MERCEDES-BENZ S-CLASS SALOON LONG 2021 Owners Manual

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6
Left windowbag malfunc-
tion Consult work-
shop (examp le) *T
he cor responding restraint system is malfunctioning (/ page 46). &
W WARNING
ARNING Risk of injury or fatal injury due toa malfunction in the windowbag
The windowbag might be triggered unintentionally or might not be triggered at all in theev ent of an accident. #
Have the windowbag checked and repaired immediately at a quali/ed specialist workshop. Push rear left seat belt
extender back manually
See Owner's Manual
(exa m-
ple) *T
he cor responding seat belt extender is malfunctioning. #
Slide the seat belt extender back into its original position manual ly. #
Ifth e malfunction occurs again, consult a quali/ed specialist workshop.
Front passenger airbag dis-
abled See Owner's Manual *T
he front passen ger airbag has been disabled even though an adult or a person of adult build is on the front passenger
seat. If additional forc es are applied tothe seat, thewe ight the system de tects may be too lo w. &
W WARNI NG
ARNI NG‑ Risk of injury or evenfata l injury when the front passenger airbag is disabled
If th e front passenger airbag is disabled, It will not be deplo yed in theev ent of an accident and cannot per form its
intended pr otective function.
A person in the front passenger seat could then, forex ample, come into contact with theve hicle interior, especially
if th e person is sitting too close tothe dashboard. #
Beawa reofthe status of the front passenger airbag bo thbefore and during the journe y. 498
498
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Stop theve hicle immediately in accordance with the tra1c conditions. #
Make sure that no objects are trapped under the front passenger seat. #
Check the status of automatic front passenger airbag actuation (/ page 58).#
If necessar y,consult a quali/ed specialist workshop immediatel y.
Front passenger airbag ena-
bled See Owner's Manual *T
he front passen ger airbag will be enabled while theve hicle is in motion in thefo llowing situations:
R even when a child, a small adult or an object weighing less than the system weight thre shold is located on the front
passenger seat
R even when the front passenger seat is not occupied
The system may de tect objects or forc es that are adding tothewe ight applied tothe seat. &
W WARNING
ARNING Risk of injury or death when using a child restraint system while the front passenger airbag is ena-
bled
If yo u secure a child in a child restraint system on the front passenger seat and the front passenger airbag is ena-
bled, the front passenger airbag can deploy in theev ent of an accident.
The child could be struck bythe airbag. #
Ensure, bo thbefore and during the journe y,that the status of the front passenger airbag is cor rect.
NEVER use a rear wa rdfacing child restraint on a seat pro tected byan ACTIVE AIRBAG in front of it, DEATH or
SERIOUS INJURY tothe CHILD can occur. Display messages and
warning/indicator lamps
499
499

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Solutions #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Make sure that no objects are trapped under the front passenger seat. #
Check the status of automatic front passenger airbag actuation (/ page 58).#
If necessar y,consult a quali/ed specialist workshop immediatel y.
PRE-SAFE inoperative See
Owner's Manual *
The PRE‑SAFE ®
functions are malfunctioning. #
Consult a quali/ed speciali stwo rkshop.
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
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Á
Replace key *H
aveth eke yre placed. #
Consult a quali/ed specialist workshop. 500
500
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Á
Change key batteries *T
hekey battery is dischar ged. #
Replace the battery (/ page 90).
Á Key not detected (white dis-
play message) *T
hekey is cur rently unde tected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot for starting with theke y (/ page 212).
Á Key not detected (red dis-
play message) *T
hekey cann otbe de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you switch o. theve hicle:
R You can no longer start theve hicle.
R You cannot centrally lock theve hicle. #
Ensu rethat theke y is in theve hicle.
If th eke y de tection function has a malfunction due toa st rong radio signal source: #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Place theke y in the slot for starting the engine with theke y (/ page 212). Display messages and
warning/indicator lamps
501
501

