Page 110 of 251

108Instruments and controls● If a fault in the automatic lockingsystem is detected.
● If the diesel particle filter has reached the maximum filling
level.
When the vehicle is parked and/or the driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.
Battery voltage
When the vehicle battery voltage is running low, a warning message or
warning code 174 will appear in the
Driver Information Centre.
1. Switch off immediately any electrical consumers which are
not required for a safe ride, e.g.
seat heating, heated rear window
or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.The warning message or warning
code will disappear after the engine
has been started twice consecutively
without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.Trip computer
The menus and functions can be selected via the buttons on the turnsignal lever 3 100.
Press MENU to select the Trip/Fuel
Information Menu , or select W on
the Uplevel-Combi-Display.
Page 131 of 251

Climate control129Notice
If the settings for demisting and
defrosting are selected, an Autostop
will be inhibited.
If the settings for demisting and
defrosting are selected while the
engine is in an Autostop, the engine will restart automatically.
Stop-start system 3 141.
Air conditioning systemIn addition to the heating and
ventilation system, the air
conditioning system has controls for:n:cooling4:air recirculation
Heated seats ß 3 40, Heated
steering wheel * 3 81.
Cooling n
Press
n to switch on cooling.
Activation is indicated by the LED in
the button. Cooling is only functional
when the engine is running and
climate control fan is switched on.
Press n again to switch off cooling.
The air conditioning system cools and
dehumidifies (dries) as soon as the
outside temperature is slightly above
the freezing point. Therefore
condensation may form and drip from under the vehicle.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons. Activated cooling
might inhibit Autostops.
Air recirculation system 4
Press 4 to activate air recirculation
mode. Activation is indicated by the
LED in the button.
Page 133 of 251

Climate control131Notice
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 3 141.
Electronic climate control system
The dual zone climate control allows
different climatisation temperatures
for driver and front passenger side.
In Automatic mode temperature, fan
speed and air distribution are
regulated automatically.
Controls for:
● temperature on driver side
● air distribution
● fan speed
● temperature on front passenger side
n:coolingAUTO:automatic mode4:manual air recirculationV:demisting and defrosting
Heated rear window Ü 3 32, Heated
seats ß 3 40, Heated steering wheel
* 3 81.
Climate control settings are shown on
the Graphic-Info-Display, or
depending on the version, on Colour-
Info-Display. Setting modifications
are briefly popped-up in both
displays, superimposed over the
currently displayed menu.
The electronic climate control system is only fully operational when the
engine is running.
Page 134 of 251

132Climate controlAutomatic mode AUTO
Basic setting for maximum comfort:● Press AUTO, the air distribution
and fan speed are regulated
automatically.
● Open all air vents to allow optimised air distribution in
automatic mode.
● Press n to switch on optimal
cooling and demisting. Activation is indicated by the LED in the
button.
● Set the preselected temperatures for driver and front
passenger using the left and right
rotary knob. Recommended
temperature is 22 °C.
The fan speed regulation in automatic mode can be changed in the menu
Settings .
Vehicle personalisation 3 111.
Temperature preselection
Temperatures can be set to the
desired value.
If the minimum temperature Lo is set,
the climate control system runs at
maximum cooling, if cooling n is
switched on.
If the maximum temperature Hi is set,
the climate control system runs at
maximum heating.
Notice
If n is switched on, reducing the set
cabin temperature can cause the
engine to restart from an Autostop or inhibit an Autostop.
Stop-start system 3 141.
Page 135 of 251

Climate control133Demisting and defrosting the
windows V
●
Press V. Activation is indicated
by the LED in the button.
● Temperature and air distribution are set automatically and the fan
runs at high speed.
● Switch on heated rear window Ü.
● To return to previous mode: press V, to return to automatic
mode: press AUTO.
Setting of automatic rear window
heating can be changed in the menu
Settings in the Info-Display. Vehicle
personalisation 3 111.
Notice
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 3 141.
Manual settings
Climate control system settings can
be changed by activating the buttons
and rotary knobs as follows.
Changing a setting will deactivate the automatic mode.Fan speed Z
Press lower button to decrease or
upper button to increase fan speed as shown in the illustration. The fan
speed is indicated by the number of
segments in the display.
Pressing the lower button longer: fan and cooling are switched off.
Pressing the upper button longer: the
fan runs at maximum speed.
To return to automatic mode: Press
AUTO .
Page 136 of 251

134Climate controlAir distribution s, M , K
Press appropriate button for desired
adjustment. Activation is indicated by
the LED in the button.
s:to windscreen and front door
windowsM:to head area via adjustable air
ventsK:to foot well
All combinations are possible.
Return to automatic air distribution:
press AUTO .
Cooling n
Press n to switch on cooling.
Activation is indicated by the LED in
the button. Cooling is only functional
when the engine is running and
climate control fan is switched on.
Press n again to switch off cooling.
The air conditioning system cools and
dehumidifies (dries) when outside temperature is above a specific level. Therefore condensation may form
and drip from under the vehicle.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons. Activated cooling
might inhibit Autostops.
Stop-start system 3 141.
Depending on the vehicle equipment, the display will indicate AC when
cooling is activated or Eco when the
cooling is deactivated.
Activation or deactivation of cooling
operation after engine start can be
changed in the menu Settings in the
Info-Display. Vehicle personalisation
3 111.
Air recirculation system 4
Press 4 to activate air recirculation
mode. Activation is indicated by the
LED in the button.
Page 140 of 251

138Driving and operatingDriving and
operatingDriving hints ............................... 138
Control of the vehicle ...............138
Steering ................................... 139
Starting and operating ...............139
New vehicle running-in ............139
Ignition switch positions ...........139
Retained power off ..................139
Starting the engine ..................140
Overrun cut-off ........................ 141
Stop-start system ....................141
Parking .................................... 143
Engine exhaust .......................... 144
Diesel particle filter ..................144
Catalytic converter ...................145
Automatic transmission ..............145
Transmission display ...............145
Selector lever .......................... 146
Manual mode ........................... 147
Electronic driving programmes 147
Fault ........................................ 147
Interruption of power supply ....147
Manual transmission ..................148Brakes........................................ 149
Antilock brake system .............149
Parking brake .......................... 150
Brake assist ............................. 151
Hill start assist ......................... 151
Ride control systems .................152
Traction Control system ..........152
Electronic Stability Control ......152
Driver assistance systems .........153
Cruise control .......................... 153
Parking assist .......................... 155
Rear view camera ...................157
Fuel ............................................ 159
Fuel for petrol engines .............159
Fuel for diesel engines ............159
Fuel for liquid gas operation ....159
Refuelling ................................ 161
Fuel consumption - CO 2-
Emissions .............................. 164
Trailer hitch ................................ 165
General information .................165
Driving characteristics and towing tips .............................. 166
Trailer towing ........................... 166
Towing equipment ...................167Driving hints
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 3 141.
Idle boost
If charging of the vehicle battery is
required due to vehicle battery
condition, the power output of the
generator must be increased. This will be achieved by an idle boost whichmay be audible.
On vehicles with Uplevel-Display or
Uplevel-Combi-Display, a message
appears in the Driver Information
Centre.
Page 141 of 251

Driving and operating139PedalsTo 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 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 a higher
or lower steering effort.
Control indicator c 3 96.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.
Starting 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. Autostop may be
inhibited to allow for charging the
vehicle battery.
Diesel particle filter 3 144.Ignition switch positions0:ignition off1:steering wheel lock released,
ignition off2:ignition on, for diesel engine:
preheating3:starting
Retained power off
The following electronic systems can
work until the driver's door is opened
or at the latest for 10 minutes after the
ignition is switched off:
● power windows
● power outlets