Instruments and controls123Messages in the Info DisplaySome important messages may
appear additionally in the
Info Display. Press the multifunction
knob to confirm a message. Some messages only pop-up for a few
seconds.
Warning chimes If several warnings appear at thesame time, only one warning chime
will sound.
When starting the engine or whilst driving
The warning chime regarding not
fastened seat belts has priority over
any other warning chime.
● If seat belt is not fastened.
● If a door or the tailgate is not fully
closed when starting off.
● If a certain speed is exceeded with parking brake applied.
● If adaptive cruise control deactivates automatically.
● If approaching a vehicle ahead too closely.● If approaching a pedestrian ahead too closely.
● If a programmed speed or speed
limit is exceeded.
● If a warning message appears in the Driver Information Centre.
● If the electronic key is not in the passenger compartment.
● If the parking assist detects an object.
● If an unintended lane change occurs.
● If the exhaust filter has reached the maximum filling level.
When the vehicle is parked and/or the driver's door is opened
● With exterior lights on.
● If the trailer hitch is not engaged.
During an Autostop ● If the driver's door is opened.
● If any condition for an Autostop is
not fulfilled.Battery voltage
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
1. Switch off any electrical consumers which are not requiredfor a safe ride, e.g. seat heating,
heated rear window or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message will disappear
after the engine has been started
twice without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.
Instruments and controls125combination with automatic
brake functionality.
Front Pedestrian Detection :
Activates warning chimes only or warning chimes in combination
with automatic brake functionality
or deactivates the system
completely.
Adaptive Cruise Go Notifier :
Activates or deactivates the
reminder message to drive off
when the adaptive cruise control
holds the vehicle at standstill.
Lane Change Alert : Activates or
deactivates side blind zone alert.
Park Assist : Activates or
deactivates the parking assist.
Activation is selectable with or
without attached trailer coupling.
Rear Cross Traffic Alert :
Activates or deactivates rear cross traffic alert.
● Comfort and Convenience
Auto Memory Recall : Changes
the settings to the recall of
memorised settings for power
seat adjustment.Easy Exit Driver\'s Seat :
Activates or deactivates easy exit
function of the power seat.
Chime Volume : Changes the
volume of warning chimes.
Reverse Tilt Mirror : Activates or
deactivates the parking assist
function of the exterior mirrors.
Auto Mirror Folding : Activates or
deactivates folding of the exterior
mirrors with the remote control.
Personalisation by Driver :
Activates or deactivates the
personalisation function,
depending on which key is being
used.
Rain Sense Wipers : Activates or
deactivates automatic wiping
with rain sensor.
Auto Wipe in Reverse Gear :
Activates or deactivates
automatic switching on of the
rear window wiper when reverse gear is engaged.
Extended Hill Start Assist :
Toggles between hill start assist
and extended hold hill start assist● Lighting
Vehicle Locator Lights : Activates
or deactivates the entry lighting.
Exit Lighting : Activates or
deactivates and changes the
duration of exit lighting.
Left or Right-Hand Traffic :
Changes between lighting for left or right-hand traffic.
Adaptive Forward Lighting :
Changes the settings of the LED
headlights.
● Power Door Locks
Open Door Anti-Lock Out :
Activates or deactivates the door
locking function while a door is open.
Auto Door Lock : Activates or
deactivates the automatic door
locking function after switching
on ignition.
Delayed Door Lock : Activates or
deactivates the delayed door
locking function. This feature
Lighting135Activated automatically at a speed up
to approx. 55 km/h and in situations
with exterior ambient light. The light is wide and symmetrical. A special
beam pattern is designed to avoid
glare for other road users.
Country light
Activated automatically at a speed
above approx. 55 km/h when driving
in rural areas. The illumination of the current lane and the side of the roadis improved. Oncoming and
preceding vehicles are not dazzled.
Curve light
Particular LEDs, based on steering
angle and speed, are additionally
triggered to improve lighting in
curves. This function is activated at
speeds from 40 km/h to 70 km/h and
reacts to steering angle.
Corner light
When turning off, depending on the
steering angle and the turn signal light, particular LEDs are triggered
which illuminate the direction of
travel. It is activated up to a speed of
40 km/h.
