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90Instruments and controlsIlluminates when the engine is
running
Stop, switch off engine. Vehiclebattery 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 is
running
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
R illuminates red.
The brake and clutch fluid level is too low 3 193.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates after the ignition is
switched on if the manual parking
brake is applied 3 151.
Operate pedal - illuminates or flashes yellow.
Illuminates
Brake pedal must be depressed to release the electric parking brake
3 151.
Clutch pedal must be depressed to
start the engine in Autostop mode.
Stop-start system 3 138.
Flashes
Clutch pedal must be depressed for a main start of the engine 3 16, 3 137.
On some versions, the operate pedal
message is indicated in the Driver
Information Centre 3 101.
Electric parking brake m illuminates or flashes red.
Illuminates
Electric parking brake is applied
3 151.
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92Instruments and controlsIlluminates green
System is switched on and ready to
operate.
Flashes yellow
System recognises an unintended
lane change.
Electronic Stability Controloff
n illuminates yellow.
The system is deactivated.
Electronic Stability Controland Traction Control system
b illuminates or flashes yellow.
Flashes
The system is actively engaged.
Engine output may be reduced and
the vehicle may be braked
automatically to a small degree.Illuminates
A fault in the system is present. A
warning message appears in the
Driver Information Centre. Continued
driving is possible. The system is not
operational. Driving stability,
however, may deteriorate depending
on road surface conditions.
Have the cause of the fault remedied
by a workshop.
Electronic Stability Control (ESC)
3 154, Traction Control system (TC)
3 153.
Traction Control system off
k illuminates yellow.
The system is deactivated.
Preheating
! illuminates yellow.
Preheating is activated. Only
activates when outside temperature
is low.
Diesel particle filter
% illuminates or flashes yellow.The diesel particle filter requires
cleaning.
Continue driving until %
extinguishes. If possible, do not allow engine speed to drop below
2000 rpm.
Illuminates
The diesel particle filter is full. Start
cleaning process as soon as
possible.
Flashes
The maximum filling level of the filter
is reached. Start cleaning process
immediately to avoid damage to the
engine.
Diesel particle filter 3 142, Stop-start
system 3 138.
AdBlue
Y flashes yellow.
AdBlue level is low. Refill AdBlue
soon to avoid prevention of the
engine start.
AdBlue 3 143.
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Instruments and controls93Tyre pressure monitoringsystem
w illuminates or flashes yellow.
Illuminates
Tyre pressure loss. Stop immediately
and check tyre pressure.
Flashes
Fault in system or tyre without pressure sensor mounted (e.g. spare wheel). After 60-90 seconds the
control indicator illuminates
continuously. Consult a workshop.
Tyre pressure monitoring system
3 211.
Engine oil pressure
I illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.Illuminates when the engine is
runningCaution
Engine lubrication may be
interrupted. This may result in
damage to the engine and/or
locking of the drive wheels.
1. Depress clutch.
2. Select neutral gear, set selector lever to N.
3. Move out of the flow of traffic as quickly as possible without
impeding other vehicles.
4. Switch off ignition.
9 Warning
When the engine is off,
considerably more force is needed
to brake and steer. During an
Autostop the brake servo unit will still be operational.
Do not remove key until vehicle is
stationary, otherwise the steeringwheel lock could engage
unexpectedly.
Check oil level before seeking the
assistance of a workshop 3 190.
Low fuel
i illuminates or flashes yellow.
Illuminates
Level in fuel tank is too low.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Catalytic converter 3 143.
Bleeding the diesel fuel system
3 195.
Immobiliser d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
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96Instruments and controlsVehicle Information Menu X
Press MENU to select X.
Turn the adjuster wheel to select a
submenu. Press SET/CLR to confirm.
Follow the instructions given in the
submenus.
Depending on the version, the
possible submenus may include:
● Unit : displayed units can be
changed
● Tyre Pressure : checks tyre
pressure of all wheels during
driving 3 211
● Tyre Load : select tyre pressure
category according to the actually inflated tyre pressure
3 211
● Remaining Oil Life : indicates
when to change the engine oil and filter 3 85
● 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 3 173
● Following Dist. : displays the
distance to a preceding moving
vehicle 3 162
Trip/Fuel Information Menu W
Press MENU to select W.
Turn the adjuster wheel to select a
page:
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Instruments and controls99potential 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-DisplayDepending on the Infotainment
system, the Graphic-Info-Display is
available in two versions.
Graphic-Info-Display indicates:
● time 3 80
● outside temperature 3 80
● date 3 80
● electronic climate control settings
3 128
● Infotainment system, see description in the Infotainment
manual
● settings for vehicle personalisation 3 103
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102Instruments and controls● speed limiter
● forward collision alert
● parking assist systems
● lighting, bulb replacement
● wiper/washer system
● doors, windows
● soft top
● load compartment, boot lid
● side blind spot alert
● traffic sign assistant
● lane departure warning
● radio remote control
● seat belts
● airbag systems
● engine and transmission
● tyre pressure
● diesel particle filter
● vehicle battery status
● selective catalytic reduction, diesel exhaust fluid (DEF),
AdBlue 3 143Messages 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.
● If a warning message appears in the 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.
● If AdBlue needs to be refilled.
When the vehicle is parked and/or the driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.
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Instruments and controls103Battery voltageWhen the vehicle battery voltage isrunning 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 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 108 of 263

106Instruments 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 3 171.
● 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.