Page 81 of 247
Instruments and controls79
Adjustable sensitivity of the rain
sensor
Turn the adjuster wheel to adjust the
sensitivity:
low
sensi‐
tivity=turn adjuster wheel
downwardshigh
sensi‐
tivity=turn adjuster wheel
upwards
Keep the sensor free from dust, dirt
and ice.
Windscreen and headlight
washer
Pull lever. Washer fluid is sprayed
onto the windscreen and the wiper
wipes a few times.
If the headlights are on, washer fluid is also sprayed onto the headlights,
provided that the lever is pulled
sufficiently long. Afterwards the
headlight washer system is
inoperable for 5 wash cycles or until
engine or headlights have been
switched off and on again.
Page 85 of 247
Instruments and controls83Cigarette lighter
The cigarette lighter is located in the
front console.
Press in cigarette lighter. It switches off automatically once the element is
glowing. Pull out lighter.
Ashtrays
Caution
To be used only for ash and not forcombustible rubbish.
The portable ashtray can be placed inthe cupholders.
Warning 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.
Page 90 of 247

88Instruments and controls
Control indicators in the centreconsole
Turn signal
O illuminates or flashes green.
Illuminates briefly The parking lights are switched on.
Flashes A turn signal or the hazard warning
flashers are activated.
Rapid flashing: failure of a turn signal
light or associated fuse, failure of turn
signal light on trailer.
Bulb replacement 3 188, Fuses
3 196.
Turn signals 3 117.
Seat belt reminder Seat belt reminder on frontseats X for driver's seat illuminates or
flashes red.
k for front passenger seat illuminates
or flashes red, when seat is occupied.
Illuminates
After the ignition has been switched
on until the seat belt has been
fastened.
Flashes
After having started the engine for a
maximum of 100 seconds until the
seat belt has been fastened.
Airbag, belt tensioners and
anti-roll bars
v illuminates red.When the ignition is switched on, the
control indicator illuminates for
approx. 4 seconds. If it does not
illuminate, does not extinguish after
4 seconds or illuminates whilst
driving, there is a fault in the airbag
system, in the belt tensioner or the
deployable anti-roll bars. The airbags, belt pretensioners and anti-roll barsmay fail to trigger in the event of an
accident.
Deployment of the belt tensioners,
airbags or deployable anti-roll bars is
indicated by continuous illumination
of v.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Airbag system, belt tensioners 3 56,
3 53. Rollover protection system
3 42.
Airbag deactivation V illuminates yellow.
Page 91 of 247

Instruments and controls89
Illuminates for approx. 60 seconds
after the ignition is switched on. The
front passenger airbag is activated.
* illuminates yellow.
The front passenger airbag is
deactivated 3 61.9 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.
Brake and clutch system Brake and clutch fluid level
R illuminates red.
The brake and clutch fluid level is too low 3 185.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates after the ignition is
switched on if the manual parking
brake is applied 3 145.
Operate pedal
- illuminates or flashes yellow.
Page 95 of 247

Instruments and controls93
IlluminatesLevel in fuel tank is too low.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Catalytic converter 3 140.
Bleeding the diesel fuel system
3 187.
Immobiliser d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
Exterior light
8 illuminates green.
The exterior lights are on 3 110.
High beam C illuminates blue.
Illuminates when high beam is on or
during headlight flash 3 111 , or when
high beam is on with high beam assist
or intelligent light range 3 114.High beam assist
l illuminates green.
The high beam assist or intelligent
light range is activated 3 112,
3 114.
Adaptive forward lighting
f illuminates or flashes yellow.
Illuminates Fault in system.
Seek the assistance of a workshop.
Flashes
System switched to symmetrical low
beam.
Control indicator f flashes for approx.
4 seconds after the ignition is switched on as a reminder that the
system has been activated 3 113.
Automatic light control 3 111.
Fog light > illuminates green.
The front fog lights are on 3 118.Rear fog light
r illuminates yellow.
The rear fog light is on 3 118.
Cruise control
m illuminates white or green.
Illuminates white
The system is on.
Illuminates green
Cruise control is active.
Cruise control 3 151.
Vehicle detected ahead
A illuminates green.
A vehicle ahead is detected in the
same lane.
Forward collision alert 3 154.
Door open h is indicated as symbol in the Driver
Information Centre when a door or the
boot lid is open.
Page 96 of 247
94Instruments and controlsInformation displaysDriver Information Centre The Driver Information Centre (DIC)
is located in the instrument cluster
between speedometer and
tachometer.
The following main menus can be
indicated in the Display and selected by pushing the MENU button on the
turn signal lever. Menu symbols are
indicated in the top line of the display:■ Vehicle Information Menu X
■ Trip/Fuel Information Menu W
■ ECO Information Menu s
Some of the displayed functions differ
when the vehicle is being driven or at a standstill. Some functions are only
available when the vehicle is being
driven.
Vehicle personalisation 3 102.
Memorised settings 3 20.
Selecting menus and functions
The menus and functions can be selected via the buttons on the turn
signal lever.Press the MENU button to switch
between the menus or to return from
a submenu to the next higher menu
level.
Turn the adjuster wheel to highlight a
menu option or to set a numeric value.
Page 103 of 247

Instruments and controls101
Messages in the Driver
Information Centre (DIC)
The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
The system displays messages
regarding the following topics:
■ Service messages
■ Fluid levels
■ Anti-theft alarm system
■ Brakes
■ Ride control systems
■ Driver assistance systems
■ Cruise control
■ Speed limiter
■ Parking assist systems
■ Lighting, bulb replacement
■ Wiper/washer system
■ Doors, windows
■ Soft top
■ Load compartment, boot lid
■ Radio remote control
■ Seat belts
■ Airbag systems
■ Engine and transmission
■ Tyre pressure
■ Diesel particle filter
■ Vehicle battery status
Messages in the
Colour-Info-Display
Some important messages may
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
When starting the engine or
whilst driving Only one warning chime will sound at
a time.
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
■ If seat belt is not fastened.
■ If a door or the boot lid is not fully closed when starting off.
■ If the soft top is not completely opened or closed.
■ If the soft top lid is not completely closed.
■ If the load compartment partition is folded in when operating the soft
top.
■ If a certain speed is exceeded with parking brake applied.
■ If a certain speed is exceeded when
operating the soft top.
■ If a programmed speed or speed limit is exceeded.
Page 104 of 247

102Instruments 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 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 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 20.
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