Reverse parking function
To assist driver's orientation when
parking, both corner lights and
reversing light illuminate when
headlights are on and reverse gear is
engaged. They remain illuminated for
a short time after disengaging reverse gear or until driving faster than
7 km/h in a forward gear.
High beam assist This feature allows the high beam to
function as main driving light at night.
The camera in the windscreen
detects the lights of oncoming or
preceding vehicles. Each LED on
right or left side can be triggered or
faded out particularly according to the
traffic situation. This gives the best
light distribution without dazzling
other road users. Once activated,
high beam assist remains active and
switches high beam on and off
depending on surrounding
conditions. The latest setting of the
high beam assist will remain after the ignition is switched on again.
Driving and operating175Driving and
operatingDriving hints ............................... 176
Control of the vehicle ...............176
Steering ................................... 176
Starting and operating ...............176
New vehicle running-in ............176
Power button ........................... 177
Retained power off ..................178
Starting the engine ..................178
Overrun cut-off ........................ 180
Stop-start system ....................180
Parking .................................... 182
Engine exhaust .......................... 183
Exhaust filter ............................ 183
Catalytic converter ...................184
AdBlue ..................................... 185
Automatic transmission ..............187
Manual transmission ..................192
Drive systems ............................ 192
All-wheel drive ......................... 192
Brakes ........................................ 193
Antilock brake system .............193
Parking brake .......................... 194Brake assist............................. 195
Hill start assist ......................... 195
Ride control systems .................196
Traction Control system ..........196
Electronic Stability Control ......197
Interactive driving system ........199
Driver assistance systems .........201
Cruise control .......................... 201
Speed limiter ........................... 202
Adaptive cruise control ............204
Forward collision alert .............214
Following distance indication ...217
Active emergency braking .......218
Front pedestrian protection .....221
Parking assist .......................... 223
Side blind spot alert .................229
Lane change alert ....................231
Panoramic view system ...........232
Rear view camera ...................235
Rear cross traffic alert .............236
Traffic sign assistant ................238
Lane keep assist .....................242
Fuel ............................................ 244
Fuel for petrol engines .............244
Fuel for diesel engines ............246
Refuelling ................................ 246
Trailer hitch ................................ 248
General information .................248Driving characteristics and
towing tips .............................. 249
Trailer towing ........................... 249
Towing equipment ...................250
Trailer stability assist ...............251
218Driving and operating● Weather limits visibility, such asfog, rain, or snow.
● The sensor is blocked by snow, ice, slush, mud, dirt, windscreen
damage or affected by foreign
items, e.g. stickers.
Active emergency braking
Active emergency braking is part of
the forward collision system 3 124. It
can help to reduce the damage and
injury from crashes with vehicles,
pedestrians 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 3 214 or the Front pedestrian
protection alert 3 221.
The feature uses various inputs (e.g.
camera sensor, radar sensor, brake
pressure, vehicle speed) to calculate
the probability of a frontal collision.9 Warning
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 to reduce
the vehicle speed before a
collision.
The system may not react to
animals. After a sudden lane
change, the system needs a
certain time to detect the next
preceding vehicle.
The driver must always be ready
to take action and apply the brakes and steer to avoid collisions.
Functionality
If equipped only with front camera the
active emergency braking operates in forward gear above walking speed up
to 85 km/h.
With radar sensor active emergency
braking operates in forward gear
above walking speed at all speeds.
A precondition is that forward collision
alert with front camera system is not
deactivated in the vehicle
personalisation menu 3 124.
The system includes: ● brake preparation system
● emergency automatic braking ● forward looking brake assist
● intelligent brake assist (only with radar sensor)
● front pedestrian protection system
Brake preparation system
When approaching a vehicle ahead
or a pedestrian so quickly that a
collision is likely, the brake
preparation system slightly
pressurizes 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.
If equipped only with front camera the
system operates up to a speed of 80
km/h.
Driving and operating219Emergency automatic brakingAfter activation of brake preparation
system and just before the imminent
collision, this function automatically
applies limited braking to reduce the
impact speed of the collision or
prohibit a crash. Depending on the
situation, the vehicle may
automatically brake moderately or
hard. This front automatic braking can
only occur if a vehicle ahead is
detected, indicated by the vehicle
ahead indicator A 3 214 . On vehicles
with front pedestrian protection, front automatic braking can also occur
when a pedestrian ahead is detected,
indicated by the pedestrian ahead
indicator 7.
