126Climate controlareas with high dust levels or which
are sensitive to environmental
allergens.
Passenger compartment air filter
replacement may also be needed if
there is reduced air flow, windows
fogging up, or odors.
Your dealer can help to determine
when it is the right time to replace the
filter.
Air conditioning regularoperation
In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a month, irrespective of the weather
and time of year. Operation with
cooling is not possible when the
outside temperature is too low.
Service For optimal cooling performance, it is
recommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:● functionality and pressure test
● heating functionality
● leakage check
● check of drive belts
● cleaning of condenser and evaporator drainage
● performance check
● cabin air filter check
Driving and operating1290:ignition off: Some functions
remain active until key is
removed or driver's door is
opened, provided the ignition was
on previously1:ignition on power mode: Ignition
is on, diesel engine is preheating. Control indicators illuminate and
most electrical functions are
operable2:engine start: Release key after
after engine has been started
Steering wheel lock
Remove key from ignition switch and
turn steering wheel until it engages.
9 Danger
Never remove the key from
ignition switch during driving as
this will cause steering wheel lock.
Power button
Electronic key must be inside the
vehicle.
Engine start
Operate clutch pedal (manual
transmission) or brake pedal
(automatic transmission) and press
Start/Stop . Release button after
starting procedure begins. Diesel
engine starts after preheating.Ignition on power mode without
starting the engine
Press Start/Stop without operating
clutch or brake pedal. Control
indicators illuminate and most
electrical functions are operable.Engine and ignition off
Press Start/Stop briefly in each mode
or when engine is running and vehicle
is stationary. Some functions remain
active until driver's door is opened,
provided the ignition was on
previously.Emergency shut off during driving
Press Start/Stop for five seconds
3 131. Steering wheel locks as soon
as vehicle is stationary.
Steering wheel lock
The steering wheel lock activates
automatically when:
● The vehicle is stationary.
● The ignition has been switched off.
To release steering wheel lock, open
and close driver's door and switch on accessory mode or start the engine
directly.
Driving and operating133ActivationThe stop-start system is available assoon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.
Deactivation
Deactivate the stop-start system
manually by pressing Ò. The
deactivation is indicated when the
LED in the button illuminates.
AutostopVehicles with manual transmission
An Autostop can be activated at a
standstill or at a low speed up to
14 km/h.
Activate an Autostop as follows: ● Depress the clutch pedal.
● Set the lever to neutral.
● Release the clutch pedal.
The engine will be switched off while
the ignition stays on.Vehicles with automatic transmission If the vehicle is at a standstill with
depressed brake pedal, Autostop is
activated automatically.
The engine will be switched off while the ignition stays on.
The stop-start system will be disabled
on inclines of 15% or more.Indication
An Autostop is indicated by control
indicator D.
During an Autostop, the heating and
brake performance will be
maintained.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled.
● The stop-start system is not manually deactivated.
● The bonnet is fully closed.
● The driver's door is closed or the driver's seat belt is fastened.
● The vehicle battery is sufficiently charged and in good condition.
● The engine is warmed up.
● The engine coolant temperature is not too high.
134Driving and operating● The engine exhaust temperatureis not too high, e.g. after driving
with high engine load.
● The ambient temperature is above -5 °C.
● The climate control system allows an Autostop.
● The brake vacuum is sufficient.
● The self-cleaning function of the diesel particle filter is not active.
● The vehicle was driven at least at
walking speed since the last
Autostop.
Otherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 116.
If an autostop is temporarily not
available, D flashes green 3 91.
New vehicle running-in 3 128.Vehicle battery discharge protection
To ensure reliable engine restarts,
several vehicle battery discharge
protection features are implemented
as part of the stop-start system.
Power saving measures
During an Autostop, several electrical
features such as auxiliary electric
heater or rear window heating are
disabled or switched to a power
saving mode. The fan speed of the
climate control system is reduced to
save power.
Restart of the engine by the driver
Vehicles with manual transmissionConventional restart
All engines have conventional restart.
Depress the clutch pedal without
depressing the brake pedal to restart
the engine.
