Display message ............................ 183
Notes ............................................. 284
Warning lamp ................................. 197
Brake force distribution
Display message ............................ 183
see EBD (electronic brake force
distribution)
Brake lamps
Replacing bulbs ............................... 92
Brake lamps (Chassis Cab)
Replacing bulbs ............................... 93
Brake linings
Display message ............................ 182
Indicator lamp ................................ 199
Brake pads/linings
New ............................................... 135
Brake system
Warning lamp ................................. 196
Brakes
ABS .................................................. 54
Adaptive Brake Assist .................... 142
Applying the parking brake ............ 130
BAS .................................................. 56
Brake fluid (notes) ......................... 284
Checking brake fluid level .............. 224
Display message ............................ 183
EBD .................................................. 56
Important safety notes .................. 134
New brake pads/linings ................ 135
Parking brake (notes) ..................... 135
Riding tips ...................................... 134
Breakdown
Fire extinguisher ............................ 243
First-aid kit .................................... 242
Jump-starting ................................. 243
Reflective safety jacket .................. 242
Vehicle tool kit ............................... 241
Warning lamp ................................. 242
Warning triangle ............................ 242
see Towing away
Bulb failure indicator .......................... 82
C
California
Important notice for retail cus-
tomers and lessees .......................... 23 Car
see Vehicle
Care
Access step in the bumper ............ 238
Car wash ........................................ 234
Display ........................................... 238
Exterior lights ................................ 237
Interior ........................................... 238
Notes ............................................. 234
Paint .............................................. 236
Plastic trim .................................... 239
Power washer ................................ 235
Rear view camera .......................... 237
Roof lining ...................................... 239
Seat belt ........................................ 239
Seat cover ..................................... 239
Selector lever ................................ 239
Sensors ......................................... 237
Sliding door ................................... 238
Steering wheel ............................... 239
Step (electrical) ............................. 238
Trim pieces .................................... 239
Washing by hand ........................... 235
Washing the engine ....................... 235
Wheels ........................................... 236
Windows ........................................ 236
Wiper blades .................................. 236
Cargo compartment
Activating/deactivating ventila-
tion ................................................ 117
Cargo compartment floor ................... 29
Cargo tie-down points and tie
downs
Important safety notes .................. 215
Cargo tie-down rings
Installing ........................................ 217
Permissible tensile load ................. 287
Carrier system
Ladder rack ................................... 218
Center console overview .................... 37
Central locking
Automatic locking ............................ 66
Important safety notes .................... 65
Locking/unlocking (buttons) ........... 65
Locking/unlocking (SmartKey) ........ 61
Locking/unlocking manually ............ 65
Central locking system
see Central locking
6Index
Operator's ManualGeneral notes ................................. .23
Vehicle equipment ........................... 23
Outline lamp
Replacing bulbs ............................... 94
Outside temperature display ........... 161
Overhead control panel ...................... 38
Overrevving range ............................. 161
Overrun cutoff ................................... 132
P
Paintwork (cleaning instructions) ... 236
Paper holder ...................................... 208
Parking ............................................... 129
Important safety notes .................. 129
Parking brake ................................ 130
Wheel chock .................................. 131
see PARKTRONIC
Parking aid
see PARKTRONIC
Parking assistance
see PARKTRONIC
Parking brake
Display message ............................ 184
Notes/function .............................. 130
Parking brake
see Parking brake
Parking lamps
Replacing bulbs ............................... 91
Switching on/off .............................. 82
PARKTRONIC
Deactivating/activating ................. 152
Driving system ............................... 150
Function/notes ............................. 150
Important safety notes .................. 150
Problem (malfunction) ................... 153
Range of the sensors ..................... 150
Roll-back warning .......................... 152
Trailer towing ................................. 152
Warning display ............................. 151
Partition sliding door
Important safety notes .................... 71
Opening/closing .............................. 71
Passenger compartment air-condi-
tioning system
see Climate control Passenger compartment heating
see Climate control
Perimeter lamp
Replacing bulbs ............................... 93
Perimeter/side marker lamp
Changing bulbs ................................ 91
Pets in the vehicle ............................... 54
Plastic trim (cleaning instruc-
tions) .................................................. 239
Power assistance for the steering
Display message ............................ 194
Warning lamp ................................. 204
Power supply
Battery isolating switch ................. 118
Switching off .................................. 119
Switching on .................................. 119
Power take-off
Engine speed setting ..................... 153
Power washers .................................. 235
Power windows
see Side windows
Preparing for a journey
Checks in the vehicle ..................... 120
Visual check of the vehicle exte-
rior ................................................. 120
Protection of the e
nvironment
General notes .................................. 25
Pulling away ...................................... 121
Q
QR code
Rescue card ..................................... 30
Qualified specialist workshop ........... 27
R
Radiator cover..................................... 29
Radio
Changing stations (vehicles with
steering wheel buttons) ................. 166
see separate operating instructions
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 27
Rain and light sensor
Setting the sensitivity (vehicles
with steering wheel buttons) ......... 171
Index15
XBrake immediately in order to increase the
distance from the vehicle in front.
or
XTake evasive action provided it is safe to do
so.
