tire pressure MERCEDES-BENZ E CLASS 2019 User Guide

Adjusting the instrument lighting
Turnbrightness control1up or down.The lighting ofthe Instrument Display and inthe control elements ofthevehicle interior isadjusted.
Menus and submenus
Functions onthe service menu ofthe on-board computer
On-board computer:
Service
Toselectthe function:swipe upwards ordownwards onthe left-handTouch Control.
Pressthe left-handTouch Control.
Functions ontheServicemenu:
RMessage memory (→page 427)
RTires:
-Restartthe tire pressure losswarningsystem (→page 392)
-Checkthe tire pressure withthe tire pres‐sure monitor (→page 390)
-Restartthe tire pressure monitor(→page 391)
RASSYST PLUS: calls upthe service due date(→page 347)
RVehicles with aWidescreen Cockpit:Cool-ant: coolanttemperature display
REngine Oil Level: engine oil level
Calling upthe Assistance Graphic
On-board computer:
Assistance
Vehicles withthe Instrument Display intheWidescreen Cockpit:whenyou havethe design settoProgressive,you can viewthe Assistance Graphic inthe left-hand areaofthe Instrument Display.
Thefollowing displaysareavailable onthe Assis‐tance Graphic menu:
RAssistance Graphic
RAttention level (→page 209)
Toswitch betweenthe displays:swipeupwards or downwards onthe left-handTouch Control.
224Instrument Display and on-board computer

Ifyouwould liketoleavethevehicle while itis beingwashed, make surethe SmartKeyislocated inthevehicle. The]gear isother‐wise automatically engaged.
If, afterthe carwash,youremovethewaxfromthe windshield and wiperrubbers,thiswill prevent smearing andreduce wipernoise.
Information on using a powerwasher
\nWARNINGRisk of accident when usinghigh-pressure cleaning equipment withround-spraynozzles
Thewater jet from around-spraynozzle (dirtgrinder) may cause damagetotires and sus‐pension componentsthat is not visible.
Components damaged inthisway mayfailunexpectedly.
Do not use high-pressure cleaningequipment withround-spraynozzlestocleanyourvehicle.
Damaged tires or suspension compo‐nents must bereplaced immediately.
Toavoid damageto yourvehicle, observethefol‐lowing when using a powerwasher:
Rkeepthe SmartKeyat least10ft(3 m)awayfromthevehicle. Otherwisethe trunk lidcould open unintentionally.
Rmaintain a distance of at least11.8 in(30 cm)tothevehicle.
Rvehicles with decorativefoil:parts ofyourvehicle are covered with a decorativefoil.Maintain a distance of at least27.6 in(70 cm) betweenthefoil-covered parts ofthevehicle andthe nozzle ofthe powerwasher.Movethe powerwasher nozzle around whilstcleaning. Thewatertemperature ofthepowerwasher must notexceed140 °F(60 °C).
Robservethe information onthe correct dis‐tance inthe equipment manufacturer's oper‐ating instructions.
Rdo not pointthe nozzle ofthe powerwasherdirectly at sensitive parts such as tires, slits,electrical components, batteries, light bulbsandventilation slots.
Washingthevehiclebyhand
Observethe legalrequirements, e.g. in a numberof countries,washingbyhand is only permittedin specially designatedwash bays.
Use a mild cleaning agent, e.g. car shampoo.
Washthevehicle with lukewarmwater usinga soft car sponge. When doing so, do notexposethevehicletodirect sunlight.
Carefully hosethevehicle off withwater anddry using achamois.Takecare nottopointthewater jet directlytowardsthe air inletgrille.
356Maintenance and care

Tires withrun-flatcharacteristics:
Observethe information andwarningnotes on MOExtended tires (run-flattires).
Intheevent of aflat tire,thefollowing optionsareavailable depending onyourvehicle's equip‐ment:
RVehicles with MOExtended tires:it is pos‐sibletocontinuethe journeyfor a shortperiod of time. Make sureyou observethenotes on MOExtended tires (run-flat tire)(→page 365).
RVehicles with a TIREFIT kit:you canrepairthe tires sothat it is possibletocontinuethejourneyfor a short period of time.Todothis,usethe TIREFIT kit (→page 366).
RVehicles with Mercedes me connect:youcan make a callforRoadside Assistance viatheoverhead control panel inthe case of abreakdown (→page313).
RAllvehicles:changethe wheel(→page 409).
Notes on MOExtended tires (run-flat tire)
\nWARNINGRisk of accident when drivingin emergency mode
When driving in emergency mode,the han‐dlingcharacteristics are impaired. e.g. whencornering, when acceleratingstronglyandwhen braking.
Do notexceedthe permissible maxi‐mum speedfor MOExtended tires.
Avoid any abruptsteering and drivingmaneuvers aswell as drivingoverobstacles (curbs, pot holes, off-road).This applies, in particular,toa loadedvehicle.
Stop driving inthe emergency mode ifyou notice:
Rbanging noise
Rvehicle vibration
Rsmoke which smells likerubber
Rcontinuous ESP®intervention
Rcracksin tire sidewalls
After driving in emergency mode havetherimscheckedbyaqualified special‐istworkshop withregardtotheir furtheruse.
The defective tire must bereplaced ineverycase.
WithMOExtended tires (run-flat tire),you cancontinuetodriveyourvehicleeven ifthere is atotal loss of pressure in one or more tires. How‐ever,the tire affected must not show any clearlyvisible damage.
You canrecognize MOExtended tiresbytheMOExtended marking which appearsonthe sidewall ofthe tire.
Vehicles with tire pressure losswarning sys‐tem:MOExtended tires may only be used in con‐junction withan activated tire pressure losswarning system.
Vehicles with tire pressure monitoring sys‐tem:MOExtended tires may only be used in con‐junction withan activated tire pressure monitor‐ing system.
Breakdown assistance365

