airbag MERCEDES-BENZ S-CLASS SALOON LONG 2021 Service Manual

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Make sure that no objects are trapped under the front passenger seat. #
Check the status of automatic front passenger airbag actuation (/ page 58).#
If necessar y,consult a quali/ed specialist workshop immediatel y.
Front passenger airbag ena-
bled See Owner's Manual *T
he front passen ger airbag will be enabled while theve hicle is in motion in thefo llowing situations:
R even when a child, a small adult or an object weighing less than the system weight thre shold is located on the front
passenger seat
R even when the front passenger seat is not occupied
The system may de tect objects or forc es that are adding tothewe ight applied tothe seat. &
W WARNING
ARNING Risk of injury or death when using a child restraint system while the front passenger airbag is ena-
bled
If yo u secure a child in a child restraint system on the front passenger seat and the front passenger airbag is ena-
bled, the front passenger airbag can deploy in theev ent of an accident.
The child could be struck bythe airbag. #
Ensure, bo thbefore and during the journe y,that the status of the front passenger airbag is cor rect.
NEVER use a rear wa rdfacing child restraint on a seat pro tected byan ACTIVE AIRBAG in front of it, DEATH or
SERIOUS INJURY tothe CHILD can occur. Display messages and
warning/indicator lamps
499
499

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Make sure that no objects are trapped under the front passenger seat. #
Check the status of automatic front passenger airbag actuation (/ page 58).#
If necessar y,consult a quali/ed specialist workshop immediatel y.
PRE-SAFE inoperative See
Owner's Manual *
The PRE‑SAFE ®
functions are malfunctioning. #
Consult a quali/ed speciali stwo rkshop.
PRE-SAFE impulse side
inoperative See Owner's
Manual *
The PRE‑SAFE ®
Impulse Side system is malfunctioning or inoperative aTer having already been triggered. #
Consult a quali/ed specialist workshop. K K
e
ey
y Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
Á
Replace key *H
aveth eke yre placed. #
Consult a quali/ed specialist workshop. 500
500
Displ
aymessages and warning/indicator lamps

A
A
ctiv
ctiv e Lane K
e Lane K eeping Assist
eeping Assist
Ac tivating/deactivating.......................... 304
Ac tivating/deactivating thewa rning....... 304
Fu nction................................................ 302
Setting the sensitivity.............................3 04
System limits......................................... 302
Tr ailer operatio n..................................... 302
A A ctiv
ctiv e P
e Par
arking Assist
king Assist
Au tomatic braking function................... .326
Cross tra1c warning.............................. 331
Drive Away Assist................................... 330
Exiting a parking space.......................... 325
Fu nction................................................ 321
Manoeuvring brake function................... 332
Pa rking.................................................. 323
Pa using.................................................. 326
System limitations..................................3 21
A A ctiv
ctiv e Speed Limit Assist
e Speed Limit Assist , Driving system
Display................................................... 281
Fu nction................................................ 281
A A ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 286
Ac tive Emer gency Stop Assist................ 286
Ac tive Lane Change Assist..................... 288
Fu nction................................................ 284 System limits......................................... 284
A
A ctiv
ctiv e
eTr
Tra1c
a1c Jam Assist
Jam Assist
Fu nction................................................ 284
A
A dap
dap tiv
tive br
e br ak
ake lights
e lights .................................... 273
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus, High
beam Function................................................ 176
Switching on/o..................................... 177
A
A dBlue
dBlue ®
®
,Ad ditives (AdBlue ®
), BlueTEC,
DeNOx agent, Reducing agent
Ad ditives................................................ 486
Capacity................................................ 487
