ProblemPossible causes/consequences andMSolutions
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 173).
XDrive on with care.
XVisit a qualified specialist workshop immediately.
6 The red warning
lamp does not go
out approx-
imately 4 seconds
after the ignition
is switched on, or
it lights up again.The restraint systems have malfunctioned.
GWARNING
If the restraint systems are malfunctioning, individual systems could
be triggered inadvertently or might not be triggered at all in the event
of an accident.
There is an increased risk of injury and accidents.
XDrive on with care.
XVisit a qualified specialist workshop immediately.
# The red battery
indicator lamp is
lit while the
engine is running.The battery is not being charged. Possible causes are a defective
alternator or a torn poly-V-belt.
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XCheck the poly-V-belt.
XIf the poly-V-belt is torn: do not continue driving. Consult the near-
est qualified specialist workshop.
XIf the poly-V-belt is not damaged: have the vehicle checked as soon
as possible by a qualified specialist workshop.
#The red battery
indicator lamp is
lit while the
engine is running.The battery is faulty.
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XDo not continue driving under any circumstances.
XConsult a qualified specialist workshop.
#The yellow brake
pad wear indica-
tor lamp is lit after
the engine is star-
ted or while the
vehicle is in
motion.The brake pads/linings have reached their wear limit.
GWARNING
Braking performance can be impaired.
There is a risk of an accident.
XHave the brake pads/linings replaced as soon as possible at a
qualified specialist workshop.
194Indicator and warning lamps in the instrument cluster
On-board computer and displays
ProblemPossible causes/consequences andMSolutions
4
The yellow engine
oil level warning
lamp lights up
after the engine is
started or while
the vehicle is in
motion.The oil level has dropped to the minimum level.
XCheck the engine for oil loss.
XIf oil loss is detected: consult a qualified specialist workshop imme-
diately.
XIf no oil loss is detected: check the oil level and add engine oil
(Ypage 217).
4 The yellow warn-
ing lamp flashes
and the warning
buzzer sounds
after the engine is
started or while
the vehicle is in
motion.On vehicles with a diesel engine, the oil level display additionally
appears in the display, e.g. – 2.0 qts(Canada:– 2.0 ltr).
There is not enough or no oil in the engine.
There is a danger of engine damage.
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XCheck the oil level with the oil dipstick (Ypage 217).
XIf the engine oil level is correct: have the malfunction rectified
immediately at a qualified specialist workshop.
XIf the engine oil level is too low: have the vehicle towed to a qualified
specialist workshop.
4 The yellow engine
oil level warning
lamp lights up and
the warning buz-
zer sounds after
the engine is star-
ted or while the
vehicle is in
motion.The engine oil level is above the maximum level.
There is a risk of damaging the engine or catalytic converter.
XCheck the oil level with the oil dipstick (Ypage 217).
XIf the oil level is too high: have the engine oil extracted as soon as
possible at a qualified specialist workshop.
XIf the oil level is correct: have the malfunction rectified as soon as
possible at a qualified specialist workshop.
4 On vehicles with a
diesel engine, the
yellow warning
lamp lights up
repeatedly during
the journey.There is a malfunction in the engine oil level display.
XHave the vehicle checked immediately at a qualified specialist
workshop.
%The yellow cool-
ant level warning
lamp lights up
while the engine
is running.The coolant level is too low.
Never run the engine if the coolant level is too low. The engine could
overheat and be damaged.
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XSwitch off the engine and let it cool down.
XAdd coolant and be sure to observe the warning notes
(Ypage 218).
XIf you need to add coolant frequently, have the engine cooling sys-
tem checked at a qualified specialist workshop.
Indicator and warning lamps in the instrument cluster195
On-board computer and displays
Z
ProblemPossible causes/consequences andMSolutions
?
The red coolant
warning lamp is lit
while the engine
is running.The coolant temperature is too high.
XStop the vehicle as soon as possible, paying attention to road and
traffic conditions.
XConsult a qualified specialist workshop.
?The red coolant
warning lamp is lit
while the engine
is running.The coolant temperature is too high.
If the vehicle is stopped after being subjected to extreme loads, the
coolant warning lamp may come on when the ignition is switched on
or the engine is restarted. Such loads can be, for example, driving in
mountainous terrain or driving with a trailer.
XRun the engine for approximately 1 minute at idling speed.
XConsult a qualified specialist workshop if the display message con-
tinues to be shown.
7
|The yellow
reserve fuel warn-
ing lamp is on. At
the same time,
0
appears in the
fuel tank content
display while the
engine is running,
although there is
fuel in the fuel
tank.
The fuel filler cap is not closed.
XClose the fuel filler cap.
You will hear a click when the fuel filler cap is closed fully.
XIf the malfunction continues to be displayed, have it rectified imme-
diately at a qualified specialist workshop.
