Page 504 of 557

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. Display messa
ges and warning/indicator lamps 501
Page 508 of 557

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. Displ
aymessa ges and warning/indicator lamps 505
Page 510 of 557
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 507
Page 522 of 557

Ac
tive Lane Keeping Assist Camera
view restricted See Owner's Manual ... 458
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........457
Ac tive Lane Keeping Assist inopera‐
tive ...................................................... 457
bAc tive Light Sy stem inoperative .. 491
Ad aptive Highbeam Assist Plus Cam‐
era view restricted See Owner's
Manual ................................................ 493
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .493
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .492
4Ad d 1 litre engine oil when next
re fuelling ............................................. 469
Air conditioning Malfunction See
Owner's Manual .................................. 485 Apply brake
todeselect Park (P)
position ...............................................4 81
À ATTENTION ASSIST inoperative ... 454
ÀAT TENTION ASSIS T:Take a
break! .................................................. 454
bAU TOlights inope rative ............... 492
Au xilia rybattery malfunction .............. 484
_Before starting the engine, turn
th esteering wheel. .............................. 485
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 459
Blind Spot Assist inope rative ............... 459
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...4 62
Brake immediate ly............................... 447
 Changekey bat teries ...................4 78
Ø Check AdBlue See Owne r’s
Manual ................................................ 470
J Check brake fluid le vel................ 4474
Check eng. oil le v.when next
re fuelling ............................................. 467
jChe cktrailer hitch lo ck............... 481
hCheck tyre(s) ............................... 474
! Clean the fuel filter ...................... 472
Clutch overheated Avoid pulling away
fo r XX:XX mins ................................... .484
É Compressor is cooling .................457
? Coolant Stop vehicle Switch
engine off ............................................ 465
Cruise contro l and Limiter inope ra‐
tive ....................................................... 461
Cruise control inope rative ................... 463
Cruise control off ................................. 461
!cu rrently unavailable See Own‐
er's Manual ........................................ .438
÷cur rently una vailable See Own‐
er's Manual ........................................ .440
Depress clutch ful lyto start engine .....4 84
Dis tance Pilot available again .............. 460 Index
519
Page 528 of 557

Engine number
........................................ 423
Engine oil ................................................ .368
Ad ditives .............................................4 30
Che cking the oil le vel using the oil
dipstick ................................................ 367
Checking the oil le vel using the on-
board computer ................................... 367
Filling capacity .....................................4 31
MB-F reigabe or MB-Appr oval .............. .431
To pping up ...........................................3 68
Entering characters
Fu nction/no tes .................................... 274
On theto uchpad .................................. 275
Using the controller ............................. 275
ERA-GLONASS test mode
St arting/ending .................................. 322
ESC (Elect ronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
(Electronic Stability Prog ram) ....... 181
Crosswind Assist ................................ .184
Fu nction/no tes .................................... 181
Switching on/off ................................. 184
Tr ailer stabilisation .............................. 184
EU type appr oval number ....................... 423 Exterior lighting
Care ..................................................... 374
Exterior lighting see Lights F
Fa tigue warning
see ATTENTION ASSIST
Fa ult message
see Displ aymessa ge
Favo urites
Ad ding .................................................2 72
Calling up ............................................ 272
Del eting .............................................. .273
Moving .................................................2 73
Overview ............................................. 272
Re naming ............................................ 273
Fi lling station sear ch
St arting an automatic filling station
sear ch................................................. 290
Switching the automatic filling sta‐
tion sear chon/off ...............................2 93
Fire extinguisher ..................................... 381 Fi
rs t-aid kit (soft sided) .......................... 380
Flacon Inse rting/ removing ............................. 14 5
Flat ty re
MOExtended tyres ...............................3 81
No tes ................................................... 381
TIREFIT kit ...........................................3 83
Wheel change ...................................... 414
Flat ty re
see Breakdown
Floor mat .................................................. 12 2
Fo g light (extended range) ......................1 27
Fr ag rance
see Frag rance sy stem
Fr ag rance sy stem .................................... 14 5
Inserting/removing theflacon ............ .145
Setting ................................................. 14 5
Fr equencies
Mobile phone ...................................... 422
Tw o-w ayradio ...................................... 422
Fr equency band
Selecting (on-board computer) ............ 252 Index
525