ECU MERCEDES-BENZ WAGON 2016 Owner's Guide

Display messagesPossible causes/consequences andMSolutions
T!
÷
Inoperative See
Operator'sManual
EB D(electronic brak eforc edistribution), ABS, ES P®,BAS, th e
HOLD function ,PRE-SAF E®and hill start assist are no tavailable
due to amalfunction .
BA SPLU Swit hCross-Traffic Assist, COLLISION PREVENTION
ASSIST PLUS, PRE‑ SAFE
®PLU Sand PRE ‑SAFE®Brake may also
hav efailed.
In addition ,th e÷, åand! warnin glamp sligh tup in th e
instrumen tcluster and awarnin gtone sounds.
GWARNIN G
The brakesystem continues to function normally, but without th e
function slisted above. The fron tand rear wheels could therefore
loc kif you brak ehard, fo rexample.
The steerabilit yand brakin gcharacteristics may be severely affec -
ted. The brakin gdistanc ein an emergenc ybrakin gsituation can
increase .
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increase dris kof skiddin gand an accident.
XDrive on carefully.
XVisit aqualified specialist workshop immediately.
$(USA
only)
J(Canada
only)
Check Brake Fluid
Level
There is no tenough brak eflui din th ebrak eflui dreservoir .
In addition ,th e$ (USAonly) or J(Canada only) warnin g
lamp lights up in th einstrumen tcluster and awarnin gtone
sounds.
GWARNIN G
The brakin geffec tmay be impaired.
There is aris kof an accident.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions. Do no tcontinue drivin g
under any circumstances.
XSecur eth evehicl eagainst rollin gaway (Ypage 151).
XConsult aqualified specialist workshop .
XDo notadd brak efluid. This does no tcorrec tth emalfunction .
194Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
6
LeftSid eCurtai n
AirbagMalfunction
ServiceRequired
or Right Sid eCur ‐
tainAirbag Mal ‐
function Servic e
Required
There isamalfunction in th eleft-han dor right-hand window cur -
tai nair bag.
The 6 warnin glamp also lights up in th einstrumen tcluster.
GWARNIN G
The leftor right window curtai nair bag may either be triggered
unintentionally or, in th eevent of an accident, may no tbe trig-
gered.
There is an increase dris kof injury.
XVisit aqualified specialist workshop .
196Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Front Passenger
Airbag Disabled
SeeOperator'sMan‐
ual
The front-passenger air bag is deactivated during th ejourney, eve n
though :
Ran adult
or
Raperson of th ecorrespondin gstature is on th efront-passenger
seat
If additional forces are applied to th eseat ,th esystem may inter-
pre tth eoccupant's weight as lowe rthan it actually is.
GWARNIN G
The front-passenger air bag does no tdeploy during an accident.
There is an increase dris kof injury.
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 151).
XSwitchth eignition off.
XHav eth eoccupant get out of th evehicle.
XKee pth eseat unoccupied ,close th efront-passenger doo rand
switch on th eignition .
XObserveth ePASSENGER AI RBA GOF Findicato rlamp in th e
center console and th emultifunction display and chec kth efol-
lowing:
Seat unoccupied and ignition switched on :
RthePASSENGER AI RBA GOF Findicato rlamp mus tthen ligh t
up and remain lit .If th eindicato rlamp is on ,OCS has disabled
th efront-passenger fron tair bag (
Ypage 58 )
RtheFrontPassengerAirbagEnable dSeeOperator' s
ManualorFrontPassengerAirbagDisabledSeeOper‐
ator's Manualdisplay message smus tno tbe shown in th e
multifunction display
XWait fo r aperiod of at leas t60 seconds until th enecessar ysys-
te m checks hav ebeen completed.
XMak esur ethat th edisplay message sdo no tappea rin th emul-
tifunction display.
If these condition sare 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.
Display messages19 7
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Observeth eadditional information on OCS (Ypage 58).
Front Passenger
Airbag Enable d
SeeOperator'sMan‐
ual
The front-passenger air bag is enabled during th ejourney, eve n
though :
Rachild, asmall adult or an objec tweighin gless than th esys-
tem' sweight threshold is locate don th efront-passenger seat
or
Rth efront-passenger seat is unoccupied
The system may detec tobjects or forces applying additional
weight on th eseat .
GWARNIN G
The air bag may deploy unintentionally.
There is an increase dris kof injury.
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 151).
XSwitchth eignition off.
XOpe nth efront-passenger door.
XRemove th echild and th echild restrain tsystem from th efront-
passenger seat .
XMakesur ethat there are no objects on th eseat addin gto th e
weight .
The system may otherwise detec tth eadditional weight and
interpret th eseat occupant's weight as greate rthan it actually
is.
XKee pth eseat unoccupied ,close th efront-passenger doo rand
switch on th eignition .
XObserveth ePASSENGER AI RBA GOF Findicato rlamp in th e
center console and th emultifunction display and chec kth efol-
lowing:
Sea
t unoccupied and ignition switched on :
RthePASSENGER AI RBA GOF Findicato rlamp mus tthen ligh tup
and remain lit .If th eindicato rlamp is on ,OCS (Occupant Clas-
sification System) has disabled th efront-passenger fron tair bag
(
Ypage 58 )
RtheFront Passenger Airbag Enable dSee Operator' s
ManualorFront Passenger Airbag Disabled See Oper‐
ator's Manualdisplay message smus tno tbe shown in th e
multifunction display
198Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
XWait for aperiod of at leas t60 seconds until th enecessar ysys-
te m checks hav ebeen completed.
XMak esur ethat th edisplay message sdo no tappea rin th emul-
tifunction display.
If these condition sare 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.
Observ eth eadditional information on OCS (
Ypage 58).
Engine
Display messagesPossible causes/consequences and MSolutions
?
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 151).
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†).
Display messages19 9
On-board computer and displays
Z

