2021 MERCEDES-BENZ S-CLASS SALOON LONG light

W
W
ar
ar ning and indicat
ning and indicat or lam
or lamps
ps Ov
Ov
er
ervie
vie w of indicat
w of indicat or and w
or and war
arning lam
ning lamps ps Some systems will per
form a self-test when the
ve hicle is switched on. Some indicator and warn-
ing lamps may brie0y light up or 0ash. This beha v-
iour is non-critical. These indicator and warning
lamps indicate a malfunction only if they light up
or 0as haTer theve hicle has been star ted or dur-
ing a journe y.
Dr
Dr iv
iver's display
er's display Dr
Dr
iv
iver's displa
er's displa y wit
y with dr
h driv
iver camera
er camera Indicat
Indicat
or and w
or and w ar
arning lam
ning lam ps:
ps:
6 Restraint system (/ page 573)
ü Seat belt (/ page 573)
_ Reduced po wer (/ page 574)
Ú System error (/ page 574)
# Electricalfault (/ page 574)
ï Trailer hitch (/ page 575)
Ù Powe r steering (yellow) (/ page 575)
Ù Power steering (red) (/ page 575)
Ù Rear axle steering (yellow)
(/ page 575) Ù
Rear axle steering (red)
(/ page 575)
ÿ Coolanttemp erature (/ page 578)
; Engine diagnostics (/ page 578)
p V
Vehicles wit
ehicles wit h a pe
h a petr
trol engine:
ol engine: engine
operating temp erature (/ page 578)
% V
Vehicles wit
ehicles wit h a diesel engine:
h a diesel engine: preglow
# Electricalfault (/ page 578)
8 Reser vefuel wi thfuel /ller 0ap loca-
tion indicator (/ page 578)
! Electric parking brake (red)
(/page 581)
! Electric parking brake (yellow)
(/page 581)
J Brakes (yellow) (/ page 581)
J Brakes (red) (/ page 581)
L Distancewarning (/ page 584)
Ó Active Brake Assist (/ page 584)
ê Active Brake Assist (/ page 584)
Æ Active Brake Assist (/ page 584) Display messages and
warning/indicator lamps
571 571

ä
AIRMATIC / E- ACTIVE BODY CON-
TROL (/ page 584)
! ABS (/page 586)
÷ ESP®
(/ page 586)
å ESP®
OFF (/ page 586)
H Mercedes-Benz emer gency call sys-
te m (/ page 588)
h Tyre pressure monitoring system
(/ page 589)
T Standing lights (/ page 169)
L Low beam (/ page 169)
K High beam (/ page 171)
#! Turn signal lights (/ page 171)
R Rear fog light (/ page 169) 572
572
Display message
s andwarning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ü
Seat belt warning lamp
0ashes *T
he red seat belt warning lamp 0ashes and an intermittent warning tone sounds.
The driver or front passenger has not fastened his/her seat belt while theve hicle is in motion. #
Fasten your seat belt (/ page 51).
There are objects on the front passenger seat. #
Remo vethe objects from the front passenger seat.
ü
Seat belt warning lamp
lights up *T
he red seat belt warning lamp lights up once theve hicle has star ted.
In addition, an intermittent warning tone may sound.
The red seat belt warning lamp reminds the driver and front passenger tofasten their seat belts. #
Fasten your seat belt (/ page 51).
If yo u ha veplaced objects on the front passenger seat, there d seat belt warning lamp may remain lit. Hybr
Hybr
id syst
id syst em
em W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
_
Re duced warning lamp
po wer *T
heyellow reduced-po werwa rning lamp is on.
Drive system po wer output is reduced. #
Notethe messages on the driver's displa y.574
574
Display message
s andwarning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
8
Fu elreser vewarning lamp
lights up *T
he yellow fuel reser vewarning lamp lights up while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel. Br
Br
ak
ak es
es W
W
ar
ar ning/indicat
ning/indicat or lamp P
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
!
Electric parking brake indi-
cator lamp (red)
!
The electric parking brake
(yellow) indicator lamp *T
he red electric parking brake indicator lamp 0ashes or is lit.
The yellow electric parking brake indicator lamp is also lit in theev ent of a malfunction. #
Notethe messages on the driver displa y. Display messages and
warning/indicator lamps
581 581

Dr
Dr
iving syst
iving syst ems
ems W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
L
Wa rning lamp for distance
wa rning function *T
he red distance warning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obstacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the distance.
Fu nction of Active Brake Assist (/ page 290).
Ó Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
Due todirty sensors or a malfunction, the system is not available or thera nge of functions is restric ted. #
Notethe messages on the driver's displa y.
ê
Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
The system is switched o. or thera nge of functions has been automatically restric ted.
This may be the case if the driver is not wearing a seat belt or ano ther driving system has been activated. #
Obser vethe no tes on Active Brake Assist (/ page 290).584
584
Display messages and
warning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
÷
ESP ®
wa rning lamp lights up *
The yellow ESP ®
wa rning lamp is lit while theve hicle is running.
ESP ®
is malfunctioning.
Other driving systems and driving sa fety systems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the driver's displa y. &
W
WARNI NG
ARNI NGRisk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot carr y outvehicle stabilisation. In addition, other driving saf ety sy stems are
swit ched o.. #
Drive on carefull y. #
Have ESP ®
ch ecked at a quali/ed specialist workshop. å
ESP ®
OFF warning lamp *
The yellow ESP ®
OFF warning lamp is lit while theve hicle is running.
ESP ®
is deactivated.
Other driving systems and driving sa fety systems may also be inoperative. &
W
WARNING
ARNING Risk of skidding when driving with ESP ®
deactivated
ESP ®
does not act tostabilise theve hicle. The availability of fu rther driving saf ety sy stems is also limi ted. #
Drive on carefull y. #
Deactivate ESP ®
only for as long as the situation requ ires. Display message
s andwarning/indicator lamps
587
587

T
T
yr
yr e pr
e pr essur
essur e monit
e monit or
or W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
h
Ty re pressure monitoring
system warning lamp 0ashes *The
yellow tyre pressure monitor warning lamp (pressure loss/malfunction) 0ashes for appr oximately one minute and
th en remains lit.
The tyre pressure monitor is malfunctioning. &
W
WARNING
ARNING There is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
Ty res with insu1cient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring system checked at a quali/ed specialist workshop. h
Ty re pressure monitoring
system warning lamp lights
up *T
he yellow tyre pressure monitoring system warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring system has de tected tyre pressure loss in at least one of the tyres. &
W
WARNING
ARNING Risk of an accident due toinsu1cient tyre pressure
R The tyres can burst.
R The tyres can wearexcessively and/or une venly.
R The driving characteristics as well as the steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. Display messages and
warning/indicator lamps
589
589

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