2021 MERCEDES-BENZ S-CLASS SALOON LONG bonnet

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Bonnet not locked Stop
immediately Close bonnet
completely *T
he bonn etis not loc ked. &
W WARNING
ARNING Risk of accident due todriving with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine bonnet is loc ked. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Close the bonnet (/ page 424).
M *T
he bonn etis open. &
W
WARNING
ARNING Risk of accident due todriving with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine bonnet is loc ked. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Close the bonnet. Display messages and
warning/indicator lamps
523
523

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Cannot start vehicle See
Owner's Manual *T
hevehicle cann otbe star ted. #
Switch theve hicle o. and switch it back on #
Ifth e display message still appears, consult a quali/ed specialist workshop.
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N NO
OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 428). #
Have the engine cooling system checked at a quali/ed specialist workshop.
ÿ
Coolant Stop Switch off
the vehicle *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. 526
526
Displ
aymessages and warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ *T
here is a malfunction in the engine cooling system. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
8
Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
! Clean the fuel filter *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the fuel /lter is dirty or thewa ter in the fuel /lter needs tobe drained. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
527
527

Engine
Engine
W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ÿ
Coolant warning lamp (red) *T
he 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
R The engine coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. Do not continue driving. 578
578
Displ
aymessages and warning/indicator lamps

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

¸
temp orarily una vailable Sensors
dirty....................................................... 546
Ø Top up AdBlue Emer gency op. in
XXX km See Owner's Manual................ .566
+ Top up coolant See Owner ’s
Manual.................................................. 526
¥ Top up washer 0uid...................... .524
u Towing not permitted See Own-
er's Manual ............................................ 508
ï Trailer coupling in motion .............. 516
d Vehicle is operational Switch o.
ve hicle before exiting............................. 516
É Vehicle rising Please wait.............. 552
h Warning tyre defect....................... 564
h Wheel sensor(s) missing ................ 563
Ø XX,X l Top up AdBlue Emerg.
op.: max. XXX km/h Start not poss.
in XXX km.............................................. 566 Ø
XX,XlTop up AdBlue Swit ch
ve hicle on, wait 60 sec. or engine
start not poss........................................ 567
"Electric" drive prog ram cur rently
una vailable............................................. 510
AC charging inoperative Consult work-
shop ...................................................... 510
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 544
Ac tive Blind Spot Assist inoperative........ 545
Ac tive bonnet malfunction See Own-
er's Manual............................................ 521
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........557
Ac tive Brake Assist Functions limi ted
See Owner's Manual.............................. 558
Ac tive Distance Assist available again ..... 540
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 539
Ac tive Distance Assist inoperative.......... 540 Ac
tive Emer gency Stop Assist cur-
re ntly una vailable See Owner's Manual ... 542
Ac tive Emer gency Stop Assist inoper-
ative...................................................... 542
Ac tive Lane Change Assist cur rently
una vailable See Owner's Manual ............ 542
Ac tive Lane Change Assist inoperative... 543
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ............ 545
Ac tive Lane Keeping Assist inoperative... 545
Ac tive Parking Assist and
PA RKTRONIC inope rative See Own-
er's Manual............................................ 553
Ac tive Steering Assist cur rently
una vailable due tomultiple emer-
ge ncy stops........................................... 541
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ............ 541
Ac tive Steering Assist inoperative...........5 41 Index
601 601

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