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Á
Key being initialised Please
wait *T
hevehicle is processing in order to teach in the new key. #
Wait until processing is comple te.
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot for starting the engine with theke y (/ page 212). Lights Lights
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:
Left dipped beam (examp le) *T
he cor responding light source is defecti ve. #
Drive on carefull y. #
Consult a quali/ed specialist workshop immediatel y.
% LED light sources: the display message forth e cor responding light appears only when all the light-emitting diodes
in the light are faulty. 502
502
Display message
s andwarning/indicator lamps

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Malfunction See Owner's
Manual *T
heexterior lighting is malfunctioning. #
Consult a quali/ed specialist workshop.
*V Vehicles wit ehicles wit h a tr
h a trailer hitc
ailer hitc h:
h:a fuse may ha veblown. #
Stop theve hicle in accordance with the tra1c conditions. #
Check the fuses and replace them if necessary (/ page 457).
:
Automatic driving lights
inoperative *T
he light sensor for automatic driving lights is malfunctioning. #
Consult a quali/ed specialist workshop.
:
Active Light System inoper-
ative *T
he active headlamps are malfunctioning. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
503 503

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Switch on headlamps *Y
ou are driving without lo w-beam headlamps. #
Turn the light switch totheL orà position.
:
Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. #
Turn the light switch totheà position.
DIGITAL LIGHT Functions
limited *T
he DIGITAL LIGHT system is malfunctioning. The lighting system will continue towo rkeven without the functions of
th e DIGITAL LIGHT system. #
Consult a quali/ed specialist workshop.
MULTIBEAM LED Functions
limited *T
he MULTIBEAM LED system is malfunctioning. The lighting system will continue towo rk, but without the functions of
th e MULTIBEAM LED system. #
Consult a quali/ed specialist workshop.
Check dipped-beam set-
ting (left/right-side traffic) *T
he type of tra1c has been selected manuall y. #
Check the setting and change it manually if necessary (/ page 178).504 504
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Dipped-beam setting (left/
right-side traffic) Manual
adjustment only *T
he automatic headlamp con version for leT-hand/ right-han dtra1c has malfunctioned. #
Change the headlamps over manually (/ page 178).
Adaptive Highbeam Assist
Plus currently unavailable
See Owner's Manual *A
daptive Highbeam Assist Plus is tempo rarilyuna vailable.
The system limits ha vebeen reached (/ page 176).
Once the cause of the problem is no longer present, the system will be available again. The Adaptive Highbeam
Assist Plus available again displaymessage will appear. #
Drive on #
Operate the high beam manually until Adaptive High Beam Assist Plus is available again.
Adaptive Highbeam Assist
Plus inoperative *A
daptive Highbeam Assist Plus is malfunctioning. #
Drive on
or #
Stop theve hicle in accordance with the tra1c conditions and restart theve hicle. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop. #
Until then, operate the high beam manuall y.
Hazard warning lamp sys-
tem Malfunction *T
he hazard warning lamp switch is malfunctioning. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
505 505

Climat
Climat
e contr
e contr ol
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&
inoperative See Owner's
Man. *T
he stationary heater is temp orarily malfunctioning. #
When theve hicle is stationary on a le vel sur face and the engine has cooled down, make up tofour attem ptsto
switch on the stationary heater, waiting se veral minutes between each attem pt. #
Ifth e stationary heater does not switch on, consult a quali/ed specialist workshop.
% The stationary heater cann otbe activated if the outside temp erature is abo ve15°C.
& 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. 506 506
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inoperative High-voltage
battery charging incom-
plete *T
he high- voltage battery is charging. Pre-entry climate control cannot be switched on. #
Wait until thech arging process has achie ved a minimum charge.
&
Inoperative Charge high-
voltage battery *T
hecharge ofthe high-voltage battery is too lo w.Pre-entry climate control cannot be switched on. #
Char gethe high-voltage batter y.
& Pre-entry climate control
via key available again
after starting vehicle *Y
ou ha veattem pted toswitch on pre-entry climate control more than twice with theve hicle switched o.. #
Start theve hicle forte n seconds.
Pre-entry climate control is operational again. Display message
s andwarning/indicator lamps
507 507