2020 MERCEDES-BENZ S-CLASS SALOON LONG sensor

Display messages
Possible causes/consequences and M
MSolutions
É Vehicle rising Please wait *T
hevehicle le vel is too lo w.The vehicle will be raised tothe selected vehicle le vel. #
Wait until the display message disappears before pulling away.
Limited availability of
Active Parking Assist
manoeuvring assistant See
Owner's Manual *A
ctive Parking Assis t’s manoeuvring assis tant is temp orarily una vailable or only partially available. #
Clean all sensors of the parking and camera sy stem (/ page 356). #
Ifth e display message still appears, consult a qualified specialist workshop.
PARKTRONIC and manoeu-
vring assistant not availa-
ble at rear when towing a
trailer *W
hen you es tablish the electrical connection tothe trailer, there ar Parking Assist PARKTRONIC and manoeuv ring
assi stant will be una vailable. #
Press the left-hand Touch Control and ackn owledge the display message.
PARKTRONIC inoperative
See Owner's Manual *P
arking Assist PARKTRONIC is malfunctioning.
Once the cause of the problem is no longer present, the sy stem will be available again. #
Continue driving while paying attention totheve hicle's sur roundings.
or #
Stop theve hicle in accordance with the tra ffic conditions and restart the engine. #
Ifth e display message still appears, consult a qualified specialist workshop. 532
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Connect a suitable charge r appro vedfo r Mercedes-Benz with suf ficient charge output tothe jump-s tart connec‐
tion point of the12 V battery (/ page372).
The 48 V bat tery isch arge d via thevo ltage con verter in theve hicle.
Motor can be started again *T
he 48 V battery has been charge d automatically via thevo ltage con verter. #
Start the engine and drive theve hicle for a while tocharge the12 V battery and the 48 V batter y. Ty
re pressure moni tor Display messages
Possible causes/consequences and M
MSolutions
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 recei ved. The tyre pressure monitoring sy stem is temp orarily una vailable.
The tyre pressure monitoring sy stem will restart automatically as soon as the cause has been rectified. #
Drive on.
Tyre press. monitor inoper-
ative *T
he tyre pressure monitoring sy stem is malfunctioning. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
The tyre pressure monitoring sy stem cann otissue a warning if there is pressure loss in one or more of the
tyres.
Ty res with insuf ficient tyre pressure may impair the driving characteristics as well as steering and braking. Display messages and
warning/indicator lamps 541

Display messages
Possible causes/consequences and M
MSolutions #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. Tyre press. monitor inoper-
ative No wheel sensors
*T
he wheels fitted do not ha vesuitable tyre pressure sensors. The tyre pressure monitoring sy stem is deactivated. #
Fit wheels with suitable tyre pressure sensors.
h
Wheel sensor(s) missing *T
here is no signal from the tyre pressure sensor of one or more wheels. Nopressure value is displa yedfo rthe
af fected tyre. #
Have thefa ulty tyre pressure sensor replaced at a qualified specialist workshop.
h Check tyre(s) *T
he tyre pressure in one or more tyres has dropped significantl y.
The wheel position is displa yed. A warning tone also sounds. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
R The tyres can bu rst.
R The tyres can wearexc essively and/or une venly.
R The driving characteristics as well as thesteering 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.542
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Switch off the engine. #
Add 1 l of engine oil (/ page 351). #
Check the engine oil le vel.
No tes on engine oil (/ page 485).
5
Engine oil pressure Stop
Switch off engine *T
he oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient oil pressure #
Avoid driving with insuf ficient oil pressure. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Consult a qualified specialist workshop.
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 549

Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
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. &
WARNING Risk of bu rns when opening the bonn et
If yo u open the bonn etwhen the engine has overheated or when there is a fire inthe engine compartment, the
fo llowing situations may occur:
R You could come into contact with hot gases.
R You could come into contact with other hot, escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the bonn etclosed and call thefire service. Display messages and
warning/indicator lamps 555

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. Do not continue
driving. #
Notethe messages on the driver displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop.
If th e coolant temp erature display is at the upper end of thete mp erature scale: #
Exit theve hicle and keep a safe dis tance 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 qualified specialist workshop. In doing so, ensure that 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 bat tery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. 556
Display messages and warning/indicator lamps

