128LightingLightingExterior lighting.......................... 128
Light switch .............................. 128
Automatic light control .............129
High beam ............................... 129
High beam assist .....................130
Headlight flash ......................... 130
Headlight range adjustment ....131
Headlights when driving abroad .................................... 131
Daytime running lights .............131
Adaptive forward lighting .........132
Hazard warning flashers ..........134
Turn and lane-change signals . 134
Front fog lights ......................... 135
Rear fog lights ......................... 135
Parking lights ........................... 135
Reversing lights .......................136
Misted light covers ...................136
Interior lighting ........................... 136
Instrument panel illumination control ..................................... 136
Interior lights ............................ 136
Reading lights .......................... 137
Sunvisor lights ......................... 137Lighting features ........................138
Centre console lighting ............138
Entry lighting ............................ 138
Exit lighting .............................. 138
Battery discharge protection ....139Exterior lighting
Light switch
Light switch with Automatic light
control
154Driving and operatingDriving and
operatingDriving hints ............................... 155
Control of the vehicle ...............155
Steering ................................... 155
Starting and operating ...............155
New vehicle running-in ............155
Ignition switch positions ...........155
Power button ........................... 156
Retained power off ..................157
Starting the engine ..................158
Overrun cut-off ........................ 159
Stop-start system ....................159
Parking .................................... 162
Engine exhaust .......................... 163
Diesel particle filter ..................163
Catalytic converter ...................164
AdBlue ..................................... 164
Automatic transmission ..............167
Transmission display ...............167
Selector lever .......................... 168
Manual mode ........................... 169
Electronic driving programmes 170
Fault ........................................ 170
Interruption of power supply ....170Manual transmission ..................171
Drive systems ............................ 172
All-wheel drive ......................... 172
Brakes ........................................ 172
Antilock brake system .............172
Parking brake .......................... 173
Brake assist ............................. 175
Hill start assist ......................... 175
Ride control systems .................175
Traction Control system ..........175
Electronic Stability Control ......176
Interactive driving system ........177
Driver assistance systems .........180
Cruise control .......................... 180
Speed limiter ........................... 182
Adaptive cruise control ............183
Forward collision alert .............190
Following distance indication ...194
Active emergency braking .......194
Parking assist .......................... 196
Side blind spot alert .................202
Lane change alert ....................204
Rear view camera ...................205
Rear cross traffic alert .............207
Traffic sign assistant ................208
Lane departure warning ..........211
Fuel ............................................ 213
Fuel for petrol engines .............213Fuel for diesel engines ............213
Fuel for liquid gas operation ....213
Refuelling ................................ 215
Fuel consumption - CO 2-
Emissions ............................... 220
Trailer hitch ................................ 220
General information .................220
Driving characteristics and towing tips .............................. 221
Trailer towing ........................... 221
Towing equipment ...................222
Trailer stability assist ...............223
194Driving and operatingIn the following cases, forward
collision alert may not detect a vehicle ahead or sensor performance may be limited:
● on winding roads
● when weather limits visibility, e.g. fog, rain, or snow
● when the sensor is blocked by snow, ice, slush, mud, dirt, or
windscreen damage
Following distance indication
The following distance indication
displays the distance to a preceding
moving vehicle. The system uses,
depending on the vehicle equipment,
either the radar behind the radiator
grille or the front camera in the
windscreen to detect the distance of
a vehicle directly ahead in your lane.
It is active at speeds above 25 mph.
When a preceding vehicle is detected ahead, the distance is indicated in
seconds, displayed on a page in the
Driver Information Centre 3 110.On Baselevel display set Settings
X with the Menu button and select
Following distance indication via the
adjuster wheel on the turn signal lever
3 110.
On Midlevel or Uplevel display, select
Info menu and press o to select
Following distance indication 3 110.
The minimum indicated distance is
0.5 seconds.
If there is no vehicle ahead or the vehicle ahead is out of range, two
dashes will be displayed: -.- s.
If Adaptive cruise control is active,
this page shows the following
distance setting instead 3 183.
Active emergency braking
Active emergency braking can help to reduce the damage from crashes with vehicles and obstacles directly
ahead, when a collision can no longer be avoided either by manual braking
or by steering. Before the active
emergency braking applies, the driver
is warned by the forward collision
alert 3 190.
The feature uses various inputs (e.g.
radar sensor, brake pressure, vehicle speed) to calculate the probability of
a frontal collision.
Active emergency braking operates automatically above walking speed,
provided that Auto Collision
Preparation setting is not deactivated
in the vehicle personalisation menu
3 121.
The system includes: ● brake preparation system
● emergency automatic braking
● forward looking brake assist
Driving and operating1959Warning
This system is not intended to
replace the driver responsibility for driving the vehicle and looking
ahead. Its function is limited to
supplemental use only. The driver must continue to apply the brake
pedal as the driving situation
dictates.
Brake preparation system
When approaching a vehicle ahead
so quickly that a collision is likely, the
brake preparation system slightly
pressurises 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.
Below a speed of 11 mph the system
can apply full braking.
Forward looking brake assist
In addition to the brake preparation
system and emergency automatic
braking, the forward looking brake
assist function makes the brake assist more sensitive. Therefore,
depressing the brake pedal less
strongly results in immediate hard
braking. This function helps the driver
brake quicker and harder before the
imminent collision.9 Warning
Active emergency braking is not
designed to apply hard
autonomous braking or to
automatically avoid a collision. It is designed to reduce the vehicle
speed before a collision. It may not
react for 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 wearingtheir 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 cases, the active emergency braking system may provide an
automatic braking in situations that
seem to be unnecessary, for instance
in parking garages, due to traffic signs in a curve or due to vehicles in
another lane. This is normal
operation, the vehicle does not need
service. Firmly apply the accelerator
pedal to override the automatic
braking.
