engine MERCEDES-BENZ S-CLASS SALOON LONG 2020 Owners Manual

Display messages
Possible causes/consequences and M
MSolutions #
Untilthen, alw ays select park position jmanually before you swit choff the engine. #
Before leaving theve hicle, apply the electric parking brake.
Risk of vehicle rolling away
Driver's door open Trans-
mission not in P *
The driver's door is not fully closed and transmission position h,kor neutral iis selected.
The vehicle may rollaw ay. #
Select pa rkposition jwhen switching off theve hicle.
Risk of vehicle rolling away
Apply parking brake to park *
The transmission is malfunctioning. Park position jcann otbe selected. #
Park theve hicle safely. #
Use the electric parking brake tosecure theve hicle against rolling away. #
On gradients, turn the front wheels so that theve hicle will rollto wa rdsth eke rb if it starts moving.
Risk of vehicle rolling away
N activated manually No
automatic switch to P *
While theve hicle was at a standstill or driving at very low speed, neut rali was engaged with the engine running
or the ignition switched on.
* NO
TEDama getotheve hicle due toitro lling away When
the ignition is being switched off or the driver's door opened, automatic engagement of park position j
is deactivated.
The vehicle may rollaw ay. #
Beready tobrake. #
Do not lea vetheve hicle unattended. 514
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
For all other transmission positions, park theve hicle safely. #
Consult a qualified specialist workshop.
Stop vehicle Leave engine
running Wait Transmission
cooling *T
he transmission is overheating. Pulling away may be temp orarily impaired or not possible. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Lea vethe engine running. #
Wait until the display message disappears before pulling away.
Auxiliary battery malfunc-
tion *T
here is a malfunction in the auxiliary batter y. #
Consult a qualified specialist workshop. #
Untilthen, alw ays select park position jmanually before you swit choff the engine. #
Before leaving theve hicle, apply the electric parking brake. 516
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
! Turn on the ignition to
release the parking brake *
The red! indicator lamp is lit.
Yo u ha veattem ptedto release the electric parking brake with the ignition switched off. #
Switch on the ignition.
J Brake immediately *A
malfunction has occur red while the HOLD function was activated.
A horn may also sound at regular inter vals.
Yo u cannot start the engine. #
Immediately depress the brake pedal firm lyuntil the display message disappears.
Yo u can restart the engine.
J
Check brake fluid level *T
here is insuf ficient brake fluid in the brake fluid reser voir. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. 520
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Traffic Sign Assist inopera-
tive *T
raffic Sign Assist is malfunctioning. #
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.
Active Blind Spot Assist
currently unavailable See
Owner's Manual *A
ctive Blind Spot Assi stistemp orarily una vailable.
The sy stem limits ha vebeen reached (/ page 251).
Once the cause of the problem is no longer present, the sy stem will be available again. #
Drive on.
or #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine.
Active Blind Spot Assist
inoperative *A
ctive Blind Spot Assi stis malfunctioning. #
Consult a qualified specialist workshop.
Active Blind Spot Assist
not available when towing
a trailer See Owner's Man-
ual *W
hen you es tablish the electrical connection tothe trailer, Active Blind Spot Assi stwill be una vailable. #
Press the left-hand Touch Control and ackn owledge the display message.
Active Lane Keeping Assist
currently unavailable See
Owner's Manual *A
ctive Lane Keeping Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limits (/ page 255). Display messages and
warning/indicator lamps 527

Display messages
Possible causes/consequences and M
MSolutions
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again. #
Drive on.
Active Lane Keeping Assist
inoperative *A
ctive Lane Keeping Assist is malfunctioning. #
Consult a qualified specialist workshop.
¸
ð
ç
Ä Currently unavailable
Radar dirty *F
ront and corner radar sensors and/or lidar (hereaf ter "senso rs") are malfunctioning. Possible causes:
R The sensors are dirty
R Heavy rain or snow
R Extended country driving wi thout other traf fic, e.g. in the desert
Driving sy stems and driving saf ety sy stems may be malfunctioning or temp orarily una vailable. The brake sy stem,
st eering and drive sy stem will continue tofunction normal ly. #
Drive on.
Once the causes of the problem are no longer present, the driving sy stems and driving saf ety sy stems will be avail‐
able again and the cor responding symbols will be switched off.
If th e display message does not disappear: #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean all sensor co vers from outside (/ page 220). #
Restart the engine. 528
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
á
ð
Ä
¬
Ô currently unavailable Cam-
era dirty *T
he view of the multifunction camera is restricted. Possible causes:
R Dirt on the windscreen in thefield of vision of the multifunction camera
R Heavy rain, snow or fog
R Mist on the inside of the windscreen: in cer tain we ather conditions, mist can form onthe inside of the wind‐
screen during cold times of year in particular.
% This mist on the windscreen is remo ved automatically within a short time with the aid of a heater. The restric‐
tion is temp orar y.
Driving sy stems and driving saf ety sy stems may be malfunctioning or temp orarily una vailable. The brake sy stem,
st eering and drive sy stem will continue tofunction normal ly. #
Drive on.
Once the causes of the problem are no longer present, the driving sy stems and driving saf ety sy stems will be avail‐
able again and the cor responding symbols will be switched off.
If th e display message does not disappear: #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean the windscreen, especially in the position of the multifunction camera (/ page 220). #
Restart the engine.
Driver camera view cur-
rently restricted See Own-
er's Manual *T
he visibility of the driver camera is reduced. Possible causes:
R Objects or sticke rs are projecting into the driver camer a’sfield of vision. Display messages and
warning/indicator lamps 529

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
Active Parking Assist and
PARKTRONIC inoperative
See Owner's Manual *A
ctive Parking Assist and Parking Assist PARKTRONIC are 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. Driving saf
ety sy stems Display messages
Possible causes/consequences and M MSolutions
!
÷ currently unavailable See
Owner's Manual *
ABS and ESP ®
are temp orarily una vailable.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be temp orarily una vailable.
The brake sy stem will continue tooperate normally. Braking dis tance may increase in an emergency braking situa‐
tion. &
WARNING Risk of skidding if ABS and ESP ®
are malfunctioning
The wheels may lock du ring braking and ESP ®
does not pe rform any vehicle stabilisation.
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. Display messages and
warning/indicator lamps 533

Display messages
Possible causes/consequences and M
MSolutions
T
!
÷ inoperative See Owner's
Manual *
EBD, ABS and ESP ®
are malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. &
WARNING Risk of skidding if EBD, ABS and ESP ®
are malfunctioning
The wheels may block du ring braking and ESP ®
does not pe rform any vehicle stabilization.
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. Active Brake Assist Func-
tions currently limited See
Owner's Manual *
Ve hicles with the Driving Assistance Package or Blind Spot Assis t:Ac tive Brake Assi stwith cross-traf fic func‐
tion, Evasi veSteering Assist or PRE‑SAFE ®
PLUS are temp orarily una vailable or only partially available.
The ambient conditions are outside the sy stem limits (/ page243). #
Drive on.
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again. #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine. 536
Display messages and warning/indicator lamps

Battery
Displ
aymessages
Possible causes/consequences and M
MSolutions
# 12 V on-board electrical
system Visit workshop *T
he12 V on-board electrical sy stem is malfunctioning. #
Consult a qualified specialist workshop immediatel y.
#
Stop vehicle See Owner's
Manual *T
he12 V battery is no longer being charge d and thech arge leve l is too lo w.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Switch off the engine. #
Consult a qualified specialist workshop. 538
Display messages and warning/indicator lamps