Problems with the key/remote control
Problem Possible causes/consequences and
0004 Solutions
It is no longer possible
to lock the vehicle
using the remote
control.
The turn signals do not
flash when the vehicle
is locked. The doors are not closed properly.
X
Close the doors properly and lock the vehicle again. The central locking system has malfunctioned.
X
Lock the vehicle using the folding key (Y page 64).
X Have the central locking system checked as soon as possible
at a qualified specialist workshop. It is no longer possible
to lock or unlock the
vehicle using the
remote control. The key battery is weak or discharged.
X
Point the remote control at the driver's door handle from very
close range and press the 0009or0008 button.
If this does not work:
X Replace the key battery (Y page 66).
Or
X Lock the vehicle using the folding key (Y page 64). The remote control is faulty.
X
Lock the vehicle using the folding key (Y page 64).
X Have the key checked at a qualified specialist workshop. The key cannot be
turned in the ignition
lock. The steering lock has jammed mechanically.
X
Remove the key and insert it again into the ignition lock. Turn
the steering wheel from side to side while doing so. The engine cannot be
started using the key. The on-board voltage is too low.
X
Switch off all non-essential consumers, such as interior lighting,
and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 254).
Or
X Jump-start the vehicle (Y page 267).
Or
X Consult a qualified specialist workshop. You have lost a key. X
Have the key deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the mechanical locks replaced. 68
KeyOpening and closing
Seat heating
G
WARNING
Repeatedly switching on the seat heating can
cause the seat cushion and backrest pads to
become very hot. The health of persons with
limited temperature sensitivity or a limited
ability to react to excessively high
temperatures may be affected or they may
even suffer burn-like injuries. There is a risk
of injury.
Therefore, do not switch the seat heating on
repeatedly.
! When you leave your seat, do not place
anything on the seat and switch off the seat
heating. Do not switch the seat heating on
when the seat is not occupied, e.g. when
driving without a co-driver. The seat
heating may otherwise overheat, causing
damage to the seat. The three red indicator lamps in the
0007
button show the activated heating level 1to
3.
The system automatically switches down
from level 3to level 2after approximately
five minutes.
The system automatically switches down
from level 2to level 1after approximately
ten minutes.
At level 1, the seat heating remains in
continuous operation. X
Make sure that the key is in position 1or
2 in the ignition lock.
X To switch on: press the0007button
repeatedly until the desired heating level
has been set.
X To switch off: press the0007button
repeatedly until all indicator lamps go out.
If the indicator lamps of the current heating
level in the 0007button flash, the seat
heating has switched off automatically. In this
case, too many electrical consumers are
switched on or the battery charge is not
sufficient. The seat heating will automatically
switch back to the current heating level when
enough on-board voltage is available again. Steering wheel
G
WARNING
You could lose control of your vehicle if you
do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine. G
WARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is a risk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion. G
WARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury. Steering wheel
85Seats, steering wheel and mirrors
Z
If you move the switch to automatic control,
the rear/cargo compartment lamps go on
when you open a door or unlock the vehicle.
It switches off automatically after
20 minutes, or when you close the doors.
Motion detector
G
WARNING
The motion detector sends the invisible
infrared radiation emitted by LEDs (light
emitting diodes).
These LEDs are classified as class 1M lasers
and can damage the retina if you:
R look directly into the unfiltered laserb eam
of the motion detector for an extended
period
R look directly into the laser beam of the
motion detector using optical instruments,
e.g. eyeglasses or a magnifying glass.
There is a risk of injury.
Never look directly into the motion detector.
The cargo compartment lighting is also
switched on by the motion detector in the
cargo compartment of Cargo Vans equipped
with this feature.
If the motion detector detects a movemen tin
the cargo compartment when the vehicle is
stationary, the cargo compartment lighting
switches on for approximately two minutes.
The cargo compartment lighting can be
switched on by the motion detecto rwithin
four seconds if:
R the rear interior light switch (Y page 95) is
set to automatic control.
