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42Seats, restraintsFront seatsSeat position9 Warning
Only drive with the seat correctly
adjusted.
■ Sit with buttocks as far back against
the backrest as possible. Adjust the distance between the seat and the
pedals so that legs are slightly
angled when pressing the pedals.
Slide the front passenger seat as
far back as possible.
■ Sit with shoulders as far back against the backrest as possible.
Set the backrest rake so that it is possible to easily reach the
steering wheel with arms slightly bent. Maintain contact between
shoulders and the backrest when
turning the steering wheel. Do not
angle the backrest too far back. We recommend a maximum rake of
approx. 25°.
■ Adjust the steering wheel 3 102.
■ Set seat height high enough to have a clear field of vision on allsides and of all display instruments.
There should be at least one hand
of clearance between head and the
roof frame. Your thighs should rest
lightly on the seat without pressing
into it.
■ Adjust the head restraint 3 40.
■ Adjust the height of the seat belt 3 50.■ Adjust the thigh support so that
there is a space approx. two fingers
wide between the edge of the seat
and the hollow of the knee.
■ Adjust the lumbar support so that it
supports the natural shape of the
spine.
Seat adjustment9 Danger
Do not sit nearer than 25 cm from
the steering wheel, to permit safe
airbag deployment.
9 Warning
Never adjust seats while driving as
they could move uncontrollably.
Page 104 of 331
102Instruments and controlsInstruments and
controlsControls ..................................... 102
Warning lights, gauges and indi‐ cators ......................................... 110
Information displays ...................121
Vehicle messages ...................... 128
Trip computer ............................. 132
Vehicle personalisation ..............134Controls
Steering wheel adjustment
Unlock lever, adjust steering wheel,
then engage lever and ensure it is fully locked.
Do not adjust steering wheel unless
vehicle is stationary and steering
wheel lock has been released.
Steering wheel controls
The Infotainment system, the cruise
control and a connected mobile
phone can be operated via the
controls on the steering wheel.
Further information is available in the
Infotainment system manual.
Driver assistance systems 3 183.
Page 108 of 331
106Instruments and controlsRear window wiper/washer
Press the rocker switch to activate the
rear window wiper:
upper posi‐
tion=continuous
operationlower posi‐
tion=intermittent
operationmiddle posi‐
tion=off
Push lever. Washer fluid is sprayed
onto the rear window and the wiper
wipes a few times.
Do not use if the rear window is
frozen.
Switch off in car washes.
The rear window wiper comes on
automatically when the windscreen
wiper is switched on and reverse gear
is engaged.
Activation or deactivation of this
function can be changed in the menu Settings in the Info-Display.
Vehicle personalisation 3 134.
The rear window washer system is
deactivated when the fluid level is
low.
Outside temperature
A drop in temperature is indicated
immediately and a rise in temperature
after a time delay.
Page 109 of 331

Instruments and controls107
If outside temperature drops to 3 °C,
a warning message is displayed in the Driver Information Centre with
Uplevel-Display or Uplevel-Combi-
Display.
9 Warning
The road surface may already be
icy even though the display
indicates a few degrees above
0 °C.
Clock
Date and time are shown in the
Info-Display.
Time and date settings
CD 300 /CD 400 /CD400plus and Navi
600/Navi 900
Press the CONFIG button. The menu
Settings is displayed.
Select Time & Date .
Selectable setting options:
■ Set time : Changes the time shown
on the display.
■ Set date : Changes the date shown
on the display.
■ Set time format : Changes
indication of hours between 12
hours and 24 hours .
■Set date format : Changes
indication of date between MM/DD/
YYYY and DD.MM.YYYY .
■ Display digital clock : Switches on/
off indication of time on the display.
■ RDS clock synchronization : The
RDS signal of most VHF
transmitters automatically sets the time. RDS time synchronisation
can take a few minutes. Some
transmitters do not send a correct
time signal. In such cases, it is
recommended to switch off
automatic time synchronisation.
Vehicle personalisation 3 134.
Time and date settings
CD 600/Navi 650/Navi 950
Press the Config button and then
select the Time and Date menu item
to display the respective submenu.
Page 112 of 331
110Instruments and controlsWarning lights, gauges
and indicators
Instrument cluster In some versions, the needles of the
instruments briefly rotate to the end
position when the ignition is switched
on.
Speedometer
Indicates vehicle speed.
Odometer
The bottom line displays the recorded distance in km.
Trip odometer The top line displays the recorded
distance since the last reset.
To reset, press the SET/CLR button
on the turn signal lever for a few
seconds 3 121.
Some versions are equipped with a
reset knob between speedometer
and Driver Information Centre: to
reset hold the knob depressed for a
few seconds with the ignition on.
Trip odometer counts up to a distance
of 2000 km and then restarts at 0.
Tachometer
Displays the engine speed.
Drive in a low engine speed range for each gear as much as possible.
Page 113 of 331

