Page 80 of 263
78Instruments and controlsThe highlighted grip areas of the
steering wheel are heated quicker
and to a higher temperature than the
other areas.
Heating is operational when the
engine is running and during an
Autostop.
Stop-start system 3 136.
Horn
Press j.
Windscreen wiper/washer
Windscreen wiperHI:fastLO:slowINT:interval wiping
or
automatic wiping with rain
sensorOFF:off
For a single wipe when the
windscreen wiper is off, press the
lever down to position 1x.
Do not use if the windscreen is frozen.
Switch off in car washes.
Adjustable wiper interval
Wiper lever in position INT.
Turn the adjuster wheel to adjust the
wiping frequency.
Page 88 of 263

86Instruments and controlsControl indicatorsThe control indicators described are
not present in all vehicles. The
description applies to all instrument
versions. Depending on the
equipment, the position of the control indicators may vary. When the
ignition is switched on, most control
indicators will illuminate briefly as a functionality test.
The control indicator colours mean:red:danger, important reminderyellow:warning, information, faultgreen:confirmation of activationblue:confirmation of activationwhite:confirmation of activation
Control indicators in the
instrument cluster
Control indicators in the centre
console
Overview
OTurn signal 3 87XSeat belt reminder 3 87vAirbag and belt tensioners and
roll bars 3 87VAirbag deactivation 3 88pCharging system 3 88ZMalfunction indicator light
3 88RBrake and clutch system 3 88-Operate pedal 3 88mElectric parking brake 3 89jElectric parking brake fault
3 89uAntilock brake system (ABS)
3 89RUpshift 3 89cPower steering 3 90)Lane departure warning 3 90aElectronic Stability Control off
3 90bElectronic Stability Control and
Traction Control system 3 90kTraction Control system off
3 90!Preheating 3 90%Diesel particle filter 3 90YAdBlue 3 91
Page 92 of 263

90Instruments and controlsEcoFlex drive assistant 3 93.
Power steering
c illuminates yellow.
Illuminates with power steering
reduced
Power steering is reduced due to
overheating of the system. Control
indicator extinguishes when the
system has cooled down.
Stop-start system 3 136.
Illuminates with power steering disabled
Failure in the power steering system.
Consult a workshop.
Lane departure warning) illuminates green or flashes yellow.
Illuminates green
System is switched on and ready to
operate.Flashes yellow
System recognises an unintended
lane change.
Electronic Stability Control
off
n illuminates yellow.
The system is deactivated.
Electronic Stability Control and Traction Control system
b illuminates or flashes yellow.
Flashes
The system is actively engaged.
Engine output may be reduced and
the vehicle may be braked
automatically to a small degree.
Illuminates
A fault in the system is present. A
warning message appears in the
Driver Information Centre. Continued
driving is possible. The system is notoperational. Driving stability,
however, may deteriorate depending
on road surface conditions.
Have the cause of the fault remedied by a workshop.
Electronic Stability Control (ESC)
3 152, Traction Control system (TC)
3 151.
Traction Control system off
k illuminates yellow.
The system is deactivated.
Preheating
! illuminates yellow.
Preheating is activated. Only
activates when outside temperature
is low.
Diesel particle filter
% illuminates or flashes yellow.
The diesel particle filter requires
cleaning.
Page 103 of 263

Instruments and controls1011. Switch off immediately anyelectrical 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 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.Vehicle personalisation
The vehicle's behaviour can be
personalised by changing the settings in the Info-Display.
Some of the personal settings for
different drivers can be memorised
individually for each vehicle key.
Memorised settings 3 21.
Depending on vehicle equipment and
country-specific regulations, some of
the functions described below may
not be available.
Some functions are only displayed or
active when the engine is running.
Personal settings in the
Graphic-Info-Display
CD 400plus/CD 400/CD 300
Press CONFIG . The menu Settings is
displayed.
Page 125 of 263

Climate control123Climate controlClimate control systems.............123
Heating and ventilation system 123
Air conditioning system ...........124
Electronic climate control system .................................... 126
Auxiliary heater ........................130
Air vents ..................................... 131
Adjustable air vents .................131
Fixed air vents ......................... 131
Maintenance .............................. 131
Air intake ................................. 131
Pollen filter ............................... 131
Air conditioning regular
operation ................................ 132
Service .................................... 132Climate control systems
Heating and ventilation system
Controls for: ● temperature
● air distribution
● fan speed
● demisting and defrosting
Heated rear window Ü 3 34.
Temperature
red:warmblue:coldHeating will not be fully effective until
the engine has reached normal
operating temperature.
Air distributions:to windscreen and front door
windowsM:to head area via adjustable air
ventsK:to foot well and windscreen
All combinations are possible.
Fan speed
Adjust the air flow by switching the fan to the desired speed.
Page 126 of 263
124Climate controlDemisting and defrosting
●Press V: fan automatically
switches to higher speed, the air
distribution is directed towards
the windscreen.
● Set temperature control to warmest level.
● Switch on heated rear window Ü.
● Open side air vents as required and direct them towards the doorwindows.
Air conditioning system
In addition to the heating and
ventilation system, the air
conditioning system has controls for:
n:cooling4:air recirculation
Heated seats ß 3 53, Heated
steering wheel * 3 77.
Cooling n
Press n to switch on cooling. The
LED in the button illuminates to
indicate activation. 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.
Page 130 of 263

128Climate control
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 3 136.
Demisting and defrosting the
windows V
●
Press V. The LED in the button
illuminates to indicate activation.
● 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
Settings menu in the Info-Display.
Vehicle personalisation 3 101.
Notice
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If s is pressed with the fan switched
on and the engine running, an
Autostop will be inhibited until s is
pressed again or until the fan is
switched off.
If V is pressed while the engine is
in an Autostop, the engine will restart automatically.
If s is pressed with the fan switched
on while the engine is in an
Autostop, the engine will restart
automatically.
Stop-start system 3 136.
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.
Page 134 of 263
132Climate controlAir conditioning regularoperation
In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a
month, irrespective of the weather
and time of year. Operation with
cooling is not possible when the
outside temperature is too low.
Service For optimal cooling performance, it is recommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:
● functionality and pressure test
● heating functionality
● leakage check
● check of drive belts
● cleaning of condenser and evaporator drainage
● performance check
Notice
Refrigerant R-134a contains
fluorinated greenhouse gases.