No tes..................................................... 239
Purit y.....................................................4 86
To pping up............................................ .239
A A dditional door lock
dditional door lock.......................................92
A
A dditiv
dditiv es
es
Ad Blue ®
................................................ .486
Engine oil............................................... 487
Fu el....................................................... 484
Air conditioning menu Air conditioning menu Calling up..............................................1 91Air dis
Air distr
tribution
ibution
Setting (MBUX multimedia system)......... 192
Setting (THERMOTRONIC)......................1 89
Air v Air v ents
ents, Air vents, Vents
Ad justing (front).................................... .205
Ad justing (rear)...................................... 206
Glo vebox.............................................. .207
Air
Air -r
-recir
ecir culation mode (wit
culation mode (wit h
h/ne
/ne par
particle
ticle
pr
pr e/lt
e/lt er)
er)....................................................... 193
Air
Air -w
-wat
ater duct
er duct, Air inlet, Waterta nk
Ke eping free.......................................... 429
Airbag
Airbag, Occupant saf ety
Ac tivation................................................ 46
Belt airbag............................................... 50
Centre airbag (driver, front passenger)...... 53
Cushionbag.............................................. 53
Fr ont airbag (driver, front passenger)........ 53
Installation locations................................ 53
Knee airbag............................................. 53
Overview.................................................. 53
PA SSENGER AIR BAG indicator la mps...... 58
Pr otection................................................ 54
Re ar airbag............................................. .53
REAR SEAT AIR BAG indicator lamps........ 62 592 592
Index

Re
duced pr otection.................................. 56
Side airbag.............................................. 53
Wi ndow airbag......................................... 53
Air0 ow
Air0ow
Setting (THERMOTRONIC )...................... 189
AIRMA AIRMA TIC
TIC
Setting................................................... 305
Suspension............................................ 305
Ambient lighting Ambient lighting Setting (MBUX multimedia system)......... 179
Animals
Animals Pets in theve hicle.................................... 86
Anti-t
Anti-theT heTprot
pr otection
ection
Ad ditional door loc k................................. 92
Immobiliser............................................ 115
ASS YS
ASS YST PL
T PL US
US
Battery disconnection periods................ 424
Displaying the service due dat e.............. 423
Fu nction/no tes...................................... 423
Re gular maintenance work..................... 423
Special service requ irements................. 423
AT ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alar m........................... 115
Fu nction................................................ 115 Interior pr
otection function.....................1 16
Priming/deactivating interior pr otec-
tion........................................................ 117
Priming/deactivating tow- awa y pro-
te ction................................................... 116
To w- awa y protection function................. 116
A A TTENTION ASSIST
TTENTION ASSIST, De tecting inat tentive-
ness Setting.................................................. .275
A
A TTENTION ASSIS
TTENTION ASSIS T wit
T with micr
h micr osleep
osleep
det
det ection
ection, Attention assis tant, Co.ee cup
symbol, Driving system, Dr owsiness
de tection, Fatigue de tection, Nodding o.
Fu nction................................................ 274
System limits......................................... 274
A
A ugment
ugment ed r
ed reality
eality
Fu nction on the head-up displa y............. 349
A
A ut
ut omatic co-dr
omatic co-dr iv
iver airbag
er airbag shut
shuto.
o., Co-
driver airbag shuto ., Occupant safety
Fu nction of co-driver airbag shuto........... 57
A
A ut
ut omatic dr
omatic dr iving lights
iving lights, Headlamps............. 170
A
A ut
ut omatic fr
omatic fr ont passeng
ont passeng er airbag
er airbagshut
shuto.
