
Display messages on vehicles withoutsteering wheel buttons
Display messagesPossible causes/consequences an dMSolutions
_ _ _
V
The activation condition sfo rcruise contro lhav eno tbee nmet .
You can only activat ecruise contro lfrom speeds of 20 mph
(30 km/h).
or
Cruise contro lhas bee ndeactivated due to amalfunction .
XHavecruise contro lchecke dat aqualified specialis tworkshop .
NO TPMSTheNOmessag eis displaye dfo r30 seconds. The TPMSmessag eis also
displaye dafter 30 seconds.
The tire pressure monito rhas malfunctioned.
XHav eth etire pressure monito rand th ewheels checke dat aquali-
fie dspecialis tworkshop .
NO TPMSTheNOmessag eis displaye dfo r30 seconds. The TPMSmessag eis also
displaye dafter 30 seconds.
The tire pressure monito ris no treceivin gsignal sfrom on eor more
wheels because :
Rawhee lhas bee nreplaced wit hth espar ewhee lwithout whee l
electronics.
Rth emaximum temperature on on eof th ewhee lelectronic sunits has
bee nexceeded.
Rth ewhee lelectronic sare malfunctioning.
XHav ewheels wit hsuitable whee lelectronic sunits installed at a
qualified specialis tworkshop .
— —TPMSThe — —messag eis displaye dfo r30 seconds. The TPMSmessag eis
also displaye dafter 30 seconds.
The pressure is insufficien tin on eor more tires ,or th epressures of th e
individual tires diffe rsignificantly.
XChec kth etire pressure and correc tit if necessary (Ypage 253).
dEF ChkIn addition,th eyello wå DEFindicator lamp lights up in th einstru-
men tcluster and awarnin gtone sounds.
The DE Fsupply has dropped belo w1.5US gal (5.5l).
XAdd DEF supply (Ypage 129).
The å DEF indicator lamp only disappears when the vehicle is
stationary, at the latest after 20 secondsa s soon as you switch on
the ignition or start the engine after refueling.
In addition, the yellow ;Check Engine indicator lamp and the yel-
low å DEF indicator lamp light up in the instrument cluster and a
warning tone sounds.
The DEF reducing agent is contaminated, diluted or is not compliant
with ISO 22241.
XHave the DEF tank cleaned and refilled at a qualified specialist
workshop as soon as possible.
178Display messages
On-board computer and displays

Display messages on vehicles withsteering wheel buttons
Safet ysystems
Display messagesPossible causes/consequences an dMSolutions
ABS
Visit workshop
AB Shas bee ndeactivated due to amalfunction .ES P®,AS Rand BAS,
as well as cruise control, hav ealso bee ndeactivated as aresult .
GWARNING
The brake syste mcontinues to function normally, but without th e
function slisted above. The wheels could therefore loc kif you brake
hard, fo rexample.
Thi scauses steerability and braking to be greatly impaired. The brak-
in gdistanc ecan increase in emergency braking situations. The driven
wheels can spi nwhen accelerating.
If ES P
®is no toperational, ES P®will notstabilize th evehicle.
There is an increase dris kof skidding and accidents .
XDrive on withcare.
XVisit aqualified specialis tworkshop immediately.
ABS
Unavailable
AB Sis temporarily unavailable or is deactivated due to undervoltage.
ES P®,AS Rand BAS, as well as cruise control, are also unavailable as
a result .
The battery may no tbe bein gcharged.
GWARNING
The brake syste mcontinues to function normally, but without th e
function slisted above. The wheels could therefore loc kif you brake
hard, fo rexample.
Thi scauses steerability and braking to be greatly impaired. The brak-
in gdistanc ecan increase in emergency braking situations. The driven
wheels can spi nwhen accelerating.
If ES P
®is no toperational, ES P®will notstabilize th evehicle.
There is an increase dris kof skidding and accidents .
XDrive for ashort distanc eat aspeed of more than 13 mph
(20 km/h).
If th edisplay messag edisappears ,th efunction smentioned abov e
are available again .
If th edisplay messag econtinues to be displayed:
XDrive on wit hcare.
XVisit aqualified specialis tworkshop immediately.
Display messages18 1
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Check tire(s)
O
The pressureof on eor mor etires has dropped significantly. If th etire
pressur emonitor has detecte dth eaffecte dwheel, th ewhee lposition
is also displayed.
XStop th evehicl eas soo nas possible, payin gattention to roa dand
traffic conditions.
XChec kth etires .
XRepair or chang eth ewhee lif necessar y (Ypage 266).
XCheckth etire pressur eand correc tit if necessar y (Ypage 253).
The display message disappear sautomatically after drivin gfor a
few minute swit hth ecorrecte dtire pressure.
Warnin gTir edefect
O
On eor mor etires is losing air rapidly. If th etire pressur emonitor has
detecte dth eaffecte dwheel, th ewhee lposition is also displayed.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers ,payin gattention to th etraffic condition sas you do so.
XRepair or chang eth ewhee l (Ypage 266).
