Engine electronics check (petrol engine)35 Safety systems35
Tyre pressure
35
Brake linings
36
Fuel reserve
36
Lane departure warning (Lane Assist)
36
Turn signal system
36
Trailer turn signal lights
36
Fog lights
36
Speed regulating system / Speed limiter
37
Brake pedal (automatic transmission)
37
Parking brake - Auto Hold function
37
Main beam
37
Automatic transmission
37
Rear seat belt warning light
37
Alternator
37
Coolant
38
Engine oil pressure too low
38
Engine oil level
38
AdBlue ®
39
Lamp failure
39
Diesel particulate filter (diesel engine)
39
Windscreen washer fluid level
40
Headlamp assistant
40
START-STOP system
40
Low temperature displayed
40
Water in the fuel filter (diesel engine)
40
Automatic Distance Control (ACC)
40
Distance warning (Front Assist)
40
Advance warning / emergency braking (Front Assist)
41
Economy mode
41
Adaptive chassis control (DCC) fault
41
Service
41
The warning lights in the instrument cluster indicate certain functions or
faults.
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 specification, some warning lights may be displayed in
colour on the display. For example. the coolant warning lamp may be represen-
ted as follows.
▶ - Segment Display / monochromatic (“black and white”) MAXI DOT display
▶ - colour 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 switch on the hazard
warning lights » page 71. Place the warning triangle at the prescribed dis-
tance.
■
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 206, Engine compartment .
Parking brake
Read and observe
on page 32 first.
illuminates - the hand brake light is switched on.
Parking brake error
illumi-
nates
Fault: electric parking brakePARKING BRAKE FAULT
Seek help from a specialist garage.
Parking on a slope that is too steep
illumi-
nates
Parking brake: grad. too steep. Owner's manual!GRADIENT TOO STEEP
32Using the system
Speed regulating system / Speed limiterRead and observe
on page 32 first.
illuminates - the vehicle speed is limited by the speed regulator system
and/or the automatic distance control or by the speed limiter.
flashes – the speed set with the limiter has been exceeded.
Brake pedal (automatic transmission)
Read and observe
on page 32 first.
illuminates – apply the brake.
Parking brake - Auto Hold function
Read and observe
on page 32 first.
illuminates - the Auto Hold function is activated.
For more information about the Auto-Hold Function » page 146.
Main beam
Read and observe
on page 32 first.
illuminates – the main beam or the headlight flasher is switched on.
Automatic transmission
Read and observe
on page 32 first.
Gearbox overheated
The warning light is only shown in the MAXI DOTdisplay.
illumi-
nates
Gearbox overheated. Stop! Owner's manual!STOP VEHICLE GEARBOX OVERHEAT illumi-
nates
Gearbox overheated.GEARBOX OVERHEATED
▶
Do not continue to drive! Stop the vehicle and turn off the engine.
You can continue your journey as soon as the warning light disappears.
If the warning light does not go out, do not continue driving. Seek help from a
specialist garage.
Transmission problem
The warning light
is only shown in the MAXI DOTdisplay. illumi-
nates
Gearbox faulty. Workshop!GEARBOX FAULTY WORKSHOP illumi-
nates
Error: gearbox. Reverse gear not available.GEARBOX ERROR REV_ GEAR NOT AVAIL illumi-
nates
Error: gearboxGEARBOX ERROR
Seek help from a specialist garage.
Rear seat belt warning light
Read and observe
on page 32 first.
illuminates – a rear seat belt is not fastened.
illuminates – a rear seat belt is fastened.
When the seat belt is fastened/unfastened, the particular light lights up briefly
and indicates the current belt status!
Alternator
Read and observe
on page 32 first.
illuminates – the battery is not being charged whilst the engine is running.
Seek help from a specialist garage.
CAUTION
If in addition to the light the light lights up while driving, stop driving -
risk of engine damage! Switch off the engine and seek assistance from a spe-
cialist garage.37Instruments and warning lights
