26
In brief
Natural gas operation This specially developed engine is
designed for the use of natural gas
and petrol.
The Y button is used to switch
between petrol and natural gas
operation.
The status of the LED indicates the
type of fuel in use.
Natural gas
operation
= LED off.
Petrol operation = LED illuminates.
Natural gas 3 84, 3 147. Diesel particle filter
The
diesel particle filter system filters
harmful soot particles out of the
exhaust gases. The system includes
a self-cleaning function that runs
automatically during driving. The filter
is cleaned by burning off the soot
particles at high temperature. This
process takes place automatically
under set driving conditions and may
take up to 25 minutes. Fuel
consumption may be higher during
this period. The emission of smells
and smoke during this process is
normal. Under certain driving conditions, e.g.
short distances, the system cannot
clean itself automatically.
If the filter requires cleaning and
previous driving conditions did not
enable automatic cleaning, control
indicator
! flashes.
Further instructions 3 129.
38
Keys, doors and windows
After the first 10 seconds of anti-theft
alarm system activation:
LED flashes
slowly = System active,
LED comes
on for approx.
1 second = Switch off function.
Seek the assistance of a workshop in
the event of faults.
Alarm
When triggered, the alarm gives off
an
acoustic signal (horn) and a visual
signal (hazard warning flashers). The
number and duration of which are
stipulated by legislation.
The alarm can be silenced by
pressing a button of the radio remote
control or by switching on the ignition.
The anti-theft alarm system is
deactivated at the same time. Immobiliser
The system checks whether the
vehicle
is allowed to start with the key
being used. If the transponder in the
key is recognised, the vehicle can be
started.
The electronic immobiliser activates
itself automatically after the key has
been removed from the ignition
switch or when the engine is switched
off by pressing the Start/Stop button.
If the control indicator A flashes
when the ignition is on, there is a fault
in the system; the engine cannot be
started. Switch off the ignition and
then repeat the start attempt.
If the control indicator continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
If control indicator illuminates after
the engine has started, there is a fault
in the engine electronics or
transmission electronics 3 88,
3 135, 3 139, or there is water in the
diesel fuel filter 3 101. Note
The immobiliser does not lock the
doors. You should always lock the
vehicle
after leaving it and switch on
the anti-theft alarm system 3 32,
3 36.
88
Instruments and controls 9
Danger If a child restraint system is fitted
and the control indicator is not
illuminated while driving, the front
and side airbag for the front
passenger seat are not
deactivated.
Flashes
Fault in system or child restraint
system with transponders defective
or improperly fitted
3 61.9
Danger Flashing of the control indicator
while driving indicates a fault.
Have the cause of the fault
remedied by a workshop
immediately.
Child restraint system with
transponders
3 65.
Charging system
p illuminates red. It illuminates when the ignition is
switched
on and goes out shortly after
the engine starts.
Illuminates when the engine is
running
Stop, switch off engine. Battery is not
charging. Engine cooling may be
interrupted. In diesel engines, power
to the brake servo unit may be cut.
Seek the assistance of a workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
It illuminates when the ignition is
switched on and goes out shortly after
the engine starts.
Illuminates when the engine is
running
Fault in the emission control system.
The permitted emission limits may be
exceeded. Immediately seek the
assistance of a workshop. Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
throttle until the flashing stops. Seek
the immediate assistance of
a workshop.
Service vehicle soon
A
illuminates or flashes yellow.
Illuminates when the engine is
running
Fault in engine or transmission
electronics. The electronics switch to
an emergency running programme.
Fuel consumption may be increased
and the vehicle handling may be
impaired.
If
the fault persists after restarting the
vehicle, consult a workshop.
Illuminates together with InSP4
in the service display
Seek the assistance of a workshop for
draining the diesel fuel filter.
Instruments and controls
101
Brake light switch
Brake light does not come on during
braking. Have the cause of the fault
remedied immediately by
a workshop.
Engine cooling level Low fluid level in engine cooling
system. Check coolant immediately
3 157. Drain diesel fuel filter
If
there is water in the diesel fuel filter,
the message InSP4 appears in the
instrument panel. Consult
a workshop.
Lighting
Important exterior lighting lamps,
including cables and fuses, are
monitored. In trailer mode, trailer
lighting is also monitored. Trailers
with LED lighting must have an
adapter that enables lamp monitoring
as with conventional bulbs. The failed lighting will be indicated in
the information display or the
message InSP2 will appear in the
instrument panel display.
Anti-theft alarm system
System fault in anti-theft alarm
system. Have the cause of the fault
remedied by a workshop.
Tyre pressure On vehicles with tyre pressure
monitoring
system, if there is low tyre
pressure, information on which tyre to
check appears on the display.
Driving and operating
129
Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but
accelerator is released.
