2020 MERCEDES-BENZ S-CLASS check engine

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
Tires Overheated *A
tlea st one tireisov erheating. Theaffect ed tires ared ispl ay ed inred. At temp eratur esclose tothel imit value, the
tir es ared ispl ay ed inyello w. #
Drivem ores lowl y.
Decre aseS peed *A
tlea st one tireisov erheating. Theaffect ed tires ared ispl ay ed inred. At temp eratur esclose tothel imit value, the
tir es ared ispl ay ed inyello w. &
WARNIN GRisk ofan acci dent from drivi ng with ove rheat edtires
Ov erheat edtires ma yburst,p artic ular lyat high speeds. #
Reduce speed sothat thet ires cool down. #
Reduce speed sothat thet ires cool down. Engine
oil Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
00B3 Check Engine OilAtNext
Refueling *T
heengine oilleve lh as dropped tothem inimum leve l.
* NO
TEEngi nedama gecau sed bydriving withinsuf ficie ntengi neoil #
Avoid long journeys wit hinsufficie ntengi neoil. 538
Displaym essages and warning/ indic ator lam ps

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions #
Chec kthe engine oilleve lw hen next refuel ing.
Ad de ngin eoil(/ page412).
No teso ne ngine oil(/ page484).
00B3
Check Engine OilLevel
(Add 1quart) *D
ispla ymessageo nlyf or cer taine ngines:
The engineoilleve lhas dropped tothem inimum leve l.
* NO
TEEngi nedama gecau sed bydriving withinsuf ficie ntengi neoil #
Avoid long journeys wit hinsufficie ntengi neoil. #
Whe nnextrefueling, add1.1U Sqt(1l )o fengine oil(/ page412).
No teso ne ngine oil(/ page484).
00B3
Engine OilRedu ceOil Level *D
ispla ymessageo nlyf or cer tain engin es:
The engin eoille ve list oo high.
* NO
TEEngi nedama gecau sed bydriving withe xcess engine oil #
Avoid long journeys wit he xcess engi neoil. #
Consul taq ualifiedspec ialistworks hop immediat elya nd have thee ngine oilleve lreduced. Displa
ymessag esand warning/ indic ator lam ps 539

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Consult aqualif iedspec ialistworks hop.
or #
Exit thev ehicle andkeep asafed ista nce from itunti lthe engine hascooled down. #
Chec kthe coolant leve l(/ pag e413). #
Mak esuret hat thea irsupply tother adiat orisno timp aired. #
Avoiding highloads onthee ngine, drivet ot he near estq ualif iedspec ialistworks hop. Indoing so,ensur ethat the
cool anttemp eratur edispla yremain sbelo wt he reda rea.
00B9 En gine diagnosis warning
lam p The
yello wC heckEngine warning lam pislitwhile thee ngine isrunning .
*A malfunctio nhasoccu rred inthee ngine, thee xhau stsystem orthef uel system.
The emission limitvalues maybee xceed edand thee ngine maybeine mer gency mod e.
In som estates, leg alrequ iremen tsstipulat ethat youm ustimm ediat elyc onsul taq ualifiedspec ialistworks hop as
soon asthey ello wC heckEngine warning lam plight sup. #
Have thev ehicle checkeda ssoon aspossible ataq ualif iedspec ialistworks hop.
003D Electr icalmalfunction warn‐
ing lam p The
rede lect rical mal functi onwarning lam pislit.
*T her eisam alfunction inthee lectr ics. #
Obser vethem essag eson them ultifunc tiondispla y. 54
6
Dis play messa gesa nd warning/ indic ator lam ps

00BD
CheckCoolan tLeve lSee Oper‐
at or's Manual ...................................... 505
00B3 CheckEngine OilAtNe xtRe fu‐
eli ng ...... .............................................. 538
00B3 CheckEngi neOilL evel (Add 1
qu art) .................................................. 539
0049 CheckLeftL ow Beam (exa m‐
ple) ...................................................... 498
0077 CheckTires ................................ 536
00B2 CheckWashe rFluid ...................5 05
ÿ Coolant TooH otStop Vehicle
Tu rn Engi neOff............ ........................ 506
0025 Current lyUn available See
Operat or'sM anual ...............................5 27
00E5 Currentl yU navailable See
Opera tor's Manua l...... .........................529
Á Don't Forget Your Key................ 498
00B3 Engin eO ilLe velC ann otBe
Mea sured <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 541 00B3
EngineOilL eve lLow Stop Vehi‐
cle Turn Engi neOff............ ..................540
00B3 EngineOilP ress ureS top
Switc hOffEngin e................................ 540
00B3 EngineOilR educe OilLevel........ 539
0075 Front LeftM alfunction Service
Re quired (exa mp le) .............................4 93
00B6 FuelLevelL ow ............................ 507
00B6 GasCap Loose ...........................5 07
0025 Inoper ativeSeeOper ator's
Manua l..... ...........................................5 28
00E5 Inoper ativeSeeOper ator's
Manu al....... ......................................... 529
007A Inoper ativeSeeOper ator's
Manu al....... ......................................... 530
0053 Inoper ative....... .......................... 532
0049 Intell.L igh tSystemI noperativ e
... ... .......................................................5 00
Á KeyN otDe tected (red displ ay
messa ge).............................................4 97 Á
KeyN otDe tected (whit ed is‐
pl ay messa ge)...................................... 497
0075 LeftSide Curtain Air bag Mal‐
func tion Service Required (exa mp le) ...4 94
¢ Lowe ring <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> .............518
ä Malfunction Drivea tM ax. 50
mp h..................................................... 517
0049 Malfunction SeeOper ator ’s
Manual ................................................ 499
¢ Max.Speed 22mph...................5 20
Á ObtainaN ewKey.......................4 96
ç Off....... .......................................526
00D9 Off....... .......................................525
0049 Parking Brak eS eeOpera tor's
Manua l...... ...........................................5 11
0077 Please Correct Tire Pressur e...... 537
0049 Please Release Parking Brak e.....5 14
Á Replace KeyB atte ry <0011001100110011001100110011001100110011001100110011001100110011
001100110011> 497
003D SeeOperator's Manua l..... ......... 533
005D Shif tto' P' ...................................... 509 566
Index