Tires
Display messagesPossible causes/consequences andMSolutions
Check
Tires
The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
GWARNING
With tire pressures which are too low, there is a risk of the fol-
lowing hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 151).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (
Ypage 271).
XCheck the tire pressure (Ypage 294).
XIf necessary, correct the tire pressure.
Warning
Tire Malfunction
The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
GWARNING
If you drive with a flat tire, there is a risk of the following hazards:
Ra flat tire affects the ability to steer or brake the vehicle.
Ryou could lose control of the vehicle.
Rcontinued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 151).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (
Ypage 271).
200Displa y messages
On-board computer and displays

Vehicle
Display messagesPossible causes/consequences andMSolutions
Risk of Rolling
Away
Vehicle Not in 'P'
The driver's door is open or not fully closed and the selector lever
is in positionR,N or D.
A warning tone also sounds.
GWARNING
The vehicle may roll away.
There is a risk of an accident.
XShift the selector lever to position P.
XSecure the vehicle against rolling away (Ypage 151).
XClose the driver's door completely.
AWagon: the tailgate is open.
GWARNING
When the engine is running, exhaust gases can enter the vehicle
interior if the tailgate is open.
There is a risk of poisoning.
XClose the tailgate.
MThe hood is open. A warning tone also sounds.
GWARNING
The open hood may block your view when the vehicle is in motion.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 151).
XClose the hood.
Ð
PowerSteeringMal‐
function See Oper‐
ator's Manual
The power steering is malfunctioning.
A warning tone also sounds.
GWARNING
You will need to use more force to steer.
There is a risk of an accident.
XCheck whether you are able to apply the extra force required.
XIf you are able to steer safely:carefully drive on to a qualified
specialist workshop.
XIf you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop.
Display messages201
On-board computer and displays
Z

Warning and indicator lamps in the instrument cluster
General notes
This section describes indicator and warning lamps in the instrument cluster relevant to safety
and solutions. A description of other indicator and warning lamps in the instrument cluster and
their solutions can be found in the Digital Operator's Manual.
Some systems carry out a self-diagnosis when the ignition is switched on. Therefore, some
indicator and warning lamps may light up or flash temporarily. This behavior is non-critical.
These indicator and warning lamps only indicate a malfunction if they light up or flash after
starting the engine or whilst driving.
Safety
Seat belts
ProblemPossible causes/consequences and MSolutions
ü
After starting the
engine, the red seat
belt warning lamp lights
up for 6 seconds.The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
XFasten your seat belt (Ypage 52).
ü
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a warn-
ing tone sounds for up
to 6 seconds.The driver's seat belt is not fastened.
XFasten your seat belt (Ypage 52).
The warning tone ceases.
ü
The red seat belt warn-
ing lamp lights up after
the engine starts, as
soon as the driver's or
the front-passenger
door is closed.The driver or front passenger has not fastened their seat belt.
XFasten your seat belt (Ypage 52).
The warning lamp goes out.
There are objects on the front-passenger seat.
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out.
202Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
ü
The red seat belt warn-
ing lamp flashes and an
intermittent audible
warning sounds.The driver or front passenger has not fastened their seat belt. The
vehicle is being driven faster than 15 mph (25 km/h) or has briefly
been driven faster than 15 mph (25 km/h).
XFasten your seat belt (Ypage 52).
The warning lamp goes out and the intermittent warning tone
ceases.
There are objects on the front-passenger seat. The vehicle is being
driven faster than 15 mph (25 km/h) or has briefly been driven
faster than 15 mph (25 km/h).
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases.
Warning and indicator lamps in the instrument cluster203
On-board computer and displays
Z

Safety systems
ProblemPossible causes/consequences andMSolutions
$(USA only)
J (Canada only)
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.GWARNING
The brake boosting effect is malfunctioning and the braking char-
acteristics may be affected.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 151).
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
$ (USA only)
J (Canada only)
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.GWARNING
There is not enough brake fluid in the brake fluid reservoir.
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 151).
XDo not add brake fluid. Adding more will not remedy the mal-
function.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
204Warning and indicator lamps in the instrument cluster
On-board computer and displays