2020 MERCEDES-BENZ S-CLASS Owner's Manual

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
Ap erson inthef ront passeng erseat could then, fore xamp le,com eintoc ontact with thev ehicle's interior ,
especially ifth ep erson issitt ing tooc lose tothec ockpit. #
Mak esure, bo th bef orea nd dur ing thej our ney,that thes tatus ofthef ront passeng erairbag iscor rect. #
Stop thev ehicle immediat elyinaccor dance withthe traf ficc ondi tions . #
Checkt he status ofthea utomatic front passeng erairbag actuation (/page45). #
Ifneces sary,consu ltaq ualif iedspec ialistworks hop immediat ely.
Front Passeng erAirb ag
Enabl edSee Operator 's
Manu al *T
hefront passeng erairbag isenabled whilethev ehicle isin mo tion:
R evenw henac hild, aperson ofsmall statur eorano bject weighin gless than thes ystemw eight thre shold is
locat edon thef ront passeng erseat
R even when thef ront passeng erseat isno to ccupied
The system maydetect objects orforc es that area ddin gtot he weight applied tothes eat. &
WARNIN GRisk ofinju ryor fata linj ur yi fac hildrestra int system isused while thef ront passeng erfront
airbag isenabled
If yo us ecureac hildinac hild restra int system onthef ront passeng erseat andthef ront passeng erairbag is
enabled, thef ront passeng erairbag candeplo yint he eve ntofan acci dent.
The child could bestru ck bythea irbag. #
Ensur e,bo th bef orea nd dur ing thej our ney,that thes tatus ofthef ront passeng erairbag iscor rect. Disp
laym essages and warning/ indic ator lam ps 495

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
NEVE Rusearear wardfacing child restra int onaseat protect edbyan ACTIVE AIRBAGinfront ofit,DE ATHo r
SERIOU SINJU RYtotheC HILD canoccur . #
Stop thev ehicle immediat elyinaccor dance withthe traf ficc ondi tions . #
Checkt he status ofthea utomatic front passeng erairbag actuation (/page45). #
Ifneces sary,consu ltaq ualif iedspec ialistworks hop immediat ely.
PRE-S AFEInoperat iveSee
Operator's Manual *
The PRE‑S AFE®
funct ionsarem alfunct ioning. #
Consult aqualif iedspec ialistworks hop. Smar
tKey Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
Á Obtain aNew Key *T
heSmar tKey nee dstobe replaced. #
Consult aqualif iedspec ialistworks hop. 496
Displa ymessag esand warning/ indic ator lam ps

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
Á Replace KeyBattery *T
heSmar tKey batt eryi sd ischar ged. #
Replace theb attery( /pag e66).
Á Key NotDetected (whit e
displa ymessag e) *T
heSmar tKey iscur rentl yu ndetect ed. #
Chang ethe location oftheS mar tKey inthev ehicle. #
Ifth eS mar tKey isstill no trecog nized, placeitin them arke ds pace fors tartin gw itht he Smar tKey
( / pag e173).
Á
Ke yN otDete cted (red dis‐
pl ay messa ge) *T
heSmar tKey canno tbed etect edand maynolong erbe inthev ehicle.
The Smar tKey isno long erinthev ehicle andyous wit ch offt he engine:
R Youc an no longers tart thee ngine.
R Youc anno tc entrall yloc kt he vehicle. #
Ensur ethat theS mar tKey isin thev ehicle.
If th eS mar tKey detection functi onhasam alfuncti onduet oas trong radio signal source: #
Stop thev ehicle immediat elyinaccor dance withthe traf ficc ondi tions . #
PlacetheS mar tKey inthem arke ds pace fors tartin gt he engine withthe Smar tKey (/ pag e173). Displ
aymessa gesa nd warning/ indic ator lam ps 49
7

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
Place theKey inthe
Marked SpaceSeeOpera-
tor's Manual *S
mar tKey detection ismal functi oning. #
Chang ethe location oftheS mar tKey inthev ehicle. #
Place theS mar tKey inthem arke ds pace fors tartin gt he engine withthe Smar tKey (/ pag e173).
Á
Don't Forget YourKey *A
warning tone also sou nds. Thism essage reminds yout ot akey our keyw ithy ou when youl eave thev ehicle. Lights
Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisfaulty . #
Driveo ncarefull y. #
Con sult aqualif iedspec ialistworks hop immediat ely.
% LED lightbulbs: thed ispla ymessag efor thec orresponding lampappea rsonl yw hen allthel ight-emitt ingdiodes
in thel am parefaulty . 498
Displaym essag esand warning/ indic ator lam ps