Vehicle
Display messagesPossible causes/consequences and MSolutions
Ð
SteeringAssistanceFailure
The powe rassistanc efor th esteering has malfunctioned. You need to
steer mor eforcefully.
XCarefully continu eto aqualified specialist workshop and hav eth e
steering checke dimmediately.
#
Battery/AlternatorVisit workshop
The battery is no tbein gcharged. Possibl ecauses are adefective
alternato ror atorn poly-V-belt .
XStop thevehicl eas soo nas possible, payin gattention to roa dand
traffic conditions.
XChec kth epoly-V-belt .
XIf thepoly-V-belt is torn :do no tcontinu edriving. Consult aqualified
specialist workshop .
XIf thepoly-V-belt is no tdamaged: hav eth evehicl echecke das soo n
as possibl eby aqualified specialist workshop .
÷
Electrically oper‐atedste p
The electrical step has retracte dor extended only partially or no tat all.
XMak esur ethere is sufficien tfree spac efor th eelectrical step.
XOpe nor close th esliding door again .
XIf theelectrical step still does no textend or retrac tfully, push th e
step in manually (Ypage 67). Beforestepping out ,remind th epas-
senger sthat th estep is missing.
1
Hoo dope n
You are already drivin gat walking pace, eve nthough th ehoo dis no t
closed .
XCloseth ehood.
192Display messages
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
h!:b
The yellow ESP®, ABS
and ASR/BAS indicator
lamps and the red brake
system indicator lamp
are lit while the engine is
running.
EBD is malfunctioning or deactivated due to undervoltage or malfunc-
tion.
The battery may not be being charged.
GWARNING
The rear wheels could lock sooner than expected when you apply the
brakes. The braking distance can increase in emergency braking sit-
uations.
There is an increased risk of skidding and accidents.
XVehicles with steering wheel buttons: also observe the messages in
the display (Ypage 176).
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XDo not drive on.
XConsult a qualified specialist workshop.
b The red brake sys-
tem indicator
lamp is lit while
the engine is run-
ning.There is insufficient brake fluid in the expansion tank.
GWARNING
Braking performance can be impaired.
There is a risk of an accident.
XVehicles with steering wheel buttons: also observe the messages in
the display (Ypage 176).
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XCheck the brake fluid level in the expansion tank (Ypage 223).
XIf the brake fluid is below the MIN mark: do not drive on!
XDo not add brake fluid. This does not solve the problem.
XConsult a qualified specialist workshop.
b When towing a
trailer: the red
brake system
indicator lamp is
lit while the
engine is running.
Additionally, a
warning tone
sounds.GWARNING
The brake force booster in the trailer is faulty.
The driving and braking characteristics of your vehicle could change.
There is a risk of the trailer overbraking and of you losing control over
the truck/trailer combination.
There is a risk of an accident.
XVehicles with steering wheel buttons: also observe the messages in
the display (Ypage 176).
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XDo not drive on.
XConsult a qualified specialist workshop.
Indicator and warning lamps in the instrument cluster195
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS
indicator lamp is
lit while the
engine is running.ABS is deactivated due to a malfunction or is temporarily unavailable.
ESP®, ASR and BAS, as well as cruise control, are also unavailable as
a result.
Self-diagnosis may not be complete, or the battery may not be charg-
ing.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock, e.g. if the
brakes are applied with maximum force.
This causes steerability and braking to be greatly impaired.
The braking distance can increase in emergency braking situations.
The driven wheels can spin when accelerating.
If ESP
®is not operational, ESP®will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
XDrive a short distance at a speed above 13 mph (20 km/h).
The functions mentioned above are available again when the indi-
cator lamp goes out.
If the indicator lamp does not go out:
XDrive on with care.
XVisit a qualified specialist workshop immediately.
å The yellow DEF
indicator lamp is
lit while the
engine is running.The exhaust gas aftertreatment is malfunctioning or the current Diesel
Exhaust Fluid (DEF) supply is limiting the vehicle range.
XObserve the messages in the display.
h
The yellow ESP®
indicator lamp is
lit while the
engine is running.ESP®is deactivated due to undervoltage or a malfunction. As a result,
cruise control has also been deactivated.
Engine power output may be reduced.
The battery may not be being charged.
GWARNING
If ESP
®is not operational, ESP®will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
XVehicles with steering wheel buttons: also observe the messages in the display (Ypage 176).
XDrive on with care.
XVisit a qualified specialist workshop immediately.
Indicator and warning lamps in the instrument cluster197
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
h
The yellow tire
pressure monitor
warning lamp
comes on.GWARNING
The tire pressure monitor indicates a rapid or severe loss of pressure
in at least one tire.
XStop the vehicle without making any extreme steering maneuvers or
braking suddenly. Pay attention to the traffic conditions while doing
so.
XCheck the tires and correct the tire pressure. If a tire continues to
lose pressure, it must be replaced. Replace damaged tires imme-
diately.
The warning light will go out after the flat tire has been rectified and
you have been driving for a few minutes.
