
114LightingThe control indicator í illuminates
continuously in the instrument cluster
when the assist is activated, while the blue control indicator 7 3 105
illuminates when high beam is on.
Control indicator í 3 105.
Note
Use of the system does not relieve
the driver from full responsibility for
vehicle operation.
Deactivation
Pull the stalk again. Control indicator
í extinguishes.
High beam assist is also deactivated when the outer light switch is moved
out of the AUTO position.
Note
Depending on version, the system
can be also be deactivated via the
Infotainment system. Refer to
Infotainment manual for further
information.General information
Performance of the system can be
affected due to the following:
● Extreme weather conditions, e.g.
heavy rain, fog or snow.
● The front camera or the windscreen is obstructed, e.g. bya portable navigation system.
● Oncoming or preceding vehicle lights are not detected.
● Headlights are not adjusted correctly.
● Various reflective surfaces may also cause the system to fail to
detect other vehicles.
Headlight flash To activate the headlight flash, pull
stalk.Headlight range adjustment
Manual headlight range
adjustment
With low beam switched on, adapt the
headlight range to suit the vehicle
load to prevent dazzling of oncoming
traffic.
Turn knurled wheel to required
position:
0:front seat occupied4:loaded up to permissible
maximum weight

120Climate controlClimate controlClimate control systems.............120
Heating and ventilation system 120
Air conditioning system ...........121
Electronic climate control system .................................... 122
Rear heating system ...............124
Rear air conditioning system ...126
Auxiliary heater ........................127
Air vents ..................................... 133
Adjustable air vents .................133
Fixed air vents ......................... 134
Glovebox cooler ......................134
Maintenance .............................. 134
Air intake ................................. 134
Air conditioning regular operation ................................ 134
Service .................................... 134Climate control systems
Heating and ventilation system
Controls for: ● temperature
● fan speed
● air distribution
● demisting and defrosting
Heated rear window Ü 3 45.
Heated seats ß 3 54.
Temperaturered:warmblue:cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Fan speed
Adjust the air flow by switching the fan to the desired speed.
Air distribution
M:to head areaL:to head area and foot wellK:to foot wellJ:to windscreen, front door
windows and foot wellV:to windscreen and front door
windows
Intermediate settings are possible.
Demisting and defrosting the
windows
● Set temperature control to warmest level.
● Set fan speed to highest level.

Climate control123For correct operation, do not cover
the sensor on the instrument panel.
Automatic mode
Basic setting for maximum comfort: ● Press AUTO ("AUTO" appears in
the display).
● Set desired temperature (the temperature appears in the
display).
● Open all air vents.
During automatic mode, the settings
for fan speed, air distribution, air
conditioning and air recirculation are
automatically regulated by the system and are not shown on the display.
Temperature preselection
Temperatures can be set to the
desired value with the two buttons
below the display.
For reasons of comfort, change
temperature only in small increments.red:warmblue:coldHeating will not be fully effective until
the engine has reached normal
operating temperature.
If the minimum temperature of 15 ℃
is set, the electronic climate control
system runs at maximum cooling.
If the maximum temperature of 27 ℃
is set, the electronic climate control
system runs at maximum heating.
Note
If the temperature is to be reduced
for climate comfort reasons, an
Autostop can be inhibited or the
engine will restart automatically
when cooling is switched on.
Stop-start system 3 140.
Fan speed
Fan speed can be increased or
decreased with the x buttons.
The selected fan speed is indicated
with x in the display.
If the fan is switched off, the air
conditioning is also deactivated.
To return to automatic mode: Press AUTO .Demisting and defrosting the
windows
Press V. The LED illuminates.
Temperature and air distribution are
set automatically, air conditioning is
switched on and the fan runs at a high
speed.
Heated rear window, heated exterior
mirrors are also switched on
automatically. Press Ü to switch off
without deactivating demisting/
defrosting of the windows. The fan
speed can also be decreased.
To return to automatic mode: press
V or AUTO .
Note
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If V is pressed while the engine is
in an Autostop, the engine will restart
automatically.
Stop-start system 3 140.
Air distribution Press ï or î repeatedly.

