Driving and operating187Brake preparation system
When approaching a vehicle ahead
so quickly that a collision is likely, the brake preparation system slightlypressurises the brakes. This reduces
the response time, when a manual or automatic braking is requested.
The brake system is prepared so that braking can occur more rapidly.
Emergency automatic braking
After the brake preparation and just
before the imminent collision, this
function automatically applies limited
braking to reduce the impact speed of
the collision.
Forward looking brake assist
In addition to brake preparation
system and emergency automatic
braking, the forward looking brake
assist function makes the brake assist more sensitive. In this way,
depressing the brake pedal slightly
results immediately in a strong
braking. This function helps the driver
brake quicker and stronger before the imminent collision.9 Warning
Active emergency braking is not
designed to apply strong
autonomous braking or to avoid automatically a collision. It is
designed to reduce the vehicle
speed before collision. It may not
react on stopped vehicles,
pedestrians or animals. After a
sudden lane change, the system
needs a certain time to detect the
next preceding vehicle.
The complete attention of the
driver is always required while
driving. The driver shall always be ready to take action and apply the brakes and steer to avoid
collisions. The system is designed
to work with all occupants wearing their seat belts.
System limitations
The active emergency braking has
limited or no function during rain,
snow or heavy dirt, as the radar
sensor can be covered by a water
film, dust, ice or snow. In case of
sensor blockage, clean the sensor
cover.
In some seldom cases the active
emergency braking system may
provide a short automatic braking in
situations that seem to be
unnecessary, for instance due to
traffic signs in a curve or due to
vehicles in another lane. This is
acceptable operation, the vehicle
does not need service. Firmly apply
the accelerator pedal to override the
automatic braking.
Settings
Settings can be changed in the
vehicle personalisation menu in the
Info-Display.
Select the relevant setting in
Settings in the Info-Display.
Vehicle personalisation 3 125.
Fault
In the event of a system service
requirement, a message is displayed
in the Driver Information Centre.
Driving and operating193Due to the high position of the
camera, the rear bumper can be seen
on the display as a guide to position.
The area displayed by the camera is
limited. The distance of the image that
appears on the display differs from
the actual distance.
Guiding lines
Dynamic guiding lines are horizontal
lines at one metre intervals projected
on the picture to define the distance
to displayed objects.
Trajectory lane of the vehicle is
shown in accordance with the
steering angle.
Warning symbols
Warning symbols are indicated as
triangles 9 on the picture which
shows obstacles detected by the rear
sensors of the parking assist.
Additionally 9 appears on the top line
of the Info-Display with the warning to
check the vehicle surrounding.
Deactivation
The camera is switched off when a
certain forward speed is exceeded or
if reverse gear is not engaged for
approx. 15 seconds. Rear view
camera can be manually deactivated
in the vehicle personalisation menu in the Info-Display. Select the relevant
setting in Settings .
Vehicle personalisation 3 125.Deactivation of guiding lines and
warning symbols
7'' R 4.0 IntelliLink Activation or
deactivation of the visual guiding lines and the warning symbols can be
changed via touch buttons in the
lower zone of the display.
7'' Navi 950 Activation or deactivation
of the visual guiding lines and the
warning symbols can be changed in
the Settings menu in the
Info-Display. Select the relevant
setting in Settings, I Vehicle .
Info-Display 3 121.
Vehicle personalisation 3 125.
Driving and operating197Reasons for signs being cleared:● A predefined distance was driven
or time has elapsed (differs for
each sign type)
● Vehicle drives through a turn
● The speed becomes slower than 52 km/h (city entry detection)
Fault
The traffic sign assistant system may
not operate correctly if:
● The area of the windscreen, where the front camera is
located, is not clean or affected
by foreign items, e.g. stickers.
● Traffic signs are completely or partially covered or difficult to
discern.
● There are adverse environmental
conditions, e.g. heavy rain, snow,direct sunlight or shadows.
● Traffic signs are incorrectly mounted or damaged.
● Traffic signs do not comply with the Vienna Convention on traffic
signs (Wiener Übereinkommen
über Straßenverkehrszeichen).Caution
The system is intended to help the driver 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 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 active, no warning will
be issued.
