2019 MERCEDES-BENZ S CLASS sensor

RParkthevehicle on a level surface.
RLeavethe enginerunning at idle speed.
On-board computer:
,Service.Engine Oil Level
You will see one ofthefollowing messages inthe multifunction display:
#Measuring Engine Oil Level...: measurementofthe oil level is notyet possible.Repeattherequest after a maximum of 30 minutes' driv‐ing.
#Engine Oil Level OKandthe bar displayforindicatingthe oil level inthe multifunctiondisplay is green and is between "min" and"max":the oil level is correct.
#Engine Oil Level Add 1.0 landthe bar displayfor indicatingthe oil level inthe multifunctiondisplay is orange and is below "min": add1.1 US qt (1 liter) of engine oil.
#Reduce Engine Oil Levelandthe bar displayfor indicatingthe oil level inthe multifunctiondisplay is orange and is above"max": drain
offtheexcess engine oil. Consult aqualifiedspecialistworkshop.
#For Engine Oil Level Switch Ignition On:switch onthe ignitiontocheckthe engine oillevel.
#Engine Oil Level System Inoperative: sensordefective or not inserted. Consult aqualifiedspecialistworkshop.
#Engine Oil Level System Currently Unavail.:closethe hood.
Adding engine oil
&WARNINGRisk of burns from hot com‐ponent parts inthe engine compartment
Certain components inthe engine compart‐ment can beveryhot, e.g.the engine,theradiator and parts oftheexhaust system.
#Allowthe enginetocool down and onlytouch component parts described inthefollowing.
&WARNINGRisk offireand injury fromengine oil
If engine oil comes into contact withhotcomponent parts inthe engine compart‐ment, it may ignite.
#Make surethat no engine oil is spillednexttothefiller opening.
#Allowthe enginetocool off andthor‐oughly cleanthe engine oil from compo‐nent parts beforestartingthevehicle.
*NOTEEngine damagecausedbyanincorrect oilfilter, incorrect oil or addi‐tives
#Do not use engine oils or oilfilterswhich do not correspondtothe specifi‐cationsexplicitly prescribedfortheservice intervals.
#Do not alterthe engine oil or oilfilter inordertoachievelongerchange intervalsthan prescribed.
#Do not use additives.
400Maintenance and care

Notes on cleaning and careAvoidingvehicle damage
Exterior lightingCleanthe lenses with awet sponge and mild cleaning agent,e.g. car shampoo.Only use cleaning agents or cleaning clothsthat are suitablefor plastic lenses.
SensorsCleanthe sensors inthe front andrear bumper and intheradiator grill with a soft clothand car shampoo.When using a powerwasher, maintain a minimum distance of11.8 in (30 cm).
Rear view cameraand360° CameraROpenthe camera cover withthe multimedia system(→page 231).
RUse cleanwater and a soft clothtocleanthe camera lens.
Do not use a powerwasher.
TailpipesClean with cleaning agentsrecommendedbyMercedes-Benz,particularlyinthe winter and afterwashingthevehicle.Do not use acidic cleaning agents.
Notes on care ofthe interior
&WARNINGRisk of injuryfrom plasticparts breaking off afterthe use of sol‐vent-based care products
Careand cleaning products containing sol‐vents can cause surfaces inthe cockpittobecome porous.
Whenthe airbags are deployed, plastic partsmay breakaway.
#Do not use any care or cleaning prod‐ucts containing solventstocleanthecockpit.
&WARNINGRisk of injuryor death frombleached seat belts
Bleaching or dyeing seat belts can severelyweakenthem.
This can,forexample, cause seat beltstotear orfail in an accident.
#Never bleachor dye seat belts.
41 0Maintenance and care

