Page 123 of 321

Instruments and controls121
■ If adaptive cruise controldeactivates automatically.
■ If approaching a vehicle ahead too closely.
■ If a programmed speed or speed limit is exceeded.
■ If a warning message appears in the Driver Information Centre.
■ If the electronic key is not in the passenger compartment.
■ If the parking assist detects an object.
■ If an unintended lane change occurs.
■ If the diesel particle filter has reached the maximum filling level.
When the vehicle is parked and/ or the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
■ If the trailer hitch is not engaged.
During an Autostop ■ If the driver's door is opened.Battery voltage
When the vehicle battery voltage is running low, a warning message will
appear in the Driver Information
Centre.
1. Switch off any electrical consumers which are not requiredfor 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 will disappear
after the engine has been started
twice without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.Vehicle personalisation
The vehicle's behaviour can be
personalised by changing the settings
in the Colour-Info-Display.
Some of the personal settings for
different drivers can be memorised
individually for each vehicle key.
Memorised settings 3 22.
Depending on vehicle equipment and
country-specific regulations some of
the functions described below might
not be available.
Some functions are only displayed or
active when the engine is running.
Personal settings Following the changing of personal
settings is described via the buttons
below the display. This is valid for
4.2'' as well as 8'' Colour-Info-Display.
Additionally the 8'' display is operable
as a touchscreen and with the
touchpad between the front seats. See description Colour-Info-Display
3 117 and the Infotainment system
manual.
Page 135 of 321

Lighting133Interior lighting
Instrument panel
illumination control
Brightness of the following lights can
be adjusted when the exterior lights
are on:
■ Instrument panel illumination
■ Info-Display
■ Dome light
■ Illuminated switches and operation elements
Turn thumb wheel A and hold until
the desired brightness is obtained.
On vehicles with light sensor, the
brightness can only be adjusted when
the exterior lights are on and the light sensor detects night conditions.
Interior lights
During entry and exit of the vehicle,
the front and rear courtesy lights
automatically switch on and then off
after a delay.
Notice
In the event of an accident with airbag deployment the courtesy
lights are turned on automatically.
Front courtesy lightOperate rocker switch:w=automatic switching on
and off.press u=on.press v=off.
Rear courtesy lights
Illuminate in conjunction with the front courtesy light depending on rocker
switch position.
Reading lights
Operated with s and t buttons in
front and rear courtesy lights.
Page 139 of 321
Climate control137Climate controlClimate control systems ............. 137
Air vents ..................................... 148
Maintenance .............................. 149Climate control systems
Air conditioning system
Controller and buttons for the
following functions:
■ Temperature TEMP
■ Air distribution l M K
■ Fan speed Z
■ Cooling A/C
■ Air recirculation 4
■ Demisting and defrosting V
Heated rear window Ü 3 41.
Heated seats ß 3 52.
Ventilated seats
A 3 53.
Heated steering wheel * 3 86.
Temperature TEMP
Turn controller:
red=warmblue=cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Page 142 of 321

140Climate control
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 52.
Ventilated front seats A 3 53.
Heated steering wheel * 3 86.
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.
Page 144 of 321

142Climate control
Manual settingsClimate control system settings can
be manually adapted by using the air
distribution buttons and the fan speed controller as follows. Manual
changing of settings will deactivate
the automatic mode.
Fan speed Z
Turn controller Z. The selected fan
speed is indicated by the number of segments in the climate display.
If the fan is switched off, the air
conditioning is also deactivated.
To return to automatic mode: Press AUTO button.
Air distribution l, M , K
Press appropriate button for desired
adjustment. Activation is indicated by the LED in the button.
l=to windscreen and front door
windows.M=to head area via adjustable air
vents.K=to foot well.
Combinations are possible.
Return to automatic air distribution:
press button AUTO.
Cooling A/C
Press button A/C 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 button A/C again to switch off
cooling.
The air conditioning system cools and
dehumidifies (dries) cabin air as
required. Therefore condensation
may form and is drained under the
vehicle.
Page 145 of 321

Climate control143
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons.
System ON/OFF X
Cooling, fan and automatic mode can
be switched off by pressing button X.
When the system is deactivated, the
LED in the button X is off.
Activation by pressing button X or
cooling button A/C or automatic mode
button AUTO. Activation is indicated
by the LED in the button.
Manual air recirculation 4Press button 4 to activate air
recirculation mode. Activation is
indicated by the LED in the button.
Select air recirculation to assist in cooling the interior or in blocking
outside odors or exhaust. When
recirculation is selected, a partial
ventilation to refresh the interior air
will occur every 10 minutes.
Press button 4 again to deactivate
recirculation mode.
In warm and very humid ambient air
conditions, the windscreen might mist up from outside, when cold air is
directed to it. If windscreen mists up
from outside, activate windscreen
wiper and deactivate l.
Basic settings Some basic settings can be changedin the vehicle personalisation menu in the Colour-Info-Display.
Select the relevant settings in
Settings , I Vehicle in the Colour-Info-
Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.Dual automatic climate
control system
The dual automatic climate control
allows different climatisation
temperatures for driver and front
passenger side.
In Automatic mode temperature, fan
speed and air distribution are
regulated automatically.
Panels and buttons for the following
functions:
■ Temperature RS
■ Air distribution l M K
■ Fan speed R ZS
Page 148 of 321

146Climate control
Setting of automatic rear window
heating based on cool outside
temperatures 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 3 117.
Vehicle personalisation 3 121.
Notice
If the V button is pressed while the
engine is running, an Autostop will
be inhibited until the V button is
pressed again.
If the V button is pressed while the
engine is in an Autostop, the engine
will restart automatically.
Stop-start system 3 156.
Manual settings Climate control system settings can
be manually adapted by using the air
distribution buttons and the fan speed
controller as follows. Manual
changing of settings will deactivate
the automatic mode.Fan speed S
ZR
Touch ZS or R. The selected fan
speed is indicated in the Info-Display for a short time.
If the fan is switched off, the air
conditioning is also deactivated.
To return to automatic mode: Press AUTO button.
Air distribution l, M , K
Press appropriate button for desired
adjustment. Activation is indicated by the LED in the button.
l=to windscreen and front door
windows.M=to head area via adjustable air
vents.K=to foot well.
Combinations are possible.
Return to automatic air distribution:
press button AUTO.
Page 203 of 321
Driving and operating201
On Baselevel display, select Settings
X with the Menu button and select
Traffic sign detection entry via the
adjuster wheel on the turn signal lever
3 110.On Midlevel and Uplevel display
select Info menu with the right
steering wheel buttons and press P
to select Traffic sign detection 3 110.
When another function in the Driver Information Centre menu was
selected and then Traffic sign
detection page is chosen again, the
last recognized traffic sign will be
displayed.
After the traffic sign page is cleared
by the system, the following symbol is
indicated:
The content of the traffic sign page is also reset during driving by pressing
the SET/CLR button on the turn signal
lever or 9 on right steering wheel
button for a longer time.
Pop-up function
Speed limits and no passing signs are
displayed as pop-ups on each page
of the Driver Information Centre.