Page 143 of 331

Climate control141
Controller and buttons for the
following functions:
■ temperature TEMP
■ air distribution l M K
■ fan speed Z
■ automatic mode AUTO
■ cooling A/C
■ air recirculation 4
■ demisting and defrosting V
■ system ON/OFF X
Heated rear window Ü 3 41.
Heated front seats ß 3 53.
Ventilated front seats A 3 53.
Heated steering wheel * 3 87.
Indication
Settings of temperature and fan
speed are indicated in the climate
display.
Each change of settings is shown in
the Info-Display for a few seconds.
The electronic climate control system
is only fully operational when the
engine is running.
Climate control system settings are
saved in the key used to lock the vehicle.
Automatic mode AUTO
Basic setting for maximum comfort:
■ Press AUTO, the air distribution
and fan speed are regulated
automatically. Activation is
indicated by the LED in the button.
■ Press A/C to switch on optimal
cooling and demisting. Activation is indicated by the LED in the button.
■ Set temperature by turning controller TEMP. Suggested
comfort setting is 22 °C.
■ Open all air vents to allow optimised air distribution in
automatic mode.
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Climate control145
■automatic mode AUTO
■ cooling A/C
■ air recirculation 4
■ demisting and defrosting V
■ system ON/OFF X
■ dual zone temperature
synchronisation SYNC
Heated rear window Ü 3 41.
Heated front seats ß 3 53.
Ventilated front seats A 3 53.
Heated steering wheel * 3 87.
IndicationTemperature settings are indicated
for driver and passenger side
separately on the panels.
Each change of settings is shown in
the Info-Display for a few seconds.
The dual automatic climate control
system is only fully operational when
the engine is running.
Climate control system settings are
saved in the key used to lock the vehicle.
Automatic mode AUTOBasic setting for maximum comfort: ■ Press AUTO, the air distribution
and fan speed are regulated
automatically. Activation is
indicated by the LED in the button.
■ Press A/C to switch on optimal
cooling and demisting. Activation is indicated by the LED in the button.
■ Set temperature by touching R or
S on the driver side. Suggested
comfort setting is 22 °C.
Temperature can be set differently
for driver and passenger. Touch R
or S on the passenger side to allow
different temperature zones.
■ Open all air vents to allow optimised air distribution in
automatic mode.
Setting of fan speed regulation in
automatic mode can be changed in the vehicle personalisation menu in
the Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle , in the Colour-Info-Display.
Colour-Info-Display 3 118.
Vehicle personalisation 3 122.
Page 151 of 331
Climate control149
Vehicle personalisation 3 122.
Auxiliary heater Air heater
Quickheat is an electric auxiliary air
heater which automatically warms up
the passenger compartment more
quickly.Air vents
Adjustable air vents Front air vents
To open the vent, turn the adjuster
wheel to B. Adjust the air amount at the
vent outlet by turning the adjuster
wheel.
Direct the flow of air by tilting and swivelling the slats.
To close the vent, turn the adjuster
wheel to 7.
Page 154 of 331

152Driving and operatingDriving and operatingDriving hints............................... 152
Starting and operating ...............153
Engine exhaust .......................... 160
Automatic transmission .............. 164
Manual transmission ..................168
Drive systems ............................ 169
Brakes ........................................ 169
Ride control systems .................172
Driver assistance systems .........177
Fuel ............................................ 210
Trailer hitch ................................ 218Driving hints
Control of the vehicleNever 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 3 157.
Pedals
To ensure the pedal travel is
uninhibited, there must be no mats in the area of the pedals.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.
Control indicator c 3 107.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.
Page 155 of 331