On engines with late restart a
conventional restart is only possible
without depressed brake pedal.Late restart
All engines have late restart in
addition to conventional restart. Late
restart is only active on gradients up to 5%.
● Depress the brake pedal.
● Depress the clutch pedal.
● Select first gear.
● Release the brake pedal to restart the engine.
Vehicles with automatic transmission
Release the brake pedal or move
selector lever out of D into N or P to
restart the engine.
Restart of the engine by the stop- start system
The selector lever must be in neutral
to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically
by the stop-start system:
● The stop-start system is manually deactivated.
● The bonnet is opened.
168Driving and operatingSome fuels, mainly high octane
racing fuels, can contain an octane
enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). Do not use fuels or fuel additives with MMT as they can
reduce spark plug life and affect
emission control system
performance. The malfunction
indicator light Z may turn on 3 88. If
this occurs, seek the assistance of a
workshop.
Fuel for diesel engines Only use diesel fuel that complies
with EN 590.
In countries outside the European
Union use Euro-Diesel fuel with a
sulfur concentration below 50 ppm.Caution
Use of fuel that does not comply to EN 590 or similar can lead to
engine powerloss, increased wear
or engine damage.
Do not use marine diesel oils, heating
oils, Aquazole and similar diesel-
water emulsions. Diesel fuels must
not be diluted with fuels for petrol
engines.
Refuelling9 Danger
Before refuelling, switch off
ignition and any external heaters
with combustion chambers.
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.
Caution
In case of misfuelling, do not
switch on ignition.
Fuel filler flap is located at left rear
side of vehicle.
212Vehicle carePaintwork polish with silicone forms a
protective film, making waxing
unnecessary.
Plastic body parts must not be treated with wax or polishing agents.
Windows and windscreen wiper
blades
Use a soft lint-free cloth or chamois
leather together with window cleaner
and insect remover.
When cleaning the rear window from
inside, always wipe in parallel to the
heating element to prevent damage.
For mechanical removal of ice, use a
sharp-edged ice scraper. Press the
scraper firmly against the glass so
that no dirt can get under it and
scratch the glass.
Clean smearing wiper blades with a
soft cloth and window cleaner.
Remove dirt residues from smearing
wiper blades by using a soft cloth and window cleaner. Also make sure to
remove any residues such as wax,
insect residues and similar from the
window.Ice residues, pollution and continuous
wiping on dry windows will damage or even destroy the wiper blades.
Glass panel
Never clean with solvents or abrasive
agents, fuels, aggressive media
(e.g. paint cleaner, acetone-
containing solutions etc.), acidic or
highly alkaline media or abrasive
pads.
Wheels and tyres
Do not use high-pressure jet
cleaners.
Clean rims with a pH-neutral wheel
cleaner.
Rims are painted and can be treated
with the same agents as the body.
Paintwork damageRectify minor paintwork damage with
a touch-up pen before rust forms.
Have more extensive damage or rust
areas repaired by a workshop.Underbody
Some areas of the vehicle underbody
have a PVC undercoating while other
critical areas have a durable
protective wax coating.
After the underbody is washed, check
the underbody and have it waxed if
necessary.
Bitumen/rubber materials could
damage the PVC coating. Have
underbody work carried out by a
workshop.
Before and after winter, wash the
underbody and have the protective
wax coating checked.
Liquid gas system9 Danger
Liquid gas is heavier than air and
can collect in sink points.
Take care when performing work
at the underbody in a pit.
