
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ty res with insuf ficient tyre pressure ma y,forex ample, af fect theve hicle's handling characteristics, steering and
braking. ‑ #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. #
Consult a qualified specialist workshop. Ve
hicle 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 wer-assis tedsteering 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 on the multifunction displa y. Displ
aymessa ges and warning/indicator lamps 543

Ad
justing the sound optimisation
Burmes ter®
high-end 3D sur round
sound sy stem ...................................... 399
Ad justing treble, mid- range and bass
settings
Burmes ter®
high-end 3D sur round
sound sy stem ...................................... 399
Burmes ter®
sur round sound sy stem ... 398
ADS PLUS damping sy stem
see AIR BODY CONTROL
Ad versewe ather light ............................ .133
Af ter-sales service centre
see ASS YST PLUS
AIR BODY CONT ROL................................ .218
Setting ................................................. 220
Suspension .......................................... 218
Air conditioning sy stem
see Climate control
Air distribution Setting ................................................ .145
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 ................................................... 15 5
Ad justing (front) .................................. 15 5
Ad justing (rear) .................................... 15 5
Ad justing the AIRSCARF vents ............. 15 6
Glo vebox .............................................1 56
Air vents
see Air vents
Ai r-re circulation mode ............................ 14 8
Air-water duct .......................................... 408
Ke eping free ........................................4 08
Airbag ........................................................ .38
Ac tivation .............................................. 31
Fr ont airbag (driver, front passenger) ....38
Ins tallation locations ............................ .38
Knee airbag ........................................... 38
Overview ............................................... 38
PA SSENGER AIR BAG indicator lamp .... .42Pr
otection ..............................................38
Re duced pr otection ...............................40
Side impact airbag ................................ 38
Wi ndow airbag ....................................... 38
Ai rflow
Setting ................................................ .145
AIRSCARF Adjusting the outlets ........................... 15 6
Switching on/off ................................. 108
Alarm see Panic alarm
Alarm sy stem
see ATA (anti-theft alarm sy stem)
All-wheel drive see 4MATIC
Alternative route
see Route
Ambient lighting Setting (multimedia sy stem) ................1 35
Android Auto ............................................ 356
Connecting a mobile phone ................. 356
Ending ................................................. 357
Information .......................................... 356 Index
547

Ad
aptive Highbeam Assist Plus inop‐
erative ................................................ .530
¯ AdBlue sy stem fault Engine
st art not possible ................................ .512
¯ AdBlue sy stem fault Perf.
re duced in XXX km See Owner's
Manual .................................................5 11
¯ AdBlue sy stem fault Perf.
re duced: XXX mph No start in XXX
miles .................................................... 511
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... 511
4 Add 1 litre engine oil when next
re fuelling ............................................. 509
Air conditioning Malfunction See
Owner's Manual .................................. 526
Apply brake todeselect Park (P)
position ................................................ 513
App lybrake toselect R ........................ 514
À ATTENTION ASSIST inoperative ... 498ÀAT
TENTION ASSIS T:Take a
break! .................................................. 495
bAu tomatic driving lights inoper‐
ative .................................................... 529
Au xilia rybattery malfunction ...............514
Beginning eme rgency stop .................. 490
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 501
Blind Spot Assist inope rative ............... 494
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...4 97
Cann otstart engine See Owner's
Manual ................................................ 505
ÁChan gekey bat teries .................. 520
JCheck brake fluid le vel................ 483
Check brake pads See Owner's Man‐
ual ...................................................... .493
4Che ckeng. oil le v.when next
re fuelling .............................................. 51 0ï
Check trailer hit chlock (white
display message) ................................ .525
Che cktyre pressu resth en restart
Ru n Flat Indicator ................................. 519
h Check tyre(s) .............................. .516
! Clean the fuel filter .................... .503
?Coolant Stop vehicle Switch
engine off ............................................ 505
Cruise contro l and Limiter inope ra‐
tive ...................................................... 500
Cruise control inope rative ................... 500
Cruise control off ................................ 500
!cu rrently unavailable See Own‐
er's Manual ........................................ .485
÷cur rently una vailable See Own‐
er's Manual .......................................... 479
5 Engine oil le vel cannot be
measured ............................................ 507
4Engine oil le velRe duce oil le vel...5 08 556
Index

4Engine oil le
velSt op vehicle
Switch engine off ................................ 508
4Engine oil pressure Stop Switch
off engine ............................................ 509
6Example: Left windowbag mal‐
function Consult workshop ................. 487
Fa ult Drive at max. 80 km/h ...............497
6 Front left malfunction Consult
wo rkshop (Example) ............................4 91
_ Front left seat backrest not
loc ked (Example) .................................5 22
Fr ont-passenger airbag disabled See
Owner's Manual ..................................4 89
Fr ont-passenger airbag enabled See
Owner's Manual ..................................4 88
b Hazard warning lamps mal‐
functioning .......................................... 529
&inoperative Bat tery low .............. .527
& inope rative Refuel vehicle ........... 527
&inoperative See Owner's Man. ....527 !
inope rative See Owner's Man‐
ual ....................................................... 486
÷inoperati veSee Owner's Man‐
ual ....................................................... 486
Tinoperati veSee Owner's Man‐
ual ....................................................... 483
GInoperati ve.................................. 490
bIntelli gent Light Sy stem inoper‐
ative ....................................................5 28
ÁKe y not de tected (red displ ay
messa ge).............................................5 19
Á Key not de tected (white dis‐
pl ay messa ge).....................................5 20
bLeft dipped beam (Example) ....... 528
6Left wind owbag malfunction
Consult workshop (Example) ............... 487
Let fresh air into theve hicle interior!
Air conditioning malf. Visit workshop .. 526
Limiter inoperative .............................. 500
Limiter passive .................................... 501 ¢
Lowe ring .................................... 498
bMalfunction See Owner's Man‐
ual ....................................................... 529
ðMaximum speed exceeded ..........5 01
Mercedes me connect Services limi‐
te d See Owner's Manual .....................490
Mo tor can be star ted again .................5 05
N permanently active Risk of vehicle
ro lling .................................................. .513
ç Off............................................... 499
ëOff ............................................... 496
Only select Park (P) when vehicle is
st ationary ............................................ .514
ï Operation only possible in
transmission position N ....................... 522
ïOperation only possible in
transmission position P ....................... 522
!Pa rking brake See Owner's
Manual ................................................ 480 Index
557