136Driving and operatingDriving and
operatingDriving hints ............................... 137
Driving economically ...............137
Control of the vehicle ...............137
Steering ................................... 137
Starting and operating ...............138
New vehicle running-in ............138
Ignition switch positions ...........138
Starting the engine ..................139
Idle speed control ....................140
Overrun cut-off ........................ 140
Stop-start system ....................140
Parking .................................... 143
Air suspension ......................... 144
Engine exhaust .......................... 146
Diesel particle filter ..................146
Catalytic converter ...................146
AdBlue ..................................... 147
Manual transmission ..................154
Manual transmission automa‐ ted .............................................. 155
Transmission display ...............155
Starting the engine ..................155
Selector lever .......................... 155Manual mode........................... 156
Electronic driving programmes 157
Fault ........................................ 158
Interruption of power supply ....158
Brakes ........................................ 158
Antilock brake system .............158
Parking brake .......................... 159
Brake assist ............................. 160
Hill start assist ......................... 160
Ride control systems .................161
Traction Control system ..........161
Electronic stability program .....162
Limited-slip rear axle ...............163
Driver assistance systems .........164
Cruise control .......................... 164
Speed limiter ........................... 166
Active emergency braking .......167
Parking assist .......................... 169
Rear view camera ...................171
Lane departure warning ..........173
Fuel ............................................ 175
Fuel for diesel engines ............175
Refuelling ................................ 175
Trailer hitch ................................ 177
General information .................177
Driving characteristics and towing tips .............................. 177
Trailer towing ........................... 177Towing equipment ...................178
Trailer stability assist ...............178
Auxiliary features .......................178
Power take-off ......................... 178

Driving and operating147Malfunction indicator light 3 101.
AdBlue
General information The selective catalytic reduction
(BlueInjection) is a method to
substantially reduce the nitrogen
oxides in the exhaust emission. This
is achieved by injecting a Diesel
Exhaust Fluid (DEF) into the exhaust
system.
The designation of this fluid is
AdBlue ®
. It is a non-toxic, non-
flammable, colourless and odourless
fluid which consists of 32% urea and
68% water.9 Warning
Avoid contact of your eyes or skin
with AdBlue.
In case of eye or skin contact,
rinse off with water.
Caution
Avoid contact of the paintwork with AdBlue.
In case of contact, rinse off with water.
AdBlue freezes at a temperature of
approx. -11 °C. As the vehicle is
equipped with an AdBlue pre-heater,
the emissions reduction at low
temperatures is ensured. The AdBlue
pre-heater works automatically.
AdBlue gauge
In versions without AdBlue level
warnings in the Driver Information
Centre, an AdBlue gauge is present,
which shows the current AdBlue fluid
level remaining in the tank.
AdBlue gauge 3 95.
Level warnings
The AdBlue consumption is approx.
3.5 l per 1000 km and depends on the driving behaviour.
Version with level warnings in the
Driver Information Centre
If the AdBlue level falls below a
certain value, a level warning will be
displayed in the Driver Information Centre 3 106.

148Driving and operating
Additionally, control indicator ú
illuminates continuously together with a warning chime.
Refill the AdBlue tank as soon as
possible. Refer to "Refilling AdBlue"
below.
If AdBlue is not refilled within a certain
distance, further level warnings are
displayed in the Driver Information
Centre depending on the current
AdBlue level.
Engine restarts prevented
Subsequent requests to refill AdBlue
and finally the announcement that an engine restart will be prevented are
displayed in the Driver Information
Centre.
Note
These restrictions are a legal
requirement.
Before the prevention of an engine restart, a warning message with
0 km is displayed in the Driver
Information Centre, indicating that
after switching off the ignition an
engine restart will be prohibited.
After the prevention of an engine
start, a warning message is displayed in the Driver Information Centre
reminding the driver that AdBlue level
is insufficient.
To allow the engine to be restarted,
the tank should be refilled completely
or with a volume of at least 10 l of
AdBlue, depending on AdBlue
consumption.Warning stages: level warnings,
engine restarts prevented 1. ú illuminates after the ignition is
switched on with warning
message LEVEL ADBLUE LOW :
Driving is possible without any
restrictions.
Refill the AdBlue tank as soon as
possible.
2. ú illuminates during driving with
warning message TOP UP
ADBLUE :
Possible loss of engine power. Refill the AdBlue tank as soon as
possible.
3. ú illuminates during driving with
warning message XXX KM STOP
ADD ADBLUE :
Vehicle speed may be limited to
20 km/h after switching the engine
off and on again until the range is
reduced to 0 km.
Refill the tank completely or with a volume of at least 10 l of AdBlue
(depending on AdBlue

