battery MERCEDES-BENZ S-CLASS SALOON 2022 Owner's Guide

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
PRE-SAFE inoperative See
Owner's Manual *
The PRE‑SAFE ®
functions are malfunctioning. #
Consult a quali/ed specialist workshop.
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.
Á
Change key batteries *T
hekey battery is dischar ged. #
Replace the battery (/ page 86). Display messages and
warning/indicator lamps
429
429

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
&
inoperative Battery low *T
he on-board elect rical system voltage is too lo w.
The stationary heater has switched itself o.. #
Drive an extended distance until the battery has reached a su1cient charge leve l again.
&
Inoperative Refuel vehicle *T
here is too little fuel in the fuel tank. The stationary heate r cannot be switched on. #
Refuel theve hicle. V
V
ehicle
ehicle Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions *T
he driver's displ ayis inoperative due toafa iled soTware update.
The display message will be shownevery time the engine is star ted. &
W
WARNING
ARNING Risk of accident if the driver display fails
If th e driver display has failed or is malfunctioning, function restrictions in systems releva nt tosaf ety cann otbe
de tected.
The operating saf ety of your vehicle may be impaired. Displ
aymessages and warning/indicator lamps
435
435

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Drive on carefull y. #
Have theve hicle checked immediately at a quali/ed specialist workshop. If
th e operating saf ety of your vehicle is impaired, park theve hicle immediately and safel y.Contact a quali/ed special-
ist workshop.
If th e driver's display fails, you may not recognise function restrictions a.ec ting systems releva nt tosaf ety or the
speed displa y,forex ample. The operating saf ety of theve hicle may be impaired (/ page 323). #
Have theve hicle checkedby aqu ali/ed specialist workshop immediatel y.
d
Vehicle is operational
Switch off vehicle before
exiting *Y
ou are leaving theve hicle in a ready-to-drive state. #
Get out of theve hicle, secure it against rolling away and take theke y with you. #
Ifyo u do not lea vetheve hicle, switch o. the electrical consumers, e.g. the seat heating. Otherwise, the 12‑V bat-
te ry may dischar geand starting the engine may be possible only with the help of a second battery (jump start).
Head-up display currently
unavailable See Owner's
Manual *T
he head-up displ ayistemp orarily una vailable. Possible causes:
R malfunctions in the po wer supply
R signal inter fere nce #
Stop in accordance with the tra1c conditions and switch theve hicle o. and on again. #
Ifth e display message still appears, consult a quali/ed specialist workshop. 436 436
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
Drive malfunction Stop
Consult workshop *T
he transmission is malfunctioning. #
Stop theve hicle immediately in a safe location and do not continue driving. #
Consult a quali/ed specialist workshop.
Drive overheated. Drive on
with care *T
he transmission is overheating. When the display message is active, start-up and driving characteristics may be tem-
porarily impaired. #
Drive at low engine speed. #
Avoid sporty driving. #
Before pulling away on uphill gradients, let the transmission cool down until the display message disappears.
Auxiliary battery malfunc-
tion (white display message) *T
here is a malfunction in the auxiliary batter y. #
Consult a quali/ed specialist workshop. #
Until then, alw ays select park position jmanually before you switch o. theve hicle. #
Before leaving theve hicle, apply the electric parking brake.
Auxiliary battery malfunc-
tion (red display message) *T
here is a malfunction in the auxiliary batter y. #
Consult a quali/ed specialist workshop. #
Until then, alw ays select park position jmanually before you switch o. theve hicle. #
Before leaving theve hicle, apply the electric parking brake. 450 450
Display messages and
warning/indicator lamps

Batt
Batt
ery
ery Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
#
12 V on-board electrical
system Visit workshop *T
he 12 V on-board elect rical system is malfunctioning. #
Consult a quali/ed specialist workshop immediatel y.
#
Stop vehicle See Owner's
Manual *T
he 12 V battery is no longe r beingcharge d and the state of charge istoo lo w.
* N NO
OTE
TE Possible engine damage if you continue driving #
Do not continue driving under any circumstances. #
Consult a quali/ed speciali stwo rkshop. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Switch o. theve hicle. #
Consult a quali/ed specialist workshop. 476
476
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
#
Start the vehicle to charge
the 12 V battery *T
hevehicle is o. and the state of charge ofthe 12 V battery is too lo w. #
Switch o. elect rical consume rsthat are not requ ired. #
Drive for 30–60 mins.
or #
Char gethe 12 V battery when stationary (/ page 386).
#
Stop vehicle Leave vehicle
on to charge the 12 V bat-
tery *T
he 12 V battery charge leve l is too lo w. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Leavetheve hicle running #
Ifth e display message disappears: drive on. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop.
Û Stop vehicle See Owner's
Manual *T
he 48 V on-board elect rical system is malfunctioning. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Switch o. the engine. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
477 477