If equipped only with front camera the system operates up to a speed of 80
km/h.
Below a speed of 40 km/h the system
can apply full braking.
Emergency automatic braking may
slow the vehicle to a complete stop to
try to avoid a potential crash. If this
happens, emergency automatic
braking may engage the electricparking brake to hold the vehicle at a
stop. To release press the electric
parking brake button or firmly press
the accelerator pedal.9 Warning
Emergency automatic braking is
an emergency crash preparation
feature and is not designed to
avoid crashes. Do not rely on the
system to brake the vehicle.
Emergency automatic braking will
not brake outside of its operating speed range and only responds to
detected vehicles and
pedestrians.
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, pressing
the brake pedal less strongly results
in immediate hard braking. This
function helps the driver brake
quicker and harder before the
imminent collision.
If equipped only with front camera the
system operates up to a speed of 85
km/h.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 to 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 must 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.
Intelligent Brake Assist
If the vehicle is equipped with radar
sensor Intelligent brake assist may
activate when the brake pedal is
220Driving and operatingapplied quickly by providing a boost
to braking based on the speed of approach and distance to a vehicle
ahead.
Minor brake pedal pulsations or pedal movement during this time is normal
and the brake pedal should continue to be applied as needed. Intelligent
brake assist will automatically
disengage only when the brake pedal is released.9 Warning
Intelligent brake assist may
increase vehicle braking in
situations when it may not be
necessary. You could block the
flow of traffic. If this occurs, take
your foot off the brake pedal and
then apply the brakes as needed.
Front pedestrian protection
3 221.
Deactivation
Active emergency braking can be
deactivated in the personalisation
menu 3 124. If deactivated a
message is displayed in the Driver
Information Centre.
We recommend to deactivate the
system in the vehicle personalisation
in the following cases:
● when the vehicle is being towed
● before using an automatic car wash with ignition switched on
● if the windscreen has been damaged close to the camera
● if the front bumper has been damaged
System limitations In some cases, the active emergencybraking 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 acceleratorpedal to override the automatic
braking if the situation and the
surroundings permit.
In the following cases, Active
emergency braking performance is
limited:
● Driving on winding or hilly roads.
● Detecting all vehicles, especially vehicles with a trailer, tractors,
muddy vehicles, etc.
● Detecting a vehicle when weather limits visibility, such as in
fog, rain, or snow.
● During nighttime driving.
● Weather limits visibility, such as fog, 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.
To avoid malfunction keep the areas
of the camera sensor in the
windscreen and the radar sensor in
the radiator grille always clean from
dirt, dust, ice and snow.
Driving and operating229Caution
Performance of the system can bereduced when sensors are
covered, e.g. by ice or snow.
Performance of the parking assist
system can be reduced due to
heavy loading.
Special conditions apply if there
are taller vehicles in the vicinity
(e.g. off-road vehicles, mini vans,
vans). Object identification and correct 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.
Note
It is possible that the sensor detects a non-existing object caused by
echo disturbance from external
acoustic noise or mechanical
misalignments (sporadic false
warnings may occur).
Make sure that the front number
plate is properly mounted (not bent
and no gaps to the bumper on the left
or right side) and the sensors are
firmly in place.
Advanced parking assist system
may not respond to changes in the
available parking space after
initiating a parking manoeuvre. The
system may recognize an entry, a
gateway, a courtyard or even a crossing as a parking slot. After
selecting reverse gear the system
will start a parking manoeuvre. Take care regarding the availability of the
suggested parking slot.
Low curbs and surface irregularities,
e.g. on construction zones, are not
detected by the system. The driver
accepts responsibility.
Note
New vehicles require a calibration
during first use. For optimal parking
guidance, a driving distance of at
least 10 km, including a number of
bends, is required.System is calibrated to factory-fitted
wheels. Parking performance is
altered with other tyre or wheels
sizes.
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
displays a visual alert in each exterior mirror, when detecting objects that
may not be visible in the interior and
exterior mirrors.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.