Driving and operating149consumption) as soon as
possible.
4. Y illuminates during driving with
warning message 0 KM STOP
ADD ADBLUE :
The engine cannot be restarted
after switching off the ignition.
To allow the engine to be
restarted, refill the tank
completely or with a volume of at
least 10 l of AdBlue (depending on AdBlue consumption) as soon as
possible.
Illumination of control indicator Y may
be accompanied by a warning chime.
Warning chimes 3 108.High emission warnings
If the exhaust emission rises above a
certain value, warnings similar to the
range warnings as described above
will be displayed in the Driver
Information Centre. Control indicator
ú illuminates continuously together
with j 3 101 and a warning chime.Requests to have the exhaust system
checked and finally the
announcement that an engine restart
will be prevented are displayed in the Driver Information Centre.
Note
These restrictions are a legal
requirement.
At an AdBlue range of 1100 km, a
warning message is displayed in the
Driver Information Centre showing
the remaining distance the vehicle
can travel before engine restarts are
prevented. This warning message is
repeated every 100 km.
Seek the assistance of a workshop as
soon as possible.Warning stages: high emission
warnings 1. ú and A illuminate with warning
message CHECK ANTI-
POLLUTION :
Fault in the system that may result in a loss of engine power.
Seek the assistance of a
workshop as soon as possible.2. ú and A illuminate with warning
message ANTIPOLLUTION xxx
KM FAIL :
Indicates that in less than 1100 km an engine restart will be
prohibited after switching off the
ignition.
This warning message will be
repeated every 100 km.
Vehicle speed may be limited to
20 km/h after switching the engine
off and on again until the range is
reduced to 0 km.
Seek the assistance of a
workshop as soon as possible.
3. ú and j illuminate with warning
message ANTIPOLLUTION 0 KM
FAILURE :
The engine cannot be restarted
after switching off the ignition.
Seek the assistance of a
workshop.
Illumination of control indicators ú
and j may be accompanied by a
warning chime.
Warning chimes 3 108.

150Driving and operatingVersion without level warnings in the
Driver Information Centre
When the AdBlue gauge shows the
level is very low, control indicator ú
first illuminates continuously, then as
AdBlue level drops to a certain
amount ú flashes for a few seconds
then illuminates continuously.
Refill the AdBlue tank as soon as
possible. Refer to "Refilling AdBlue"
below.
Driving is possible without any
restrictions.
Engine power loss
As the AdBlue level drops further,
control indicator ú flashes for a few
seconds then illuminates
continuously, accompanied by a
warning chime and loss of engine
power.
Note
These restrictions are a legal
requirement.
If AdBlue is not refilled before the tank
is empty, ú flashes and after the next
engine restart the vehicle speed will
be limited to approx. 20 km/h.
Immediately refill the tank completely or with a volume of at least 10 l of
AdBlue, depending on AdBlue
consumption.Warning stages: level warnings,
engine power loss
1. Range A. No control indicator:
Driving is possible without any
restrictions.
2. Range B. Control indicator ú
illuminates:
Refill the AdBlue tank as soon as
possible.
3. Range C. Control indicator ú
flashes for a few seconds each
time the ignition is switched on,
then illuminates continuously:
Refill the AdBlue tank as soon as
possible.