Parking
■ Do not park the vehicle on an easy flammable surface. The high
temperature of the exhaust system
could ignite the surface.
■ Always apply hand brake without pressing release button. Apply as
firmly as possible on downhill or
uphill slopes. Depress the foot
brake at same time to reduce
operating force.
■ Switch off the engine and ignition. Turn the steering wheel until the
steering wheel lock engages.
■ If the vehicle is on a level surface or uphill slope, engage first gear or set
the selector lever to P before
switching off the ignition. On an
uphill slope, turn the front wheels
away from the kerb. If the vehicle is on a downhill slope,
engage reverse gear or set the
selector
lever to P before switching
off the ignition. Turn the front
wheels towards the kerb.
■ Lock the vehicle and activate the anti-theft locking system and the
anti-theft alarm system. Engine exhaust
9
Danger Engine exhaust gases contain
poisonous carbon monoxide,
which is colourless and odourless
and could be fatal if inhaled.
If exhaust gases enter the interior
of the vehicle, open the windows.
Have the cause of the fault
rectified by a workshop.
Avoid driving with an open load
compartment, otherwise exhaust
gases could enter the vehicle.
Diesel particle filter
The
diesel particle filter system filters
harmful soot particles out of the
exhaust gases. The system includes
a self-cleaning function that runs
automatically during driving. The filter
is cleaned by burning off the soot
particles at high temperature. This
process takes place automatically
under set driving conditions and may
take up to 25 minutes. Fuel
130
Driving and operating
consumption may be higher during
this period. The emission of smells
and smoke during this process is
normal. Under certain driving conditions, e.g.
short distances, the system cannot
clean itself automatically.
If the filter requires cleaning and
previous driving conditions did not
enable automatic cleaning, control
indicator
!
flashes. Continue driving,
keeping engine speed above 2000
revolutions per minute. Shift down if
necessary. Diesel particle filter
cleaning is then started. Stopping the journey or switching off
the engine during cleaning is not
recommended. Cleaning takes place
quickest at high engine speeds and
loads. The control indicator ! extinguishes
as soon as the self-cleaning
operation is complete.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gas.
Caution
Fuel grades other than those listed
on pages
3 146, 3 209 could
damage the catalytic converter or
electronic components.
Unburnt petrol will overheat and
damage the catalytic converter.
Therefore avoid excessive use of
the starter, running the fuel tank
dry and starting the engine by
pushing or towing. In the event of misfiring, uneven
engine
running, a reduction in engine
performance or other unusual
problems, have the cause of the fault
rectified by a workshop as soon as
possible. In an emergency, driving
Driving and operating
147
Do not use marine diesel oils, heating
oils or entirely or partially plant-based
diesel fuels, such as rape seed oil or
bio diesel, Aquazole and similar
diesel-water emulsions. Diesel fuels
must not be diluted with fuels for
petrol engines.
The flow and filterability of diesel fuel
are temperature-dependent. When
temperatures are low, refuel with
diesel fuel with guaranteed winter
properties.
Fuel for natural gas
operation
Use natural gas with a methane
content of approx. 78 - 99 %. L-gas
(low) has approx. 78 - 87 % and H-gas
(high) has approx. 87 - 99 %. Biogas
with the same methane content can
also be used if it has been chemically
prepared and desulphurised.
Liquid gas or LPG must not be used. Refuelling
9
Danger Before refuelling, switch off engine
and any external heaters with
combustion chambers (identified
by
sticker on fuel filler flap). Switch
off any mobile phones.
Follow the operating and safety
instructions of the filling station
when refuelling. 9
Danger Fuel is flammable and explosive.
No smoking. No naked flames or
sparks.
If you can smell fuel in your
vehicle, have the cause of this
remedied immediately by
a workshop.
Fuel filler flap is located at right rear
side of vehicle.
The
fuel filler flap can only be opened
if the vehicle is unlocked.
Vehicle care
169 Fuse assignments in
conjunction with load
compartment
fuse box version A
No. Circuit
1
ABS
2 ABS
3 Interior fan electronic climate
control
4 Interior fan heating and air
conditioning system
5 Radiator fan
6 Radiator fan
7 Central locking system
8 Windscreen washer, rear
window washer
9 Heated rear window, heated
exterior mirror
10 Diagnostics plug
11 Instruments No. Circuit
12
Mobile telephone, digital radio,
infotainment system, display
13 Courtesy light
14 Windscreen wipers
15 Windscreen wipers
16 Horn, ABS, brake light switch,
air conditioning system
17 Diesel fuel filter or air
conditioning system
18 Starter
19 –
20 Horn
21 Engine electronics
22 Engine electronics
23 Headlight range adjustment
24 Fuel pump
25 –
26 Engine electronics