MERCEDES-BENZ S-CLASS SALOON LONG 2022 Owners Manual

Display messages
Possible causes/consequences and P Solutions 
If the display message does not disappear, stop the vehicle in accordance with the tr aPc conditions and restart
the vehicle.
Active Brake Assist Func-
tions limited See Owner's
Manual * For vehicles with the Driving Assistance Package, the following functions may be temporarily unavailable or only parti-
all
y available:
= Active Brake Assist with cross-traPc function
= Evasive Steering Assist
= PRE!

Battery
Display messages
Possible causes/consequences and P Solutions
=
12 V on-board electrical
system Visit workshop * The 12 V on-board electrical system is malfunctioning. 
Consult a qualiNed specialist workshop immediately.
=
Stop vehicle See Owner's
Manual * The 12 V battery is no longer being charged and the state of charge is too low.
* NOTE P
ossible engine damage if you continue driving 
Do not continue driving under any circumstances. 
Consult a q
ualiNed specialist workshop. 
Stop the vehicle immediately in accordance with the tr
aPc conditions. Do not continue driving. 
Switch oM t
he vehicle. 
Consult a q
ualiNed specialist workshop. Display messages and warning/indicator lamps
569

Display messages
Possible causes/consequences and P Solutions
=
Start the vehicle to charge
the 12 V battery * The vehicle is
oM and t he state of charge of the 12 V battery is too low. 
Switch oM electr
ical consumers that are not required. 
Drive for 30!

Display messages
Possible causes/consequences and P Solutions
Û
Battery overheated Stop,
everybody out! Outdoors if
possible * The 48 V battery is overheating. There is a risk of
Nre. 
Stop the vehicle immediately in accordance with the tr
aPc conditions. 
If possible, stop the vehicle in the open air and ensure that all vehicle occupants get out.
% Supporting vehicle functions may activate automatically, e.g. the air-recirculation mode as part of climate control. 
Do not continue driving. 
If smoke is present, leave the danger zone and call the Nr
e service immediately.
Consult a q
ualiNed specialist workshop even if there are no external signs of a Nre.
Û
48 V battery See Owner's
Manual * The 48 V on-board electrical system has function restrictions.
Comf
ort functions may be restricted. 
Consult a q
ualiNed specialist workshop immediately.

Display messages
Possible causes/consequences and P Solutions 
Drive the vehicle for a while to charge the 12 V battery and the 48 V battery aser disconnecting t he charger from
the vehicle.
If the Possible to start the vehicle again displa
y message does not appear aser a few minutes: 
Try to start the vehicle. 
If the vehicle does not start, consult a q
ualiNed specialist workshop.
Cannot start vehicle See
Owner's Manual * The state of charge of the 48 V battery is too low. You can no longer start the vehicle. 
Switch oM electr
ical consumers that are not required. 
Connect a suitable charger approved for Mercedes-Benz with suPcient c
harge output to the jump-start connection
point of the 12 V battery (  page 454).
The 48 V battery is charged via the voltage converter in the vehicle.
Possible to start the vehi-
cle again * The 48 V battery has been charged automatically via the voltage converter. 
Start the vehicle and drive for a while to charge the 12 V battery and the 48 V battery. Tyre pressure monitor
Display messages
Possible causes/consequences and P Solutions
Tyre press. monitor cur-
rently unavailable * There is interference from a powerful radio signal source As a result, no signals from the tyre pressure sensors are
being r
eceived. The tyre pressure monitoring system is temporarily unavailable.
The tyre pressure monitoring system will restart automatically as soon as the cause has been rectiNed.572
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions 
Drive on
Tyre press. monitor inoper-
ative * The tyre pressure monitoring system is malfunctioning. &
WARNING Ther e 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.
T
yres with insuPcient tyre pressure may impair the driving characteristics as well as steering and braking. 
Have the tyre pressure monitoring system checked at a q
ualiNed specialist workshop. Tyre pressure monitor inop-
erative No tyre pressure
sensors
* The wheels
Ntt
ed do not have suitable tyre pressure sensors. The tyre pressure monitoring system is deactivated. 
Fit wheels with suitable tyre pressure sensors.
é
Wheel sensor(s) missing * There is no signal from the tyre pressure sensor in at least one wheel. No pressure value is displayed for the
aMect
ed
tyre. 
Have the faulty tyre pressure sensor replaced at a q
ualiNed specialist workshop.
é
Check tyre(s) * The tyre pressure in one or more tyres has dropped
signiNcantl
y.
The wheel position is displayed. A warning tone will also sound. Display messages and warning/indicator lamps
573

Display messages
Possible causes/consequences and P Solutions &
WARNING Risk of an accident due t o insuPcient tyre pressure
= The tyr
es can burst.
= The tyres can wear excessively and/or unevenly.
= The driving characteristics as well as the steering and braking may be greatly impaired.
You could then lose control of the vehicle. 
Observe the recommended tyre pressures. 
Adjust the tyre pressure if necessary. 
Stop the vehicle in accordance with the tr
aPc conditions. 
Check the tyre pressure ( pag
e 469) and the tyres.
é Rectify tyre pressure * The tyre pressure is too low in at least one of the tyres, or the
diMer
ence in tyre pressure between the individual
wheels is too great. 
Check the tyre pressure and add air, if necessary. 
When the tyre pressure is correct, restart the tyre pressure monitor (  pag
e 472).
é Warning tyre malfunction * The pressure in one or more tyres has dropped suddenly. The wheel position is displayed.574
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions &
WARNING Risk of an accident fr om driving with a Oat tyre
= The tyr
es can overheat and be damaged.
= The driving characteristics as well as the steering and braking characteristics may be greatly impaired.
You could then lose control of the vehicle. 
Do not drive with a Oat tyr
e. 
Do not exceed the maximum permissible driving distance in emergency mode and the maximum permissible
speed wit

h a Oat MOExtended tyre. 
Observe the notes on Oat tyr
es. Notes on Oat
tyr
es ( page 445). 
Stop the vehicle in accordance with the tr
aPc conditions. 
Check the tyres.
é Tyre(s) overheated * At least one tyre is overheating. The
aMect
ed tyres are displayed in red. At temperatures close to the limit value, the
tyres are displayed in yellow. &
WARNING Risk of an accident fr
om driving with overheated tyres
Overheated tyres can burst. 
Reduce speed so that the tyres cool down. Display messages and warning/indicator lamps
575

Display messages
Possible causes/consequences and P Solutions
é
Reduce speed * At least one tyre is overheating. The
aMect ed tyres are displayed in red. At temperatures close to the limit value, the
tyres are displayed in yellow. &
WARNING Risk of an accident fr
om driving with overheated tyres
Overheated tyres can burst. 
Reduce speed so that the tyres cool down. Exhaust gas
aser
treatmentDisplay messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions