
Climate control119Fan speed
Adjust the air flow to select the
desired speed.
turn clockwise:increase air flowturn anti-clock‐
wise:decrease air flow
Combi
Additional air conditioning is supplied
to the rear passenger compartment
via the air vents located above the
driver and front passenger
compartment.
With the front passenger
compartment air conditioning system
switched on, adjust the air flow to
select the desired speed.
Ensure the air vents are open when in use, to prevent ice forming in the
system due to lack of air movement.
Auxiliary heater
Coolant heater The engine-independent, fuel-
powered coolant heater provides
rapid heating of the engine coolant to
enable heating of the vehicle interior
without the engine running.
Note
Depending on version, an additional
coolant heater may be switched on
automatically to speed up heating
when the ignition is on and the
outside temperature is below 5 ℃.9 Warning
Do not operate the system when
refuelling, when dust or
combustible vapours are present
or in enclosed spaces (e.g.
garage).
Before starting or programming the
system to start, turn the vehicle's
climate control system to heat, set the
air distribution to V and turn the fan
on.
Switch off when not required. Heating stops automatically after the
programmed runtime. It will also
cease to operate if the vehicle fuel
level drops too low.
During operation, power from the
vehicle battery is used. The driving
time should therefore be at least as
long as the heating time. For short
journey times, check the vehicle
battery regularly and recharge if
necessary.
To ensure efficient performance,
briefly operate the auxiliary heater
once a month.

Climate control123To temporarily adjust the heating
duration, adjust with q or r and
confirm. The value can be set from
ten to 120 minutes. Due to the power
consumption, note the heating
duration.
To switch off, select Y in the menu bar
again and confirm.
Ventilation x
Select x in the menu bar and confirm.
The ventilation duration can be
accepted or adjusted. The duration
shown is accepted without
confirmation.
To switch off, select x in the menu bar
again and confirm.
Programming P
Up to three preset departure times can be programmed, either during
one day or over one week.
● Select P in the menu bar and
confirm.
● Select desired preset memory number 1, 2 or 3 and confirm.
● Select day and confirm.
● Select hour and confirm.● Select minutes and confirm.
● Select Y or x and confirm.
● If necessary, adjust the runtime duration prior to departure and
confirm.
The next preset memory number to
be activated is underlined and the
weekday is displayed. Repeat the
procedure to programme the other
preset memory numbers.
Pressing X during the procedure will
exit without storing programme
adjustments.
To delete a preset departure time,
follow the steps for programming until
heating symbol Y flashes. Press q
or r until oFF appears in the display
and confirm.
Heating stops automatically
five minutes after the programmed
departure time.
Note
The remote control system features a temperature sensor which
calculates the runtime according to the ambient temperature and thedesired heating level (ECO or
HIGH). The system startsautomatically between five and
60 minutes prior to the programmed
departure time.
Set weekday, time and heating
duration Ö
If the vehicle battery is disconnected
or its voltage is too low, the unit will
need to be reset.
● Select Ö and confirm.
● Select weekday and confirm.
● Change hours and confirm.
● Change minutes and confirm. ● Change the default heating duration and confirm.
Heating level Y
The preferred heating level for
programmed departure times can be set to either ECO or HIGH.
Select Y and confirm. ECO or HIGH
flashes in the display. Adjust using
q or r and confirm.
Operation (Type D)
Heating Y or Ventilation x
Select the operating mode Y or x, if
necessary.

