Warning lights
Introduction
This chapter contains information on the following subjects:
Automatic Transmission
16
Handbrake
16
Brake system
16
Seat belt warning light
17
Power steering
17
Traction Control System (ASR)
17
Traction control system (TCS) off
18
Electronic Stability Control (ESC)
18
Antilock brake system (ABS)
18
Rear fog light
19
Exhaust inspection system
19
Glow plug system (diesel engine)
19
Engine performance check (petrol engine)
19
Security Systems
19
Tyre inflation pressure
20
Brake linings
20
Lane following system (Lane Assist)
20
Turn signal system
20
Trailer turn signal lights
20
Fog lights
21
Cruise control system
21
Selector lever lock
21
Main beam
21
The warning lights 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 illuminate briefly as a func-
tion test.
If the tested systems are OK, the corresponding warning lights go out a few sec-
onds after switching on the ignition.
The condition of some features and systems is shown by the warning icons on
the display » page 21.
The warning lights are at the following locations in the instrument cluster » Fig. 2
on page 11.
› Revolutions counter 1
›Speedometer
3
›Bar with warning lights
5WARNING■
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 dis-
tance from the traffic, switch off the engine and activate the hazard warning
light system » page 61. The warning triangle must be set up at the prescri-
bed distance - observe the national legal provisions when doing so.
■
The engine compartment of your car is a hazardous area. While working in
the engine compartment, be sure to observe the following warn- ings » page 215 , Engine compartment .
15Instruments and warning lights
Rear fog lightFirst read and observe the introductory information and safety warn-
ings
on page 15.
The warning light comes on when the rear fog light is switched on.
Further information » page 60, Rear fog light .
Exhaust inspection system
First read and observe the introductory information and safety warn-
ings
on page 15.
If the warning light
lights up, there is a fault in the exhaust inspection system.
The system allows the vehicle to run in emergency mode.
Seek assistance from a specialist garage immediately.
Glow plug system (diesel engine)
First read and observe the introductory information and safety warn-ings
on page 15.
The warning light
comes on after the ignition has been switched on. Once the
light has gone out, the engine can be started immediately.
There is a fault in the glow plug system if the warning light
does not come on
at all or lights up continuously .
If the warning light
begins to flash while driving, a fault exists in the engine
control. The system allows the vehicle to run in emergency mode.
Seek assistance from a specialist garage immediately.
Engine performance check (petrol engine)
First read and observe the introductory information and safety warn-ings
on page 15.
If the warning light
lights up, there is a fault in the engine control. The system
allows the vehicle to run in emergency mode.
Seek assistance from a specialist garage immediately.
Security Systems
First read and observe the introductory information and safety warn-
ings
on page 15.
Fault with airbag system
When the warning light lights up and the following message appears in the in-
strument cluster display, there is a fault with the airbag system.
Error: airbag
AIRBAG ERROR
The functionality of the airbag system is monitored automatically even if one of
the airbags is switched off.
One of the airbags or a belt tensioner has been disabled by the diagnostic tool
› The warning light
lights up for approx. 4 seconds after switching on the igni-
tion and then flashes again for approx. 12 seconds.
› The following message is shown in the information cluster display.
Airbag/ belt tensioner deactivated.
AIRBAG/ BELT TENSIONER OFF
The front passenger airbag has been disabled with the key switch › The warning light
comes on for about 4 seconds after the ignition has been
switched on.
› The warning light
in the display
in the middle of the dash
panel lights up after switching on the ignition » page 191.
ProActive passenger protection When the warning light
lights up and the following message appears in the in-
strument cluster display, there is a fault with the airbag system. Seek assistance
from a specialist garage immediately.
Proactive passenger protection not available.PROACTIVE PASSENGER PROTECT NOT AVAIL
or Proactive passenger protection: funct. restricted.
LIMITED PROACTIVE PASSENGER PROTECT
19Instruments and warning lights
Fog lightsFirst read and observe the introductory information and safety warn-
ings
on page 15.
The warning light comes on when the fog lights are operating.
Further information » page 59, Fog lights .
Cruise control system
First read and observe the introductory information and safety warn-
ings
on page 15.
The warning light
comes on when the cruise control is active.
Further information » page 146, Cruise Control System .
Selector lever lock
First read and observe the introductory information and safety warn-
ings
on page 15.
If the warning light
lights up, operate the brake pedal.
Further information » page 127, Modes and use of selector lever .