:
Switch off lights ........................... 499
: Switch on headlamps................... 499
# Switch on the engine tocharge
th e12 V battery .................................... 539
Ø Top up AdBlue Emergency op.
in XXX km See Owner's Manual............ 545
+ Top up coolant See Owner ’s
Manual................................................... 51 0
¥ Top up washer fluid ...................... 509
ï Trailer coupling in motion .............503
! Turn on the ignition torelease
th e parking brake..................................5 20
d Vehicle is operational Switch
off ignition before exiting..................... .503
É Vehicle rising Please wait............ .532
h Warning tyre defect..................... .543
h Wheel sensor(s) missing.............. 542
Ø XX,X l Top up AdBlue Emerg.
op.: max. XXX km/h Start not poss.
in XXX km .............................................. 545Ø
XX,X l Top up AdBlue Ignition
ON, wait 60s, or engine start not
possible ................................................ .546
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual ...........527
Ac tive Blind Spot Assi stinope rative ...... 527
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual .................................................. 527
Ac tive bonnet malfunction See Own‐
er's Manual........................................... 507
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ........ 536
Ac tive Brake Assi stFunctions limited
See Owner's Manual............................. 537
Ac tive Dis tance Assi stavailable again ...5 24
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual ...........523
Ac tive Dis tance Assi stinope rative ......... 524 Ac
tive Emergency Stop Assist cur‐
re ntly una vailable See Owner's Man‐
ual......................................................... 525
Ac tive Emergency Stop Assist inop‐
erative................................................... 525
Ac tive Lane Change Assi stcur rently
una vailable See Owner's Manual ...........526
Ac tive Lane Change Assi stinope ra‐
tive........................................................ 526
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ...........527
Ac tive Lane Keeping Assist inopera‐
tive........................................................ 528
Ac tive Parking Assist and
PA RKTRONIC inoperati veSee Own‐
er's Manual........................................... 533
Ac tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops...........................................5 25 Index
577

PA
RKTRONIC and manoeuv ring
assi stant not available at rear when
to wing a trailer ...................................... 532
PA RKTRONIC inoperati veSee Own‐
er's Manual........................................... 532
Place theke y in the mar ked space
See Owner's Manual............................. 497
Please teach in trailer coupling again
using the button in load compart‐
ment Waitfor it toextend/r etra ct......... 505
PRE-SAFE impulse side inoperati ve
See Owner's Manual............................. 495
PRE-SAFE inoperati veSee Owner's
Manual.................................................. 495
Re duce speed .......................................5 44
Re versing not poss. Consult workshop.. 51 5
Risk of vehicle rolling away Apply
pa rking brake topark............................. 514
Risk of vehicle rolling away Driver's
door open Transmission not in P........... .514 Risk of
vehicle rolling away N activa‐
te d manually No automatic switch to
P ............................................................ 514
Snow chain mode Maximum speed
exc eeded............................................... 507
Speed limit (winter tyres) XXX km/h ..... 524
St op vehicle Lea veengine running
Wa itTransmission cooling ......................516
To switch off the engine, press the
St art/ Stop button for at least 3 sec‐
onds or 3 times. ..................................... 51 0
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ........................ 526
Tr af fic Sign Assi stinope rative ............... 527
Tr ansmission Malfunction Stop.............. 51 5
Ty re press. monitor cur rently una vail‐
able ...................................................... .541
Ty re press. monitor inoperative.............5 41
Ty re press. monitor inoperative No
wheel sensors ...................................... .542 Ty
re(s) ove rheated................................. 544
Distance cont rol
see Active Dis tance Assi stDISTRONIC
DI STRO NIC
see Active Dis tance Assi stDISTRONIC
Door Additional door loc k................................ .81
Child saf ety lock (rear door).................... .74
Locking/unlocking (emergency key)....... 85
Opening (from inside ).............................. 82
Po we r closing function............................ 85
Un locking (from inside).......................... .82
Door cont rol panel....................................... 14
Door cont rol panel (rear) ............................ 16
Dr aw bar
see Tow- bar sy stem
Drive Away Assist ...................................... 280
Drive position Engaging............................................... 203
Drive prog ram display .............................. 200
Drive prog rams
see DYNA MIC SELECT Index
57 9