R the vehicle is stationary, the parking brake
is applied and the brake pedal is not being
depressed
Or R
the selector lever is in position Pon
vehicles with automatic transmission and
the brake pedal is not being depressed and
R the vehicle has not been locked fro mthe
outside using the key
The motion detector switches off
automatically if no change is detected in the
vehicle for several hours, e.g. if a door is
opened, if the ignition key is turned, etc. This
prevents the battery from becoming
discharged. Changing bulbs
Important safety notes
G
DANGER
Xenon bulbs carry a high voltage. You can get
an electric shock if you remove the cover of
the Xenon bulb and touch the electrical
contacts. There is a risk of fatal injury.
Never touch the parts or the electrical
contacts of the Xenon bulb. Always have work
on the Xenon bulbs carried out at a qualified
specialist workshop. G
WARNING
Bulbs, lamps and connectors can get very hot
when operating. If you change a bulb, you
could burn yourself on these components.
There is a risk of injury.
Allow these components to cool down before
changing a bulb.
! Make sure the bulbs are always securely
installed.
If your vehicle is equipped with Bi-Xenon
bulbs, you can recognize this by the following:
the cone of light from the Xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the low-beam headlamps must be
switched on before startingt he engine.
The bulbs and lamps are an essential
componentofv ehicle safety. You must
therefore make sure that these function 96
Changing bulbsLights and windshield wipers
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
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 possible. 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 (Y page 26). Breaking-in notes
The first 1,000 miles (1,500 km)
New or replaced brake pads and brake disks
only reach their optimum braking effec tafter
100 miles (a few hundred kilometers). Until
then, compensate for this by applying greater
force to the brake pedal.
For the service life and economy of your
vehicle it is crucial that you brea kinthe
engine with due care.
R Therefore, protect the engine for the first
1,000 miles (1,500 km) by driving at
varying vehicle and engine speeds.
R Avoid overstraining the vehicle and high
engine speeds during this period, e.g.
driving at full throttle. Do not exceed 0001of
the maximum speed for each gear.
R Do not change down a gear manually in
order to brake.
R Try to avoid depressing the accelerator
pedal beyond the point of resistance
(kickdown).
R The shift ranges 3,2or 1should only be
engaged when driving slowly, e.g. when
driving in mountainous terrain.
After 1,000 miles (1,500 km), you can
increase the engine speed gradually and
accelerate the vehicle up to full speed.
i You should also observe these notes on
breaking-in if the engine or parts of the drive train on your vehicle have been
replaced. Driving
Important safety notes
G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect.Y ou will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident .Release
the parking brake fully before driving off. Battery isolating switch
Important safety notes !
Make sure that the key is in position 0in
the ignition lock and wait at least
20 seconds before disconnecting or
connecting the battery isolating switch.
You could otherwise damage electrical
system components.
You can use the battery isolating switch to
disconnect the power supply to all your
vehicle's consumers. This will prevent
uncontrolled battery discharge caused by off-
load curren tconsumption.
If your vehicle is equipped with an auxiliary
battery in the engine compartment, you will
need to disconnect both batteries. Only then
is the electrical system fully disconnected
from the power supply. 132
DrivingDriving and parking
i
Only switch the vehicle to de-energized
using the battery main switch if:
R the vehicle is stationary for a lengthy
period
R it is absolutely necessary
After the power supply has been activated,
you will need to reset the side windows
(Y page 77).
Switching off the power supply !
When you clamp the connector under the
accelerator pedal, make sure that the
connector does not become damaged or
dirty. It may otherwise not be possible to
restore the electrical connection when the
parts are reassembled. Battery isolating switch in the driver's footwell, on
the right-hand side next to the accelerator pedal
X Remove the key from the ignition lock and
waitf or about 20 seconds.
X Press and hold button 0006and unplug
connector 0005from the earth pin.
X Clamp connector 0005under the accelerator
pedal so that it cannot make contact with
the earth pin.
All starter battery consumers are
disconnected from the power supply. Switching on the power supply X
Insert the key into the ignition lock.
X Press connector 0005onto earth pin 0006until
you feel it engage and the lock inhibitor is
released.
Connector 0005must be in full contact with
earth pin 0006.