o.,
PA SSENGER AIR BAG status display
PA SSENGER AIR BAG indicator lamp s...... 58A
A
ut
ut omatic lat
omatic lat er
eral suppor
al suppor t adjus
t adjustmenttment
Setting................................................... 136
A
A ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident ,
Occupant saf ety............................................. 64
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function
Ac tivating/deactivating.......................... 187
A
A ut
ut omatic seat adjus
omatic seat adjustment tment
Setting................................................... 135
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 231
Drive prog rams...................................... 227
DY NAMIC SELECT button...................... .227
Engaging drive position.......................... 233
Engaging reve rsege ar............................ 232
Kickdown............................................... 234
Manual gear changing........................... .233
Oil temp erature (driver displa y,Spo rt
menu).................................................... 347
Selecting park position........................... 232
St eering wheel gearshiT paddles............ 233
Tr ansmission position displ ay................. 231
Tr ansmission position s........................... 231
Axle load Axle load Perm issible............................................ 480 Index
593
593

Tr
ailer operatio n..................................... 494 B
B
Bad w
Bad w eat
eather light
her light ......................................... 174
Bag hook
Bag hook..................................................... 155
Ball neck Ball neck Extending/r etra cting............................. .337
Extending/r etra cting (MBUX multime-
dia system)............................................ 339
B
B AS (Br
AS (Br ak
ake Assis
e Assis t Syst
t System)
em), Brake Assist
System, Braking assistance, Emer gency
braking........................................................ 269
Batt Batt ery
ery
Re mo tecont rol (stationary heater)......... 204
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 90
Batt
Batt er
ery (v
y (v ehicle)
ehicle)
Charging (Remo teOnline)...................... 213
No tes..................................................... 444
No tes (starting assis tance and charg-
ing)........................................................ 446
Batt
Batt er
ery oper
y oper ation
ation, Hybrid system.................. 208 Belt airbag
Belt airbag
Activation................................................ 46
Fu nction/no tes....................................... .50
Bicy
Bicy cle r
cle r ack
ack
Load capacit y........................................ 494
Tr ailer operatio n.................................... .342
Bonnet
Bonnet Function (active bonnet)......................... 424
Opening/closing.................................... 424
Boos
Boost pr t pressur
essur e (dr
e (driv
iver display
er display , Sport
, Sport
menu)
menu).......................................................... 347
Boo Boo t lid
t lid
Ac tivating/deactivating the limiter.......... 104
Closing.................................................... 99
HANDS-FREE ACCESS........................... 101
Opening................................................... 98
Opening dimensions.............................. 491
Po we r closing function............................. 99
Switching the separate locking fea-
ture on/o............................................. 103
Unlocking (emer gency key).................... 103
Br Br ak
ak e
e0uid
0uid
No tes..................................................... 489 Br
Br
ak
ak e f
e f or
orce disce distr tribution
ibution
EBD (Elect ronic Brake forc e Distribu-
tion).......................................................2 71
Br
Br ak
ak es
es
ABS (Anti-lock Braking System).............. 269
Ac tive Brake Assist................................. 290
Ad aptive brake lights.............................. 273
BAS (Brake Assist System).................... .269
Driving tips............................................ 215
EBD (Electronic Brake forc e Distribu-
tion).......................................................2 71
HOLD function....................................... 272
Limited braking e.ect (salt-treated
ro ads)................................................... .215
Ne w/replaced brake linings/brake
discs...................................................... 214
Po st-collision brak e.................................. 64
Ru nning-in no tes.................................... 214
Br Br eakdo
eakdo wn
wn
Assistance overview. ................................ 20
To w- starting........................................... 456
To wing away.......................................... 451
Tr anspo rting theve hicle........................ .453
Wheel chang e........................................ 470 594
594
Index

C
C
Calls
Calls Mercedes me......................................... 400
Camera
Camera, ROAD SURF ACE SCAN
Information........................................... .267
Car w
Car w ash (car
ash (car e)
e)............................................ 429
Car
Car -t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 394
Care
