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Driving and operating177The driver assistance systems donot relieve the driver from full
responsibility for vehicle
operation.
Lane departure warning
The lane departure warning system
observes the lane markings between
which the vehicle is driving via a front camera. The system detects lane
changes and warns the driver in the
event of an unintended lane change
via visual and acoustic signals.
Criteria for the detection of an
unintended lane change are:
● no operation of turn signals
● no brake pedal operation
● no active accelerator operation or
speeding-up
● no active steering
If the driver is performing these
actions, no warning will be issued.
Activation
The lane departure warning system is activated by pressing ). The
illuminated LED in the button
indicates that the system is switched
on. When the control indicator ) in
the instrument cluster illuminates
green, the system is ready to operate.
The system is only operable at
vehicle speeds above 35 mph and if
lane markings are available.
When the system recognises an
unintended lane change, the control
indicator ) changes to yellow and
flashes. Simultaneously a chime
sound is activated.
Deactivation
The system is deactivated by
pressing ), the LED in the button
extinguishes.
At speeds below 35 mph the system
is inoperable.
Fault
The lane departure warning system
may not operate properly when:
● the windscreen is not clean
● there are adverse environmental conditions like heavy rain, snow,
direct sunlight or shadows
Page 208 of 263
206Vehicle careNo.Circuit35Power windows, rain sensor,
exterior mirror36Climate control37–38Vacuum pump39Fuel system control module40Windscreen washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44–45Radiator fan46–47Horn48Radiator fan49Fuel pump50Headlamp levelling, adaptive
forward lightingNo.Circuit51–52Auxiliary heater, diesel engine53Transmission control module,
Engine control module54Vacuum pump, instrument
panel cluster, heating ventila‐
tion, air conditioning system
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open the compartment and push it to the left to unlock. Fold the
compartment down and remove it.
Page 233 of 263

Vehicle care231When 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.
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.
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 damage
Rectify minor paintwork damage witha 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.
Towing equipment
Do not clean the coupling ball bar with a steam-jet or high-pressure jet
cleaner.Interior care
Interior and upholstery Only clean the vehicle interior,
including the instrument panel fascia
and panelling, with a dry cloth or
interior cleaner.
Clean the leather upholstery with
clear water and a soft cloth. In case of
heavy soiling, use leather care.
The instrument cluster and the
displays should only be cleaned using
a soft damp cloth. If necessary use a
weak soap solution.
Clean fabric upholstery with a
vacuum cleaner and brush. Remove
stains with an upholstery cleaner.
Clothing fabrics may not be
colourfast. This could cause visible discolourations, especially on light-
coloured upholstery. Removable
stains and discolourations should be
cleaned as soon as possible.
Clean seat belts with lukewarm water or interior cleaner.
Page 260 of 263

258Headlight flash ........................... 115
Headlight range adjustment ......115
Headlights................................... 112 Headlights when driving abroad 115
Head restraint adjustment .............8
Head restraints ............................ 45
Heated mirrors ............................. 30
Heated rear window ..................... 33
Heated steering wheel .................77
Heating ........................................ 53
Heating and ventilation system . 125
High beam ........................... 94, 114
High beam assist ..................94, 114
Hill start assist ........................... 153
Horn ....................................... 13, 78
I Identification plate .....................236
Ignition switch positions .............137
Immobiliser ............................ 28, 93
Indicators ...................................... 83
Information displays...................... 95
Instrument cluster ........................83
Instrument panel fuse box .........206
Instrument panel illumination .....203
Instrument panel illumination control .................................... 121
Instrument panel overview ........... 10
Interactive driving system ...........155
Interior care ............................... 231Interior lighting............................ 121
Interior lights ...................... 122, 203
Interior mirrors .............................. 30
Interruption of power supply ......149
Introduction .................................... 3
ISOFIX child restraint systems ....67
J Jump starting ............................. 226
K Key, memorised settings ..............21
Keys ............................................. 19
Keys, locks ................................... 19
L
Lane departure warning .......91, 177
Lashing eyes ............................... 74
Light switch ................................ 112
Load compartment ................24, 71
Load compartment fuse box ......207
Loading information .....................75
Low fuel ....................................... 93
M
Malfunction indicator light ............90
Manual anti-dazzle ......................30
Manual mode ............................. 148
Manual seat adjustment ...............48
Manual transmission .................. 149
Memorised settings ......................21Mirror adjustment ........................... 8
Misted light covers .....................121
N
New vehicle running-in ..............137
Number plate light .....................202
O Object detection systems ...........163
Odometer ..................................... 83
Oil, engine .......................... 234, 238
OnStar ........................................ 107
Operate pedal ............................... 90
Outside temperature ....................80
Overrun cut-off ........................... 138
P Parking ................................ 17, 140
Parking assist ............................ 163
Parking brake ............................ 151
Parking lights ............................. 121
Particulate filter ........................... 142
Performance .............................. 242
Performing work ........................189
Pollen filter ................................. 133
Power outlets ............................... 82
Power seat adjustment ................51
Power steering.............................. 91
Power windows ............................ 31
Preheating ................................... 92
Puncture ..................................... 220