Driving and operating153Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
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.
Diesel particle filter 3 160.
Ignition switch positions
Turn key:0=ignition off: Some functions
remain active until key is removed or driver's door is
opened, provided the ignition was
on previously1=accessory power mode: Steering
wheel lock released, some
electrical functions are operable,
ignition is off2=ignition on power mode: Ignition
is on, diesel engine is preheating. Control indicators illuminate and
most electrical functions are
operable3=engine start: Release key after
starting procedure beginsSteering 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.
Power button
Electronic key must be inside the
vehicle.
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154Driving and operating
Accessory power mode: press
Engine Start/Stop once without
operating clutch or brake pedal. The yellow LED in the button illuminates.
Steering wheel lock is released and
some electrical functions are
operable, ignition is off.
Ignition on power mode: press and
hold Engine Start/Stop for 6 seconds
without operating clutch or brake
pedal. The green LED in the button
illuminates, diesel engine is
preheating. Control indicators
illuminate and most electrical
functions are operable.
Engine start: operate clutch pedal
(manual transmission) or brake pedal
(automatic transmission) and press
Engine Start/Stop once more.
Release button after starting
procedure begins.
Ignition off: press Engine Start/Stop
briefly in each mode or when engine
is running and vehicle is stationary.
Some functions remain active until
driver's door is opened, provided the
ignition was on previously.Emergency shut off during driving: press Engine Start/Stop for longer
than 2 seconds or press twice briefly
within 5 seconds 3 155.
Steering wheel lock
The steering wheel lock activates
automatically when:
■ The vehicle is stationary.
■ The ignition has been switched off.
■ The driver's door is opened.
To release steering wheel lock, open
and close driver's door and switch on accessory mode or start the engine
directly.9 Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the
battery of the electronic key is weak,
the Driver Information Centre may
display No Remote Detected or
Replace Battery in Remote Key when
you try to start the vehicle.
Open the centre console storage area by lifting up the armrest. Place the
electronic key in the transmitter
pocket. Depress the clutch pedal
(manual transmission) or the brake
pedal (automatic transmission) and
press Engine Start/Stop .
Page 161 of 331

Driving and operating159
■ The stop-start system is manuallydeactivated.
■ The bonnet is opened.
■ The driver's seat belt is unfastened
and the driver's door is opened.
■ The engine temperature is too low.
■ The charging level of the vehicle battery is below a defined level.
■ The brake vacuum is not sufficient.
■ The vehicle is driven at least at walking speed.
■ The climate control system requests an engine start.
■ The air conditioning is manually switched on.
If the bonnet is not fully closed, a warning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during the restart might be noticeable.Parking9 Warning
■ Do not park the vehicle on an
easily ignitable surface. The
high temperature of the exhaust system could ignite the surface.
■ Always apply the parking brake.
Activate the manual parking
brake without pressing the
release button. Apply as firmly
as possible on a downhill slope
or uphill slope. Depress foot
brake at the same time to
reduce operating force.
For vehicles with electric
parking brake, pull switch m for
approx. one second.
The electric parking brake is
applied when control indicator
m illuminates 3 106.
■ Switch off the engine. ■ If the vehicle is on a level surface or uphill slope, engage
first gear or set the selector lever
to position P before removing
the ignition key. On an uphill
slope, turn the front wheels
away from the kerb.
If the vehicle is on a downhill
slope, engage reverse gear or
set the selector lever to position P before removing the ignition
key. Turn the front wheels
towards the kerb.
■ Close the windows and the sunroof.
■ Remove the ignition key. Turn the steering wheel until the
steering wheel lock is felt to
engage.
For vehicles with automatic
transmission, the key can only
be removed when the selector
lever is in position P.
■
Lock the vehicle with button e on
the radio remote control.
Page 166 of 331

164Driving and operating
8. Unscrew the hose from the fillerneck.
9. Mount the protective cap and turn
clockwise until it engages.
Notice
Dispose of AdBlue canister and
hose according to environmental requirements.
Exchanging AdBlue
If less than 5 litres of AdBlue have
been refilled during the last 2 years,
the remaining fluid should be
exchanged since AdBlue has a
limited durability.Caution
Disregard could lead to damage to
the selective catalytic reduction
system.
Automatic transmission
The automatic transmission permits
automatic gearshifting (automatic
mode) or manual gearshifting
(manual mode).
Manual shifting is possible in manual
mode by tapping the selector lever or pulling the steering wheel paddles
3 166.
Transmission display
The mode or selected gear is shown
in the transmission display.
In automatic mode, the driving
programme is indicated by D in the
Driver Information Centre (DIC).
In manual mode, M and the number
of the selected gear is indicated.
R indicates reverse gear.
N indicates neutral position.
P indicates park position.