The systemchecksthe tire pressure andthe tiretemperature ofthe tires installed onthevehiclebymeans of a tire pressuresensor.
New tire pressure sensors, e.g. in winter tires,are automaticallytaught-in duringthefirst jour‐neytheyare used.
The tire pressure appears inthe multifunctiondisplay (→page 255).
Ifthere is a substantial pressure loss or ifthetiretemperature isexcessive,you will bewarnedinthefollowingways:
Rvia display messages (→page511)
Rviathewwarning lamp inthe instrumentcluster (→page 533)
The tire pressuremonitoring system is only anaid. It isthe driver'sresponsibilitytosetthe tirepressuretotherecommended cold tire pressuresuitableforthe operating situation. Setthe tirepressurefor cold tires using a tire pressuregauge. Notethatthe correct tire pressureforthecurrent operating situation mustfirst betaught-intothe tire pressure monitoring system.
In most cases,the tire pressure monitoring sys‐tem will automatically updatethe newreferencevalues afteryou havechangedthe tire pressure.You can, however,also updatethereferenceval‐uesbyrestartingthe tire pressure monitoringsystem manually (→page441).
System limitations
The system may be impaired or may not functioninthefollowing situations:
RIfthe tire pressure is set incorrectly
RIfthere is a sudden pressure loss caused,forexample,byaforeign object penetratingthetire
RIfthere is a malfunction causedbyanotherradio signal source
Make suretoobservethefollowing furtherrela‐ted subject:
RNotes on tire pressure (→page 435)
Checkingthe tire pressure withthe tire pres‐sure monitoring system
Requirements:RThe ignition is switched on.
On-board computer:
,Service.Tires
One ofthefollowing displaysappears:
RCurrent tire pressure of eachwheel:
RTire pressure will be displayed after driving afew minutes
RTire Pressure Monitor Active:theteach-inprocess ofthe system is notyet complete.The tire pressure are already being moni‐tored.
#Comparethe tire pressure withtherecom‐mended tire pressureforthe current operat‐
440Wheels and tires

Observethefollowing when selecting, installingandreplacing tires:
ROnly use tires and wheels ofthe same type(summer tires, winter tires, MOExtendedtires) andthe same make.
ROnly install wheels ofthe same size on oneaxle (left andright).
It is only permissibletoinstall a differentwheel size intheevent of aflat tire in ordertodrivetothe specialistworkshop.
ROnly install tires ofthe correct size ontothewheels.
RVehicles with a tire pressure monitoringsystem:All installed wheels must be equip‐ped with functioning sensorsforthe tirepressure monitoring system.
RAttemperatures below 45 °F (7 °C), use win‐ter tires or all-season tires marked M+Sforall wheels.
Winter tires bearingtheMsnowflake sym‐bol in additiontothe M+S marking providethe best possible grip in wintryroad condi‐tions.
RFor M+S tires, only use tires withthe sametread.
RObservethe maximum permissible speedforthe M+S tires installed.
Ifthis is belowthevehicle's maximum speed,this must be indicatedbyan appropriatelabel inthe driver'sfield of vision.
RBreak in new tires at moderate speedsforthefirst 60 miles (100 km).
RReplacethe tires after sixyears atthe latest,regardless ofwear.
RWhenreplacing with tires that do notfea‐turerun-flatcharacteristics:vehicles withMOExtended tires are not equipped with aTIREFIT kit atthefactory.Equipthevehiclewith a TIREFIT kit afterreplacing with tiresthat do notfeaturerun-flatcharacteristics,e.g. winter tires.
For more information on wheels and tires, con‐tact aqualified specialistworkshop.
Be suretoalso observethefollowing furtherrelated subjects:
RNotes on tire pressure (→page 435)
RTireand Loading Information placard(→page442)
RTiresize designation, load-bearing capacity,speedrating and load index (→page449)
RTirepressuretable (→page 437)
Notes onrotating wheels
&WARNINGRisk of injurythrough differ‐ent wheel sizes
Interchangingthe front andrear wheels ifthewheels or tires havedifferent dimensionsmay severely impairthe drivingcharacteris‐tics.
The wheel brakes or wheel suspension com‐ponents may also be damaged.
#Rotatefront andrear wheels onlyifthewheels and tires are ofthe same dimen‐sions.
456Wheels and tires