Main beam
First read and observe the introductory information and safety warn-ings
on page 15.
The warning light
comes on when the main beam is selected or when the
headlight flasher is operated.
Further information » page 56, Turn signal and main beam .
Warning icons in the display
Introduction
This chapter contains information on the following subjects:
Rear seat belt warning
22
Alternator
22
Coolant
22
Engine oil pressure
23
Engine oil level
23
Lamp failure
24
Diesel particulate filter (diesel engine)
24
Windscreen washer fluid level
24
Fuel reserve
25
Headlight assist
25
START-STOP-system
25
Ice warning
25
Water in the fuel filter (diesel engine)
25
The warning icons indicate the status of certain functions or faults.
The warning icons are indicated in the display of the instrument cluster » page 12.
After switching on the ignition, some warning icons illuminate briefly as a func- tion test.
If the tested systems are OK, the corresponding warning icons go out a few sec-
onds after switching on the ignition.
Depending on the meaning of the warning icon, the icon
or
will also illumi-
nate in the bar with the warning lights
5
» Fig. 2 on page 11.
Some warning icons can be accompanied by acoustic signals and messages in the
instrument cluster display.
The status of some features and systems is shown by the warning
lights » page 15 .
SymbolMeaningWarningDanger 21Instruments and warning lights
Lights and visibility
Lights
Introduction
This chapter contains information on the following subjects:
Side lights and low beam
55
Daylight running lights (DAY LIGHT)
55
Turn signal and main beam
56
Automatic driving lamp control
57
Adaptive headlights (AFS)
57
Headlight assist
58
Fog lights
59
Fog lights with the CORNER function
59
Rear fog light
60
COMING HOME / LEAVING HOME
60
Hazard warning light system
61
Parking lights
61
The lights work only with the ignition on, unless otherwise stated.
On models fitted with right-hand steering, the position of some of the controls
differs from that shown in » Fig. 28 on page 55. The symbols which mark the
positions of the controls are identical.
Keep the headlights lenses clean. The following guidelines must be ob-
served » page 207 , Headlight lenses .
WARNING■
The activation of the lights should only be undertaken in accordance with
national legal requirements.■
The driver is always responsible for the correct settings and use of the
lights.
■
The automatic driving lamp control only operates as a support and does
not release the driver from his responsibility to check the light and, if necessa-
ry, to switch on the light depending on the given light conditions. The light sensor cannot, for example, detect rain or snow. Under these conditions we
recommend switching on the low beam or fog lights!
Note
■ If there is a fault in the light switch, the low beam comes on automatically.■The headlights may mist up temporarily. When the driving lights are switched
on, the light outlet surfaces are free from mist after a short period, although the
headlight lenses may still be misted up in the peripheral areas. This mist has no
influence on the life of the lighting system.■
The instruments are also illuminated when the side light, low or high beam light
is switched on. The brightness of the instrument lighting can be activated or de- activated in the Infotainment » Operating instructions for Infotainment , chap-
ter Vehicle settings (CAR button) .
54Using the system
Side lights and low beamFig. 28
Light switch and control dial for
the headlight beam range regu-
lation
First read and observe the introductory information and safety warn-
ings on page 54.
Light switch positions
A
» Fig. 28 .
Switching off lights (except daytime running lights) Automatic switching lights on and off » page 57
Switch on the parking light or parking lights on both sides » page 61
Switching on the low beam
Switch on the front fog lamp » page 59
Switching on the rear fog light » page 60
Headlight beam control
Turning the rotary switch
B
» Fig. 28 from position
to
gradually activates the
headlight beam control, thereby shortening the beam of light.
The positions of the width of illumination correspond approximately to the fol-
lowing car load.
Front seats occupied, boot empty
All seats occupied, boot empty
All seats occupied, boot loaded
Driver seat occupied, boot loaded
WARNINGAlways adjust the headlight beam to satisfy the following conditions.■The vehicle does not dazzle other road users, especially oncoming vehicles.■
The beam range is sufficient for safe driving.Note■ We recommend you adjust the headlight beam when the low beam is switched
on.■
The Bi-Xenon bulbs adapt automatically to the load and driving state of the ve-
hicle when the ignition is switched on and when driving. Vehicles that are equip- ped with Bi-Xenon headlights do not have a manual headlight range adjustment
control.
