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194Driving and operating9Warning
Using the Front pedestrian braking
system while towing a trailer couldcause loss of vehicle control and
crash. Turn the system to Alert or
Off in the vehicle personalisation
when towing a trailer.
Vehicle personalisation 3 123.
System limitations
In the following cases, front
pedestrian protection may not detect
a pedestrian ahead or sensor
performance is limited:
● Vehicle speed is out of range from 5 mph to 50 mph in forward
gear.
● The distance to an pedestrian ahead is more than 40 m.
● Driving on winding or hilly roads.
● 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.
Parking assist General information
When the trailer hitch is attached,
change the configuration settings in
the vehicle personalisation menu in
the Info Display.
Vehicle personalisation 3 123.
When attaching a trailer or bike
carrier to the trailer hitch, the parking
assist is deactivated.
Rear parking assist9 Warning
It is the driver who bears full
responsibility for the parking
manoeuvre.
Always check the surrounding
area while reversing and using the rear parking assist system.
The rear parking assist makes
parking easier by measuring the
distance between the vehicle and
rear obstacles. It informs and warns
the driver by giving acoustic signals
and display indication.
The system has four ultrasonic
parking sensors in the rear bumper.
Activation
After ignition is switched on, the rear
parking assist is activated.
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Driving and operating197
The distance indication can be
inhibited by vehicle messages with a higher priority. After dismissing themessage distance indication appears again.
Deactivation
The system is deactivated
automatically when vehicle speed
exceeds 7 mph.
Manual deactivation is also possible
by pressing the parking assist button
r .
When the system is deactivated
manually, the LED in the button
extinguishes and a message pops up
in the Driver Information Centre.
After a manual deactivation, the front- rear parking assist is activated again
if r is pressed or if reverse gear is
engaged.
The complete system can be
manually deactivated in the vehicle
personalisation menu in the
Info Display. It remains deactivated
during the ignition cycle or until
activation in personalisation menu
again.
Vehicle personalisation 3 123.
Fault
In the event of a fault or if the system
does not work temporarily, e.g.
because of high external noise level
or other interference factors, a
message pops-up in the Driver
Information Centre.
Vehicle messages 3 121.Advanced parking assist9 Warning
The driver bears full responsibility
for accepting the parking slot
suggested by the system and the
parking manoeuvre.
Always check the surrounding
area in all directions when using
the advanced parking assist.
The advanced parking assist
measures a suitable parking slot
while passing, calculates the
trajectory and automatically steers
the vehicle into a parallel or
perpendicular parking slot.
Instructions are given in the Driver
Information Centre 3 114 or,
depending on the version, on the Info Display 3 120 , supported by acoustic
signals.
The driver must control acceleration,
braking and gear shifting, while
steering is done automatically.
Page 204 of 303

202Driving and operatingSide blind spot alertThe 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.
Side blind spot alert uses some of the
advanced parking assist sensors
which are located in the front and rear bumper on both sides 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 lights.
When the system detects a vehicle in the side blind zone while driving
forwards, either while passing a
vehicle or being passed, a yellow
warning symbol B will illuminate in
the relevant exterior mirror. If the
driver then activates the turn lights,
the warning symbol B starts flashing
yellow as a warning not to change
lanes.
Notice
If the overtaking vehicle is at least
6 mph faster than the vehicle being
overtaken, the warning symbol B in
the relevant exterior mirror may not
illuminate.Side blind spot alert is active from
speeds of 6 mph up to 87 mph.
Driving faster than 87 mph
deactivates the system, indicated by
low lighting warning symbols B in
both exterior mirrors. Reducing the speed again will extinguish the
warning symbols. If a vehicle is then
detected in the blind zone, the
warning symbols B will illuminate as
normal on the relevant side.
When the vehicle is started, both exterior mirror displays will briefly
illuminate to indicate that the system
is operating.
The system can be activated or
deactivated in the Info Display.
Vehicle personalisation 3 123.
Deactivation is indicated by a
message in the Driver Information
Centre.
Detection zones
The detection zones start at the rear bumper and extend approx. 3 m
rearwards and to the sides. The
height of the zone is approx. between 0.5 m and 2 m off the ground.
Page 207 of 303

Driving and operating205changed in the Settings menu in the
Info Display. Select the relevant
setting in Settings I Rear Camera .
Info Display 3 120.
Vehicle personalisation 3 123.
System limitations The rear view camera may not
operate properly when:
● The surrounding is dark.
● The sun or the beam of headlights is shining directly into
the camera lenses.
● During nighttime driving.
● Weather limits visibility, such as fog, rain, or snow.
● The camera lenses are blocked by snow, ice, slush, mud, dirt.Clean the lense, rinse with water,
and wipe with a soft cloth.
● The vehicle is towing a trailer.
● The vehicle had a rear end accident.
● There are extreme temperature changes.Fault messages are displayed with a
9 on the top line of the Info Display.
Traffic sign assistant
Functionality Traffic sign assistant detects
designated traffic signs via a front
camera and displays them in the
Driver Information Centre.
If the vehicle is equipped with an
embedded navigation system, traffic
signs from data maps may be
included additionally.
Traffic signs, which will be detected,
are:
Limit and no passing signs ● speed limit
● no passing
● end of speed limit
● end of no passingRoad signs
Beginning and end of:
● city regions (country-specific)● motorways
● A-roads
● play streetsAdd on signs ● additional hints to traffic signs
● restriction of trailer towing
● tractor constraints
● wet warning
● ice warning
● time constraints
● distance constraints
● direction arrows
Speed limit signs and no passing
signs are displayed in the Driver
Information Centre until the next
Page 302 of 303

300Tyre pressures ........................... 283
Tyre repair kit ............................. 254
U Ultrasonic parking assist............. 194
Upholstery .................................. 268
Uplevel display ........................... 114
USB port ....................................... 98
Using this manual ..........................3
V Vehicle battery ........................... 227
Vehicle checks............................ 223
Vehicle data ................................ 275
Vehicle data recording and privacy ..................................... 292
Vehicle detected ahead ..............113
Vehicle dimensions .................... 281
Vehicle identification number ....273
Vehicle jack ................................ 246
Vehicle messages .....................121
Vehicle personalisation .............123
Vehicle security ............................ 36
Vehicle specific data ......................3
Vehicle storage ........................... 222
Vehicle tools ............................... 246
Vehicle unlocking ........................... 6 Ventilating ..................................... 55W
Warning chimes .........................122
Warning lights ............................. 103
Warning triangle .......................... 87
Washer and wiper systems .........13
Washer fluid ............................... 226
Wheel changing .........................257
Wheel covers ............................. 253
Wheels and tyres .......................248
Windows ....................................... 41
Windscreen................................... 41
Windscreen wiper and washer ....93
Winter tyres ............................... 248
Wiper blade replacement ..........229