All consumers are reconnected to the DC
power supply. Key positions
0011
To insert/remove the key, to lock the
steering wheel
0008 To unlock the steering wheel, power
supply for some consumers (e.g. the
radio)
0009 To switch on the ignition, power supply for
all consumers, preglow and drive position
000A To start the engine
On vehicles with a battery main switch, you
must first switch on the power supply
(Y page 132). Driving
133Driving and parking Z
Problems with the engine
Problem Possible causes/consequences and
0004 Solutions
The engine does not
start.
The starter motor can
be heard. There is air in the fuel system.
X
Turn the key back to position 0in the ignition lock before
attempting to start the engine again.
X Start the engine again.
Please bear in mind that lengthy and frequent starting attempts
will drain the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start.
The starter motor can
be heard. The reserve
fuel warning lamp is lit
and the fuel gage is at
0. The fuel tank has been run dry.
X
Refuel the vehicle.
If you drive until the fuel tank is completely empty, air may get into
the fuel system. If the engine does not start after refueling, bleed
the fuel system as follows:
X Turn the key to position 2in the ignition for approximately
10 seconds.
X Start the engine continuously for a maximum of 60 seconds.
If the engine does not start:
X Wait approximately 2minutes.
X Start the engine continuously for a maximum of 60 seconds
again.
X If the engine still fails start, do not continue trying to start it.
X Consult a qualified specialist workshop. The engine does not
start.
The starter motor
cannot be heard. The
yellow
0018engine
diagnostic lamp and
the yellow 0009DEF
indicator lamp 1
light
up. The exhaust gas aftertreatmen
tis faulty, an emission-relevant
malfunction has occurred or the DEF reserve has been used up.
The engine management prevents the engine from starting.
This malfunction or defect can damage the exhaust gas
aftertreatment.
X Observe the messages in the display:
R on vehicles without steering-wheel buttons (Y page 195)
R on vehicles with steering-wheel buttons (Y page 204) and
(Y page 204). The engine does not
start.
The starter motor
cannot be heard. The battery isolating switch is switched off.
X
Switch on the power supply (Y page 132).1
Only vehicles without steering-wheel buttons. Driving
137Driving and parking Z
X
Turn tank filler cap 0006counter-clockwise,
remove it and let it hang from strap 0005.
Make sure that tool 0023remains in tank filler
cap 0006while doing so.
X Only fill up the DEFt ank until the DEFlevel
is visible for the first time in the filler neck.
X Replace tank filler cap 0006and turn
clockwise.
X Pull tool 0023out of tank filler cap 0006and
stow with the vehicle tool kit in the footwell
on the co-driver's side.
X Pull cover 0025up over hole 0026of tank filler
cap 0006, turn and release.
X Turn tank filler cap 0006.
If tank filler cap 0006turns freely, the DEF
tank is closed. Parking
Important safety notes
G
WARNING
Flammable materials, e.g. leaves, grass or
twigs, may ignite if they come into contact
with hot parts of the exhaust system or
exhaust gases for extended periods. There is
a risk of fire.
Park the vehicle so that no flammable
materials come into contact with hot parts of
the vehicle. In particular, do not park on dry
areas of grass or harvested grainfields. G
WARNING
If you switch off the ignition while driving,
safety-relevant function sare only available
with limitations, or not at all.T his could affect,
for example, the power steering and the brake
boosting effect.Y ou will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine.
They could also operate the vehicle's
equipment. There is a risk of an accident and
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! Am oving vehicle can lead to damage to
the vehicle or damage to the drive train.
! When the vehicle is parked, always
remove the key to prevent the battery from
becoming discharged.
On vehicles with a battery isolating switch,
switch off the power supply if the vehicle is
to be out of use for a longer period of time.
Always park your vehicle safely and according
to legal requirements and secure it against
rolling away.
To ensure that the vehicle is properly secured
against rolling away unintentionally:
R the parking brake must be firmly applied
R the selector lever must be in position Pand
the key must be removed from the ignition
lock
R
R on steep uphill or downhill gradients, the
front wheels must be turned towards the
curb
R on steep uphill or downhill gradients, the
empty vehicle must be secured at the front
axle, e.g. with a wheel chock or similar
object
R on steep uphill or downhill gradients, the
laden vehicle must also be secured at the
rear axle, e.g. with a wheel chock or similar
object Parking
145Driving and parking Z