128Driving and operatingDriving and
operatingDriving hints ............................... 129
Driving economically ...............129
Control of the vehicle ...............129
Steering ................................... 129
Starting and operating ...............130
New vehicle running-in ............130
Ignition switch positions ...........130
Starting the engine ..................130
Idle speed control ....................131
Overrun cut-off ........................ 131
Stop-start system ....................132
Parking .................................... 134
Air suspension ......................... 135
Engine exhaust .......................... 137
Diesel particle filter ..................137
Catalytic converter ...................137
AdBlue ..................................... 138
Manual transmission ..................145
Manual transmission automa‐ ted .............................................. 145
Transmission display ...............145
Starting the engine ..................146
Selector lever .......................... 146Manual mode........................... 147
Electronic driving programmes 147
Fault ........................................ 148
Interruption of power supply ....149
Brakes ........................................ 149
Antilock brake system .............149
Parking brake .......................... 150
Brake assist ............................. 151
Hill start assist ......................... 151
Ride control systems .................151
Traction Control system ..........151
Electronic stability program .....152
Limited-slip rear axle ...............154
Driver assistance systems .........154
Cruise control .......................... 154
Speed limiter ........................... 158
Parking assist .......................... 158
Rear view camera ...................160
Lane departure warning ..........162
Fuel ............................................ 163
Fuel for diesel engines ............163
Refuelling ................................ 164
Fuel consumption - CO 2-
Emissions ............................... 165
Trailer hitch ................................ 166
General information .................166
Driving characteristics and towing tips .............................. 166
Trailer towing ........................... 166Towing equipment ...................167
Trailer stability assist ...............167
Auxiliary features .......................167
Power take-off ......................... 167

Driving and operating129Driving hints
Driving economically
ECO mode ECO mode is a function that
optimises fuel consumption. It affects
engine power and torque,
acceleration, gear shift indication,
heating, air conditioning and electrical consumers.
ActivationPress ECO. Control indicator
illuminates when activated and a corresponding message appears in
the Driver Information Centre 3 98.
During driving, it is possible to
temporarily disable ECO mode, e.g.
to increase engine performance, by
depressing the accelerator pedal
firmly.
ECO mode is reactivated when
pressure is reduced on the
accelerator pedal.
Deactivation
Press ECO again. Control indicator
extinguishes.
Control of the vehicle
Never coast with engine not
running (except during Autostop)
Many systems will not function in this
situation (e.g. brake servo unit, power
steering). Driving in this manner is a
danger to yourself and others. All
systems function during an Autostop,
but there will be a controlled reduction
in power steering assist and vehicle
speed is reduced.Stop-start system 3 132.
Pedals To ensure the pedal travel is
uninhibited, there must be no mats in
the area of the pedals.
Use only floor mats which fit properly
and are fixed by the retainers on the
driver's side.
Steering
If power steering assist is lost
because the engine stops or due to a system malfunction, the vehicle can
be steered but may require increased
effort.Caution
Vehicles equipped with hydraulic
power steering:
If the steering wheel is turned until it reaches the end of its travel, and
is held in that position for more
than 15 seconds, damage may
occur to the power steering
system and there may be loss of
power steering assist.

130Driving and operatingStarting and operating
New vehicle running-in
Do not brake unnecessarily hard for
the first few journeys and after new
disc brake pads have been fitted.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period fuel and engine oil consumption may be
higher and the cleaning process of
the diesel particle filter may take
place more often. Autostop may be
inhibited to allow for charging the
vehicle battery.
Stop-start system 3 132.
Diesel particle filter 3 137.Ignition switch positions0:ignition off1:steering wheel lock released,
ignition off2:ignition on
diesel engines: preheating3:starting
Steering wheel lock
Remove key from ignition switch and
turn steering wheel until it engages.
9 Danger
Never remove the key from
ignition switch during driving as
this will cause steering wheel lock.
Starting the engine
Manual transmission: operate clutch.
Manual transmission automated:
operate brake; transmission
automatically shifts to N.
Do not accelerate.

