Page 91 of 263

Instruments and controls89Flashes 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 3 192.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates after the ignition is
switched on if the manual parking
brake is applied 3 150.
Operate pedal - illuminates or flashes yellow.
Illuminates
Brake pedal must be depressed to release the electric parking brake
3 150.
Clutch pedal must be depressed to
start the engine in Autostop mode.
Stop-start system 3 137.
Flashes
Clutch pedal must be depressed for a main start of the engine 3 16, 3 136.
On some versions, the operate pedal
message is indicated in the Driver
Information Centre 3 100.
Electric parking brake m illuminates or flashes red.
Illuminates
Electric parking brake is applied
3 150.Flashes
Electric parking brake is not fully applied or released. Switch on
ignition, depress brake pedal and
attempt to reset the system by first
releasing and then applying the
electric parking brake. If m remains
flashing, do not drive and seek the
assistance of a workshop.
Electric parking brake fault j illuminates or flashes yellow.
Illuminates Electric parking brake is operating
with degraded performance 3 150.
Flashes
Electric parking brake is in service
mode. Stop vehicle, apply and
release the electric parking brake to
reset.
Page 92 of 263

90Instruments and controls9Warning
Have the cause of the fault
remedied immediately by a
workshop.
Antilock brake system
(ABS)
u illuminates yellow.
Illuminates for a few seconds after the ignition is switched on. The system is
ready for operation when the control
indicator extinguishes.
If the control indicator does not
extinguish after a few seconds, or if it illuminates while driving, there is a
fault in the ABS. The brake system
remains operational but without ABS
regulation.
Antilock brake system 3 149.
Upshift R with the number of a higher gear is
indicated or pops up as a full page in
the Driver Information Centre when
upshifting is recommended for fuel
saving reasons.
EcoFlex drive assistant 3 93.
Power steering
c illuminates yellow.
Illuminates with power steering
reduced
Power steering is reduced due to
overheating of the system. Control
indicator extinguishes when the
system has cooled down.
Stop-start system 3 137.
Illuminates with power steering disabled
Failure in the power steering system.
Consult a workshop.
Lane departure warning) illuminates green or flashes yellow.
Illuminates green
System is switched on and ready to
operate.Flashes yellow
System recognises an unintended
lane change.
Electronic Stability Control off
n illuminates yellow.
The system is deactivated.
Electronic Stability Control and 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
Page 93 of 263

Instruments and controls91operational. Driving stability,
however, may deteriorate depending on road surface conditions.
Have the cause of the fault remedied
by a workshop.
Electronic Stability Control (ESC) 3 153, Traction Control system (TC)
3 152.
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 3 141, Stop-start
system 3 137.
AdBlue
Y flashes yellow.
AdBlue level is low. Refill AdBlue soon to avoid prevention of the
engine start.
AdBlue 3 142.Tyre pressure monitoring
system
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 system3 210.
Engine oil pressure
I illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Page 94 of 263

92Instruments and controlsIlluminates 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 3 189.
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 3 142.
Bleeding the diesel fuel system
3 194.
Immobiliser d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
Exterior light
8 illuminates green.
The exterior lights are on 3 111.
High beam
C illuminates blue.
Illuminates when high beam is on or
during headlight flash 3 113 , or when
high beam is on with high beam assist
or intelligent light range 3 115.
High beam assist
l illuminates green.
The high beam assist or intelligent light range is activated 3 113,
3 115.
Adaptive forward lighting f illuminates or flashes yellow.
Illuminates
Fault in system.
Seek the assistance of a workshop.
Page 97 of 263
Instruments and controls95
●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 3 161
Trip/Fuel Information Menu W
Press MENU to select W.
Turn the adjuster wheel to select a
page:Page 1:
● trip odometer 1
● average consumption 1
● average speed 1
Page 2: ● trip odometer 2
● average consumption 2
● average speed 2
Page 99 of 263

Instruments and controls97Additionally, the control indicator i
in the fuel gauge illuminates or
flashes 3 92.
Instantaneous consumption
Displays the instantaneous
consumption.
ECO Information Menu s
Press MENU to select s.
Turn the adjuster wheel to select a page:
● Shift indication : Current gear is
indicated inside an arrow. The
digit 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 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
Page 102 of 263

100Instruments and controlsVehicle messagesMessages are indicated in the Driver
Information Centre, in some cases
together with a warning and signal
sound.
Press SET/CLR , MENU or turn the
adjuster wheel to confirm a message.
Messages in the Driver
Information Centre
The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
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 103 of 263

Instruments and controls101● 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
● 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 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