242Driving and operatingCaution
The system is intended to help thedriver within a defined speed
range to discern certain traffic
signs. Do not ignore traffic signs
which are not displayed by the
system.
The system does not discern any other than the conventional traffic
signs that might give or end a
speed limit.
Do not let this special feature
tempt you into taking risks when
driving.
Always adapt speed to the road
conditions.
The driver assistance systems do not relieve the driver from full
responsibility for vehicle
operation.
Lane keep assist
Lane keep assist helps to avoid
crashes due to unintentional lane
departures. The front camera
observes the lane markings between
which the vehicle is driving. If the
vehicle approaches a lane marking, the steering wheel is gently turned to
position the vehicle back into the lane. Turn steering wheel in same
direction, if system steering is not
sufficient. Turn steering wheel gently
into opposite direction, if lane change is intended.
When crossing a lane marking
significantly, lane keep assist starts a
visual and acoustic warning.
Additionally, the status of the lane
keep assist is indicated on the Driver
Assistance page in the Driver
Information Center 3 111.
Unintended lane departure is
assumed
● without using turn signal● using the turn signal in the opposite direction of the lane
departure
● without braking
● without acceleration
● without active steering.Notice
The system is switched off during
detection of ambiguous lane
markings, e.g. in construction areas.
Notice
The system may be switched off if it
detects lanes which are too narrow,
too wide or too curved.
Activation
The lane keep assist is activated by
pressing a. The LED in the button
illuminates to indicate that the system
is switched on.
Driving and operating243
When the control indicator a in the
instrument cluster or in the head-up display illuminates green, the system
is ready to assist.
The system is operational at vehicle
speeds between 37 mph and
112 mph and if lane markings are
available.
The system gently turns the steering
wheel and the control indicator a
changes to yellow, if the vehicle
approaches a detected lane marking
without using the turn signal in that
direction.
The system alerts by flashing a
together with three chimes, from the
respective direction, if the lane is
departed significantly.
The system is only operable when a
lane marking is detected.
If the system only detects lane
markings on one side of the road, it
will only assist for this side.
Lane keep assist detects hands-free
driving. In this case a message in the
Driver Information Centre pops-up
and a chime sounds as long as lane
keep assist detects hands-free
driving.
Indication on Driver Assistance page
If the system is active but one or both
lanes are not detected, they appear
as a line of hollow dashes, as shown
on the right side of the vehicle in the
graphic above.
If the system detects a lane, it
appears as a green dashed line, as
shown on the right side of the vehicle in the graphic above. This dashed line
becomes amber if the vehicle
approaches a detected lane marking
without the turn signal in that direction has been used.
If the system intervenes by steering,
a short amber line appears, as shown on the left side of the vehicle in the
graphic above.
Deactivation
The system is deactivated by
pressing a; the LED in the button
extinguishes.
The system is deactivated
automatically when a trailer is
detected.
System limitations
The system performance may not
operate properly when:
● Vehicle speed is out of range from 37 to 112 mph.
● Driving on winding or hilly roads.
● During nighttime driving.
244Driving and operating● Weather limits visibility, such asfog, rain, or snow.
● The sensor in the windscreen is blocked by snow, ice, slush, mud,dirt, windscreen damage or
affected by foreign items, e.g.
stickers.
● The sun is shining directly into the camera lens.
● Close vehicles ahead
● Banked roads
● Road edges
● Roads with poor lane markings
● Sudden lighting changes
● Vehicle modifications, e.g. tyres.
Switch off the system if the system is
disturbed by tar marks, shadows,
road cracks, temporary or
construction lane markings, or other
road imperfections.9 Warning
Always keep your attention on the
road and maintain proper vehicle
position within the lane, otherwise
vehicle damage, injury or death
could occur.
Lane keep assist does not
continuously steer the vehicle.
The system may not keep the
vehicle in the lane or give an alert,
even if a lane marking is detected.
The steering of the lane keep
assist may not be sufficient to
avoid a lane departure.
The system may not detect hands-
off driving due to external
influences (road condition and
surface, weather etc). The driver
has full responsibility to control the vehicle and is always required tokeep the hands on the steeringwheel while driving.
Using the system while towing a
trailer or on slippery roads could
cause loss of control of the vehicle
and a crash. Switch the system off.
Fuel
Fuel for petrol engines
Only use unleaded fuel that complies
with European standard EN 228 or
equivalent.
The engine is capable of running with
fuel that contains up to 10% ethanol
(e.g. named E10).
Use fuel with the recommended
octane rating. A lower octane rating can reduce engine power and torque
and slightly increases fuel
consumption.
338Fuel for diesel engines ..............246
Fuel for petrol engines ...............244
Fuel gauge ................................. 102
Fuel price information .................156
Funnel......................................... 246
Fuses ......................................... 270
G Gauges ....................................... 100
Gear shifting ............................... 107
General information ....157, 160, 248
Glovebox ..................................... 72
H
Halogen headlights ....................260
Hand brake ................................. 193
Hazard warning flashers ............137
Headlight flash ........................... 133
Headlight range adjustment ......133
Headlights................................... 131 Headlights when driving abroad 134
Head restraint adjustment .............8
Head restraints ............................ 44
Head-up display.......................... 119
Heated mirrors ............................. 38
Heated rear window ..................... 41
Heated steering wheel .................87
Heated windscreen .......................42
Heating .................................. 53, 54
High beam ......................... 109, 132
High beam assist ................109, 132Hill start assist ........................... 195
Homescreen ............................... 144
Horn ....................................... 13, 88
I Identification plate .....................302
Immobiliser .......................... 36, 109
Indicators .................................... 100
Inductive charging ........................93
Info Display ................................. 117
Information displays.................... 111
Instrument cluster ........................95
Instrument panel fuse box .........274
Instrument panel illumination .....270
Instrument panel illumination control .................................... 139
Instrument panel overview ........... 10
Interactive driving system ...........199
Interior care ............................... 297
Interior lighting ............................ 139
Interior lights ...................... 140, 270
Interior mirrors .............................. 38
Introduction ............................ 3, 144
J Jump starting ............................. 291
K Key, memorised settings ..............24
Keys ............................................. 19
Keys, locks ................................... 19L
Lane change alert .......................231
Lane keep assist ................107, 242
Lashing eyes ............................... 79
LED headlights ...........109, 134, 262
Lighting features .........................141
Light switch ................................ 131
Live traffic ................................... 156
Load compartment ................28, 74
Load compartment cover .............77
Loading information .....................84
Low fuel ..................................... 109
M Mainscreen ................................. 144
Malfunction indicator light ..........106
Manual anti-dazzle ......................38
Manual seat adjustment ...............47
Manual transmission .................. 192
Map updates ............................... 156
Massage ....................................... 54
Memorised settings ......................24
Midlevel display .......................... 111
Mirror adjustment ........................... 8
Misted light covers .....................139
N
Navigation map card port .............93
Navigation system .....................154
New vehicle running-in ..............176
Number plate light .....................270