Page 108 of 245

106Instruments and controls
No.Vehicle message69Service suspension system70Service level control system71Service rear axle74Service AFL75Service air conditioning76Service side blind zone alert
system79Top up engine oil81Service transmission82Change engine oil soon83Service adaptive cruise control84Engine power is reduced89Service vehicle soon94Shift to park before exiting95Service airbag128Bonnet open134Park assist fault, clean bumperNo.Vehicle message136Service parking assist174Low vehicle battery258Park assist off
Vehicle messages on the
Uplevel-Display or Uplevel-Combi-Display
The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
The system displays messages
regarding the following topics:
■ Fluid levels
■ Anti-theft alarm system
■ Brakes
■ Drive systems
■ Ride control systems
■ Cruise control
■ Object detection systems
■ Lighting, bulb replacement
■ Wiper/washer system
■ Doors, windows
■ Radio remote control
■ Seat belts
■ Airbag systems
■ Engine and transmission
■ Tyre pressure
■ Diesel particle filter
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Instruments and controls107
Vehicle messages on the
Colour-Info-Display Some important messages appear
additionally in the
Colour-Info-Display. Press the
multifunction knob to confirm a
message. Some messages only pop- up for a few seconds.
Warning chimes Only one warning chime will sound at
a time.
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
When starting the engine or
whilst driving ■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting-off.
■ If a certain speed is exceeded with parking brake applied.
■ If a programmed speed is exceeded.■ If a warning message or a warningcode appears in the Driver
Information Centre.
■ If the parking assist detects an object.
■ If reverse gear is engaged and the rear end carrier is extended.
■ If a fault in the automatic locking system 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 ■ When the key is in the ignition switch.
■ 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.
Page 114 of 245

112Instruments and controls
Vehicle settings
■Climate and air quality
Auto fan speed : Modifies the level
of the cabin airflow of the climate
control in automatic mode.
Climate control mode : Controls the
state of the cooling compressor
when the vehicle is started. Last
setting (recommended) or at
vehicle start either always ON or
always OFF.
Auto rear demist : Activates
automatically rear heated window.
■ Comfort settings
Chime volume : Changes the
volume of warning chimes.
Personalization by driver : Activates
or deactivates the personalisation
function.
Rear auto wipe in reverse :
Activates or deactivates automatic
switching on of the rear window
wiper when reverse gear is
engaged.
■ Park assist / Collision detection
Park assist : Activates or
deactivates the ultrasonic parking
assist.
■ Exterior ambient lighting
Duration upon exit of vehicle :
Activates or deactivates and
changes the duration of exit
lighting.
Exterior lighting by unlocking :
Activates or deactivates the
welcome lighting.
■ Remote locking, unlocking, starting
Remote door unlock : Changes the
configuration to unlock only the
driver's door or the whole vehicle
whilst unlocking.
■ Restore factory settings
Restore factory settings : Resets all
settings to the default settings.
Settings in the Colour-Info-
Display CD 600/Navi 650/Navi 950
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114Instruments and controls
■Display Off :
See Infotainment system manual
for further information.
■ Map Settings :
See Infotainment system manual
for further information.
Vehicle Settings ■ Climate and Air Quality
Auto Fan Speed : Modifies the fan
regulation. Changed setting will be active after switching the ignition off
and on again.
Air Conditioning Mode : Activates or
deactivates cooling when switching on the ignition or uses the last
chosen setting.
Auto Demist : Activates or
deactivates auto demist.
Auto Rear Demist : Activates
automatically the rear heated
window.
■ Comfort and Convenience
Chime Volume : Changes the
volume of warning chimes.Personalisation by Driver :
Activates or deactivates the
personalisation function.
Auto Reverse Gear Wiper :
Activates or deactivates
automatically switching on of the
rear window wiper when reverse gear is engaged.
■ Collision Detection Systems
Park Assist : Activates or
deactivates the ultrasonic sensors.
■ Lighting
Vehicle Locator Lights : Activates or
deactivates the entry lighting.
Exit Lighting : Activates or
deactivates and changes the
duration of exit lighting.
■ Remote Lock/Unlock/Start
Remote Door Unlock : Changes the
configuration to unlock only the
driver's door or the whole vehicle
whilst unlocking.
■ Return to Factory Settings? :
Resets all settings to the default
settings.
Page 126 of 245
124Climate controlClimate controlClimate control systems ............. 124
Air vents ..................................... 131
Maintenance .............................. 132Climate control systems
Heating and ventilation
system
Controls for: ■ Temperature
■ Air distribution
■ Fan speed
■ Demisting and defrosting
Heated rear window Ü 3 32.
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
All combinations are possible.
Fan speed
Adjust the air flow by switching the fan to the desired speed.
Demisting and defrosting ■ Press button 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 door
windows.
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Climate control125
Notice
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 3 137.
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 82.
Cooling n
Press button 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 button 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 button 4 to activate air
recirculation mode. Activation is
indicated by the LED in the button.
Press button 4 again to deactivate
recirculation mode.9 Warning
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 to it. If windscreen mists up
from outside, activate windscreen
wiper and deactivate s.
Maximum cooling
Briefly open the windows so that hot
air can disperse quickly.
Page 128 of 245

126Climate control
■Switch on cooling n.
■ Switch on air recirculation system 4 .
■ Press air distribution switch M.
■ Set temperature control to coldest level.
■ Set fan speed to highest level.
■ Open all vents.
Demisting and defrosting the
windows V■
Press button 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 door
windows.
Notice
If button 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 3 137.
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
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Climate control127
Heated rear window Ü 3 32, Heated
seats ß 3 40, Heated steering wheel
* 3 82.
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.
Automatic mode AUTO
Basic setting for maximum comfort:
■ Press AUTO button, 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.