Page 424 of 489

Display messages
Possible causes/consequences and M
MSolutions
T
!
÷ inoperative See Owner's
Manual *
EBD, ABS and ESP ®
are malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. &
WARNING Risk of skidding if EBD, ABS and ESP ®
are malfunctioning
The wheels may block du ring braking and ESP ®
does not pe rform any vehicle stabilization.
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, 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. Active Brake Assist Func-
tions currently limited See
Owner's Manual *
Ve hicles with the Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE ®
PLUS are temp orarily una vailable or only partially available.
Ve hicles without the Driving Assistance Package: Active Brake Assi stistemp orarily una vailable. #
Drive on.
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again. #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine. Display messages and
warning/indicator lamps 421
Page 430 of 489

Display messages
Possible causes/consequences and M
MSolutions
h Check tyre(s) *T
he tyre pressure in one or more tyres has dropped significantl y.The wheel position will be displa yed. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
R The tyres can bu rst.
R The tyres can wearexc essively and/or une venly.
R The driving characteristics as well as thesteering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyre pressure (/ page 346) andthe tyres.
h
Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the dif fere nce in tyre pressure between the individual
wheels is too great. #
Check the tyre pressure and add air, if necessar y. #
When the tyre pressure is cor rect, restart the tyre pressure monitor (/ page 349). Display messages and
warning/indicator lamps 427
Page 431 of 489
Display messages
Possible causes/consequences and M
MSolutions
h Warning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenly. The wheel position will be displa yed. &
WARNING Risk of an accident from driving wi thaflat tyre
R The tyres can overheat and cause a fire.
R The driving characteristics as well as thesteering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Do not drive on with a flat tyre. #
Obse rveth e no tes on flat tyres. No
tes on flat tyres (/ page 325). #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyres.
Tyre(s) overheated *A
t least one tyre is overheating. The af fected tyres are displ ayed in red. At temp eratures close tothe limit value,
th e tyres are displa yed in yello w. &
WARNING Risk of an accident from driving wi thove rheated tyres
Overheated tyres can bur st. #
Reduce speed so that the tyres cool down. 428
Display messages and warning/indicator lamps
Page 443 of 489

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
If th e trailer hitch is swivelling: #
Wait until the ball neck has reached the operational position.
Ù
Po we rst eering warning
lamp (red) The
red po werst eering sy stem warning lamp is lit while the engine is running.
*The po wer assi stance or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances. #
Consult a qualified specialist workshop. #
Notethe messages on the multifunction displa y.Engine
Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
ÿ Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
*Possible causes: R The temp erature sensor is malfunctioning 440
Displaymessa ges and warning/indicator lamps
Page 444 of 489

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. Do not continue
driving. #
Notethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop.
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (/ page 314). Displ
aymessa ges and warning/indicator lamps 441
Page 448 of 489

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Stop in a safe location immediately. Do not continue driving! #
Consult a qualified specialist workshop. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. 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. Display messa
ges and warning/indicator lamps 445
Page 450 of 489

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, 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. ÷
ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
*O ne or more wheels has reached its grip limit (/ page196). #
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 driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. Display messages and
warning/indicator lamps 447
Page 455 of 489

Ac
tive Speed Limit Assi st....................... 213
Displ ay................................................. 213
Fu nction ............................................... 213
Ac tive Steering Assist ............................ .215
Ac tivating/deactivating ...................... .217
Ac tive Emergency Stop Assist .............. 217
Fu nction ............................................... 215
Sy stem limits ....................................... 215
Ac tive Traf fic Jam Assist
Ac tivating/deactivating ...................... .218
Fu nction ............................................... 218
Ad aptive brake lights .............................. 203
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive Highbeam Assist
Fu nction .............................................. 13 8
Switching on/off ................................. 13 9
Ad aptive Highbeam Assist Plus
Fu nction .............................................. 13 9
Switching on/off .................................. 141
Ad Blue ®
.................................................... 370
Ad ditives .............................................3 70
Capacity .............................................. 370No
tes ................................................... 184
Purity ................................................... 370
To pping up ...........................................1 84
Ad ditional door lo ck.................................. 74
Ad diti ves.................................................. 371
Ad Blue ®
............................................... 370
Engine oil ............................................. 371
Fu el ..................................................... 368
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
ADS PLUS damping sy stem
see AIR BODY CONTROL
Ad versewe ather light ............................ .138
Af ter-sales service centre
see ASS YST PLUS
AIR BODY CONT ROL................................ 220
Setting ................................................ .221
Suspension .......................................... 220 Air conditioning menu
Calling up ............................................ 15 2
Air distribution Setting ................................................ .151
Setting (MBUX multimedia sy stem) ..... 15 3
Air freshener sy stem
see Frag rance sy stem
Air inlet see Air-water duct
Air pressure see Tyre pressure
Air suspension see AIR BODY CONTROL
Air vents ................................................... 16 0
Ad justing (front) .................................. 16 0
Ad justing (rear) .................................... 161
Glo vebox .............................................1 61
Air vents
see Air vents
Ai r-conditioning sy stem
see Climate control
Air-recirculation mode ............................154452
Index