Page 118 of 233

116Climate controlClimate controlClimate control systems.............116
Heating and ventilation system 116
Air conditioning system ...........117
Electronic climate control system .................................... 118
Rear heating system ...............120
Rear air conditioning system ...120
Auxiliary heater ........................121
Air vents ..................................... 127
Adjustable air vents .................127
Fixed air vents ......................... 127
Glovebox cooler ......................127
Maintenance .............................. 128
Air intake ................................. 128
Pollen filter ............................... 128
Air conditioning regular operation ................................ 128
Service .................................... 128Climate control systems
Heating and ventilation system
Controls for: ● temperature
● fan speed
● air distribution
Heated rear window Ü 3 45.
Temperature
red:warmblue:coldHeating 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 distributionM: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.
● Set air distribution control to V.
● Switch on heated rear window Ü.
Page 120 of 233

118Climate control9Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling, the
air humidity increases, so the
windows may mist up from inside.
The quality of the passenger
compartment air deteriorates,
which may cause the vehicle
occupants to feel drowsy.
In warm and very humid ambient air conditions, the windscreen might mist up from outside when cold air is
directed towards it. If windscreen
mists up from outside, activate
windscreen wiper and avoid the use
of air distribution settings J and V.
Maximum cooling
Briefly open the windows so that hot air can disperse quickly.
● Cooling A/C on.
● Air recirculation system 4 on.
● Set air distribution control to M.
● Set temperature control to coldest level.
● Set fan speed to highest level.
● Open all air vents.
Demisting and defrosting the
windows
● Set temperature control to warmest level.
● Set fan speed to highest level.
● Set air distribution control to V.
● Switch cooling A/C on.
● Switch on heated rear window Ü.
● Open side air vents as required and direct them towards doorwindows.
● For simultaneous warming of the
foot well, set air distribution
control to J.
Heated rear window 3 45.Electronic climate control
system
Controls for: ● air distribution
● temperature
● fan speed
AUTO:automatic modeÊ:demisting and defrostingÜ:heated rear windowA/C OFF:switch off air conditioningu:manual air recirculation
Heated rear window Ü 3 45, Heated
seats 3 50.
Page 121 of 233

Climate control119The preselected temperature is
automatically regulated. In Automatic
mode, the fan speed and air
distribution automatically regulate the
air flow.
The system can be manually adapted via the use of air distribution and air
flow controls.
Electronic climate control system is only fully operational when the engine is running.
Automatic mode AUTO Basic setting for maximum comfort: ● Switch on the fan.
● Press AUTO; fan speed, air
distribution, cooling and air
recirculation are regulated
automatically.
● Set the desired temperature.
● Open all air vents.
To switch off the electronic climate
control system, switch off the fan.
Temperature preselection Temperatures can be set to the
desired value.If the minimum temperature is set, the
climate control system runs at
maximum cooling.
If the maximum temperature is set,
the climate control system runs at maximum heating.
Demisting and defrosting the
windows
● Press Ê; LED illuminates in the
button when activated.
● Temperature, air distribution and cooling are regulated
automatically and the fan runs at
high speed.
● Switch on heated rear window Ü
3 45.
To return to Automatic mode: press Ê or AUTO .
Note
If Ê is pressed while the engine is
running, an Autostop will be inhibited until Ê is pressed again.
If Ê is pressed while the engine is in
an Autostop, the engine will restart
automatically.
Stop-start system 3 135.Manual settings
Manually changing any of the
following settings will deactivate
Automatic mode:
Fan speed Z
Adjust the air flow manually by
switching the fan to the desired
speed.
If the fan is switched off, the air
conditioning is also deactivated.
Air distribution M
Press appropriate button for desired
adjustment. LED illuminates in the
button when activated.R:to windscreen and front door
windowsM:to head areaS:to foot well
Combinations of settings are possible
by pressing two buttons until both
LEDs are illuminated.
To return to Automatic mode: Press
AUTO button.
Page 139 of 233

Driving and operating137Stability Program (ESP®Plus
)
3 149 ride control systems are
not actively engaged
● the vehicle has moved since the last Autostop
Otherwise an Autostop will be
inhibited.
Certain settings of the climate control system may also inhibit an Autostop.
See " Climate control " chapter for
further information 3 118.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 131.
Vehicle battery discharge protection
To ensure reliable engine restarts,
several 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.
Note
If any gear is selected, the clutch pedal must be fully depressed to
restart the engine.If the engine does not restart first
time, depress clutch pedal fully again.
Alternatively, press button Î to
restart the engine while in an
Autostop.
Control indicator Ï 3 101
extinguishes in the instrument cluster
when the engine is restarted.
Restart of the engine by the stop- start system
The selector lever must be in neutral to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically by the stop-start system:
● the vehicle battery is discharged
● the outside temperature is too low or too high (e.g. below 0 °C
or above 30 °C)
● the defrosting function is activated 3 118
● the brake vacuum is not sufficient
● the brake pedal is operated repeatedly
● the vehicle starts to moveAn automatic engine restart may not
be possible if a door or the bonnet is
open.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop
during engine restart may be
noticeable.
If the Infotainment system is active,
audio sound may briefly be reduced
or interrupted during the restart.
Fault
If a fault occurs in the stop-start
system, the LED in Î illuminates,
and a corresponding message
appears in the Driver Information
Centre 3 102 . Seek the assistance of
a workshop.
Vehicle messages 3 103.
Warning chimes 3 104.