If you want the distance warning function to
assist you, the function must be activated and
operational.
Due to the nature of the system, particularly
complicated driving conditions may cause the
system to display an unnecessary warning.
With the help of the radar sensor system, the
distance warning function can detect obstacles
that are in the path of your vehicle for an exten-
ded period of time.
Up to a speed of 45 mph (70 km/h), the distance
warning function can also react to stationary
obstacles, such as stopped or parked vehicles.
If you approach an obstacle and the distance
warning function detects a risk of a collision, the
system will alert you both visually and acousti-
cally.
In particular, the detection of obstacles can be
impaired in the case of:
Rdirt, ice or anything else covering the sensors
Rsnow or heavy rain
Rinterference from other radar sources
Rthere are strong radar reflections, for exam-
ple in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
Following damage to the front end of the vehicle,
have the configuration and operation of the
radar sensor checked at a qualified specialist
workshop. This also applies to collisions at slow
spe eds w
here there is no visible damage to the
front of the vehicle.
Activating/deactivating the distance
warning function
When you switch on the engine, the distance
warning function switches on after a few sec-
onds.
XTo deactivate: press theæbutton
(Ypage 37).
Vehicles without steering wheel buttons:
the Ä warning lamp in the instrument clus-
ter lights up and the OFF
message flashes. The
message then disappears and the Äindi-
cator lamp remains lit. Vehicles with steering wheel buttons:
the
Ä warning lamp in the instrument cluster
flashes and the Distance
WarningSystemDeactivatedmessage appears .The mes-
sage then disappears and the Äwarning
lamp remains lit.
XTo activate: press theæbutton again
(Ypage 37).
Vehicles without steering wheel buttons:
the Ä warning lamp in the instrument clus-
ter lights up and the on
message flashes. The
message then disappears and the Äindi-
cator lamp goes out.
Vehicles with steering wheel buttons: the
Ä warning lamp in the instrument cluster
flashes and the Distance
WarningSystemActivatedmessage appears in the multi-
function display. The message then disap-
pears and the indicator lamp Ägoes out.
Adaptive Brake Assist
iObserve the "Important safety notes" sec-
tion for driving safety systems (Ypage 54).
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rto stationary obstacles
Rwhen cornering
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
142Driving systems
Driving and parking
Always pay careful attention to the traffic sit-uation and be ready to brake.
Adaptive Brake Assist aids you when braking
during hazardous situations at speeds above
20 mph (30 km/h). With the help of Adaptive
Brake Assist, the distance warning signal can
detect obstacles that are in the path of your
vehicle for an extended period of time.
When you approach an obstacle and adaptive
Brake Assist detects that there is a risk of a col- lision, adaptive Brake Assist calculates the brak-
ing force necessary to avoid a collision. Should
you apply the brakes forcefully, adaptive Brake
Assist will automatically increase the braking
force to the calculated level.
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes function as usual again if:
Ryou release the brake pedal
Rthere is no longer any danger of a collision
Rno obstacle is detected in front of your vehicle
Adaptive Brake Assist is then deactivated.
Up to the maximum vehicle speed, adaptive
Brake Assist can react to moving obstacles that
have already been recognized as such at least
once over the period of observa tion. Ad
aptive
Brake Assist does not react to stationary obsta-
cles.
In particular, the detection of obstacles can be
impaired if:
Rdirt, ice or anything else covering the sensors
Rsnow or heavy rain
Rinterference from other radar sources
Rthere are strong radar reflections, for exam-
ple in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
If adaptive Brake Assist is not available due to a
malfunction in the radar sensor system, the full
brake boosting effect with the help of BAS
remains available.
Following damage to the front end of the vehicle,
have the configuration and operation of the
radar sensor checked at a qualified specialist
workshop. This also applies to collisions at slow
speeds where there is no visible damage to the
front of the vehicle.
Lane Tracking package
Blind Spot Assist
General notes
Blind Spot Assist monitors the areas on either
side of the vehicle that are not visible to the
driver with two lateral, rear-facing radar sensors
in the bumper. It supports you from speeds of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your atten-
tion to vehicles detected in the monitored area. If you then switch on the corresponding turn
signal to change lane, you will also receive an
optical and audible collision warning.
Important safety notes
GWARNING
Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of
an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
iUSA only:
This device has been approved by the FCC as
a "Vehicular Radar System". The radar sensor
is intended for use in an automotive radar
system only. Removal, tampering, or altering
of the device will void any warranties, and is
not permitted by the FCC. Do not tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
Driving systems143
Driving an d parking
Z
Monitoring range of the sensors
In particular, the detection of obstacles can be
impaired in the case of:
Rdirt, ice or anything else covering the sensors
Rpoor visibility, e.g. due to fog, heavy rain or
snow
Rnarrow and short vehicles, e.g. motorcycles
or bicycles
Rvery wide lanes
Rnarrow lanes
Rvehicles not driving in the middle of their lane
Rbarriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area approx-
imately 10 ft (3.0 m) behind your vehicle and
approximately 1.6 ft (0.5 m) to 11.5 ft (3.5 m)
each side of it. The monitoring range behind the
vehicle may also be larger depending on the sit-
uation.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if the vehicles are driving on the inner side
of their lane.
