
Some warning lights can be accompanied by acoustic signals and messages in
the display of the instrument cluster.
After switching on the ignition, some warning lights light up briefly as a func-
tion test.
If the tested systems are OK, the corresponding warning lights go out a few
seconds after switching on the ignition or after starting the engine.
Warning lights in the display
Depending on the importance the warning light
(danger) or
(warning) illu-
minate along with some of the warning lights in the list with the warning
lights.
Depending on vehicle equipment, some warning lights may be displayed in col-
our on the display. For example, the coolant warning light may be displayed as
follows.
▶ - Segment display/monochromatic (“black and white”) MAXI DOT display
▶ - Coloured MAXI DOT displayWARNING■
Ignoring illuminated warning lights and related messages or instructions
in the display of the instrument cluster may lead to serious personal injury
or damage to the vehicle.■
If you have to stop for technical reasons, then park the vehicle at a safe
distance from the traffic, switch off the engine and activate the hazard
warning light system » page 73. Place the warning triangle at the prescri-
bed distance.
■
The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 194, Engine compartment .
Handbrake
Read and observe
on page 32 first.
illuminates – the hand brake is applied.
An acoustic signal will sound if you drive the vehicle above 5 km/h while the
handbrake is still on.
Release the handbrake!RELEASE HANDBRAKE Brake system
Read and observe
on page 32 first.
illuminates – the brake fluid level in the braking system is too low.
Brake fluid: owner's manual!BRAKE FLUID PLEASE CHECK›
Stop the vehicle, switch off the engine, and check the level of the brake fluid
» page 200 .
WARNING■
If warning light illuminates simultaneously with warning light
» page 34 , Anti-lock braking system (ABS) , do not continue your
journey! Seek help from a specialist garage.■
A fault to the ABS system or the braking system can increase the vehi-
cle's braking distance – risk of accident!
Seat belt warning light
Read and observe
on page 32 first.
illuminates - the driver or front passenger has not fastened their seat belt.
At a speed of more than approximately 30 km/h the warning light flashes
and an audible warning sounds at a time.
If the seat belt is not fastened by the driver or front passenger during the next
approx. 2 seconds, the warning signal is deactivated and the warning light
lights up permanently.
Adaptive Cruise Control (ACC)
Read and observe
on page 32 first.
illuminates - the ACC delay is not sufficient.
Apply the brake!›
Apply the brake.
For more information about the ACC system » page 150.
32Using the system

Power steering/steering lock (KESSY system)
Read and observe
on page 32 first.
Fault in the power steering
illuminates – this indicates a complete failure of the power steering and the
steering assist has failed (significantly higher steering forces).
illuminates – this indicates a partial failure of the power steering and the
steering forces can be greater.
Seek help from a specialist garage.
Steering lock defect (KESSY system)
An audible signal sounds as a warning.
flashes
Steering column lock faulty. Stop!STOP VEHICLE STEERING FAULTY
Park the vehicle,
stop driving . After switching off the ignition, it is no longer
possible to lock the steering, to activate the electrical components (e.g. Info-
tainment ), to switch on the ignition again and to start the engine. Seek help
from a specialist garage.
flashes
Steering lock: Workshop!STEERING WORKSHOP
Seek help from a specialist garage.
Steering column lock not unlocked (System KESSY)
flashes
Move the steering wheel!MOVE STEERING WHEEL
▶ Move the steering wheel slightly back and forth, thereby facilitating unlock-
ing the steering lock.
If the steering does also not unlock then, the help of a specialist garage is re-
quired.
Disconnecting the vehicle battery
If the vehicle's battery has been disconnected and reconnected, the warning
light comes on after switching on the ignition.
The warning light should go out after driving a short distance.
If, after the motor is restarted and a short drive, the indicator light does not go out, there is a system error.
Seek help from a specialist garage.
Traction control (TCS)
Read and observe
on page 32 first.
If your vehicle is equipped with the ESC system, the TCS is part of the ESC sys-tem » page 136 .
flashes - the TCS is now being activated.
TCS fault
Illumi-
nates
Error: traction controlASR ERROR
Seek help from a specialist garage.
If the warning light comes on after starting the engine, the TCS may be
switched off for technical reasons. ▶ Switch the ignition off and on again.
If the warning light does not illuminates after you switch the engine back
on, the TCS is fully functional again.
Disconnecting the vehicle battery
If the vehicle's battery has been disconnected and reconnected, the indicator
light comes on after switching on the ignition.
The warning light should go out after driving a short distance.
If, after a short drive, the indicator light does not go out, there is a system er-
ror.
Seek help from a specialist garage.
For more information about the TCS system » page 136.
Traction control system (TCS) off
Read and observe
on page 32 first.
illuminates – the TCS system is disabled.
Traction control (ASR) deactivated.ASR OFF
33Instruments and warning lights

