26Keys, doors and windows
Light-emitting diode (LED)
During the first 10 seconds of anti-
theft alarm system activation:
LED illu‐
minates=Test, ignition delay,LED
flashes
quickly=Door, load
compartment or bonnet open, or system fault.
After the first 10 seconds of anti-theft
alarm system activation:
LED flashes
slowly=System active.
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 siren can be silenced by
pressing any button of the radio
remote control or by switching on the
ignition. The anti-theft alarm system is deactivated at the same time.
If the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must be
deactivated as follows: switch the
ignition on then off, then disconnect
the vehicle's battery within
15 seconds.
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 engine can be
started.The immobiliser activates itself
automatically after the key has been removed from the ignition switch.
If 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 control indicator A continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
If control indicator A illuminates after
the engine has started, there is a fault in the engine electronics or
transmission electronics 3 81,
3 122, 3 127, or there is water in the
diesel fuel filter 3 90.
Notice
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 21,
3 25.
Instruments and controls81
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.
Flashes during or after engine start Battery voltage too low. Have
electrical system tested by a
workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine isrunning
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
accelerator until the flashing stops.
Seek the assistance of a workshop
immediately.
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.Flashes with switched on
ignition
Fault in the immobiliser system. The
engine cannot be started 3 26.
Brake and clutch system
Brake and clutch fluid level R illuminates red.
Illuminates when the parking brake is
released if the brake and clutch fluid
level is too low 3 150.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates after the ignition is
switched on if the parking brake is
applied 3 129.
Apply parking brake
R flashes red.
On vehicles with manual transmission
automated, R flashes for a few
seconds when the ignition is switched
off if the parking brake is not applied.
90Instruments and controlsVehicle messagesMessages are given via the
instrument panel display or as
warning and signal buzzers. Check
control messages appear on the
Info-Display. Some appear in an
abbreviated form. Confirm warning
messages with the multifunction
control 3 86.
Warning chimes When starting the engine or
whilst driving ■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting-off.
■ If a certain speed is exceeded with the parking brake applied.
■ If the speed programmed at the factory is exceeded.
■ If the vehicle has manual transmission automated and the
driver's door is opened when theengine is running, a gear is
engaged and the foot brake is not
depressed.
■ Warning signal sounds three times if the rear carrier system is
extended and reverse gear is
selected.
When the vehicle is parked and
the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
■ For manual transmission automated, if the parking brake is
not applied and no gear is engaged when the engine is switched off.
During an Autostop ■ If the driver's door is opened.
Battery voltage Low battery voltage in the radio
remote control. On vehicles without
check control, the message InSP3
appears in the instrument panel
display. Replace the battery 3 20.Brake light switch
Brake light does not come on during
braking. Have the cause of the fault
remedied immediately by a
workshop.
Drain diesel fuel filter
If there is water in the diesel fuel filter, the message InSP4 appears in the
instrument panel. In some models
InSP4 illuminates together with A in
the instrument. 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.
Driving and operating115Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period fuel and
engine oil consumption may be
higher and the cleaning process of the diesel particle filter may take
place more often. Autostop may be inhibited to allow for charging the
battery.
Diesel particle filter 3 119.Ignition switch positions0=Ignition off1=Steering wheel lock released,
ignition off2=Ignition on, for diesel engine:
preheating3=StartingStarting the engine
Operate clutch and brake, if the clutch pedal is not operated the engine
might not start and the control
indicator - could illuminate.
Automatic transmission in P or N.
Do not operate accelerator pedal.
Diesel engine: turn the key to position 2 for preheating and wait until control
indicator ! extinguishes.
Turn key briefly to position 3 and
release.
Before restarting or to switch off the engine, turn key back to 0.
Driving and operating119Engine exhaust9Danger
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
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 rpm. Shift down if necessary.
Diesel particle filter cleaning is then
started.
Stopping the journey or switching off
the engine during cleaning is not
recommended.
Caution
If the cleaning process is
interrupted more than once, there
is a great risk of provoking severe
engine damage.
Cleaning takes place quickest at high
engine speeds and loads.
