Page 488 of 541
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
÷ ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
ESP ®
is inter vening . #
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 and driving sa fety sy stems may also be faulty. &
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. #
Drive on carefully. #
Obser vethe messages in the multifunction displa y. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 485
Page 489 of 541
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
å ESP ®
OFF warning lamp The
yellow ESP ®
OFF warning lamp is lit while the engine is running.
ESP ®
is deacti vated. &
WARNING Risk of skidding when driving wi thESP ®
deacti vated
If ESP ®
is deactivated, ESP ®
cannot car ryout vehicle stabilisation. The availability of fur ther driving saf ety sy stems
is also limited. #
Drive on carefull y. #
Only deactivate ESP ®
for as long as the situation requ ires.
If ESP ®
cannot be activated, ESP ®
is malfunctioning. #
Have ESP ®
ch ecked immediately at a qualified specialist workshop. #
Obser vethe no tes on deactivating ESP ®
. 486
Display messages and warning/indicator lamps
Page 491 of 541

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
6 Re stra int sy stem warning
lamp The
redre stra int sy stem warning lamp is lit while the engine is running.
The restra int sy stem is malfunctioning. &
WARNING Risk of inju ryor fata l injury due toa malfunction in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or might not
be triggered at all in theeve nt of an accident. This may af fect the seat belt tensioner or airbag, forex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages in 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 lights up af terst arting the engine.
In addition, an acoustic warning tone may sound.
The seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt .
If yo u ha veplaced objects on the front passenger seat, thewa rning lamp may remain lit. 488
Display messa ges and warning/indicator lamps
Page 494 of 541
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ð Po we rst eering sy stem
wa rning lamp The
red po werst eering sy stem warning lamp is lit while the engine is running.
The po werst eering assis tance 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. #
Obser vethe messages in the multifunction displa y. Displ
aymessa ges and warning/indicator lamps 491
Page 495 of 541

Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
; Engine diagnosis warning
lamp The
yellow engine diagnosis warning lamp is lit while the engine is running.
A malfunction has occu rred in the engine, theex haust sy stem or the fuel sy stem.
The emission limit values may be exceeded and the engine may be running in emergency operation mode. #
Have theve hicle checked as soon as possible at a qualified specialist workshop.
Ve hicles with a diesel engine: the fuel tank has been run dr y. #
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency operation mode is cancelled. The vehicle need not
be checked.
# Elect rical fault warning
lamp The
red elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Obser vethe messages in the multifunction displa y.
8
Fu elreser vewarning lamp The
yellow fuel reser ve wa rning lamp is lit while the engine is running.
The fuel le vel has dropped into there ser verange. #
Refuel. 492
Displaymessa ges and warning/indicator lamps
Page 496 of 541

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
? Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
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, paying attention toroad and traf fic conditions, and switch off the engine. Do not con‐
tinue driving under any circums tances. #
Obser vethe messages in 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. Display messages and
warning/indicator lamps 493
Page 497 of 541
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Otherwise: #
Lea vetheve hicle and keep a safe dis tance from theve hicle until the engine has cooled down. #
Check the coolant le vel . #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive on tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C. 494
Displaymessa ges and warning/indicator lamps
Page 500 of 541

1,
2, 3 ...
12 V so cket
see Soc ket (12 V)
230 V so cket
see Soc ket (230 V)
360° Camera ........................................... 204
Assigning as a favo urite ...................... .207
Care .................................................... 363
Fu nction .............................................. 204
Selecting a view .................................. 206 A
A/C function Activating/deactivating (control
panel) .................................................. 13 0
Ac tivating/deactivating (multimedia
sy stem) ................................................ 13 0
ABS (Anti-lock Braking Sy stem) ............ .170
Ac celeration
see Kickdown
Ac cess data
Editing ................................................ .322
Setting ................................................. 320 Ac
oustic locking verification signal
Swit ching on/off .................................. .59
Ac tive Blind Spot Assi st......................... 222
Ac tivating/deactivating ...................... .224
Brake application ................................. 222
Fu nction/no tes ................................... 222
Sy stem limits ....................................... 222
Tr ailer operation .................................. 222
Ac tive bonn et(pedestrian pr otection) .. 353
Operation ............................................ 353
Re setting ............................................. 353
Ac tive Brake Assi st.................................. 175
Fu nction/no tes .................................... 175
Setting ................................................. 17 9
Ac tive Eme rgency Stop Assist ...............192
Ac tive Lane Change Assi st...................... 191
Ac tive Lane Keeping Assist .................... 224
Ac tivating/deactivating ...................... .226
Fu nction .............................................. 224
Sensitivity (function/no tes) ................. 227
Setting the sensitivity .......................... 227
Sy stem limits ....................................... 224
Tr ailer operation .................................. 224 Ac
tive light function ................................ 11 7
Ad aptive brake lights ..............................180
Ad aptive cruise control
see Dis tance Pilot DISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist Plus
Ac tivating/deactivating ...................... .120
Fu nction ............................................... 11 9
Ad Blue ®
.................................................... 41 5
Ad ditives .............................................. 41 5
Filling capacity ..................................... 416
No tes ................................................... 157
Purity ................................................... 41 5
Ad ditional door lo ck.................................. 62
Ad diti ves................................................... 416
Ad Blue ®
............................................... 41 5
Engine oil ............................................. 416
Fu el ...................................................... 414
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel Index
497