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Malfunct ionSee Opera-
tor’s Manual *T
heexterior lighting ismalfunct ioning. #
Consult aqualif iedspec ialistworks hop.
0049 Automatic HeadlampMode
Inoperative *T
helight sensor ismalfunctionin g. #
Consult aqualif iedspec ialistworks hop.
0049 Act ive Headla mpsInopera-
tive *T
heactiv eheadla mpsaremalfunctioning. #
Consult aqualif iedspec ialistworks hop.
0049 Switch OnHeadla mps *Y
ouared riving without low- beam headlam ps. #
Turn thel ight switc htot he 0058 or0058 position. Displa
ymessag esand warning/ indic ator lam ps 499

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Switc hOffLights *Y
ouarel eaving thev ehicle andthel ights ares tills witc hed on. #
Turn thel ight switc htot he 0058 position.
0049 Int ell. Light System Inoper-
ative *T
heIntellig entLight System isfaulty .The light ingsystem continues tofunction proper lywit hou tthe function sof
th eI ntellig entLight System. #
Consult aqualif iedspec ialistworks hop.
Adaptive Highbeam Assist
Currently UnavailableSee
Operator's Manual *A
dap tiveH ighbeam Assistist em por arilyu navailable.
The system limits have been reac hed (/page153). #
Driveo n.
Once thec ause ofthep roblem isno long erpresent ,the system will beavailable again. TheAdap tiveH ighbeam
As sist Now Available displaymessag ew illappear .
Adap tiveH ighbeam Assist
In oper ative *A
daptiveH ighbeam Assistism alfunc tioning. #
Consult aqualif iedspec ialistworks hop.
Adaptive Highbeam Assist
Camera ViewRestricted
See Operator's Manual *T
hecamer aviewi srestrict ed. Possible causes are:
R Dirtonthe windshield inthec amer a'sfield ofvision 500
Displa ymessag esand warning/ indic ator lam ps

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
R Hea vyrain, sno worfog
Dr ivin gs ystems anddriving safetys ystems maybem alfunct ioningortemp orarilyu navailable.
Onc ethe cause ofthep roblem isno long erpresent ,the driving systems anddriving safetys yst ems willbeavailable
ag ain.
If th ed ispla ymessag edoes notd isappear : #
Pull overand stop thev ehicle safely assoon aspossible, paying attention toroad and traf ficc ondi tions . #
Clea nt he windshield .
Hazard Warning Flashers
Malfunctioning *T
hehazar dwarning lampswitc hism alfun ctionin g. #
Consult aqualif iedspec ialistworks hop. Climat
econtr ol Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
Air Condition ingMalfunc-
tion SeeOperator' sManual *O
peration ofthec limat econtrol system istemp orarily restrict ed. Airflow and fresh airsuppl yaresettoa utomat ic
mode . #
Have thec limat econtrol system checkeda taq ualifiedspec ialistworks hop.
Let fresh airinto thevehi-
cle interior. AirCondition-
ing Malf. VisitWorkshop *T
heclimat econt rols ystemi sm alfunct ioning. Displa
ymessag esand warning/ indic ator lam ps 50
1

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions &
WARNIN GRisk ofinju ryand acciden tdue toan insufficie ntsupply offresh air
If th ec limat econtrol system ismalfunct ioning,carbon dioxide leve ls ma yinc rease inthev ehicle interior .
Br eat hing incarbon dioxide maycause dizziness. #
Open thew indo wtoe nsur ethat ther ei sas ufficie ntsupply offresh air. #
Open thew indo wtoe nsur eana deq uatesuppl yoffresh air. #
Consult aqualif iedspec ialistworks hop immediat ely. Ve
hicl e Dis
playm essag es
Possible causes/conseq uencesand0050 0050
Solutions
0072 Vehicle ReadytoDrive
Switc hthe Ignit ionOff
Before Exiting *Y
ouarel eaving thev ehicle whenitis in ar eady -to-dr ives tate. #
When youl eave thev ehicle, switchoffthei gnition ,secur ethe vehicle agains trolling away and takethe Smar t‐
Ke yw ithy ou. #
Ifyo ud on otlea vethev ehicle, switchoffthee lectr icalconsumer s,e.g. thes eat heating. Other wise, the1 2V
batt erym aydisc hargeand itwill then be possible tostar tt he vehicle onlyw itht he aid ofas econ dbattery
(s ta rting assis tance) . 50
2
Disp laym essage sa nd warning/ indic ator lam ps