■
The low beam continues to shine while the ignition is switched on and the light
switch is in the position or . After switching off the ignition, the low beam
is switched off automatically and only the side lights come on. The side light goes
out after the ignition key is removed.
Daylight running lights (DAY LIGHT)
First read and observe the introductory information and safety warn-
ings
on page 54.
The daytime running lights function provides the lighting of the front of the vehi-
cle.
Switching on daytime running lights
›
The light switch
A
is in position
or turn
» Fig. 28 on page 55.
Activating or dectivating daytime running lights function on vehicles with Infotainment
The daytime running light can be activated or deactivated in the Infotain-
ment » Operating instructions for Infotainment , chapter Vehicle settings (CAR
button) .
Deactivating the daytime running lights feature on vehicles without
Infotainment
›
Pull the turn signal and main beam lever to the steering wheel and push down-
wards » Fig. 29 on page 56.
›
At the same time switch on the ignition and hold the lever down in this position
for at least 3 seconds.
Activating the daytime running lights feature on vehicles without Infotainment
›
Pull the turn signal and main beam lever to the steering wheel and push up- wards » Fig. 29 on page 56.
›
At the same time switch on the ignition and hold the lever down in this position
for at least 3 seconds.
55Lights and visibility
Automatic driving lamp controlFig. 30
Light switch
First read and observe the introductory information and safety warn-
ings on page 54.
If the light switch is in position
» Fig. 30 , the parking lights, low beam and
number plate lights are switched on or off automatically.
The light is regulated based on data gathered by the light sensor attached be- tween the windscreen and the interior mirror.
The sensitivity of the light sensor can be activated or deactivated in the Infotain-
ment » Operating instructions for Infotainment , chapter Vehicle settings (CAR
button) .
If the light switch is in position
, the symbol
lights up next to the light
switch. If the light is switched on automatically, the symbol
next to the light
switch also lights up.
Automatic headlight control in rain
If the light switch is in position
and if automatic wiping in rain or wiping (posi-
tion 2 or 3) is switched on for longer than 30 seconds » page 66, the side lights
and low beam will switch on automatically.
The light switches off when automatic wiping/wiping (position 2 or 3) is not
switched on for longer than approx. 4 seconds.
The automatic headlight control in rain can be activated or deactivated in the In-fotainment » Operating instructions for Infotainment , chapter Vehicle settings
(CAR button) .
CAUTION
Do not affix any stickers or similar objects in front of the light sensor on the wind-
screen, so that its functionality is not impaired or disabled.
Adaptive headlights (AFS)
First read and observe the introductory information and safety warn-ings
on page 54.
The AFS system works in tandem with automatic driving lamp control , please
read the following » page 57.
The AFS system makes sure the street remains lit up depending on the traffic and weather situation.
The system automatically adjusts the cone of light in front of the vehicle based
on the vehicle speed, whether the windscreen wipers are in use, the rear fog
lights, and data from Infotainment Navigation.
The AFS system can work only if the following condition is met. The light switch is in the position
.
The AHL system operates in the following modes.
Out of town mode
The cone of light in front of the vehicle is similar to the low beam. The mode is
active if none of the following modes are active.
City mode
The cone of light in front of the vehicle is adjusted so that it illuminates the adja- cent pavement, crossings, etc. The mode is active at speeds of 15-50 km/h.
Motorway mode
The cone of light in front of the vehicle is adjusted so that the driver can respond in time to an obstruction or other hazard in time. The mode is active at speeds
above 110 km/h.
Rain mode
The cone of light in front of the vehicle is adjusted so that the driver can reduce the glare from oncoming vehicles in rain.
The mode is active at speeds of 50 – 90 km/h and if the windscreen wipers con-tinuously operate for a period of time longer than 2 minutes. The mode is deacti-
vated when the windscreen wipers are switched off for longer than 8 minutes.
Fog mode
The cone of light in front of the vehicle is adjusted so that the driver is not daz-
zled by the reflection of the cone of light by fog in front of the vehicle.
57Lights and visibility
The mode is active at speeds of 15 – 70 km/h and if the rear fog light is switchedon for a period of time longer than 10 seconds. The mode is deactivated when the
rear fig light is switched off for longer than 5 seconds.
Dynamic cornering lights
The cone of light in front of the vehicle is adjusted to the steering angle so that the road in the curve is illuminated. This function is active at speeds greater than
10 km.h and in all AFS modes.