Care 360° camera......................................... 433
Air-water duct........................................ 429
Automatic car wash.............................. .429
Carpet................................................... 434
Decorative foil........................................ 432
Display................................................... 434
EAS Y-PA CK bo otbox.............................. 434
Exterior lighting...................................... 433
Head-up display..................................... 434
High-pressure cleaner............................ 430
Pa int...................................................... 431
Plastic trim............................................4 34
Re alwo od/trim elements......................4 34
Re versing camera..................................4 33
Ro of lining............................................. 434 Seat belt................................................ 434
Seat co
ver............................................. 434
Sensors................................................. 433
St eering wheel....................................... 434
Ta ilpipes................................................ 433
Tr ailer hitc h............................................ 433
Ve hicle soc ketfo rth e high-voltage
battery................................................... 433
Wa shing byhand.................................... 431
Wheels/rims.......................................... 433
Wi ndo ws................................................ 433
Wi per blades.......................................... 433
Car Car pe
pet (Car
t (Car e)
e)............................................... 434
Centr
Centr e airbag (dr
e airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er)............ 53
Changing g
Changing g ears
ears, Selecting a gear
Manually................................................ 233
Changing hub caps
Changing hub caps ....................................... 470
Char
Char ging
ging
At time of depa rture............................... 387
Char geleve l displa y............................... 258
Charg ing cable control panel.................. 247
Con/guring weekly pro/le...................... 387
Ending thech arging process (alternat-
ing cur rent, mode 2/3).......................... 253 Ending
thech arging process (direct
cur rent, mode 4).................................... 257
Indica tor lamps on vehicle soc ket........... 248
Maximum charging cur rent (mains
soc ket).................................................. 246
No tes - charging station (mode 3)......... .245
No tes - fast charging station (mode 4)... .246
No tes - mains soc ket (Mode 2)............... 244
No tes - wallbox (mode 3)........................ 245
No tes on charging the high-voltage
battery................................................... 241
No tes on wireless chargin g.................... 164
On-boa rdelectrical system battery
(12 V).................................................... 448
St arting thech arging process (alter-
nating cur rent, mode 2/3)..................... 250
St arting thech arging process (direct
cur rent, mode 4).................................... 254
St ow ing thech arging cable.................... 241
USB port............................................... .161
Char Char ging cable
ging cable
Control panel......................................... 247
St ow ing................................................. 241
Chau.eur Chau.eur mode
mode, Seat
Fo lding the head restraint ba ck/up........ 128 Ind
ex
595
595

Information...........................................
.125
Moving the front passenger seat into
th ech au.eur position........................... .126
Moving the front passenger seat into
th e normal position................................ 130
Child safe
Child safe ty lock
ty lock
Re ar door................................................ .85
Re ar side wind ows................................... 86
Child seat
Child seat, Occupant saf ety
Appro val categories................................. 71
At tach ing (no tes)..................................... .70
Basic instructions.................................... 65
Fr ont passenger seat (no tes).................... 82
Fr ont passenger seat (without auto-
matic airbag shuto.)............................... .82
ISOFIX/i-Size (/tting)...............................74
No tes on risks and danger s...................... 66
Re ar airbag............................................. .77
Re commendations forch ild restraint
systems................................................... 69
Seats suitable for belt-secured child
re straint systems..................................... 79
Seats suitable for i‑Size child restraint
systems................................................... 74 Seats suitable
for ISOFIX child
re straint systems..................................... 72
Securing on the co-driver seat..................83
Securing on there ar seat......................... 81
To pTe ther................................................ 76
Childr Childr en
en
Av oiding dangers in theve hicle............... .66
Basic instructions.................................... 65
Chock
Chock, Chock Storage location..................................... 469
