Page 609 of 673
Display messages
Possible causes/consequences and M
MSolutions
b Automatic driving lights
inoperative *T
he light sensor is faulty. #
Consult a qualified specialist workshop.
b Switch on headlamps *Y
ou are driving without lo w-beam headlamps. #
Turn the light switch totheL orà position.
b
Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. #
Turn the light switch totheà position.
b Intelligent Light System
inoperative *T
he Intelligent Light Sy stem is faulty. The lighting sy stem continues tofunction properly without the functions of
th e Intelligent Light Sy stem. #
Consult a qualified specialist workshop. 606
Display messages and warning/indicator lamps
Page 612 of 673
Display messages
Possible causes/consequences and M
MSolutions #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean the windscreen. Wa
rning and indicator lamps Overview of indicator and
warning lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some indicator and
wa rning lamps may briefly light up or flash. This
behaviour is non-critical. These indicator and
wa rning lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y. Instrument display (standard) Wi
descreen co ckpit instrument displ ay Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown.
Indicator and warning lamps:
L Low beam (/
page141)
T St
anding lights (/ page141) Displ
aymessa ges and warning/indicator lamps 609
Page 613 of 673

K
High beam (/
page 143)
#! Tu
rn signal lights (/ page143)
R Re
ar fog light (/ page141)
6 Re
stra int sy stem (/ page610)
ü Seat belt not
fastened (/ page616)
J Brakes (yell
ow) (/ page 610)
J Brakes (red) (/
page610)
! Electric parking brake (yell
ow)
( / page 610)
! Electric parking brake (red)
(/
page 610) !
ABS malfunction (/
page610)
÷ ESP®
(/ page 610)
å ESP®
OFF (/ page 610)
L Distance warning (/ page617)
Ù Electric powerst eering malfunction
(/ page 622)
ä AIRBODY CONTROL malfunction
(/ page 617)
ä DYNA MIC BODY CONTROL malfunc‐
tion (/ page617)
; Engine diagnostics(/
page 618) %
Preglow
# Electrical
fault (/ page618)
8 Fu
elreser vewith fuel filler cap loca‐
tion indicator (/ page618)
? Coolan
tto o hot/cold (/ page618)
h Ty
re pressure monitor( /page 620)
ï Trailer hit chis not operational or is
swivelling (/ page 622)Saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
! ABS warning lamp The
yellow ABS warning lamp is lit while the engine is running.
*ABS is malfunctioning. If th ere is an additional warning tone, EBD is malfunctioning.
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. 61 0
Displaymessa ges and warning/indicator lamps
Page 614 of 673

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions &
WARNING Thereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning, the wheels could lock when braking
The steering capability and braking characteristics are thus se verely impaired. The braking dis tance may increase
in an emergency braking situation. In addition, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop.
÷ ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
*A t least one wheel and tyre assembly has reached its traction limit (/ page211). #
Adapt your driving style to suit thero ad and weather conditions.
÷ ESP ®
wa rning lamp lights
up The
yellow ESP ®
wa rning lamp is lit while the engine is running.
* ESP ®
is malfunctioning
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. Display messages and
warning/indicator lamps 611
Page 619 of 673

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop immediatel y.Seat belt
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
7 Seat belt warning lamp
lights up The
red seat belt warning lamp will light up once the engine has star ted.
In addition, a warning tone may sound.
*T he seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt (/ page 38).
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit.
7 Seat belt warning lamp
fl ashes The
red seat belt warning lamp flashes and an intermit tent wa rning tone sounds.
*T he driver or front passenger has not fastened their seat belt while theve hicle is in motion. #
Fasten your seat belt(/ page 38).
*T here are objects on the front passenger seat. #
Remo vethe objects from the front passenger seat. 61 6
Displaymessa ges and warning/indicator lamps
Page 620 of 673
Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function The
red dis tancewarning lamp lights up while theve hicle is in motion.
*T he dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Fu nction of Active Brake Assi st (/ page 216).
ä Suspension warning lamp The
yellow AIR BODY CONTROL warning lamp is on.
The yellow DYNA MIC BODY CONTROL warning lamp is on.
*T here is a fault in the AIR BODY CONTROL.
There is a fault in theDY NA MIC BODY CONTROL. #
Notethe messages on the multifunction displa y. Displ
aymessa ges and warning/indicator lamps 617
Page 623 of 673

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (/ page 481). #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C. Ty
res Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp lights
up The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
*The tyre pressure monitoring sy stem has de tected tyre pressure loss in at least one of the tyres. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired. 620
Display messages and warning/indicator lamps
Page 628 of 673

Ac
tive headlamps .................................... 14 4
Ac tive Lane Change Assi st..................... 236
Ac tivating/deactivating ...................... .238
Fu nction .............................................. 236
Ac tive Lane Keeping Assist .................... 273
Ac tivating/deactivating ...................... .275
Ac tivating/deactivating thewa rning .... 275
Fu nction .............................................. 273
Setting the sensitivity .......................... 275
Sy stem limits ....................................... 273
Tr ailer operation .................................. 273
Ac tive Parking Assist .............................. 260
Cross Traf fic Alert ............................... 265
Drive AwayAssi st................................ 264
Exiting a pa rking space ...................... .263
Fu nction .............................................. 260
Manoeuvring assi stance ...................... 266
Pa rking ................................................ 261
Sy stem limitations ...............................2 60
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st....................... 232
Display ................................................ 232
Fu nction .............................................. 232 Ac
tive Steering Assist ............................ .234
Ac tivating/deactivating ...................... .236
Ac tive Emergency Stop Assist .............2 38
Ac tive Lane Change Assi st.................. 236
Displa ysinthe instrument display .......2 38
Fu nction .............................................. 234
Sy stem limitations ...............................2 34
Ad aptive brake lights .............................. 222
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist
Fu nction .............................................. 14 6
Switching on/off ................................. 147
Ad aptive Highbeam Assist Plus
Fu nction ............................................... 147
Switching on/off ................................. 14 9
Ad Blue ®
.................................................... 544
Ad ditives .............................................5 44
Capacity .............................................. 545
Fill le vel .............................................. .288
No tes ................................................... 197
Purity ................................................... 544Ra
nge ................................................. .288
To pping up ...........................................1 97
Ad ditional door lo ck.................................. 78
Ad ditional value range
Setting display content ........................ 287
Ad diti ves.................................................. 545
Ad Blue ®
............................................... 544
Engine oil ............................................. 545
Fu el ..................................................... 543
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing the balance/ fader
Adva nced sound sy stem ......................4 73
Burmes ter®
sur round sound sy stem ....4 72
Ad justing the sound focus
Burmes ter®
sur round sound sy stem ....4 72 Index
625