*NOTEBlocked spraynozzles causedbymixing windshieldwasherfluids
#Do not mix MB SummerFit and MBWin‐terFit withother windshieldwasherflu‐ids.
Do not use distilled or de-ionizedwater asthefilllevel sensor may be triggered erroneously.
Recommended windshieldwasherfluid:
RAbovefreezing point: e.g. MB SummerFit
RBelow freezing point: e.g. MBWinterFit
Forthe correct mixingratio,refertothe informa‐tion onthe antifreeze container.
Mixthewasherfluid withthe windshieldwasherfluid allyearround.
Refrigerant
Notes onrefrigerantsObservethe notes on operatingfluids(→page 468).
*NOTEDamageduetoincorrectrefriger‐ant
If a non-approvedrefrigerant is used,the cli‐mate control system may be damaged.
#Only usetherefrigerant R‑134a
*NOTEDamagetothe climate controlsystem duetoincorrectrefrigerant com‐pressor oil
#Only userefrigerant compressor oilthathas been approvedbyMercedes-Benz.
#Do not mixthe approvedrefrigerantcompressor oil with a differentrefriger‐ant compressor oil.
Workonthe climate control system may be car‐ried out onlybyaqualified specialistworkshop.All applicableregulations, aswell asSAEstand‐ard J639, must be adheredto.
1Warning symbols
2Refrigerantfilling capacity
3Applicablestandards
4PAG oil part number
5Refrigerant type
Warning symbols1adviseyou about:
RPossible dangers
RHaving serviceworkcarried out at aqualifiedspecialistworkshop
474Technical data

Display messagesPossible causes/consequences andPPSolutions
#Havethe brake systemchecked immediately at aqualified specialistworkshop.
#Drive on carefully.
#Visit aqualified specialistworkshop immediately.
'
(USA only)
M
(Canada only)
Check Brake Fluid Level
*There is insufficient brakefluid inthe brakefluidreservoir.
&WARNINGRisk of an accident duetolow brakefluid level
Ifthe brakefluid level istoo low,the braking effect andthe brakingcharacteristics may be impaired.
#Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions.Do not continue driving under any circumstances.
#Consult aqualified specialistworkshop.
#Do not add brakefluid.
#Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions. Do notcontinue driving under any circumstances.
#Do not add brakefluid.
#Consult aqualified specialistworkshop.
Radar Sensors Dirty SeeOperator's Manual
*Theradar sensor system is malfunctioning.Possible causes are:
RDirt onthe sensors
RHeavyrain or snow
484Display messages andwarning/indicator lamps

Display messagesPossible causes/consequences andPPSolutions
RExtended country driving withoutother traffic, e.g. inthe desert
Driving systems and driving safety systems may be malfunctioning ortemporarily unavailable.
Oncethe cause ofthe problem is no longer present, driving systems and driving safety systems will beavailableagain.
Ifthe display message does not disappear:
#Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions.
#Clean all sensors (→page 409).
#Restartthe engine.
%

Display messagesPossible causes/consequences andPPSolutions
Drive More Slowly*You are drivingtoofastforthe selectedvehicle level.
#In ordertoadjustthevehicle level,you must not drive at speeds greaterthan 50mph (80 km/h).
#In ordertoadjustthevehicle level during trailer operation,you must not drive at speeds greaterthan19mph(30 km/h).
Blind Spot Assist CurrentlyUnavailable See Operator'sManual
*Blind Spot Assist istemporarily unavailable.
The system limits havebeenreached (→page243).
#Drive on.Oncethe cause ofthe problem is no longer present,the system will beavailable again.
or
#Ifthe display message does not disappear,stopthevehicle while paying attentiontoroad and traffic conditionsandrestartthe engine.
#If necessary,cleantherear bumper. Ifthe bumper isextremelydirty,the sensors inthe bumper may be mal‐functioning.
Active Steering Assist Inop-erative
*ActiveSteering Assist is malfunctioning.Active Distance AssistDISTRONICremainsavailable.
#Visit aqualified specialistworkshop.
Display messages andwarning/indicator lamps493