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124Instruments and controls
■Speed Warning : if exceeding the
preset speed, a warning chime will
be activated
■ Traffic Sign Assistant : displays
detected traffic signs for the current
route section 3 208
■ Following Dist. : displays the
distance to a preceding moving
vehicle 3 196
Selection and indication can be
different between Midlevel-, Uplevel-,
and Uplevel-Combi-Display.
Trip/Fuel Information Menu
Press the MENU button to select the
Trip/Fuel Information Menu , or select
W on Uplevel-Combi-Display.
Turn the adjuster wheel to select a
submenu. Press the SET/CLR button
to confirm.
■ Trip odometer 1
■ Trip odometer 2
■ Digital speed
Trip odometer 2 and digital speed are
only available on vehicles with
Uplevel-Display or Uplevel-Combi-
Display.
Reset trip odometer by pressing the
SET/CLR button on the turn signal
lever for a few seconds or by pressing the reset knob between speedometer
and Driver Information Centre with
the ignition on.
On vehicles with trip computer more
submenus are available.
Selection and indication can be
different between Midlevel-, Uplevel-, and Uplevel-Combi-Display.
Trip/Fuel Information Menu, Trip
Computer 3 132.
ECO Information Menu
Press the MENU button to select
s in the top line of the Uplevel-
Combi-Display.
Turn the adjuster wheel to select a
submenu. Press the SET/CLR button
to confirm.
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Instruments and controls125
Submenus are:
■Shift indication : Current gear is
indicated inside an arrow. The
figure above recommends
upshifting for fuel saving reasons.
Eco index display : The current fuel
consumption is indicated on a segment display. For economical
driving adapt your driving
characteristic 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 engine will activate the heated
rear window automatically to
increase the 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 km. Filled
segments display the consumption
in 5 km steps and shows the effect
of topography or driving behaviour
on fuel consumption.
Page 131 of 331

Instruments and controls129
No.Vehicle message6Depress brake pedal to release
electric parking brake7Turn steering wheel, switch
ignition off and then on9Turn steering wheel, start
engine again12Vehicle overloaded13Compressor overheated15Centre high-mounted brake
light failure16Brake light failure17Headlight levelling malfunction18Left low beam failure19Rear fog light failure20Right low beam failure21Left sidelight failure22Right sidelight failure23Reversing light failureNo.Vehicle message24Number plate light failure25Left front turn signal failure26Left rear turn signal failure27Right front turn signal failure28Right rear turn signal failure29Check trailer brake light30Check trailer reversing light31Check left trailer turn signal32Check right trailer turn signal33Check trailer rear fog light34Check trailer rear light35Replace battery in radio remote
control48Clean side blind zone alert
system49Lane departure warning
unavailable53Tighten gas capNo.Vehicle message54Water in diesel fuel filter55Diesel particle filter is full
3 17056Tyre pressure imbalance on
front axle57Tyre pressure imbalance on
rear axle58Tyres without TPMS sensors
detected59Open and then close driver
window60Open and then close front
passenger window61Open and then close rear left
window62Open and then close rear right
window65Theft attempted66Service theft alarm system67Service steering wheel lock
Page 134 of 331
132Instruments and controlsTrip computerThe menus and functions can be
selected via the buttons on the turn signal lever 3 121.
Press the MENU button to select the
Trip/Fuel Information Menu , or select
W on the Uplevel-Combi-Display.
Trip/Fuel Information Menu on
Uplevel-Display
Turn the adjuster wheel to select one of the submenus:
■ Trip odometer 1
■ Trip odometer 2
■ Range
■ Average consumption
■ Instantaneous consumption
■ Average speed
■ Digital speed
■ Traffic sign assistant
■ Route guidance
Trip/Fuel Information Menu on
Uplevel-Combi-Display
Turn the adjuster wheel to select the
submenus:
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134Instruments and controls
Range
Range is calculated from current fuel
tank content and current
consumption. The display shows
average values.
After refuelling, the range is updated
automatically after a brief delay.
When the fuel level in the tank is low,
a message appears on vehicles with
Uplevel-Display or Uplevel-Combi-
Display.
When the tank has to be refuelled
immediately, a warning code or
warning message is displayed on
vehicles with Midlevel- and Uplevel-
Display or Uplevel-Combi-Display.
Additionally the control indicator i in
the fuel gauge illuminates or flashes
3 120.
Average consumption
Display of average consumption. The measurement can be reset at any
time and starts with a default value.
To reset, press the SET/CLR button
for a few seconds.Instantaneous consumption
Display of the instantaneous
consumption.
Average speed
Display of average speed. The
measurement can be reset at any
time.
To reset, press the SET/CLR button
for a few seconds.
Digital speed
Digital display of the instantaneous
speed.
Traffic sign assistant
Indicates detected traffic signs for the current route section 3 208.
Route guidance
Additionally to the navigation
information in the Color-Info-Display,
route guidance is displayed in the
Driver Information Centre.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 25.
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 300/CD 400/CD400plus
Page 159 of 331

Climate control157
If no cooling or drying is required,
switch the cooling system off to save
fuel. 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.
■ Switch on cooling n.
■ Air circulation system 4 on.
■ Press air distribution switch M.
■ Set temperature control to coldest level.
■ Set fan speed to highest level.
■ Open all vents.
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Climate control161
Pressing the upper button longer: thefan runs at maximum speed.
To return to automatic mode: Press
AUTO button.
Air distribution s, M , K
Press appropriate button for desired
adjustment. Activation is indicated by the LED in the button.
s=to windscreen and front door
windows.M=to head area via adjustable air
ventsK=to foot well.
All combinations are possible.
Return to automatic air distribution:
press button AUTO.
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) when outside temperature is above a specific level. Therefore condensation may form
and drip from under the vehicle.
If no cooling or drying is required,
switch the cooling system off to save
fuel. When the cooling system is
switched off, no engine restart will be
requested by the climate control
system during an Autostop.
Exception: defrost system is activated and outside temperature above 0° C
requests a restart.
The display will indicate ACON when
cooling is activated or ACOFF when
the cooling is deactivated.
Activation or deactivation of cooling
operation after engine start can be
changed in the menu Settings in the
Info-Display. Vehicle personalisation 3 134.
Page 166 of 331

164Driving and operatingDriving and operatingDriving hints............................... 164
Starting and operating ...............165
Engine exhaust .......................... 170
Automatic transmission .............. 171
Manual transmission ..................175
Brakes ........................................ 175
Ride control systems .................178
Driver assistance systems .........183
Fuel ............................................ 213
Trailer hitch ................................ 219Driving hints
Control of the vehicleNever coast with engine not
running (except during Autostop)
Many systems will not function in this
situation (e.g. brake servo unit, power steering). Driving in this manner is a
danger to yourself and others. All
systems function during an Autostop,
but there will be a controlled reduction
in power steering assist and vehicle
speed is reduced.
Stop-start system 3 167.
Idle boost
If charging of the battery is required
due to battery condition, the power output of the generator has to be
increased. This will be achieved by an
idle boost which may be audible.
On vehicles with Uplevel- or Uplevel- Combi-Display, a message appearsin the Driver Information Centre.Pedals
To ensure the pedal travel is uninhibited, there must be no mats in the area of the pedals.
Steering If power steering assist is lost
because the engine stops or due to a
system malfunction, the vehicle can
be steered but may require increased
effort.
Control indicator c 3 118.Caution
Vehicles equipped with hydraulic
power steering:
If the steering wheel is turned until it reaches the end of its travel, and
is held in that position for more
than 15 seconds, damage may
occur to the power steering
system and there may be loss of
power steering assist.