Page 46 of 263
44Keys, doors and windowsRollover protection system
The rollover protection system
consists of a reinforced windscreen
frame and roll bars under covers
behind the rear head restraints.
In the event of a vehicle rollover,
head-on collision or side impact, the
roll bars deploy upwards
automatically within milliseconds.
They also deploy together with the
front and side airbag systems.
Notice
Do not place any objects on the
covers of the roll bars behind the
head restraints.
The airbag control indicator v
illuminates if the roll bars have been
deployed.
The system deploys with the soft top
opened or closed.
The soft top must not be operated if
the roll bars have been deployed. A
continuous warning will sound and a
message appears in the Driver
Information Centre if the switch is
actuated.
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Instruments and controls97upshifting for fuel saving
reasons.
Eco index display : The current
fuel consumption is indicated on
a segment display. For
economical driving adapt your
driving style to keep the filled
segments within the Eco area.
The more segments are filled, the higher the fuel consumption.
Simultaneously the current
consumption value is indicated.
● Top Consumers : List of top
comfort consumers currently
switched on is displayed in
descending order. Fuel saving
potential is indicated. A switched-
off consumer disappears from
the list and the consumption
value will be updated.
During sporadic driving
conditions, the heated rear
window is activated automatically to increase engine load. In this
event, the heated rear window is
indicated as one of the top
consumers, without activation by
the driver.
● Economy Trend : Displays the
average consumption
development over a distance of
50 miles. Filled segments display
the consumption in 5 mile steps
and shows the effect of
topography or driving behaviour
on fuel consumption.
Graphic-Info-Display, Colour-Info-Display
Depending on the vehicle
configuration the vehicle has a
Graphic-Info-Display or a Colour-
Info-Display.
The Info-Display is located in the
instrument panel above the
Infotainment system.
Graphic-Info-Display
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 104 of 263

102Instruments and controlsThe following settings can be
selected by turning and pressing the
multifunction knob:
● Sport mode settings
● Languages
● Time Date
● Radio settings
● Phone settings
● Vehicle settings
In the corresponding submenus the
following settings can be changed:
Sport mode settings
The driver can select the functions which will be activated in Sport mode
3 153.
● Sport suspension : Damping
becomes harder.
● Sport powertrain performance :
Accelerator pedal and gear
change characteristics become
more responsive.
● Sport steering : Steering support
is reduced.
● Swap backlight colour main
instr. : Changes the instrument
illumination colour.Languages
Selection of the desired language.
Time Date
See 'Clock' 3 80.
Radio settings
See Infotainment manual for further information.
Phone settings
See Infotainment manual for further information.
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 is either always ON or
always OFF.
Auto rear demist : Activates
heated rear window
automatically.
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104Instruments and controls●Phone Settings
● Navigation Settings
● Display Settings
● Vehicle Settings
In the corresponding submenus the
following settings can be changed:
Sport Mode Profile ● Engine Sport Performance :
Accelerator pedal and gear
change characteristics become
more responsive.
● Sport Mode Back Lighting :
Changes the instrument
illumination colour.
● Sport Suspension : Damping
becomes harder.
● Sport Steering : Steering support
is reduced.
Languages
Selection of the desired language.
Time and Date
See Infotainment manual for further information.Radio Settings
See Infotainment manual for further information.
Phone Settings
See Infotainment manual for further information.
Navigation Settings
See Infotainment manual for further
information.
Display Settings ● Home Page Menu :
See Infotainment manual for
further information.
● Rear Camera Options :
Press to adjust the rear camera options 3 170.
● Display Off :
See Infotainment manual for
further information.
● Map Settings :
See Infotainment manual for
further information.Vehicle Settings
● Climate and Air Quality
Auto Fan Speed : Modifies the
level of the cabin airflow of the
climate control in automatic
mode.
Air Conditioning Mode : Controls
the state of the cooling
compressor when the vehicle is
started. Last setting
(recommended) or at vehicle
start is either always ON or
always OFF.
Auto Rear Demist : Activates
heated rear window
automatically.
● Comfort and Convenience
Chime Volume : Changes the
volume of warning chimes.
Personalisation by Driver :
Activates or deactivates the
personalisation function.
● Collision Detection Systems
Park Assist : Activates or
deactivates the ultrasonic
sensors. Activation is selectable with or without attached trailer
coupling.
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122LightingExit lighting is switched off
immediately if the turn signal lever is
pulled while the driver's door is open.
Activation, deactivation and duration of this function can be changed in the Info-Display. Vehicle personalisation
3 101.
The settings can be saved for the key
being used 3 21.
Battery discharge protection Vehicle battery state of charge
function
The function guarantees longest
vehicle battery life via a generator
with controllable power output and
optimised power distribution.
To prevent discharge of the vehicle
battery when driving, the following
systems are reduced automatically in two stages and finally switched off:
● auxiliary heater
● heated rear window and mirrors
● heated seats
● fanIn the second stage, a message
which confirms activation of the
vehicle battery discharge protection will be displayed in the Driver
Information Centre.
Switching off electric lights To prevent discharge of the vehicle
battery when the ignition is switched
off, some interior lights are switched
off automatically after some time.
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.