168Vehicle care
No.Circuit1Starter2Air conditioning system3Diesel fuel filter heater4Horn5Manual transmission auto‐
mated, automatic transmission6Engine control unit7Fog lights8Engine cooling9Engine cooling10Manual transmission auto‐
mated11Glow plugs, ignition system12Headlight range adjustment,
Adaptive forward lighting13Air conditioning system14Manual transmission auto‐
mated15High beam (right)No.Circuit16High beam (left)17Main relay18Engine control unit19Airbags20Main relay21Main relay22Central control unit23Tyre repair kit24Fuel pump25ABS26Heated rear window27ABS28Interior fan29Cigarette lighter30Air conditioning system31Power window (left)32Power window (right)No.Circuit33Heated exterior mirrors34–35–
Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the light switch. Pull the top edge of the panel and fold down.
216Technical dataCapacitiesEngine oil
EngineA10XEP
A12XEL,
A12XER
A14XEL,
A14XER,
A14NEL
A16LER,
A16LES
A13DTE,
A13DTR,
A13DTC
A17DTS
including Filter [l]3.04.04.04,53.55.4between MIN and MAX [l]1.01.01.01.01.01.0
Fuel tank
Engine
A10XEP,
A12XEL,
A12XER
A14XEL,
A14XER,
A14NEL
A16LER,
A16LES
A17DTSA13DTE
A13DTC,
A13DTR
Petrol/diesel, refilling quantity [l]45454545454045LPG, refilling quantity [l]–29–––––
225
Climate control systems.............106
Clock ............................................ 74
Control indicators ......................... 78
Control of the vehicle .................114
Controls ........................................ 70
Convex shape .............................. 27
Coolant and antifreeze ...............195
Cruise control ...................... 85, 131
Cupholders .................................. 53
Curtain airbag system .................. 45
Curve lighting.............................. 100
D Danger, Warnings and Cautions ...4
Declaration of conformity ............222
Deflation detection system and tyre pressure monitoring
system ...................................... 83
Diesel fuel system bleeding .......152
Diesel particle filter ....................119
Doors ............................................ 24
Drain diesel fuel filter ...................90
Driver assistance systems ..........131
Driving characteristics and towing tips .............................. 140
Driving hints ................................ 114
E Electric adjustment ......................27
Electrical system......................... 166Electronic climate control system 109
Electronic driving programmes . ........................................ 121, 126
Electronic Stability Program 82, 130
End-of-life vehicle recovery .......146
Engine compartment fuse box ...167
Engine coolant ........................... 149
Engine coolant temperature ........83
Engine data ............................... 202
Engine exhaust .......................... 119
Engine identification ...................198
Engine oil ................... 148, 195, 199
Engine oil pressure ......................84
Entry lighting .............................. 105
Event data recorders ..................222
Exit lighting ................................ 105
Exterior care .............................. 191
Exterior light ................................. 85
Exterior lighting ......................12, 98
Exterior mirrors ............................. 27
F
Fault ................................... 122, 127
First aid ......................................... 67
First aid kit ................................... 67
Fixed air vents ........................... 113
Flex-Fix system ............................ 54
Fog light ....................................... 85
Fog lights ................................... 159
Folding mirrors ............................. 27Front airbag system .....................44
Front fog lights ........................... 102
Front seats.................................... 35 Front turn signal light ..........154, 156
Fuel............................................. 134
Fuel consumption - CO 2-
Emissions ............................... 140
Fuel for diesel engines ..............134
Fuel for liquid gas operation .......135
Fuel for petrol engines ...............134
Fuel gauge ................................... 77
Fuel selector ................................ 77
Fuses ......................................... 166
G Gauges ......................................... 76
General information ...................140
Glovebox ..................................... 53
Graphic-Info-Display, Colour- Info-Display .............................. 86
H Halogen headlights ....................154
Hand brake ................................. 128
Hand brake - see Parking brake. 129
Hazard warning flashers ............101
Headlight flash ............................. 99
Headlight range adjustment ........99
Headlights..................................... 98 Headlights when driving abroad 100