2021 MERCEDES-BENZ S-CLASS SALOON LONG air condition

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
h
Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the di.erence in tyre pressure between the individual
wheels is toogr eat. #
Check the tyre pressure and add air, if necessar y. #
When the tyre pressure is cor rect, restart the tyre pressure monitoring system (/ page 465).
h Warning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenl y.The wheel position will be displa yed. &
W
WARNING
ARNING Risk of an accident from driving with a 0at tyre
R The tyres can overheat and be damaged.
R The driving characteristics as well as the steering and braking characteristics may be greatly impaired.
Yo u could then lose control of theve hicle. #
Do not drive with a 0at tyre. #
Do not exceed the maximum permissible driving distance in emer gency mode and the maximum permissible
speed with a 0at MOExtended tyre. #
Obser vethe no tes on 0at tyres. No
tes in theev ent of a 0at tyre (/ page 439). #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyres. 564
564
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 #
Initiate a new swivelling procedure and do not re-couple the trailer until the display message disappears. #
Notethe messages on the driver's displa y.
If th e trailer hitch is swivelling: #
Wait until the ball neck has reached the operational position.
Ù
Po we r steering warning
lamp (yellow) *T
he yellow po wer steering warning lamp is lit while the engine is running.
The po wer assistance or the steering itself is malfunctioning. #
Notethe messages on the driver displa y.
Ù Po we r steering warning
lamp (red) *T
he red po wer steering warning lamp is lit while the engine is running.
The po wer assistance or the steering itself is malfunctioning. &
W
WARNING
ARNING Risk of accident if steering capability is impaired
If th e steering 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 tra1c conditions. Do not
continue driving under any circums tances. #
Consult a quali/ed speciali stwo rkshop. #
Notethe messages on the driver displa y.576
576
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
Ù
Re ar axle steering warning
lamp (yellow) *T
he yellow rear axle steering warning lamp is lit while the engine is running.
The rear axle steering is malfunctioning. #
Notethe messages on the driver displa y.
Ù Re ar axle steering warning
lamp (red) *T
he redre ar axle steering warning lamp is lit while the engine is running.
The rear axle steering is malfunctioning. &
W
WARNING
ARNING Risk of accident if steering capability is impaired
If th e steering 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 tra1c conditions. Do not
continue driving under any circums tances. #
Consult a quali/ed speciali stwo rkshop. #
Notethe messages on the driver displa y. Display messages and
warning/indicator lamps
577
577

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

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions &
W
WARNING
ARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dista nce can increase in emergency braking situations. #
Stop in a safe location immediatel y.Do not continue driving! #
Consult a quali/ed specialist workshop. &
W
WARNING
ARNING Risk of an accident due tolow brake 0uid le vel
If th e brake 0uid le vel is too lo w,the braking e.ect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and tra1c conditions. Do not continue driving. #
Consult a quali/ed specialist workshop. #
Do not top up the brake 0uid. Display messages and
warning/indicator lamps
583
583

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Æ
Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
ATer you drive o., the system's range of functions is restric ted due tothete ach-in process.
Depending on the ambient conditions, thete ach-in process may take afew minutes. #
Obser vethe no tes on Active Brake Assist (/ page 290).
ä
Suspension warning lamp
(yellow) *T
he yellow AIRMATIC / E- ACTIVE BODY CONTROL warning lamp is lit.
A fault has occur red in AIRMATIC / E- ACTIVE BODY CONTROL. #
Notethe messages on the driver's displa y.
ä
Suspension warning lamp
(red) *T
he red AIRMATIC / E- ACTIVE BODY CONTROL warning lamp is lit.
A fault has occur red in AIRMATIC / E- ACTIVE BODY CONTROL.
* N
NOOTE
TE The vehicle's driving characteristics will ha vechanged signi/cantl y. #
Consult a quali/ed specialist workshop. #
Notethe messages on the driver's displa y. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
585
585

Dr
Dr
iving safe
iving safe ty syst
ty systems
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
!
ABS warning lamp *T
he yellow ABS warning lamp is lit while theve hicle is running.
ABS is malfunctioning.
If an additional warning tone sounds, EBD is malfunctioning.
Other driving systems and driving sa fety systems may also be malfunctioning. #
Notethe messages on the driver displa y. &
W WARNI NG
ARNI NGThere is a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking.
The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addition,
ot her driving saf ety sy stems are swit ched o.. #
Drive on carefull y. #
Have the brake system checked immediately at a quali/ed specialist workshop. ÷
ESP ®
wa rning lamp 0ashes *
The yellow ESP ®
wa rning lamp 0ashes while theve hicle is in motion.
One or more wheels ha vereached their grip limit (/ page 269). #
Adapt your driving style tosuit thero ad and weather conditions. 586 586
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