;
The yellow Check
Engine indicator
lamp is lit up or
flashes while the
engine is running.You have used up all fuel in the tank.
The engine is running in emergency mode.
XRefuel at the nearest gas station (Ypage 124).
XBleed the fuel system (Ypage 120).
XStart the engine three to four times in succession after refueling.
Emergency running mode will be canceled. The vehicle does not
need to be checked.
;The yellow Check
Engine indicator
lamp is lit up or
flashes while the
engine is running.The injection control is malfunctioning.
The engine is running in emergency mode.
Engine power output may be reduced.
XHave the vehicle checked at a qualified specialist workshop as soon
as possible.
In some states it is legally prescribed that after the Check Engine
indicator lamp lights up you must contact a qualified specialist work-
shop immediately. Observe the legal requirements.
196Indicator and warning lamps in the instrument cluster
On-board computer and displays
ProblemPossible causes/consequences andMSolutions
;
The yellow Check
Engine indicator
lamp is lit while
the engine is run-
ning.The exhaust gas aftertreatment is malfunctioning or an emission rel-
evant malfunction has occurred. This malfunction or defect can dam-
age the exhaust gas aftertreatment.
After the first message and under normal operating conditions, you
can drive on for up to approximately 500 mi (800 km). Then a warning
tone sequence sounds and the engine can only be started another 16
times.
XObserve the messages in the display.
XHave the exhaust gas aftertreatment checked immediately at a
qualified specialist workshop.
In some states it is legally prescribed that after the Check Engine
indicator lamp lights up you must contact a qualified specialist work-
shop immediately. Observe the legal requirements.
% If you turn the
SmartKey to posi-
tion2in the igni-
tion lock, the yel-
low preglow indi-
cator lamp
remains lit for
approximately
1 minute. Or the
yellow preglow
indicator lamp
lights up for
approximately
1 minute while
the engine is run-
ning.At extremely low temperatures, the engine may not start.
There is a malfunction in the preglow system.
XHave any malfunction rectified at a qualified specialist workshop.
È The yellow air fil-
ter indicator lamp
is lit while the
engine is running.The service limit for the air filter has been reached. The air filter is dirty.
XHave the air filter element replaced as soon as possible at a quali-
fied specialist workshop.
hThe 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 173).
Indicator and warning lamps in the instrument cluster197
On-board computer and displays
Z
ProblemPossible causes/consequences andMSolutions
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 220).
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 220).
7The 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 43).
bWhen the Smart-
Key is turned to
position 2in the
ignition lock, the
yellow bulb warn-
ing 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 87).
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.
198Indicator and warning lamps in the instrument cluster
On-board computer and displays
Load securing aids and tie downs may not be
used, for example, if:
Ridentification marks are missing or illegible
Rthere are yarn breakages, damage to bearingseams or other signs of tearing
Rthere are signs of shearing, deformation,
pinching or other damage
Rthere is damage to clamping or connecting
elements
Such load securing aids and tie downs are worn;
they should not be used and must be replaced. If
you use load securing aids or tie downs which
are worn, the load may not be sufficiently
secured and could cause damage to property.
After an accident, the following must be
checked at a specialist workshop:
RCargo compartment floor
RLoad surface
RCargo tie-down rings
RTie downs
Otherwise, the load may not be correctly
secured the next time anything is stowed.
Even if you follow all loading guidelines, the load
increases the risk of injury in the event of an
accident. Observe the tips in the "Securing lug-
gage/loads" (
Ypage 210) and "Load distribu-
tion" (Ypage 210) sections.
Before loading
!
The anti-slip mats cannot be used for secur-
ing goods and must be replaced when they
show signs of:
RPermanent deformation and crushing
RCrack formation
RCuts
XTire pressure: check the tire pressure and
correct if necessary (Ypage 246).
XCargo compartment floor: clean the cargo
compartment floor.
The cargo compartment floor must be free
from oil and dust, dry and swept clean to pre-
vent the load from slipping.
XPlace non-slip mats (anti-slip mats) on the
cargo compartment floor if necessary.
During loading
!
On passenger van versions with maximum
seating layout, the permissible rear axle load
would be exceeded if the full payload were to
be loaded in the cargo compartment.
XObserve the gross axle weight rating and per-
missible gross vehicle weight for your vehicle.
Take into account that your vehicle's curb
weight is increased if accessories or optional equipment are installed. The maximum pay-
load is thus reduced.
XObserve the notes on load distribution
(Ypage 210).
The overall center of gravity of the load should
always be as low as possible, centered and
between the axles near the rear axle.
XSecure the load (Ypage 210).
Observe the legal requirements of the country
in which you are currently driving.