Activation
236Vehicle careNo.Circuit1–2Trailer outlet3Parking assist4Selective catalytic reduction
system5–6–7Power seat8–9Selective catalytic reduction
system10Nitrogen oxide sensor11Trailer module/Trailer socket12Trailer module13Trailer outlet14–15–No.Circuit16Interior mirror/Rear view
camera17Power outlet18–19Steering wheel heating20Sunblind21Heated front seats22–23–24Selective catalytic reduction
system25–26–27–28–29–30–No.Circuit31–32Active damping system/Lane
departure warning
288GGauges ....................................... 103
Gear shifting ............................... 114
General information ...................209
Glass panel .................................. 34
Glovebox ..................................... 66
H Halogen headlights ....................223
Hand brake ................................. 166
Hazard warning flashers ............137
Headlight flash ........................... 134
Headlight range adjustment ......134
Headlights................................... 132 Headlights when driving abroad 135
Head restraint adjustment .............8
Head restraints ............................ 36
Heated mirrors ............................. 30
Heated rear window ..................... 33
Heated steering wheel .................97
Heating ........................................ 43
Heating and ventilation system . 142
High beam ......................... 116, 133
High beam assist ................116, 133
Hill start assist ........................... 168
Horn ....................................... 14, 98
I
Identification plate .....................263
Ignition switch positions .............151
Immobiliser .......................... 28, 116Indicators.................................... 103
Info display ................................. 121
Information displays.................... 117
Instrument cluster ......................103
Instrument panel fuse box .........234
Instrument panel illumination .....230
Instrument panel illumination control .................................... 139
Instrument panel overview ........... 10
Interactive driving system ...........171
Interior care ............................... 257
Interior lighting ............................ 139
Interior lights ...................... 139, 230
Interior mirrors .............................. 30
Interruption of power supply ......164
Introduction .................................... 3
J
Jump starting ............................. 252
K Keys ............................................. 20
Keys, locks ................................... 20
L Lane departure warning .....114, 197
Lashing eyes ............................... 88
LED headlights ...........116, 136, 225
Lighting features .........................140
Light switch ................................ 132
Load compartment ................25, 79Load compartment cover .............81
Load compartment fuse box ......235
Loading information .....................94
Load rails and hooks ...................88
Low fuel ..................................... 116
M Malfunction indicator light ..........112
Manual anti-dazzle ......................30
Manual mode ............................. 163
Manual seat adjustment ...............39
Manual transmission .................. 165
Manual windows ..........................31
Memorised settings ......................22
Mirror adjustment ........................... 8
Misted light covers .....................138
N
New vehicle running-in ..............151
Number plate light .....................229
O Object detection systems ...........188
Odometer ................................... 104
Oil, engine .................. 217, 260, 265
OnStar ........................................ 128
Operate pedal ............................. 113
Outside temperature ..................100
Overhead console .......................68
Overrun cut-off ........................... 153
290Traction Control system off......... 114
Traffic sign assistant ...........117, 194
Trailer coupling ........................... 209
Trailer stability assist .................212
Trailer towing ............................. 209
Transmission ............................... 16
Transmission display .................162
Tread depth ............................... 242
Trip odometer ............................ 104
Turn and lane-change signals ...137
Turn signal ................................. 110
Tyre chains ................................ 243
Tyre designations ......................237
Tyre pressure ............................ 238
Tyre pressure monitoring system ............................. 115, 239
Tyre pressures ........................... 275
Tyre repair kit ............................. 243
U
Ultrasonic parking assist............. 188
Underseat storage .......................68
Upholstery .................................. 257
Using this manual ..........................3
V Vehicle battery ........................... 220
Vehicle checks............................ 216
Vehicle data ................................ 265
Vehicle data recording and privacy ..................................... 283Vehicle detected ahead..............117
Vehicle dimensions .................... 272
Vehicle Identification Number ....263
Vehicle jack ................................ 237
Vehicle messages .....................123
Vehicle personalisation .............125
Vehicle security ............................ 26
Vehicle specific data ......................3
Vehicle storage ........................... 215
Vehicle tools ............................... 237
Vehicle unlocking ........................... 6
Vehicle weight ........................... 271
Ventilation ................................... 142
W
Warning chimes .........................124
Warning lights ............................. 103
Warning triangle .......................... 92
Washer and wiper systems .........14
Washer fluid ............................... 220
Wheel changing .........................246
Wheel covers ............................. 243
Wheels and tyres .......................237
Windows ....................................... 31
Windscreen................................... 31
Windscreen wiper/washer ...........98
Winter tyres ............................... 237
Wiper blade replacement ..........222