Tourist light (Travel mode)
This mode makes it possible to drive in countries with opposing traffic system (driving on the left/right) without dazzling the oncoming vehicles.
When the “tourist light” mode is active, the above-mentioned modes and the side
swivel of the headlights is deactivated.
The "Tourist light" mode can be configured in the Infotainment » Operating in-
structions for Infotainment , chapter Vehicle settings (CAR button) .WARNINGIf the AFS system is defective, the headlights are automatically lowered to the
emergency position, which prevents a possible dazzling of oncoming traffic. This reduces the cone of light in front of the vehicle. Drive carefully and visit a
specialist garage as soon as possible.
Note
If the Eco driving mode is selected, the AFS system is deactivated » page 161.
Headlight assist
Fig. 31
Operating lever: Headlight assist
First read and observe the introductory information and safety warn-
ings on page 54.
The Headlight assist switches the headlights on/off automatically depending on
the environmental conditions.
The headlight is regulated based on data gathered by the camera attached be-
tween the windscreen and interior mirror.
The function of high beam assist can be activated or deactivated in the Infotain-ment » Operating instructions for Infotainment , chapter Vehicle settings (CAR
button) .
The headlight can switch off automatically at speeds above 60 km/h. The head-
light switches off automatically when the speed falls below 30 km/h.
When the assistant automatically switches on the main beam, warning light
is
lit in the instrument cluster.
Activating
›
Turn the light switch to the
» Fig. 30 on page 57 position.
›
Place the lever in position
A
(spring-tensioned position) » Fig. 31.
The warning icon
for the activated headlight assist appears in the display of
the instrument cluster.
Deactivating
›
If the headlight is currently switched on automatically, move the lever into posi-
tion
B
(spring-tensioned position) » Fig. 31.
›
If the headlight is not currently switched on automatically, move the lever into
position
A
(the headlight switches on) followed by position
B
.
If you want to reactivate the Assist, put the lever back into position
A
.
The Assist can also be deactivated when the light switch is turned from position
to another position.
Manually switching on the headlights
If the headlight is not switched on automatically, it can be switched on manually -
put the lever into position
A
. The assistant is deactivated, the warning icon
goes out.
Manually switching off the headlights
If the headlight is switched on automatically, it can be switched off manually -
put the lever into position
B
. The assistant is deactivated, the warning icon
goes out.
58Using the system
Information message
The messages and information are indicated in the instrument cluster display. Fault: Light Assist
LIGHT ASSIST FAULT
Seek help from a specialist garage. Light Assist: clean the windscreen!
WINDSCREEN PLEASE CLEAN
Check for any obstacles on the windscreen in the viewing area of the camera.WARNINGHeadlight assist only functions as a support and does not relieve the driver of
his responsibility to check the headlights and light beam and, if necessary, to
switch on the lights depending on the light conditions. Manual operation may be required in the following situations.■
Poor visibility conditions, e.g. fog, heavy rain, thick snowfall.
■
The oncoming traffic is partially blocked on roads or motorways.
■
Passing poorly lit road users, e.g. cyclists.
■
Driving around “sharp” curves.
■
Driving on sharp slopes up/large inclines.
■
Driving through poorly-lit locations.
■
Driving over highly reflective surfaces.
■
The windscreen around the camera is dirty, iced up, misted up, or covered by
stickers.
■
Near the camera lens there is a light source, such as the screen of an exter-
nal navigation system.
CAUTION
Do not attach any stickers or similar objects to the windscreen to avoid impairing
the functions of the Assist system.Fog lightsFig. 32
Light switch
First read and observe the introductory information and safety warn-
ings on page 54.
Switching on/off
›
Turn the light switch to position
,
or
» Fig. 32 .
›
Pull the light switch to position
1
.
The rear fog light is switched off in the reverse order.
The warning light
lights up in the instrument cluster when the fog lights are
switched on » page 15.
Fog lights with the CORNER function
First read and observe the introductory information and safety warn-ings
on page 54.
The CORNER function improves illumination of the vehicle surroundings when
turning, parking and the like, by switching on the fog lights on the respective side
of the vehicle.
The CORNER function is switched on automatically if the following conditions
are met.
The turn signal is switched on or the front wheels are turned sharply to the
right or left 1)
.
The engine is running.
1)
If both switch-on conditions are conflicting, for example, if the front wheels are turned to the left and
the right turn signal light is switched on, the turn signal light has the higher priority.
59Lights and visibility