NoteOn vehicles without the ESC system, the warning light does not illuminate
upon deactivation of the TCS system, but a message is only displayed on the
display of the instrument cluster.
Stability Control (ESC)
Read and observe
on page 32 first.
flashes - the ESC is now being activated.
ESC fault
Illumi-
nates
Error: stabilization control (ESC)ESC ERROR
Seek help from a specialist garage.
If the warning light comes on after starting the engine, the ESC system may
be switched off for technical reasons. ▶ Switch the ignition off and on again.
If the indicator light does not illuminate after you switch the engine back
on, the ESC is fully functional again.
Disconnecting the vehicle battery
If the vehicle's battery has been disconnected and reconnected, the indicator
light comes on after switching on the ignition.
The warning light should go out after driving a short distance.
If, after a short drive, the indicator light does not go out, there is a system er-
ror.
Seek help from a specialist garage.
For more information about the ESC system » page 136.
Anti-lock braking system (ABS)
Read and observe
on page 32 first.
illuminates – there is an ABS fault.
Error: ABSABS ERROR
The vehicle will only be braked by the normal brake system without the ABS.
Seek help from a specialist garage.WARNING■
If warning light illuminates simultaneously with warning light
» page 32 , Brake system , do not continue your journey! Seek help
from a specialist garage.■
A fault to the ABS system or the braking system can increase the vehi-
cle's braking distance – risk of accident!
Rear fog light
Read and observe
on page 32 first.
illuminates – the rear fog light is switched on.
Exhaust inspection system
Read and observe
on page 32 first.
illuminates – there is a fault in the emission control system. The system
makes possible operation emergency mode - there may be a noticeable reduc-
tion in engine performance.
Seek help from a specialist garage.
Glow plug system (diesel engine)
Read and observe
on page 32 first.
flashes – there is a fault in the engine management system. The system
makes possible operation emergency mode - there may be a noticeable reduc-
tion in engine performance.
There is a fault in the glow plug system if the warning light does not come
on or illuminates continuously.
Seek help from a specialist garage.
34Using the system

Engine performance check (petrol engine)Read and observe
on page 32 first.
illuminates – there is a fault in the engine management system. The system
makes possible operation emergency mode - there may be a noticeable reduc-
tion in engine performance.
Seek help from a specialist garage.
Safety systems
Read and observe
on page 32 first.
System fault
illuminates - there is a fault in the airbag system.
Error: airbagAIRBAG ERROR
Seek help from a specialist garage.
The front passenger airbag has been disabled with the key switch
Illuminates for around 4 seconds after the ignition has been switched on.
under the letters
in the middle of the dash panel illumi-
nates after switching on the ignition » page 19.
One of the airbags or a belt tensioner has been disabled by the diagnostic
tool
illuminates for approximately 4 seconds after the ignition is switched on
and then flashes for approximately 12 seconds.
Airbag/ belt tensioner deactivated.AIRBAG/ BELT TENSIONER OFF
ProActive passenger protection
illuminates and the following message is shown in the information cluster
display.
Proactive passenger protection not available.PROACTIVE PASSENGER PROTECT NOT AVAIL
or
Proactive passenger protection: funct. restricted.LIMITED PROACTIVE PASSENGER PROTECTThe seat belt for the driver and front passenger needs to be replaced. Seek
help from a specialist garage.WARNINGWhen a fault in the airbag system occurs, there is a risk of the system not
being triggered in the event of an accident. Therefore, this must be
checked immediately by a specialized garage.
Tyre pressure
Read and observe
on page 32 first.
Change of tyre pressure values
illuminates – there was a pressure change in one of the tyres.
An audible signal sounds as a warning.
›
Immediately reduce speed and avoid sudden steering and braking manoeu-
vres.
›
Stop the vehicle, turn the ignition off and check the tyres and their inflation
pressure » page 205 .
›
Correct the tyre pressure if necessary or replace the affected wheel
» page 213 or use the repair kit » page 217.
›
Store the tyre pressure values in the system » page 165.
System fault
flashes for approximately 1 minute and remains lit – there may be a fault in
the tyre pressure monitoring system.
›
Stop the vehicle, turn the ignition off and start the engine again.
If the warning light flashes after starting the engine again, there is a system
error.
Seek help from a specialist garage.
Disconnecting the vehicle battery
If the vehicle's battery has been disconnected and reconnected, the indicator
light comes on after switching on the ignition.
The warning light should go out after driving a short distance.
If, after a short drive, the indicator light does not go out, there is a system er-
ror.
Seek help from a specialist garage.
35Instruments and warning lights