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Û
48 V battery See Owner's
Manual *T
he 48 V on-board elect rical system has function restrictions.
Comfort functions ma y berestric ted. #
Consult a quali/ed specialist workshop immediatel y.
Ý
Please wait 48 V battery
charging *T
he 48 V battery is dischar ged. You ha veswitched on theve hicle while the 12 V battery was being charge d with a
suitable charge r or while ano ther vehicle was pr oviding starting assistance.
The dischar ged 48 V battery is charge d automatically via thevo ltage con verter. ATer a fewminutes, the driver's dis-
play will show thePossible to start the engine again display message. #
Start theve hicle. #
Drive theve hicle for a while tocharge the 12 V battery and the 48 V battery aTer disconnecting thech arge r from
th eve hicle.
If th ePossible to start the engine again display message does not appear aTer a few minu tes: #
Tryto start theve hicle. #
Ifth eve hicle does not start, consult a quali/ed specialist workshop.
Cannot start vehicle See
Owner's Manual *T
he state of charge ofthe 48 V battery is too lo w.You can no longer start theve hicle. #
Switch o. elect rical consume rsthat are not requ ired. 478 478
Display message
s andwarning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Connect a suitable charge r appr ovedfo r Mercedes-Benz with su1cient charge output tothe jump-start connection
point of the 12 V battery (/ page 386).
The 48 V battery is charge d via thevo ltage con verter in theve hicle.
Possible to start the engine
again *T
he 48 V battery has been charge d automatically via thevo ltage con verter. #
Start theve hicle and drive for a while tocharge the 12 V battery and the 48 V batter y. T T
yr
yr e pr
e pr essur
essur e monit
e monit or
or Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
being received. The tyre pressure monitoring system is temp orarily una vailable.
The tyre pressure monitoring system will restart au tomatically as soon as the cause has been recti/ed. #
Drive on.
Tyre press. monitor inoper-
ative *T
he tyre pressure moni toring system is malfunctioning. &
W WARNI NG
ARNI NGThere 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. Displ
aymessages and warning/indicator lamps
479
479

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Notethe messages on the driver displa y.
If t
If t he coolant t
he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the low
he lower end of t
er end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Consult a quali/ed specialist workshop.
If t
If t he coolant t
he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the upper end of t
he upper end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Exit theve hicle and keep a safe distance from it 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
Coolant warning lamp (yel-
low) *T
he yellow coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The charge air, transmission oil or battery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
491
491

Animals
Animals
Pets in theve hicle.................................... 83
Anti-t
Anti-theT heTprot
pr otection
ection
Ad ditional door loc k................................. 88
Immobiliser............................................ 113
ASS YS
ASS YST PL
T PL US
US
Battery disconnection periods................ 363
Displaying the service due dat e.............. 362
Fu nction/no tes...................................... 362
Re gular maintenance work..................... 362
Special service requ irements................. 362
AT ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alar m........................... 114
Fu nction................................................ 113
Interior pr otection function.....................1 15
Priming/deactivating interior pr otec-
tion........................................................ 115
Priming/deactivating tow- awa y pro-
te ction................................................... 115
To w- awa y protection function................. 114
A A TTENTION ASSIST
TTENTION ASSIST, De tecting inat tentive-
ness Setting.................................................. .236 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................................................ 234
System limits......................................... 234
A
A ugment
ugment ed r
ed reality
eality
Fu nction on the head-up displa y............. 297
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........... 53
A
A ut
ut omatic dr
omatic dr iving lights
iving lights, Headlamps............. 164
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 la mps...... 55
A
A ut
ut omatic lat
omatic lat er
eral suppor
al suppor t adjus
t adjustmenttment
Setting................................................... 133
A
A ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident ,
Occupant saf ety............................................. 61
A
A ut
ut omatic mirr
omatic mirror f or folding function
olding function
Ac tivating/deactivating.......................... 179
A
A ut
ut omatic seat adjus
omatic seat adjustment tment
Setting................................................... 132 A
A
ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 213
Engaging drive position..........................2 15
Engaging reve rsege ar............................ 214
Kickdown............................................... 216
Manual gear changing........................... .215
Selecting park position........................... 214
St eering wheel gearshiT paddles............ 215
Tr ansmission position displ ay................. 213
Tr ansmission position s........................... 213
Axle load Axle load Perm issible............................................ 416 B
B
Bad w
Bad w eat
eather light
her light ......................................... 168
Bag hook
Bag hook..................................................... 150
B B AS (Br
AS (Br ak
ake Assis
e Assist Syst t System)
em), Brake Assist
System, Braking assistance, Emer gency
braking........................................................ 230
Batt Batt ery
ery
Re mo tecont rol (stationary heater)......... 194
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 86 504
504
Index