XVehicles with steering wheel buttons: also observe the messages in the display (Ypage 176).
h US vehicles only:
The yellow tire
pressure monitor
warning lamp
flashes for
60 seconds and
then remains lit.The tire pressure monitor has malfunctioned.
XHave the tire pressure monitor and the wheels checked at a quali-
fied specialist workshop.
:
The yellow water
separator indica-
tor lamp is lit
when the ignition
is switched on.The water that has collected in the water separator of the fuel filter has
reached the maximum level.
XDrain the water separator (Ypage 224).
m
The yellow water
separator indica-
tor lamp is lit
when the ignition
is switched on.The fuel filter is dirty.
XHave the fuel filter element replaced as soon as possible at a quali-
fied specialist workshop.
¦The yellow
washer fluid level
indicator lamp for
the windshield
washer/head-
lamp cleaning
system is lit after
the engine is star-
ted or while the
vehicle is in
motion.The water level is too low.
XAdd washer fluid (Ypage 224).
202Indicator and warning lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
7
The red seat belt
warning lamp
lights up continu-
ously or flashes. A
warning tone may
also sound.The warning lamp is to remind you to fasten your seat belt.
XFasten seat belt (Ypage 42).
bWhen the key is
turned to position
2in the ignition
lock, the yellow
bulb warning
lamp lights up.One of the exterior lighting bulbs is faulty, with the exception of the
perimeter lamps and the trailer lighting.
iDepending on the equipment, the bulb failure indicator can fail for
all lamps with the exception of the turn signal lamps.
XReplace the faulty bulb as soon as possible (Ypage 86).
1 The yellow "door
open" indicator
lamp is lit while
driving.The vehicle is moving without all doors or the hood being closed.
XClose the doors or hood.
1The yellow "door
open" indicator
lamp is lit.The electrical step has retracted or extended only partially or not at all.
XMake sure there is sufficient free space for the electrical step.
XOpen or close the sliding door again.
XIf the electrical step still does not extend or retract fully, push the
step in manually (Ypage 67). Before stepping out, remind the pas-
sengers that the step is missing.
Ð The indicator
lamp for the
steering is lit
when the ignition
is switched on.The power assistance for the steering has malfunctioned. You need to
steer more forcefully.
XCarefully continue to a qualified specialist workshop and have the
steering checked immediately.
Indicator and warning lamps in the instrument cluster203
On-board computer and displays
Z

Useful information
This Operator's Manual describes all models as
well as standard and optional equipment of your
vehicle that were available at the time of going
to print. Country-specific variations are possi-
ble. Note that your vehicle may not be equipped
with all of the described functions. This also
applies to systems and functions relevant to
safety.
Read the information on qualified specialist
workshops (
Ypage 26).
Loading guidelines
Important safety notes
GWARNING
As a result of improperly placed or unevenly
distributed loads, the center of gravity of the
load being transported may be too high or too
far back. This can significantly impair handling
as well as steering and braking characteris-
tics. There is a risk of an accident.
Always make sure that the center of gravity of
the load is:
Rbetween the axles
and
Ras low as possible, near the rear axle.
GWARNING
When objects are unsecured or inadequately
secured, they can slip, turn over or be thrown
about, striking vehicle occupants. This also
applies to:
Rluggage or loads
Ra rear bench seat which has been removed
and is being transported in the vehicle in an
exceptional case.
There is a risk of injury, particularly in the
event of braking maneuvers or abrupt
changes in direction.
Always stow objects in such a way that they
cannot be tossed about. Before traveling,
secure objects, luggage or loads to prevent
them slipping or tipping over. If you remove a
rear bench seat, it is advisable to store it out- side the vehicle.
GWARNING
When the permissible wheel loads, axle loads
and/or the maximum permissible gross vehi-
cle weight are exceeded, driving safety is
compromised. The handling as well as steer-
ing and braking characteristics may be signif-
icantly impaired. Overloaded tires may over-
heat, causing them to burst. There is a risk of
an accident.
When transporting a load, always observe the
permissible wheel loads, axle loads and the
maximum permissible gross vehicle weight
for the vehicle (including occupants).
GWARNING
When you load the roof, the center of gravity
of the vehicle rises and the driving character-
istics change. If you exceed the maximum roof
load, the driving characteristics, as well as
steering and braking, will be greatly impaired.
There is a risk of an accident.
Never exceed the maximum roof load and
adjust your driving style.
!If you are using a roof carrier, observe the
maximum roof load and maximum roof carrier
load.
You will find information about the maximum
roof load in the "Technical data" section
(
Ypage 286) and information about roof carri-
ers in the "Carrier systems" section
(
Ypage 216).
RDo not stack luggage or loads higher than the
backrests.
RStow objects preferably in the cargo com-
partment.
RWhen transporting luggage, always use the
cargo tie-down rings and a parcel net, if pres-
ent.
RUse cargo tie-down rings and fasteners which
are suitable for the weight and size of the
load.
Always observe the operating instructions of the respective manufacturer when using suitable
load securing aids or tie downs. In particular, the
information on service life.
212Loading guidelines
Transporting loads