Checks after loading
GWARNING
Combustion engines emit poisonous exhaust
gases, such as carbon monoxide. If the sliding door or rear door is open when the engine is
running, exhaust gases can enter the vehicle
interior, especially during the journey. There
is a risk of poisoning.
Always switch off the engine before opening
the sliding door or rear door. Never drive the
vehicle when the sliding door or rear door is
open.
XSecuring loads: check that the load is secure
before every journey and at regular intervals
during a long journey, and correct if neces-
sary.
XDoors: close the sliding doors and rear doors.
XTire pressure: adjust the tire pressures
according to the vehicle load (Ypage 246).
XDriving style: adapt your driving style
according to the vehicle load.
Loading guidelines209
Transporting loads
Z
Overview of the engine compartment
Example: engine
:
Coolant expansion tank cap (Ypage 218)
;DEF filler neck cap (Ypage 126)
=Engine oil filler neck cap (Ypage 216)
?Brake fluid expansion tank cap
(Ypage 219)
AWasher fluid reservoir cap (Ypage 220)
Regularly check the fluid level and the assembly
for leaks. If you detect fluid loss, e.g. oil flecks on
the vehicle parking space, consult a qualified
specialist workshop immediately.
Engine oil
General notes
!Engine oil gets dirty in the course of opera-
tion and its quality and volume are gradually
diminished. Regularly check the oil level, and
top up or have it replaced as needed.
Observe the information on engine oils and oil
consumption in the "Technical data" section
(
Ypage 277).
You can check the oil level in the engine:
Ron the display of the on-board computer
Rwith the oil dipstick
Checking the oil level shown in the dis-
play
If at extremely low temperatures no engine oil
level is displayed after 5 minutes, repeat the
engine oil level check after another 5 minutes.
If an oil level reading is still not displayed, check
the engine oil level with the dipstick
(
Ypage 217). Have the engine oil level checked
at a qualified specialist workshop. Only check the oil level when the engine is at
normal operating temperature.
XPark the vehicle on a level surface.
XSwitch off the engine.
XWait 5 minutes.
XTurn the key to position
2in the ignition lock.
The display is activated.
XVehicles without steering wheel buttons:
press the 4menu button on the instrument
cluster (
Ypage 33) repeatedly until the dis-
play shows the 1symbol.
The --:--
display message appears in the
display while the engine oil level measure-
ment is running.
XVehicles with steering wheel buttons:
press the Ëservice button on the instrument
cluster (
Ypage 33).
The 4 Engine oil level Measuring
inprogressdisplay message appears in the
display while the engine oil level measure-
ment is in progress.
Display message for vehicles without steer-
ing-wheel buttons: the display may show the
following messages after the engine oil level
measurement.
1Action
OKXDo not add oil.
– 1.0 qtsXAdd the amount of oil
shown (Ypage 218).
XCheck the engine oil level
again after a few minutes.– 1.5 qts
– 2.0 qts
HIThe oil level is too high.
XHave excess oil removed.
Measurement units in the display:
RqtsUSA only
RltrCanada only
Display message for vehicles with steering- wheel buttons: the display may show the fol-
lowing messages after the engine oil level meas-
urement.
1Action
Engineoillevel OKXDo not add oil.
216Engine compartment
Maintenance and care
EngineoilAdd1.0 quart
XAdd the amount of oil
shown (Ypage 218).
XCheck the engine oil level
again after a few minutes.
EngineoilAdd1.5quarts
EngineoilAdd2.0quarts
EngineoillevelReduceoillevel
The oil level is too high.
XHave excess oil removed.
Eng. oillev. Turnignitionon forlevel
XTurn the key to position2in
the ignition lock.
Observewait.period
XRepeat the engine oil
measurement after about
5 minutes if the engine is at
normal operating tempera-
ture.
XRepeat the engine oil
measurement after about
30 minutes if the engine is
not at normal operating
temperature.
Engineoillevel Notwhen eng.running
XSwitch off the engine when it is at normal operating
temperature and wait
approximately 5 minutes
before measuring the
engine oil level.
Measurement units in the display:
RqtsUSA only
RltrCanada only
Checking the oil level using the oil dip-
stick
Example: 4-cylinder diesel engine
Example: 6-cylinder diesel engine
For vehicles with a red oil dipstick, only check
the oil level when the engine is at normal oper-
ating temperature:
XStop your vehicle as far away from traffic as
possible on level ground.
XSecure the vehicle to prevent it from rolling
away.
XSwitch off the engine.
XWait 5 minutes.
For vehicles with a yellow oil dipstick, only check
the oil level when the engine is cold.
XStop your vehicle as far away from traffic as
possible on level ground.
XSecure the vehicle to prevent it from rolling
away.
XOpen the hood (Ypage 214).
XPull out oil dipstick :.
XWipe oil dipstick:using a lint-free cloth.
Engine compartment217
Maintenance and care
Z