2021 MERCEDES-BENZ S-CLASS SALOON LONG engine

Displa
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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. 532 532
Display messages and
warning/indicator lamps

Batt
Batt
ery
ery Displa
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uences andM
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#
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. Displ
aymessages and warning/indicator lamps
559
559

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ossible causes/consequences and uences andM
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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 448). #
Plug-in h Plug-in h ybr
ybrid:
id:Char getheve hicle at a charging station (/ page 241).
#
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. 560 560
Displ
aymessages and warning/indicator lamps

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ossible causes/consequences and uences andM
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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. Display message
s andwarning/indicator lamps
561 561

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 448).
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
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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. 562
562
Displ
aymessages and warning/indicator lamps

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ossible causes/consequences and uences andM
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Solutions
Ø
XX,Xl Top up AdBlue
Switch vehicle on, wait 60
sec. or engine start not
poss. *
The AdBlue ®
tank is em pty. Yo u can no longer start theve hicle. #
Add at least the amount of AdBlue ®
displa yed (/ page 239). #
Switch on theve hicle and waitfor appr oximately 60 seconds. #
Start theve hicle.
¯
AdBlue system fault See
Owner's Manual *
The AdBlue ®
system is malfunctioning. #
Consult a quali/ed speciali stwo rkshop immediatel y.
¯
AdBlue system malfunction
Emergency op. in XXX km
See Owner's Manual *
The AdBlue ®
system is malfunctioning. Performance will be reduced once there maining distance displa yed has been
co vered. #
Consult a quali/ed specialist workshop immediatel y. Display messages and
warning/indicator lamps
567 567

Displa
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y messag
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ossible causes/consequences and uences andM
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Solutions
¯
AdBlue system malfunction
Emerg. op.: max. XXX
km/h Start not poss. in
XXX km *
Po we rre striction due totheAd Blue ®
system fault. ATer the distance displa yed has been co vered, it will no longer be
possible tostart theve hicle. #
Consult a quali/ed specialist workshop immediatel y.
¯
AdBlue system fault Engine
start not possible *
The AdBlue ®
system is malfunctioning. You can no longer start theve hicle. #
Consult a quali/ed specialist workshop immediatel y.568 568
Display message
s andwarning/indicator lamps

Engine oil
Engine oil
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ossible causes/consequences and uences andM
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Solutions
5
Add 1 litre engine oil when
next refuelling *T
he engine oil le vel has dropped tothe minimum le vel.
* N NOOTE
TE Engine damage caused bydriving with insu1cient engine oil #
Avoid long journe yswith insu1cient engine oil. #
When next refuelling, add 1 lit reof engine oil (/ page 427).
No tes on engine oil (/ page 487).
5
Engine oil level Reduce oil
level *T
he engine oil le vel is too high.
* N NOOTE
TE Engine damage caused bydriving with excess engine oil #
Avoid long journe yswith excess engine oil. #
Consult a quali/ed specialist workshop immediately and ha vethe engine oil le velre duced.
5 Engine oil level Stop
Switch off the vehicle *T
he engine oil le vel is too lo w.
* N NO
OTE
TE Engine damage caused bydriving with insu1cient engine oil #
Avoid long journe yswith insu1cient engine oil. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. Display messages and
warning/indicator lamps
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569