Problem Possible causes/consequences and
0004 Solutions
The auxiliary heating
switches off
automatically and/or
cannot be switched on. The low-voltage protection system integrated in the control unit
switches off the auxiliary heating because the on-board voltage is
less than 10 V.
X Have the alternator and battery checked. The auxiliary heating
switches off
automatically and/or
cannot be switched on. The fuse is blown.
X
Replace the fuse; see the "Fuse allocation" supplement.
X Have the cause of the blown fuse determined at a qualified
specialist workshop. The auxiliary heating
switches off
automatically and/or
cannot be switched on. A malfunction has occurred.
X
Switch the ignition on and off twice.
If the auxiliary heating still cannot be switched on, the heating
device is faulty.
X Have the auxiliary heating checked at a qualified specialist
workshop. The auxiliary heating is
overheated. The coolant level is too low.
X
Check the coolant level and add more coolant if necessary
(Y page 244). Operating the cargo compartment air
vents
If your vehicle is equipped with a roof
ventilator, you can ventilate and extract air
from the cargo compartment. X
Turn the key to position 2in the ignition
lock.
X To activate and extract air: press the
upper section of the 0009switch.
The roof ventilator removes used air from
the cargo compartment.
X To activate and ventilate: press the lower
section of the 0010switch.
The roof ventilator feeds fresh air into the
cargo compartment.
X To switch off: set the switch to the middle
position. Operating the cargo compartment air vents
129Climate control Z
Display messages Possible causes/consequences and
0004 Solutions
Check tire(s)
0001 The pressure of one or more tires has dropped significantly. If the
tire pressure monitor has detected the affected wheel, the wheel
position is also displayed.
X
Stop the vehicle as soo naspossible, paying attention to road
and traffic conditions.
X Check the tires.
X Repairorc hange the wheel if necessary (Y page 302).
X Check the tire pressure and correct it if necessary
(Y page 281).
The display message disappears automatically after driving for
a few minutes with the corrected tire pressure. Warning Tire defect
0001 One or more tires is losing air rapidly.Ift
he tire pressure monitor
has detected the affected wheel, the wheel position is also
displayed.
X Stop the vehicle without making any sudden steering or braking
maneuvers, paying attention to the traffic conditions as you do
so.
X Repair or change the wheel (Y page 302).Vehicle
Display messages Possible causes/consequences and
0004 Solutions
0010
Battery/
Alternator Visit
workshop The battery is not being charged. Possible causes are a defective
alternator or a torn poly-V-belt.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Check the poly-V-belt.
X If the poly-V-belt is torn: do not continue driving. Consult a
qualified specialist workshop.
X If the poly-V-belt is not damaged: have the vehicle checked as
soon as possible by a qualified specialist workshop. 0001
Electrical Step The electrical step has retracted or extended only partially or not
at all.
X
Make sure there is sufficient free space for the electrical step.
X Open or close the sliding door again.
X If the electrical step still does not extend or retract fully, push
the step in manually (Y page 72). Before stepping out, remind
the passengers that the step is missing. 208
Display messagesOn-board computer and displays
Problem Possible causes/consequences and
0004 Solutions
0008
The red 0008
warning lamp
does not go out
approximately
4s econds after
the ignition is
switched on, or
it lights up again. The restraint systems have malfunctioned.
G WARNING
If SRS is 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.
X Drive on with care.
X Visit a qualified specialist workshop immediately. 0010
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.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Check the poly-V-belt.
X If the poly-V-belt is torn: do not continue driving. Consult the
nearest qualified specialist workshop.
X If the poly-V-belt is not damaged: have the vehicle checked as
soon as possible by a qualified specialist workshop. 0010
The red battery
indicator lamp is
lit while the
engine is
running. The battery is faulty.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Do not continue driving under any circumstances.
X Consult a qualified specialist workshop. 0005
The yellow brake
pad wear
indicator lamp is
lit after the
engine is started
or while the
vehicle is in
motion. The brake pads/linings have reached their wear limit.
G WARNING
Braking performance can be impaired.
There is a risk of an accident.
X Have the brake pads/linings replaced as soon as possible at a
qualified specialist workshop. 001D
The yellow
engine oil level
warning lamp is
lit after the
engine is started
or while the
vehicle is in
motion. The oil level has dropped to the minimum level.
X
Check the engine for oil loss.
X If oil loss is detected: consult a qualified specialist workshop
immediately.
X If no oil loss is detected: chec kthe oil level and add engine oil
(Y page 243). 214
Indicator and warning lamps in the instrument clusterOn-board computer and displays
X
Insert oil dipstick 0005back into the guide
tube as far as it will go and remove it again.
If the level is between minimum mark 0026
and maximum mark 0006, the oil level is
correct.
