
%
Preglow
h Ty
re pressure monitoring sy stem
(→ page 454) j
Tr
ailer hit chis not operational or is
swivelling (→ page449) Sa
fet y sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
J Brake sy stem warning lamp
(yellow) The
yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and continue todrive carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, please obse rveth is. #
Consult a qualified specialist workshop. 440
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
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. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop.
! ABS warning lamp The
yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If th ere is an additional acoustic warning signal, EBD is malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be faulty. &
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 in the multifunction displa y. #
Consult a qualified specialist workshop. 442
Displaymessa ges and warning/indicator lamps

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 terth e engine is star ted.
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, the seat belt warning lamp may remain lit. 446
Displaymessa ges and warning/indicator lamps

Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
; Engine diagnosis warning
lamp The
yellow engine diagno stics 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 emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a qualified specialist workshop.
Ve hicles with a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagno stics 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 supply has dropped into there ser verange. #
Refuel. Displ
aymessa ges and warning/indicator lamps 451

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. Displ
aymessa ges and warning/indicator lamps 453

Ad
aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........438
Ad aptive Highbeam Assist inopera‐
tive ...................................................... 437
Ad aptive Highbeam Assist Plus Cam‐
era view restricted See Owner's
Manual ................................................ 437
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .437
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .436
4 Add 1 litre engine oil when
next refuelling ...................................... 413
Air conditioning Malfunction See
Owner's Manual .................................. 428
App lybrake todeselect Park (P)
position ...............................................4 25
Apply brake toselect R ....................... 429 À
ATTENTION ASSIST
inoperative .......................................... 399
À ATTENTION ASSIS T:Take a
break! .................................................. 399
b AUTO lights inope rative .............. 436
Au xilia rybattery malfunction ...............427
_ Before starting the engine, turn
th esteering wheel. .............................. 429
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 402
Blind Spot Assist inope rative ............... 403
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...4 03
Brake immediate ly............................... 391
 Change key bat teries ................. 422
Ø Check AdBlue See Owne r’s
Manual .................................................4 16
J Check brake fluid le vel.............. .391
4 Check eng. oil le v.when next
re fuelling .............................................. 411j
Check trailer hit chlock .............. 424
h Check tyre(s) .............................. 41 8
! Clean the fuel filter .................... .414
Clutch overheated Avoid pulling away
fo r XX:XX mins ................................... .428
? Coolant Stop vehicle Switch
engine off ............................................ 407
Cruise contro l and Limiter inope ra‐
tive ...................................................... 406
Cruise control inope rative ................... 405
Cruise control off ................................ 405
! currently una vailable See Own‐
er's Manual ........................................ .383
÷ currently una vailable See Own‐
er's Manual ........................................ .384
Dep ress clutch fully tostart engine .....4 28
È .................................................... 406
Ø Eng.start not possible in XXX
km ...................................................... .416
Ø Eng.start not possible ................416 Index
465

Ø
Refill Ad Blue Eng. start not
possible .............................................. .415
Ø Refill Ad Blue No start in XXX
km ...................................................... .415
Ø Refill Ad Blue See Owne r’s
Manual .................................................4 15
! Release parking brake ................ 387
¸ Replace air cleaner .....................414
, Replace key See Owner's Man‐
ual ...................................................... .421
 Replace key ................................ 421
8 Reser vefuel le vel........................ 414
6 Restra int sys. malfunction Con‐
sult workshop ...................................... 395
Re versing not poss. Consult work‐
shop ....................................................4 27
Risk of vehicle rolling Driver door
open and transmission not in P ...........425
# See Owner's Manual .................. 408
Speed limit (winter tyres) XXX km/h ... 406#St
art engine See Owner's Man‐
ual ...................................................... .408
Ð Steering malfunction Drive
carefully Visit workshop ....................... 431
Ð Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual .... 432
Ð Steering malfunction See Own‐
er's Manual ......................................... 430
Ð Steering malfunction Stop
immediately See Owner's Manual ........ 431
St op vehicle Lea veengine running
Wa itTransmission cooling ...................427
# Stop vehicle Lea veengine run‐
ning ...................................................... 411
# Stop vehicle See Owner's Man‐
ual .......................................................4 09
É Stop vehicle Vehicle too low .......4 00
b Switch off lights ......................... 436
b Switch on headla mps................. 436 To
shift out of P or N,depress brake
and start engine .................................. 425
To p up coolant See Owner ’sManual ... 407
¥ Top up washer fluid .................... 434
j Trailer coupling extending… ........ 423
Tr ansmission Malfunction Stop ........... 427
! Turn on the ignition torelease
th e parking brake ................................ 386
Ty re press. monitor cur rently una vail‐
able ...................................................... 419
Ty re press. monitor inoperative ...........420
Ty re press. monitor inoperative No
wheel sensors .................................... .420
Ty re pressure Check tyres ....................417
Ty re(s) ove rheated ...............................4 20
Ty re(s) ove rheated Reduce speed ........ 421
d Vehicle is operational Switch
off the ignition before exiting .............. 426
É Vehicle rising Please wait.......... .400
É Vehicle rising .............................. 399 Index
467

Emer
gency spare wheel .........................3 62
No tes .................................................. 362
Re moving ............................................ 363
Energ y consum ption
Ke y ........................................................ 68
Engine ECO start/ stop function ......................1 66
Engine number ................................... .366
St arting (Digital Car Keyst icke r) .......... 161
St arting (eme rgency operation
mode) .................................................. 16 2
St arting (mobile phone) ...................... .161
St arting (Remo teOnline) ..................... 16 3
St arting (s tart/s top button) .................1 60
St arting assis tance .............................. 332
Switching off (s tart/s top button) .........1 81
Engine bonnet Function (active bonnet) ...................... 307
Opening/closing ................................. 308
Re setting (active bonnet) ..................... 307
Engine electronics Notes ................................................... 364
Engine number ........................................3 66Engine oil
................................................. .311
Ad ditives .............................................. 373
Checking the oil le vel using the oil
dipstick ................................................ 310
Checking the oil le vel using the on-
board computer ................................... 310
Filling capacity ..................................... 374
MB-F reigabe or MB-Appr oval .............. .374
Quality ................................................. 374
To pping up ...........................................3 11
Entering characters
Fu nction/no tes .................................... 271
On theto uchpad .................................. 272
Using the controller ............................. 272
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assist ................................. 19 5
Tr ailer stabilisation .............................. 19 5
ESP ®
(Electronic Stability Prog ram) ...... 19 2
Fu nction/no tes ................................... 19 2
Switching on/off ................................. 19 5
EU general operating permit number ....366 Exhaust pipes (Care)
...............................317
Exterior lighting Care .................................................... .317
Exterior lighting see Lights F
Fa tigue de tection
see ATTENTION ASSIST
Fa ult message
see Displ aymessa ge
Favo urites
Ad ding .................................................2 70
Calling up ............................................ 269
Deleting ............................................... 270
Moving ................................................ 270
Overview ............................................. 269
Re naming ............................................ 270
Fi re extinguisher ..................................... 324
Firs t-aid kit (soft sided) .......................... 323
Flacon Inse rting/ removing .............................. 15147 0
Index