202Driving and operatingcorrect distance indication in the
upper part of these vehicles
cannot be guaranteed.
Objects with a very small reflection
cross-section, e.g. objects of
narrow size or soft materials, may
not be detected by the system.
Parking assist systems do not
detect objects outside the
detection range.
Notice
The parking assist system can be
activated and deactivated by
changing the settings in the
Info-Display.
Vehicle personalisation 3 121.
Notice
The parking assist system
automatically detects factory-fitted
towing equipment. It is deactivated
when the connector is plugged in.
It is possible that the sensor detects a non-existing object (echo
disturbance) caused by external acoustical or mechanic
disturbances.
Advanced parking assist system
may not respond to changes in the
parking space after initiating a
parallel parking manoeuvre.
Notice
After production, the system
requires a calibration. For optimal
parking guidance, a driving distance
of at least 22 miles, including a
number of bends, is required.
Side blind spot alert
The side blind spot alert system
detects and reports objects on either
side of the vehicle, within a specified
"blind spot" zone. The system alerts visually in each exterior mirror, when
detecting objects that may not be
visible in the interior and exterior
mirrors.
The system's sensors are located in
the bumper on the left and right side
of the vehicle.9 Warning
Side blind spot alert does not
replace driver vision.
The system does not detect:
● vehicles outside the side blind zones which may be rapidly
approaching
● pedestrians, cyclists or animals
Before changing a lane, always
check all mirrors, look over the
shoulder and use the turn signal.
When the system detects a vehicle in the side blind zone while driving
forwards, either while passing a
vehicle or being passed, the yellow
warning symbol B will illuminate in
the relevant exterior mirror. If the
driver then activates the turn signal,
the warning symbol B starts flashing
yellow as a warning not to change
lanes.
Driving and operating203Notice
If the passing vehicle is at least
6 mph faster than the passed
vehicle, the warning symbol B in the
relevant exterior mirror may not
illuminate.
When the vehicle is started, both
exterior mirror displays will briefly come on to indicate that the system is operating.
If the vehicle is equipped with lane
change alert 3 204, the symbol F
is displayed in the mirrors.
The system can be activated or
deactivated in the vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
Deactivation is indicated by a message in the Driver Information
Centre.
Detection zones
The system sensor covers a zone of
approx. 3.5 metres on both sides of
the vehicle. This zone starts at each
exterior mirror and extends rearwards
by approx. 3 metres. The height of the
zone is between approx.0.5 metres
and 2 metres off the ground.
The system is deactivated if the
vehicle is towing a trailer.
Side blind spot alert is designed to ignore stationary objects such as
guardrails, posts, curbs, walls and
beams. Parked vehicles or oncoming
vehicles are not detected.
Fault
Occasional missed alerts can occur
under normal circumstances.
Side blind spot alert does not operate when the left or right corners of the
rear bumper are covered with mud,
dirt, snow, ice, slush, or in heavy
rainstorms. Cleaning instructions
3 270.
In the event of a fault in the system or if the system does not work due to
temporary conditions, a message is
displayed in the Driver Information
Centre. Seek the assistance of a
workshop.
Driving and operating205Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
The system is deactivated if the
vehicle is towing a trailer.
Deactivation is indicated by a
message in the Driver Information
Centre.
Notice
After production, the system
requires a calibration. For optimal
performance, drive as soon as
possible on a straight highway road
with roadside objects, e.g. guardrails
and barriers for some distance.
Fault
Occasional missed alerts can occur under normal circumstances or in
sharp curves. The system can
temporarily alert of objects in the blind spot at specific weather conditions(rain, hail etc). Driving on a wet road
or in the transitions from a dry area to a wet area can cause the system to
light up, as water splash can be
interpreted as an object. Otherwisethe system may light up due to
guardrails, signs, trees, shrubs or
other immobile objects. This is normal
operation and the system does not
need to be serviced.
Lane change alert may not operate
when the left or right corners of the
rear bumper are covered with mud,
dirt, snow, ice or slush. Cleaning
instructions 3 270.
In the event of a fault in the system or if the system does not work due to
temporary conditions, a message is
displayed in the Driver Information
Centre. Seek the assistance of a
workshop.
Rear view camera The rear view camera assists the
driver when reversing, by displaying a
view of the area behind the vehicle.
The view of the camera is displayed
in the Colour-Info-Display.9 Warning
The rear view camera does not
replace driver vision. Note that
objects that are outside the
camera's field of view and the
advanced parking assist sensors,
e.g. below the bumper or
underneath the vehicle, are not
displayed.
Do not reverse the vehicle by only looking at the Info-Display and
check the surrounding area
behind and around the vehicle
before reversing.
Activation
Rear view camera is automatically
activated when reverse gear is
engaged.
206Driving and operatingFunctionality
The camera is mounted between the
number plate lights and has a viewing angle of 130°.
Due 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 in 1 metre intervals projected on
the picture to define the distance to
shown objects.
Trajectory lane of the vehicle is
shown in accordance with the
steering angle.
The function can be deactivated in the
vehicle personalisation menu in the
Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
Warning symbols
Warning symbols are indicated as
triangles 9 on the picture which show
obstacles detected by the rear
sensors of the advanced 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 deactivated when a certain forward speed is exceeded or
if reverse gear is not engaged for
approx. 10 seconds.
Activation or deactivation of the rear
view camera can be set in the vehicle personalisation menu in the Colour-
Info-Display.