City lighting
City lighting.................................................. 174
Climat Climat e contr
e contr ol
ol
Ac tivating/deactivating.......................... 191
Ac tivating/deactivating (rear operat-
ing unit)................................................. 191
Ac tivating/deactivating the A/C func-
tion (MBUX multimedia system).............. 192
Ac tivating/deactivating the frag rance
system................................................... 194
Ac tivating/deactivating the synchro-
nisation function (MBUX multimedia
system).................................................. 193
Air-recirculation mode (with /ne parti-
cle pre/lter)...........................................1 93Au
tomatic control................................. .192
Calling up the air conditioning menu....... 191
Defrost.................................................. 192
Demisting the windscreen
(THERMOTRONIC).................................. 189
Demisting windo ws................................ 193
Fi ne particle status displa y..................... 191
Fr ont air vents........................................ 205
Glo vebox air vent.................................. 207
Immediate pre-entry clima tecont rol....... 200
Information on the windscreen heater.... 196
Inserting/re movingthe 0acon (fra-
gr ance system)...................................... 195
Ionisatio n.............................................. .194
No te...................................................... 189
Pre-entry climate control at depa rture
time....................................................... 198
Pre-entry climate control when the
ve hicle is unloc ked................................. 196
Re ar air vents......................................... 206
Re ar operating unit................................ 190
Re sidual heat......................................... 194
Re sidual heat (rear operating unit)......... .194
Setting (MBUX multimedia system)......... 191
Setting the air distribution
(THERMOTRONIC).................................. 189 596 596
Index

Ac
tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual .............543
Ac tive Stop-and-Go Assist inoperative
See Owner's Manual.............................. 543
Ad aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 505
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .505
Ambient light warning support inoper-
ative...................................................... 524
Anti-theT alarm system Malfunction .......524
Apply brake and start vehicle toshiT
out of P or N.......................................... 528
Apply brake todeselect P position .......... 528
Apply brake toengage D or R ................. 529
Apply brake toengage R ......................... 529
Apply parking brake topark Visit
wo rkshop ............................................... 529
Au xiliary battery malfunction (red dis-
play message) ....................................... .532 Au
xiliary battery malfunction (white
displ aymessage) .................................... 532
Bonnet not loc ked Close before start-
ing journey............................................. 522
Bonn etnot loc kedSt op immediately
Close bonnet comple tely........................ 523
Bonnet unlatched Pull le ver again to
open...................................................... 522
Cannot start vehicle See Owner's
Manual.......................................... 526, 561
Change steering wheel/ seat position
until 6 dots are visible on the upper
edge of the screen................................. 549
Charging fault Please change charging
me thod See Owner's Manual .................510
Check brake pads See Owner's Man-
ual......................................................... 537
Check dipped-beam setting (leT/
ri ght-side tra1c) .................................... 504 Consult
workshop without changing
th e transmission position ............... 512, 531
Consult workshop without starting the
ve hicle again .......................................... 512
DC charging inoperative Consult
wo rkshop ............................................... 510
DIGITAL LIGHT Functions limited............ 504
Dipped-beam setting (leT/ right-side
tra1c) Manual adjustment on ly.............. 505
Drive malfunction Stop Consult work-
shop ...................................................... 532
Drive malfunction Stop Restart vehicle ... 531
Drive overheated. Drive on with care ......532
Driver camera inoperative See Own-
er's Manual............................................ 549
Driver camera view cur rently restric-
te d See Owner's Manual........................ 548
Fr ont passenger airbag disabled See
Owner's Manual .................................... .498 602 602
Index

Fr
ont passenger airbag enabled See
Owner's Manual .................................... .499
Hazard warning lamp system Malfunc-
tion........................................................ 505
Head-up display Brightness cur rently
re duced See Owner's Manual .................519
Head-up display cur rently una vailable
See Owner's Manual.............................. 518
Head-up display inoperative ...................518
High-voltage battery malfunction.
