Page 82 of 267
80Instruments 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 3 140.
Horn
Press j.
Windscreen wiper and
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 92 of 267

90Instruments and controlsControl indicators in the centre
console
Overview
OTurn signal 3 90XSeat belt reminder 3 91vAirbag and belt tensioners and
roll bars 3 91VAirbag deactivation 3 91pCharging system 3 91ZMalfunction indicator light
3 92RBrake and clutch system 3 92-Operate pedal 3 92mElectric parking brake 3 92jElectric parking brake fault
3 93uAntilock brake system (ABS)
3 93RUpshift 3 93cPower steering 3 93)Lane departure warning 3 93aElectronic Stability Control off
3 94bElectronic Stability Control and
Traction Control system 3 94kTraction Control system off
3 94!Preheating 3 94%Exhaust filter 3 94YAdBlue 3 94wTyre pressure monitoring
system 3 94IEngine oil pressure 3 95iLow fuel 3 95dImmobiliser 3 958Exterior light 3 95CHigh beam 3 95lHigh beam assist 3 96fAdaptive forward lighting 3 96>Fog light 3 96rRear fog light 3 96mCruise control 3 96AVehicle detected ahead 3 96hDoor open 3 96
Turn lights
O illuminates or flashes green.
Illuminates briefly The parking lights are switched on.
Flashes
A turn signal or the hazard warning
flashers are activated.
Page 95 of 267

Instruments and controls93Flashes
Electric parking brake is not fully applied or released. Switch on
ignition, depress brake pedal and
attempt to reset the system by first
releasing and then applying the
electric parking brake. If m remains
flashing, do not drive and seek the
assistance of a workshop.
Electric parking brake fault j illuminates or flashes yellow.
Illuminates
Electric parking brake is operating
with degraded performance 3 153.
Flashes
Electric parking brake is in service mode. Stop vehicle, apply and
release the electric parking brake to
reset.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Antilock brake system
(ABS)
u illuminates yellow.
Illuminates for a few seconds after the ignition is switched on. The system is
ready for operation when the control
indicator extinguishes.
If the control indicator does not
extinguish after a few seconds, or if it illuminates while driving, there is a
fault in the ABS. The brake system
remains operational but without ABS
regulation.
Antilock brake system 3 152.
Upshift R with the number of a higher gear is
indicated or pops up as a full page in
the Driver Information Centre when
upshifting is recommended for fuel
saving reasons.
Driver Information Centre 3 96.
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 3 140.
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.
Page 96 of 267

94Instruments and controlsFlashes yellowSystem 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)
3 156, Traction Control system (TC)
3 155.
Traction Control system off
k illuminates yellow.
The system is deactivated.
Preheating ! illuminates yellow.
Preheating is activated. Only
activates when outside temperature is low.
Exhaust filter % illuminates or flashes yellow.
The exhaust filter requires cleaning.
Continue driving until %
extinguishes. If possible, do not allow
engine speed to drop below
2000 rpm.Illuminates
The exhaust filter is full. Start cleaning
process as soon as possible.
Flashes
The maximum filling level of the filter is reached. Start cleaning process
immediately to avoid damage to the
engine.
Exhaust filter 3 144, Stop-start
system 3 140.
AdBlue Y flashes yellow.
AdBlue level is low. Refill AdBlue
soon to avoid prevention of the
engine start.
AdBlue 3 145.
Tyre pressure monitoring
system
w illuminates or flashes yellow.
Illuminates
Tyre pressure loss. Stop immediately
and check tyre pressure.
Page 106 of 267

104Instruments and controls● If a warning message appears inthe Driver Information Centre.
● If the parking assist detects an object.
● If unintended lane change occurs.
● If the exhaust 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 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 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 23.
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
Page 129 of 267

Climate control127Climate controlClimate control systems.............127
Heating and ventilation system 127
Air conditioning system ...........128
Electronic climate control system .................................... 130
Auxiliary heater ........................134
Air vents ..................................... 135
Adjustable air vents .................135
Fixed air vents ......................... 135
Maintenance .............................. 135
Air intake ................................. 135
Pollen filter ............................... 135
Air conditioning regular
operation ................................ 136
Service .................................... 136Climate control systems
Heating and ventilation system
Controls for: ● temperature
● air distribution
● fan speed
● demisting and defrosting
Heated rear window Ü 3 35.
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 130 of 267
128Climate 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 55, Heated
steering wheel * 3 79.
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 134 of 267

132Climate 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.
Note
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 3 140.
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 3 104.
Note
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 3 140.
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.