Instruments and controls111Caution
If the needle is in the red warning
zone, the maximum permitted
engine speed is exceeded. Engine at risk.
Fuel gauge
Displays the fuel level or gas level in
the tank depending on the operation
mode.
Control indicator i illuminates if the
level in the tank is low. Refuel
immediately if it flashes.
During liquid gas operation, the
system automatically switches over to
petrol operation when gas tanks are
empty 3 111.
Never run the tank dry.
Because of the fuel remaining in the
tank, the top-up quantity may be less
than the specified tank capacity.
Fuel selector
Press button LPG to switch between
petrol and liquid gas operation. The
LED 1 status shows the current
operating mode.
1 off=petrol operation1 illumi‐
nates=liquid gas operation1 flashes=no switching is
possible, one type
of fuel is empty
As soon as the liquid gas tank is
empty, petrol operation is
automatically engaged until the
ignition is switched off.
Fuel for liquid gas operation 3 213.
Engine coolant
temperature gauge
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112Instruments and controls
Displays the coolant temperature.left area=engine operating
temperature not yet
reachedcentral
area=normal operating
temperatureright area=temperature too highCaution
If engine coolant temperature is
too high, stop vehicle, switch off
engine. Danger to engine. Check
coolant level.
Service display
The engine oil life system lets you
know when to change the engine oil
and filter. Based on driving
conditions, the interval at which an
engine oil and filter change will be
indicated can vary considerably.
In the Uplevel-Display or Uplevel-
Combi-Display, the remaining oil life
duration is displayed in the Vehicle
Information Menu .
In the Midlevel-Display, the remaining
engine oil life duration is displayed by
the control indicator I, therefore the
ignition must be switched on, with the engine not running.
The menu and function can be
selected via the buttons on the turn
signal lever.
To display the remaining engine oil
life duration:Press the MENU button to select the
Vehicle Information Menu .
Turn the adjuster wheel to select Remaining Oil Life .
The system must be reset every time
the engine oil is changed to allow proper functionality. Seek the
assistance of a workshop.
Press the SET/CLR button to reset.
Therefore the ignition must be
switched on, with the engine not
running.
When the system has calculated that
engine oil life has been diminished,
Change Engine Oil Soon or a warning
Page 118 of 331

116Instruments and controls
* illuminates yellow.
The front passenger airbag is
deactivated 3 55.9 Danger
Risk of fatal injury for a child using
a child restraint system together
with activated front passenger
airbag.
Risk of fatal injury for an adult
person with deactivated front
passenger airbag.
Charging system
p illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Stop, switch off engine. Vehicle
battery is not charging. Engine
cooling may be interrupted. The
brake servo unit may cease to be
effective. Seek the assistance of a
workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine isrunning
Fault in the emission control system. The permitted emission limits may be
exceeded. Seek the assistance of a
workshop immediately.Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
accelerator until the flashing stops.
Seek the assistance of a workshop
immediately.
Service vehicle soon g illuminates yellow.
Additionally a warning message or a
warning code is displayed.
The vehicle needs a service.
Seek the assistance of a workshop.
Vehicle messages 3 128.
Brake and clutch system
Brake and clutch fluid level
R illuminates red.
The brake and clutch fluid level is too low 3 229.