X If the oil level has droppe dto or below
minimum mark 0026, open cap0025and add
engine oil (Y page 244).
The difference in quantity between
marks 0006and 0026is approximately
2 US quarts (2 l).
X Close the hood.
OM651 4-cylinder diesel engine:
At outside temperatures between 32 ‡
(–0 †) and 86 ‡(30 †) you can measure the
oil level whe ncold.
Measuring the engine oil when the engine is
cold is less precise than measuring when the
engine is at normal operating temperature.
When the appropriate warning is shown in the
display
X Adding engine oil (Y page 244)
Or
X Have engine oil siphoned off.
Adding engine oil G
WARNING
If engine oil comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next
to the filler neck. Let the engine cool down
and thoroughly clean the engine oil off the
components before starting the engine.
! The alternator is located below the engine
oil filler neck.Ife ngine oil spills onto the
alternator, there is a dange rofalternator
damage. Be very careful when adding
engine oil. H
Environmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Do not add too much oil. adding too much
engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off.
! Do not use any additives in the engine oil.
This could damage the engine.
X Open the hood (Y page 240).
X Unscrew and remove cap 0025.
X Add engine oil.
X Place cap 0005on the filler nec kand tighten.
Whe ndoing so, make sure that the cap
engages correctly.
X Check the oil level with the oil dipstick
(Y page 243) or on the display
(Y page 242).
X Close the hood. Coolant
G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
Only check the coolant level and/or fill the
coolant if the vehicle is on a level surface and
the engine has cooled down. The coolant
temperature must be below 122 ‡ (50 †).
! Check the engine cooling and heating
system regularly for leaks.
If a large quantity of coolant is lost, have
the cause traced and rectified at a qualified
specialist workshop. 244
Engine compartmentMaintenance and care
Installing/removing the floor
covering (starter battery)
G
WARNING
Objects in the driver' sfootwell can restric tthe
pedal travel or obstruct adepressed pedal.
The operating and road safety of the vehicle
is jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficien tclearance for the pedals. Do not use
loose floormats. X
Switch off all electrical consumers.
X To remove: remove screws 0026and take off
trim 0006.
X Remove floor covering 0005.
X To install: place floor covering 0005in the
driver's footwell.
X Slide floor covering 0005underneath the
carrier of the accelerator pedal and align it
at the base of the driver's seat and at the
door sill.
Make sure that the floor covering does not
obstruct the accelerator pedal.
X Put trim 0006in place and screw screws 0026
back in. Disconnecting/connecting the
starter battery
Important safety notes G
WARNING
During the charging process, a battery
produces hydroge ngas. If a shor tcircuit
occurs or sparks are created, the hydrogen
gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
R Never place metal objects or tools on a
battery.
R It is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and
disconnecting the jumper cables.
R Never connect or disconnect the battery
terminals while the engine is running.
Disconnecting the starter battery !
Switch off the engine and remove the key
fro mt he ignition lock before you loosen or
disconnectt he terminal clamps. You may
otherwise destroy electronic components
such as the alternator.
Always disconnectt he starter battery in the
battery case in the driver's footwell first.
! Always disconnectt he battery in
the order described below. Never swap the
terminal clamps. You may otherwise
damage the vehicle electronics. Battery
251Maintenance and care Z
X
Loosen the bolts holding retainer 0026, which
prevents the battery from moving around. X
Pull retainer 0026upwards.
X Slide the battery from its anchorage in the
direction of travel.
X Fold the bar of the battery upwards and
remove the battery from the battery case.
Installing the starter battery X
Insert the battery into the battery case.
X Fold down the bar of the battery.
X Slide the battery into its anchorage in the
opposite direction to the direction of travel.
X Insert retainer 0026.
X Tighten the bolts on retainer 0026which
holds the battery in place.
X Attach breather hose with connector
bracket 0006to connection 0005of the
ventilation cover.
X Connect the battery (Y page 251). Disconnecting/connecting the
auxiliary battery
Important safety notes G
WARNING
During the charging process, a battery
produces hydrogen gas. If a short circuit
occurs or sparks are created, the hydrogen
gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
R Never place metal objects or tools on a
battery.
R It is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and
disconnecting the jumper cables.
R Never connect or disconnect the battery
terminals while the engine is running.
Disconnecting the additional battery !
Switch off the engine and remove the key
from the ignition lock before you loosenor
disconnec tthe terminal clamps. You may
otherwise destroy electronic components
such as the alternator.
Always disconnectt he starter battery in the
battery case in the driver's footwell first.
! Always disconnectt he battery in
the order described below. Never swap the
terminal clamps. You may otherwise
damage the vehicle electronics. Battery
253Maintenance and care Z