If the coolant level is within the specified range and the warning light illumi-
nated again after ignition on, then there may be a malfunction of the cooling
fan.
▶ Switch off the ignition.
▶ Check the fuse for the radiator fan, replace if necessary.
If the coolant level and the fan fuse are OK and the warning light
illuminates
again after ignition on
do not continue to drive!
Seek help from a specialist garage.
Coolant temperature too high Illumi-
nates
Engine overheat. Stop! Owner's Manual!ENGINE OVERHEAT STOP
▶ Stop the vehicle and turn off the engine.
▶ Continue your journey only after the warning light has disappeared.
Engine oil pressure too low
Read and observe
on page 32 first.
flashes – the engine oil pressure is too low.
Oil pressure: stop! Owner's Manual!STOP VEHICLE OIL PRESSURE›
Stop the vehicle, switch off the engine, and check the engine oil level.
Even if the oil level is correct,
do not drive any further if the warning light is
flashing. Also do not leave the engine running at an idling speed.
Seek help from a specialist garage.
CAUTION
If for some reason it is not possible to top up the engine oil under the current
circumstances, do not continue driving! Switch off the engine and seek as-
sistance from a specialist garage.
Engine oil level
Read and observe
on page 32 first.
Engine oil level too low
Illumi-
nates
Oil level: add oil!ADD OIL▶ Stop the vehicle, switch off the engine, and check the engine oil level, top up
if necessary.
The warning light will go out if the bonnet is left open for more than 30 sec-
onds. If no engine oil has been replenished, the warning light will come on
again after driving about 100 km.
Engine oil level too high Illumi-
nates
Reduce oil level!OIL LEVEL TOO HIGH
▶ Stop the vehicle, switch off the engine, and check the engine oil level.
In the event of a high oil level, seek assistance from a specialist garage.
Fault on the engine oil level sensor
Illumi-
nates
Oil sensor: workshop!OIL SENSOR WORKSHOP
Seek help from a specialist garage.
CAUTION
If for some reason it is not possible to top up the engine oil under the current
circumstances, do not continue driving! Switch off the engine and seek as-
sistance from a specialist garage.
Lamp failure
Read and observe
on page 32 first.
illuminates – one of the lamps is defective. A message will appear con-
cerning the affected lamp.
An example message in the display of the instrument cluster
Check right dipped headlight beam!DIPPED HEADLIGHT CHECK RIGHT
Diesel particulate filter (diesel engine)
Read and observe
on page 32 first.
The diesel particulate filter separates the soot particles from the exhaust. The soot particles collect in the diesel particulate filter where they are burnt on a
regular basis.
illuminates – the filter is clogged with soot.
38Using the system

Adaptive Cruise Control (ACC)
Read and observe
on page 32 first.
Conditions of the ACC system
The warning lights
indicate the condition of the ACC system
» page 150 .
Distance warning (Front Assist)
Read and observe
on page 32 first.
illuminates – the safe distance to the vehicle in front is below the mini-
mum.
Information on the Front Assist system » page 155.
Advance warning/emergency brake (Front Assist)
Read and observe
on page 32 first.
illuminates – the system has recognized the risk of a collision or automati-
cally triggered an emergency braking manoeuvre.
Information on the Front Assist system » page 155.
OFF ROADmode
Read and observe
on page 32 first.
illuminates – the conditions for the engagement of OFF ROADmode are met.
flashes – the hill descent assistant is engaged at the moment.
For more information about OFF ROAD mode » page 138, OFF ROAD-mode .
Service
Read and observe
on page 32 first.
illuminates – note regarding a due service appointment
» page 49, Service
interval display .
Information system
Driver information system
Introduction
This chapter contains information on the following subjects:
Door, luggage compartment or bonnet warning
40
Auto-check control
40
Overspeed warning at 120 km/h
41
Gear recommendation
41
Depending on the vehicle's equipment, the information system vie the display
of the instrument cluster provides the following information.
▶ Driving data (multifunction display) » page 41.
▶ Data relating to the Maxi DOT display » page 45.
▶ Service interval display » page 49.
▶ Selector lever positions for an automatic gearbox » page 129.
▶ Information and alerts in the Assist systems » page 135.
WARNINGConcentrate fully at all times on your driving! As the driver, you are fully re-
sponsible for the operation of your vehicle.
Door, luggage compartment or bonnet warning
Read and observe
on page 40 first.
If at least one door is open, or the boot or bonnet is open, the display indicates
the relevant open door or boot/bonnet.
An acoustic signal will also sound if you drive the vehicle above 6 km/h when a
door is open.
Auto-check control
Read and observe
on page 40 first.
Certain functions and conditions of individual vehicle systems are checked
continuously when the ignition is switched on.
40Using the system

