trailer MERCEDES-BENZ E-CLASS SALOON 2015 Service Manual

Display messages
Possible causes/consequences and
M
MSolutions 6
Rea
rc entre mal‐
Rea rc entre mal‐
function Consult function Consult
workshop workshop The restrain
tsystem has malfunctioned at th erear centre. The
6 warnin glamp also lights up in th einstrument cluster.
G WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in th eevent of an accident, may no tbetriggered.
This poses an increase driskofi njury.
X Consult aqualified specialist workshop. 6
Left Left
windowbag
windowbag mal‐
mal‐
function Consult
function Consult
workshop workshopor Right
Right
windowbag malfunc‐
windowbag malfunc‐
tio nC onsul twork‐
tio nC onsul twork‐
shop shop The lef
torright windowbag is malfunctioning.
The 6 warnin glamp also lights up in th einstrument cluster.
G WARNING
The lef torright windowbag may either be triggered unintentionally
or, in th eevent of an accident, may no tbetriggered.
This poses an increase driskofi njury.
X Consult aqualified specialist workshop. Lights
i Vehicles wit
hLED ligh tbulbs in th eligh tclusters:
The display message fo rthe correspondin gligh twill only appea rifall theLEDsh avef ailed. Display messages
Possible causes/consequences and
M
MSolutions b
Lef
tc ornering
Lef tc ornering
light light orRight cor‐
Right cor‐
nering light
nering light The lef
torright-hand cornering ligh tisfaulty.
X Consult aqualified specialist workshop. b
Lef
td ipped beam
Lef td ipped beam
or Right dipped Right dipped
beam
beam The lef
torright-hand dipped-beam headlamp is faulty.
X Consult aqualified specialist workshop. b
Traile
rleftt ail
Traile rleftt ail
lamp lampor Trailer
Trailer
right tai llamp
right tai llamp The lef
torright-hand trailer tai llamp is faulty.
X Consult th emanufacturer' soperating instructions. Display
messages
307On-boardcomputer an ddisplays Z

Display messages
Possible causes/consequences and
M
MSolutions b
Traile
rleftt urn
Traile rleftt urn
signal signal orTrailer
Trailer
right tur nsignal
right tur nsignal The lef
torright-hand trailer tur nsignal lamp is faulty.
X Consult th emanufacturer' soperating instructions. b
Traile
rbrake lamp
Traile rbrake lamp The trailer brak
elamp is faulty.
X Consult th emanufacturer' soperating instructions. b
Rear Rear
left
leftturn
turn sig‐
sig‐
nal
nal orRea rr ight
Rea rr ight
tur ns ignal
tur ns ignal The rear left-han
dorrear right-hand tur nsignal is faulty.
X Consult aqualified specialist workshop. b
Front lef
tturn
Front lef tturn
signal signal orFront
Front
right tur nsignal
right tur nsignal The fron
tleft-han dorfrontright-hand tur nsignal is faulty.
X Chec kwhether you are permitte dtor eplac ethe bulb yourself
(Y page 150).
or
X Consult aqualified specialist workshop. b
Lef
tm irror turn
Lef tm irror turn
signal signal orRightm ir‐
Right mir‐
ror tur nsignal
ror tur nsignal The tur
nsignal in th eleft-han dorright-hand exterio rmirror is
faulty.
X Consult aqualified specialist workshop. b
Third brake lamp Third brake lamp The third brak
elamp is faulty.
X Consult aqualified specialist workshop. b
Left-hand tail Left-hand tail
lamp/brake lamp/brake
lamp lampor
Right-hand
Right-hand
tai ll amp/brake
tai ll amp/brake
lamp
lamp The lef
torright-hand tai llamp/brak elamp is faulty.
X Consult aqualified specialist workshop. b
Lef
tm ain
Lef tm ain
beam beamor Right main
Right main
beam
beam The lef
torright-hand main-beam headlamp is faulty.
X Chec kwhether you are permitte dtor eplac ethe bulb yourself
(Y page 150).
or
X Consult aqualified specialist workshop. 308
Display
messagesOn-boardcomputer an ddisplays

