
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

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

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

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS (Anti-lock Braking System) is deactivated due to a malfunc-
tion. Therefore, BAS (Brake Assist System), BAS PLUS with Cross-
Traffic Assist, COLLISION PREVENTION ASSIST PLUS, ESP
®(Elec-
tronic Stability Program), PRE‑ SAFE®, PRE‑SAFE®PLUS,
PRE‑SAFE®Brake, the HOLD function and hill start assist, for
example, are also deactivated.
ATTENTION ASSIST is deactivated.
GWARNING
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 in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic trans-
mission, will not be available.
Warning and indicator lamps in the instrument cluster205
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.EBD is not available due to a malfunction. Therefore, ABS, BAS,
BAS PLUS with Cross-Traffic Assist, COLLISION PREVENTION
ASSIST PLUS, ESP
®, PRE‑SAFE®, PRE‑SAFE®PLUS, PRE‑SAFE®
Brake, the HOLD function and hill start assist, for example, are also
unavailable.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
$ (USA only)
J (Canada only)
֌!
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 not available due to a malfunction. Therefore,
BAS, BAS PLUS with Cross-Traffic Assist, COLLISION PREVEN-
TION ASSIST PLUS, EBD, PRE ‑SAFE
®, PRE‑SAFE®PLUS,
PRE‑SAFE®Brake, the HOLD function and hill start assist, for
example, are also unavailable.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
206Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
֌
The yellow ESP
®and
ESP®OFF warning
lamps are lit while the
engine is running.
ESP®, BAS, BAS PLUS with Cross-Traffic Assist, COLLISION PRE-
VENTION ASSIST PLUS, PRE ‑SAFE®, PRE‑SAFE®PLUS,
PRE‑SAFE®Brake, the HOLD function and hill start assist are
unavailable due to a malfunction.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
6
The red restraint sys-
tem warning lamp is lit
while the engine is run-
ning.The restraint system is faulty.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XHave the restraint system checked immediately at a qualified
specialist workshop.
Observe the additional information on restraint systems
(
Ypage 48).
208Warning and indicator lamps in the instrument cluster
On-board computer and displays

Engine
ProblemPossible causes/consequences andMSolutions
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coolant level may
be too low.
GWARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
XObserve the additional display messages in the multifunction
display.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 151).
XLeave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
XCheck the coolant level and add coolant, observing the warning
notes (
Ypage 265).
XIf you need to add coolant more often than usual, have the
engine coolant system checked.
XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
XAt coolant temperatures below 248 ‡(120†) ,dr ive to the
nearest qualified specialist workshop.
XAvoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain
, and stop-and-go traffic.
Warning and indicator lamps in the instrument cluster209
On-board computer and displays
Z