240Head restraints ............................ 43
Head-up display............................ 97
Heated mirrors ............................. 36
Heated rear window ..................... 39
Heated steering wheel .................74
Heated windscreen .......................40
Heating ........................................ 47
Heating and ventilation system . 115
High beam ........................... 92, 108
High beam assist ..........................92
Hill start assist ........................... 145
Horn ....................................... 14, 75
I Identification plate .....................218
Ignition switch positions .............128
Immobiliser .................................. 35
Indicators ...................................... 83
Inductive charging ........................79
Info display ................................... 95
Instrument cluster ........................80
Instrument panel fuse box .........193
Instrument panel illumination .....190
Instrument panel illumination control .................................... 112
Instrument panel overview ........... 10
Interior care ............................... 213
Interior lighting ............................ 112
Interior lights ...................... 113, 190
Interior mirrors .............................. 37Interruption of power supply ......142
Introduction .................................... 3
J
Jump starting ............................. 207
K Keys ............................................. 22
Keys, locks ................................... 22
L Lane departure warning .......89, 165
Lashing eyes ............................... 69
LED headlights ........................... 185
Lighting features .........................114
Light switch ................................ 107
Load compartment ................31, 65
Load compartment cover .............68
Loading information .....................71
Low beam ..................................... 92
Low fuel ....................................... 91
M Malfunction indicator light ............88
Manual anti-dazzle ......................37
Manual mode ............................. 141
Manual transmission .................. 143
Mirror adjustment ........................... 9
Misted light covers .....................112N
New vehicle running-in ..............128
Number plate light .....................190
O Object detection systems ...........151
Odometer ..................................... 84
Oil, engine .......................... 215, 220
OnStar ........................................ 103
Outside temperature ....................77
Overrun cut-off ........................... 132
P Panoramic view system ..............161
Parking ................................ 20, 135
Parking assist ............................ 151
Parking brake ............................ 145
Parking lights ............................. 112
Particulate filter ........................... 136
Performance .............................. 225
Performing work ........................177
Power button .............................. 129
Power outlets ............................... 78
Power saving mode ....................130
Power windows ............................ 38
Preheating ................................... 90
Puncture ..................................... 203
Q Quickheat ................................... 123
241RRadio Frequency Identification (RFID) ..................................... 237
Radio remote control ...................23
Rain sensor .................................. 92
Reading lights ............................ 113
Rear floor storage cover ..............68
Rear fog light ....................... 92, 111
Rear seats .................................... 48
Rear view camera ...................... 163
Rear window wiper/washer .......... 77 Recommended fluids and lubricants ........................ 215, 220
Refuelling ................................... 168 Registered trademarks ...............235
Reversing lights .........................112
Ride control systems ..................146
Roof .............................................. 41
Roof load ...................................... 71
Roof rack ..................................... 71
S Safety belts ................................... 49
Seat adjustment ....................... 7, 45
Seat belt ........................................ 8
Seat belt reminder .......................87
Seat belts ..................................... 49
Seat heating ................................. 47
Seat position ................................ 44
Selective catalytic reduction .......137Selector lever ............................. 140
Service ............................... 126, 214
Service display ............................ 85
Service information ....................214
Service vehicle soon .................... 88
Side airbag system ......................55
Side blind spot alert ....................159
Sidelights .................................... 107
Side turn signal lights ................189
Software acknowledgement .......233
Software update ......................... 235
Spare wheel ............................... 206
Speed limiter......................... 92, 149
Speedometer ............................... 83
Starting and operating ................128
Starting off ................................... 18
Starting the engine ....................131
Steering ...................................... 128
Steering wheel adjustment ......9, 74
Steering wheel controls ...............74
Stop engine .................................. 88
Stop-start system........................ 132
Storage ......................................... 64
Storage compartments .................64
Sunvisor lights ........................... 113
Sun visors .................................... 41
Symbols ......................................... 4
System check ............................... 89T
Tachometer ................................. 84
Tail lights ................................... 186
Three-point seat belt .................... 50
Tools .......................................... 195
Tow bar....................................... 170
Towing ................................ 170, 209
Towing another vehicle .............210
Towing equipment .....................171
Towing the vehicle .....................209
Traffic sign assistant .....................92
Trailer coupling ........................... 170
Trailer towing ............................. 171
Transmission ............................... 17
Transmission display .................140
Tread depth ............................... 199
Trip odometer .............................. 84
Turn and lane-change signals ...111
Turn signal ................................... 86
Tyre chains ................................ 200
Tyre deflation detection system . 198
Tyre designations ......................196
Tyre pressure ............................ 197
Tyre pressures ........................... 229
Tyre repair kit ............................. 200
U Ultrasonic parking assist............. 151
Upholstery .................................. 213
Using this manual ..........................3