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

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 j
Check trailer Check trailer
hitch lock hitch lock The trailer to
whitch is no tcorrectly engaged.
Aw arnin gtonea lso sounds.
G WARNING
If th eball couplin gisnotengaged, th etrailer may come loose.
There is ariskofana ccident.
X Stop th evehicl eimmediately, payin gattention to roa dand traf-
fic conditions, and switch of fthe engine.
X Apply th eparkin gbrake.
X Engage th etrailer coupling's ball couplin gintheendp osition
(Y page 268). &
inoperative Bat‐ inoperative Bat‐
ter
yl ow
ter yl ow th
eo n-bo ardv oltag eistoolow The auxiliar yheatin ghas switched
itself of forcannotbes witched on (Y page 168).
X Drive fo raconsid erable distance.
The battery charges. The auxiliar yheatin gisoperational again as
soo nast heon-boar delectrica lsystem voltag eissufficient. &
inoperative inoperative
Refuel
Refuel
vehicle
vehicle There is to
olittl efue lint hefuel tank. The auxiliar yheatin gcannot
be switched on (Y page 168).
X Refuel at th eneares tfillin gstation. &
inoperative See inoperative See
Owner'
sMan.
Owner' sMan. The auxiliar
yheatin gistemporarily malfunctionin gorfaulty.
X Whe nthe vehicl eisonal evel surfac eand th eengineh as cooled
down ,makeuptof oura ttempts to switch on th eauxiliar yheat-
ing, waitin gseveral minute sbetween eac hattempt
(Y page 168).
X If th eauxiliar yheatin gdoes no tswitch on ,consu ltaq ualified
specialist workshop. Ð
Power Power
steering
steering mal‐
mal‐
function See Own‐
function See Own‐
er' sM anual
er' sM anual The powe
rsteerin gassistanc eisfaulty.
Aw arnin gtonea lso sounds.
G WARNING
You will need to use mor eforce to steer.
There is ariskofana ccident.
X Chec kwhether you are able to apply th eextra forcerequired.
X If you ar eabletos teer safely: carefully drive on to aqualified
specialist workshop.
X If you ar eunable to steer safely: do notdrive on .Contac tthe
neares tqualified specialist workshop. Display
messages
327On-boardcomputer an ddisplays Z

Problem
Possible causes/consequences and
M
MSolutions !
The yellowA
BS warning
lamp is lit while the
engine is running. ABS (Anti-lock Braking System) has been deactivated due to a
fault. Therefore, BAS (Brake Assist System), BAS PLUS with Cross-
Traffic Assist, COLLISION PREVENTION ASSIST PLUS, ESP ®
(Elec-
tronic Stability Program), PRE‑ SAFE®
,P RE‑SAFE ®
PLUS,
PRE‑SAFE ®
Brake, the HOLD function, hill start assist, ESP ®
trailer
stabilisation and the adaptive brake lights, for example, are also
deactivated.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Consult aqualified specialist workshop.
If the ABS control unit is faulty, there is also apossibility that other
systems, such as the navigation system or the automatic trans-
mission, will be unavailable. 332
Warning and indicator lampsint
he instrument clusterOn-board computer and displays

Problem
Possible causes/consequences and
M
MSolutions !
The yellowA
BS warning
lamp is lit while the
engine is running. A
warning tone also
sounds. EBD is unavailable due to
amalfunction .Therefore, ABS,B AS,BAS
PLUS with Cross-Traffic Assist, COLLISION PREVENTION ASSIST
PLUS, ESP ®
,P RE-SAFE ®
,P RE-SAFE ®
PLUS, PRE‑SAFE ®
Brake, the
HOLD function, hill start assist, ESP ®
trailer stabilisation and the
adaptive brake lights, for example, are also unavailable.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The front and rear wheels could therefore
lock, for example, if you brake hard.
The steerability and braking characteristics may be severely affec-ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Consult aqualified specialist workshop. J
֌!
The red brake warning
lamp, the yellow ESP ®
and ESP ®
OFF warning
lamps and the yellow
ABS warning lamp are
lit while the engine is
running. ABS and ESP
®
are unavailabl edue to afault. Therefore, ABS,B AS,
BAS PLUS with Cross-Traffic Assist ,COLLISION PREVENTION
ASSIST PLUS, EBD,P RE-SAFE®
,P RE-SAFE ®
PLUS, PRE‑SA FE®
Brake, the HOLD function, hill start assist, ESP ®
trailer stabilisa-
tion and the adaptive brake lights, for example, are also unavail-
able.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The fronta nd rear wheels could therefore
lock, for example, if you brake hard.
The steerability and braking characteristics may be severely affec- ted. The braking distanc emay increase in an emergenc ybraking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Consult aqualified specialist workshop. Warning and indicator lampsint
he instrument cluster
333On-board computer and displays Z

Problem
Possible causes/consequences and
M
MSolutions ֌
The yellow ESP
®
and
ESP ®
OFF warning
lamps are lit while the
engine is running. ESP
®
,B AS ,BAS PLUS with Cross-Traffic Assist ,COLLISION PRE-
VENTION ASSIST PLUS, PRE-SAFE ®
,P RE-SAFE ®
PLUS,
PRE‑SA FE®
Brake, the HOLD function, hill start assist, ESP ®
trailer
stabilisation and the adaptive brake lights are unavailabl edue to a
malfunction.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distanc emay thus increase in an emergenc ybraking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Consult aqualified specialist workshop. 6
The red restraint sys-
tem warning lamp is lit
while the engine is run-
ning.
The restraint system is faulty.
G WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident ,may not be triggered.
This poses an increased risk of injury.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Have the restraint system checked immediately at aqualified
specialist workshop.
Observe the additional information on the restraint system
(Y page 44). Warning and indicator lampsint
he instrument cluster
335On-board computer and displays Z

