediately, paying attentio ntoroad and traf-
fic conditions, and switch off th eengine.
X Safeguard th evehicle against rolling away (Y page 205).
X Wait until th eengineh as cooled down.
X Mak esure that th eair supply to th eenginer adiator is not
blocked, e.g .byfrozenslush.
X Do no tstart th eenginea gain until th edisplay message goes out
and th ecoolant temperatur eisbelow 12 0†.The engin emay
otherwise be damaged.
X Pay attentio ntothecoolant temperatur edisplay.
X If th etem peratur eincreases again ,consult aqualifie dspecialist
workshop immediately.
Under normal operatin gcondition sand with th especified coolant
level, th ecoolant temperatur emay rise to 12 0†. Displa
ymessages
311On-boardcomputer and displays Z

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