As long as the faults are not rectified the messages are always shown. After
they are displayed for the first time, the warning lights (danger) or (warn-
ing) continue to be indicated without information for the driver.
Overspeed warning at 120 km/h
Read and observe
on page 40 first.
This function only applies to certain countries.
An audible warning signal will sound when the vehicle speed exceeds 120
km/h. The audible warning signal is switched off when the vehicle speed falls
below 120 km/h.
Gear recommendation
Fig. 29
Information on the selected
gear / Gear recommendation
Read and observe on page 40 first.
A suitable gear is engaged, and if necessary a recommendation to shift to high
or lower gear is displayed.
A suitably engaged gear helps to reduce the fuel consumption and assist the
service life and reliability of the engine.
Display » Fig. 29
Optimal gear engaged
Recommended gear
Recommended gear
Besides showing the engaged gear, the arrow icon and the recommended
gear are displayed.
For instance, if
appears in this display, this means it is recommended that
you shift from 3rd into 4th gear.
For vehicles with automatic transmission the recommended gear will be
shown provided the mode for manual switching (Tiptronic) is selected.WARNINGThe driver is always responsible for selecting the correct gear in different
driving situations, such as overtaking.
Driving data (Multifunction display)
Introduction
This chapter contains information on the following subjects:
Operation
42
Information overview
42
Warning when exceeding the set speed
43
Memory
44
The driving data display is only possible with the ignition switched on.
After the ignition is switched on, the function that was last selected before
switching off the ignition is displayed.
For vehicles with a MAXI DOT display, the menu item
Driving data
must be selec-
ted and confirmed in the main menu » page 44.
The setting of the units and the switching on / off the display of some infor-
mation is available possible in the Infotainment » Owner´s Manual Infotain-
ment , chapter CAR - Vehicle Settings .
WARNINGConcentrate fully at all times on your driving! As the driver, you are fully re-
sponsible for the operation of your vehicle.41Information system

Current driving speed
The display is identical to the display on the speedometer.
Average speed
The indication is calculated continuously since the last deletion of the memory.
After erasing the memory, no data will appear for the first 300 m driven.
Distance travelled
The distance travelled since the memory was last erased is displayed.
The maximum distance indicated is 9999 km. The indicator is automatically set
back to zero if this period is exceeded.
Driving time
The time travelled since the memory was last erased is displayed.
The maximum distance indicated is 99 hours and 59 minutes. The indicator is
automatically set back to zero if this period is exceeded.
Convenience consumers
There, the total consumption of all consumer comfort in l / h is displayed.
Along with the consumption data, a list of the three consumers with the larg-
est share of fuel consumption (e.g. air conditioning and similar devices) is dis-
played.
Refuelling amount 1)
After the consumption of about 10 litres of fuel from the fully refuelled tank, an amount of fuel is displayed in l. This amount can now be safely refilled.
Natural gas quality
The details of the quality of natural gas are displayed as a percentage of be-
tween 70% to 100%.
The higher the value of natural gas, the lower is the consumption.
Coolant temperature
If the coolant temperature is in the range 80-110 °C, the engine operating tem-
perature is reached.
If the temperature lies below 80 °C or above 110 °C, avoid high engine revs, full
throttle and high engine loads.Warning when exceeding the set speed
Read and observe
on page 41 first.
The system offers the possibility to set a speed limit beyond which an audible
alarm will sound and the following warning message appears.
Speed ... exceeded.SPEED TOO HIGH
Adjust the speed limit while the vehicle is stationary
›
Select the menu item
Warning at
at (
) or
(
) and confirm.
›
Set the desired speed limit.
›
Confirm the set value, or wait several seconds; your settings will be saved
automatically.
The speed limit can be set in 5 km/h intervals.
Adjusting the speed limit while the vehicle is moving
›
Select the menu item
Warning at
at ( ) or
(
) and confirm.
›
Drive at the desired speed.
›
Confirm the current speed as the speed limit.
The set speed limit can be manually adjusted later if needed.
Deactivate speed limit
›
Select the menu item
Warning at
at ( ) or
(
) and confirm.
›
Confirm the stored value of the speed limits.
The speed limit will be disabled.
The speed limit set mode is stored even after the ignition is switched off and
on. After a gap between driving exceeding 2 hours, the pre-set speed limit is
deactivated.
1)
Only valid for some countries.
43Information system