!
Please note the care instructions in the
trailer coupling manufacturer's operating
instructions. The ball coupling must be cleaned if it
becomes dirty or corroded.
X Remove rust, e.g. with awire brush.
X Remove dirt with aclean, lint-free cloth or a
brush.
X After cleaning, lightly oil or grease ball cou-
pling :.
X Check that the vehicle's trailer tow hitch is
working properly.
i You can also have the maintenance work
on the ball coupling and the trailer tow hitch
carried out by aqualified specialist work-
shop. Interior care
Cleaning the display !
For cleaning, do not use any of the fol-
lowing:
R alcohol-based thinner or petrol
R abrasive cleaning agents
R commercially-available householdc lean-
ing agents
These may damage the displays urface. Do
not put pressure on the displays urface
when cleaning. This could lead to irrepara-
ble damage to the display. X
Before cleaning the display, make sure that
it is switched off and has cooled down.
X Cleant he displays urface using acommer-
cially available microfibre cloth and
TFT/LCD displayc leaner.
X Dry the displays urface usingadry micro-
fibre cloth.
Cleaning the plastic trim G
WARNING
Care products and cleaning agents containing solvents can cause surfaces in the cockpit to
become porous. This could result in plastic
parts breaking awayw hen the airbags are
deployed. There is adanger of injury.
Do not use care products and cleaning agents containing solvents to clean the cockpit.
! Do not affix the following to plastic surfa-
ces:
R stickers
R films
R scented oil bottles or similari tems
You could otherwise damage the plastic.
! Do not allowc
osmetics, insect repellent
or sunscreen to come in contact with the
plastic trim. This maintains the high-quality look of the surfaces.
X Wipe the plastic trim with adamp, lint-free
cloth, e.g. amicrofibre cloth.
X Heavy soiling: use car care and cleaning
products recommended and approved by
Mercedes-Benz.
The surface may change colour tempora-
rily. Wait until the surface is dry again.
Cleaning the steering wheela nd gear or
selector lever X
Thoroughlyw ipe withadamp cloth or use
leather care agents that have been recom-
mended and approved by Mercedes-Benz. Care
391Maintenance and care Z

Position number
Bidentifies the charged batter yofthe other vehicle or an equivalent jump-
starting device.
X Slide cover :of positive terminal ;in the direction of the arrow.
X Connec tpositive terminal ;on your vehicle to positive terminal =of donor battery B
using the jump lead, alway sbeginnin gwith positive terminal ;on your own vehicle first.
X Start the engine of the donor vehicle and run it at idling speed.
X Connec tnegative terminal ?of donor battery Bto earth point Aof your vehicle using the
jump lead, connectin gthe jump lead to donor battery Bfirst.
X Start the engine.
X Before disconnectin gthe jump leads, let the engines run for several minutes.
X First ,remove the jump leads from earth point Aand negative terminal ?,then from pos-
itive clamp ;and positive terminal =.Begin each time at the contacts on your own vehicle
first.
X Close cover :of positive clamp ;after removin gthe jump leads.
X Have the batter ychecked at aqualified specialist workshop.
i Jump-starting is not considered to be
anormal operating condition.
i Jump-starting cables and further information regarding jump starting can be obtained at
any qualified specialist workshop. Towing away and tow-starting
Important safety notes
G
WARNING
Safety-relevant functions are restricted or not
availabl eif:
R the engine is not running.
R the brake system or the power steerin gis
malfunctioning
R the voltage supply or the vehicle's electrical
system is malfunctioning.
If your vehicle is towed, significantly greater
force may be required to steer the vehicle or
to brake. There is arisk of an accident.
In such circumstances, use atowing bar.
Make sure that the steerin gismoving freely
before towing. G
WARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible gross weight of your vehicle, the:
R towing eye may be torn off
R car/trailer combination may swerve or
even overturn
There is arisk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of your vehicle.
i Details on the permissible gross vehicle
weight of your vehicle can be found on the
vehicle identification plate (Y page 472).
! When DISTRONIC PLUS or the HOLD
function is activated, the vehicle brakes
automatically in certain situations.
To avoid damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in the following or similar situations:
R when towing away
R in ac ar wash Towing away and tow-starting
407Breakdown assistance Z