Due to the nature of the system:
Rwarnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rwarnings may be interrupted when driving
alongside particularly long vehicles, for exam-
ple trucks, for a prolonged time. The two sensors for Blind Spot Assist are inte-
grated into the sides of the rear bumper. Make
sure that the bumper is free of dirt, ice or slush
in the vicinity of the sensors. The radar sensors
must not be covered, for example by rear-moun- ted cycle racks or overhanging loads. Following
a severe impact or in the event of damage to the
bumper, have the function of the radar sensors
checked at a qualified specialist workshop.
Blind Spot Assist may otherwise not work prop- erly.
Indicator and warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
:Yellow indicator lamp and red warning lamp
If yellow indicator lamp :lights up:
Ryou are driving at less than 20 mph (30 km/h)
RBlind Spot Assist is deactivated
RBlind Spot Assist is malfunctioning
Blind Spot Assist is active from a speed of
20 mph (30 km/h). If a vehicle is detected in the
blind spot monitoring range, red warning
lamp :on the corresponding side lights up.
This warning occurs when a vehicle enters the
blind spot monitoring range from behind or from
the side. When you overtake a vehicle, the warn- ing only occurs if the difference in speed is less
than 14 mph (22 km/h).
Yellow indicator lamp :goes out if reverse gear
is engaged. Blind Spot Assist is then deactiva-
ted.
The brightness of the indicator/warning lamps
is adjusted automatically according to the
brightness of the ambient light.
144Driving systems
Driving and parking
The sensors must be free of dirt, ice or slush.
Otherwise, they cannot function correctly.
Clean the sensors regularly, taking care not to
scratch or damage them (
Ypage 237).
Front sensors
CenterApprox. 39 in
(100 cm)
CornersApprox. 26 in (65 cm)
Rear sensors
CenterApprox. 71 in
(180 cm)
CornersApprox. 39 in
(100 cm)
Minimum distance
CenterApprox. 12 in (30 cm)
Front corner sensorsApprox. 10 in (25 cm)
Rear corner sensorsApprox. 12 in (30 cm)
If an obstacle is within this range, all segments
of the warning displays light up and you hear awarning tone. If the distance between the vehi-
cle and the obstacle falls below the minimum
range, it is possible that the distance may no
longer be displayed.
Warning displays
Warning display, front area
Warning display for the left-hand rear area in the
left-hand exterior mirror
:
Warning segments for the left front area
;Warning segments for the right front area
=Operational readiness symbol for the front
area
?Warning display segments
AOperational readiness symbol for the rear
area
The warning displays show the distance
between the sensor and the obstacle.
The warning display is divided into five yellow
and two red segments for each side of the vehi- cle. PARKTRONIC is operational if yellow indi-
cator segments =and Aare lit.
There is a malfunction if only the red segments
of the warning display light up .
The position of the gear lever determines
whether the front and/or rear area is monitored.
Driving systems151
Driving and parking
Z
Problems with PARKTRONIC
ProblemPossible causes/consequences andMSolutions
Only the red segments in
the PARKTRONIC warn-
ing displays are lit.
In addition, a warning
tone sounds for approx.
two seconds
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds.
The indicator lamp of the
f button lights up
and the red segments in
the PARKTRONIC warn-
ing display go out.PARKTRONIC has malfunctioned and has switched itself off.
XIf problems persist, have PARKTRONIC checked at a qualified spe- cialist workshop.
The PARKTRONIC warn-
ing displays implausible
distances.
For example, all the seg-
ments may be lit even
though there is no obsta-
cle present.The PARKTRONIC sensors are dirty or iced up.
XClean the PARKTRONIC sensors (Ypage 237).
XTurn the key to position 2in the ignition lock.
The license plate or other parts attached near the sensors may not be
secured correctly.
XCheck the license plate and attachment parts near the sensors for
correct seating.
An external radio or ultrasonic source may be causing interference.
XCheck PARKTRONIC functions in a different location.
Rear view camera
Important safety notes
The rear view camera is only an aid. It cannot
replace your own awareness of the immediate
surroundings. You are responsible for safe
maneuvering, parking and pulling away. When
maneuvering, parking and pulling away, make
sure that there are no persons, animals or
objects in the maneuvering area.
The rear view camera is a visual parking aid.
Information on operation can be found in the
separate Audio 15 supplement.
The camera is in the middle of the roof above the
high-mounted brake lamp (
Ypage 237).
You can find information on cleaning the camera
in the "Maintenance and care" section
(
Ypage 237).
Working mode
ADR (working speed governor)
General notes
When activated, ADR automatically increases
the engine speed to a preset speed or a speed
you have set.
iAfter a cold start, the idling speed of the
engine is increased automatically. If the pre-
set working speed is lower than the increased idling speed, the working speed is only
reached once the engine has completed the
warm-up phase.
It is only possible to activate ADR with the
vehicle stationary and the parking brake
applied.
The selector lever of the automatic transmis-
sion must be in position P.
Working mode153
Driving and parking
Z