Consult workshop without starting the
ve hicle again .......................................... 514
High-voltage battery malfunction. No
start in appr ox. XXX km Consult work-
shop (red display message) .................... 514
High-voltage battery malfunction. No
start in appr ox. XXX km Consult work-
shop (yellow display message) ............... 513Limi
tedav ailability of Active Parking
Assist manoeuvring assistant See
Owner's Manual..................................... 553
Limiter inoperative................................. 539
MULTIBEAM LED Functions limi ted......... 504
N automatically acti vated Please
engage transmission position again ........ 530
Not possible tounlock charging cable
See Owner's Manual.............................. 509
Only elect ric drive available Power
limited................................................... 510
Only select P when vehicle is station-
ary......................................................... 528
PA RKTRONIC and manoeuvring assis-
ta nt not available at rear when towing
a trailer .................................................. 553
PA RKTRONIC inope rative See Own-
er's Manual............................................ 553
Place theke y in the mar ked space
See Owner's Manual.............................. 502 Please
teach in trailer coupling again
using the button in load compartment
Wa itfor it toextend/r etra ct................... 518
Po ssible tostart the engine again........... 562
PRE-SAFE impulse side inoperative
See Owner's Manual..............................5 00
PRE-SAFE inoperative See Owner's
Manual..................................................5 00
Preparing drive system… ........................ 512
Push rear leT seat belt extender back
manual lySee Owner's Manual (e xam-
ple) ........................................................ 498
Re duce speed........................................ 565
Re duced drive system per form ance
See Owner's Manual.............................. 511
Re versing not poss. Consult workshop ... 531
Risk of vehicle rolling away Apply
parking brake topark ............................ .529
Risk of vehicle rolling away Driver's
door open Transmission not in P .............529 Index
603 603

Engine
Engine
Engine number....................................... 480
Starting (emer gency ope ration mode). ... 212
St arting (Remo teOnline)........................ 213
Engine data Engine data Displaying...................................... 229, 230
Engine electr
Engine electr onics
onics
No tes..................................................... 477
Engine number
Engine number............................................. 480
Engine oil Engine oil Additives................................................ 487
Capacity................................................ 488
Checking the oil le vel using the driver
display................................................... 426
MB-F reigabe or MB-Appr oval................. .488
Quality................................................... 488
Te mp erature (driver displa y,Spo rt
menu).................................................... 347
To pping up............................................ .427
ERA ERA -GL
-GLON
ONASS tASS t es
est modet mode
St arting/ending.................................... .414
ESP
ESP ®
®
Crosswind Assist....................................2 70
Tr ailer stabilisatio n................................. 271 ESP
ESP
®
®
(Electr
(Electronic St
onic Stability Pr
ability Pr ogr
ogram)
am)
Ac tivating/deactivating.......................... 271
Fu nction/no tes...................................... 269
EU type appr ov
EU type appr oval number
al number ............................. 480
Exiting pr
Exiting pr ocedure
ocedure
Playing back.......................................... 336
Ext
Ext er
erior lighting
ior lighting
Care...................................................... 433
Ey
Ey e contr
e contr ol
ol
Operating the Look and Answer func-
tion........................................................ 360 F
F
F
F a
av
vour
our it
ites
es
Ad ding................................................... 379
F
F ine par
ine par ticle st
ticle status display
atus display ........................... 191
F
F ir
ir e e
e e xtinguisher
xtinguisher.......................................... 438
F
F irs
irst-aid kit t-aid kit (soT
(soTsided)
sided)................................. 438
Flacon
Flacon Inserting/removing................................ 195
Flat tyre
Flat tyre, Breakdown MOExtended tyres................................. 439 No
tes..................................................... 439
TIREFIT kit.............................................. 440
Wheel chang e........................................ 470
Floor mats
Floor mats................................................... 167
F F og light (enhanced)
og light (enhanced) .................................... .173
F
F oil cov
oil cov er
ering
ing
Ra dar and ultrasonic sensor s................. 267
F
F olding t
olding t able
able................................................ 151
F
F oo
oo tr
trest
est
Re ar passen ger seat...............................1 28
Fr
Fr agr
agr ance syst
ance syst em
em, Air freshener system,
Fr ag rance, Perfume, Perfume vial
Ac tivating/deactivating.......................... 194
Ad justing the frag rance intensity............ 194
Inserting/removing the 0acon................1 95
Setting................................................... 195
Fr
Fr ee
ee soTw
soTw are
are................................................. 44
Fr
Fr eq
eq uencies
uencies
Mobile phone......................................... 478
Tw o-w ayradio........................................ 478
Fr Fr ont airbag (dr
ont airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er).............. 53
Fr
Fr ont passeng
ont passeng er head r
er head res
estrtraint
aint
Fo lding back/up (chau.eur mode)......... 128 606
606
Index