Driving and operating131Turn the key to position 2 for
preheating, and hold until control
indicator N extinguishes from the
Driver Information Centre.
Turn key to position 3 and release.
The increased engine speed
automatically returns to normal idling
speed as the engine temperature
rises.
Start attempts should not last longer than 15 seconds. If engine does not
start, wait 15 seconds before
repeating starting procedure. If
necessary, depress accelerator
before repeating starting procedure.
Before restarting or to switch off the
engine, turn key back to 0.
During an Autostop, the engine can
be started by depressing the clutch
pedal. Stop-start system 3 132.
Turbo engine warm-up
Upon start-up, engine available
torque may be limited for a short time,
especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.Idle speed control
To increase the idle speed press the
switch. After a few seconds the
function will be activated.
The function will be deactivated
when:
● The clutch pedal is depressed.
● The accelerator pedal is depressed.
● MTA is not in N (neutral).
● Vehicle speed is above 0 km/h. ● Control indicator A, W or C
illuminate in the instrument
cluster.
To increase or decrease the fast idle
speed rate, consult a workshop.
Note
When the fast idle function is
activated, the stop-start system is
automatically deactivated.
Stop-start system 3 132.
Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but accelerator pedal is released.
Depending on driving conditions, the
overrun cut-off may be deactivated.

132Driving and operatingStop-start systemThe stop-start system helps to save
fuel and to reduce the exhaust
emission. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam. It starts the engine
automatically as soon as the clutch is
depressed. A vehicle battery sensor
ensures that an Autostop is only
performed if the vehicle battery is
sufficiently charged for a restart.
Activation
The stop-start system is available as soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.Deactivation
Deactivate the stop-start system
manually by pressing Î.
Deactivation is indicated when the
LED in the button illuminates.
Note
When the fast idle function is
activated, the stop-start system is
automatically deactivated and
cannot be reactivated by pressing
Î . LED in button illuminates to
indicate deactivation and a
corresponding message may
appear in the Driver Information
Centre 3 98.
Idle speed control 3 131.
Autostop
If the vehicle is at low speed or
standstill, activate an Autostop as
follows:
● depress the clutch pedal
● shift the selector lever to neutral (manual transmission) or N
(manual transmission
automated)
● release the clutch pedal
The engine will be switched off while
the ignition stays on if the required conditions are met.

Driving and operating133An Autostop is indicated when Ï
illuminates green in the instrument
cluster.
During an Autostop, the heating
performance, power steering and
brake performance will be
maintained. Brake assist, however, is
not available 3 151.
Note
If you exit the vehicle while the
engine is in an Autostop, a warning
chime will sound as a reminder that
the engine is on standby and has not been switched off.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled,
otherwise an Autostop will be
inhibited and control indicator \ will
illuminate in the instrument cluster.
● the stop-start system is not manually deactivated
● the bonnet is fully closed
● the driver's door is closed or the driver's seat belt is fastened
● the vehicle battery is sufficiently charged and in good condition● the engine is warmed up
● the engine coolant temperature is
not too high
● the ambient temperature is not too low
● the defrosting function is not activated
● the climate control system does not inhibit an Autostop
● the brake vacuum is sufficient ● the self-cleaning function of the diesel particle filter is not active
● the vehicle has moved since the last Autostop
Otherwise an Autostop will be
inhibited.
An Autostop may become
unavailable as the ambient
temperature approaches freezing
point.
Certain settings of the climate control system may also inhibit an Autostop.See "Climate control" chapter for
further information 3 112.
Immediately after motorway driving
an Autostop may be inhibited.Autostop may also be inhibited
temporarily if the vehicle battery has
been recharged by an external
source.
New vehicle running-in 3 130.
Vehicle battery discharge protection
To ensure reliable engine restarts,
several vehicle battery discharge
protection features are implemented
as part of the stop-start system.
Restart of the engine by the driver
Depress the clutch pedal to restart the
engine.
If the selector lever has been shifted
out of neutral (manual transmission)
or N (manual transmission
automated) or other conditions are
not met, start using the ignition key.
The green control indicator Ï will
extinguish in the instrument cluster
when the engine is restarted.
If the selector lever is shifted out of
neutral (manual transmission) or N
(manual transmission automated) before depressing the clutch first, a
restart will not take place.