If a pressure losswarning message appears inthe multifunction display,proceed asfollows:
RCheckthe tirefor damage.
RIf driving on, observethefollowing notes.
Driving distance possible in emergencymode after the pressure losswarning:
Load condition Driving distance pos‐sible in emergencymode
Partially laden50 miles (80 km)
Fully laden19miles (30 km)
The driving distance possible in emergencymode mayvarydepending onthe drivingstyle.Observethe maximum permissible speed of50mph (80 km/h).
If a tire has goneflat and cannot bereplacedwith an MOExtended tire,you can use astand‐ard tire as atemporary measure.
TIREFIT kitstoragelocation
The TIREFIT kit is located underthe trunkfloor.
1Tiresealant bottle
2Tireinflation compressor
Usingthe TIREFIT kit
Requirements
Requiredtools:
RTiresealant bottle
RTIREFITsticker
RTireinflation compressor
RGloves (depending onthevehicle equipment)
TIREFIT kitstorage location: (→page 366)
You can use TIREFIT tire sealanttoseal perfora‐tion damageof upto0.16in (4 mm), particularlythose inthe tire contact surface.You can useTIREFIT in outsidetemperatures downto-4 °F(-20 °C).
\nWARNINGRisk of accident when usingtire sealant.
Inthefollowing situations,the tire sealant isunabletoprovide sufficient breakdown assis‐tance, as it is unabletosealthe tire properly:
RThere are cuts or punctures inthe tirelargerthanthose previously mentioned.
RThe wheelrim is damaged.
RYou havedriven at averylow tire pres‐sure or on aflat tire.
Do not continue driving.
Consult aqualified specialistworkshop.
366Breakdown assistance

Pushthe plug of hose5intoflange6oftire sealant bottle1untilthe plug engages.
Place tire sealant bottle1head downwardsintorecess2ofthe tire inflation compres‐sor.
Removethevalve cap fromvalve7onthedefective tire.
Screwfilling hose8ontovalve7.
Insert plug4into a12V socket inyourvehicle.
Switchthe ignition on.
Press on and off switch3onthe tire infla‐tion compressor.The tire inflation compressor is switched on.The tire is inflated. First, tire sealant is pum‐ped intothe tire. The pressure may brieflyrisetoapproximately 500 kPa (5 bar/73 psi).
Do not switch offthe tire inflation compres‐sor duringthis phase.
Letthe tire inflation compressorrunfor amaximum often minutes.The tire shouldthen haveattained a tirepressure of at least 200 kPa (2.0 bar/29 psi).
If tire sealant leaks out, make sureyou cleantheaffected area asquickly as possible. It is prefera‐bletouse clearwater.
Ifyouget tire sealant onyour clothing, haveitcleaned as soon as possible with perchloroethy‐lene.
If, afterten minutes, a tire pressure of200 kPa (2.0 bar/29 psi) has not been ach‐ieved:
Switch offthe tire inflation compressor.
Unscrewthefilling hose fromthevalve ofthedefective tire.
Please notethat tire sealant may leak out whenunscrewingthefilling hose.
Driveforwards orreverseveryslowlyforapproximately 33ft(10 m).
Pump upthe tire again.After a maximum often minutesthe tirepressure must be at least 200 kPa (2.0 bar/29 psi).
\nWARNINGRisk of accident duetothespecified tire pressure not beingreached
Ifthe specified tire pressure is notreachedafterthe specified time,the tire istoo badlydamaged. The tire sealant cannotrepairthetire inthis instance.
368Breakdown assistance

Damaged tires and a tire pressurethat istoolow can significantly impair braking and han‐dlingcharacteristics.
Do not continue driving.
Consult aqualified specialistworkshop.
If, afterten minutes, a tire pressure of200 kPa (2.0 bar/29 psi) has been achieved:
Switch offthe tire inflation compressor.
Unscrewthefilling hose fromthevalve ofthedefective tire.
\nWARNINGRisk of accident from drivingwithsealed tires
A tiretemporarily sealed with tire sealantimpairs drivingcharacteristics and is notsuitablefor higher speeds.
Adaptyour drivingstyle accordinglyanddrive carefully.
Do notexceedthe maximum speedlimit with a tirethat has beenrepairedusing tire sealant.
Observethe maximum permissible speedfora tire sealed with tire sealant 50mph(80 km/h).
Affixthe upper section ofthe TIREFITstickertothe instrument cluster in a location whereit will be easilyseenbythe driver.
NOTEStaining causedbyleaking tiresealant
After use,excess tire sealant may leak outfromthefilling hose.
Therefore, placethefilling hose intheplastic bagthat containedthe TIREFITkit.
ENVIRONMENTALNOTEEnvironmentalpollution causedbyenvironmentally irre‐sponsible disposal
Tiresealant contains pollutants.
Havethe tire sealant bottle disposed ofprofessionally,e.g. at an authorizedMercedes-Benz Center.
Stow the tire sealant bottle andthe tire infla‐tion compressor.
Pullawayimmediately.
Stop driving after approximatelyten minutesandcheckthe tire pressure usingthe tireinflation compressor.The tire pressure must now be at least130 kPa (1.3 bar/19 psi).
\nWARNINGRisk of accident duetothespecified tire pressure not beingreached
Ifthe specified tire pressure is notreachedafter a brief drive,the tire istoo badly dam‐aged. The tire sealant cannotrepairthe tireinthis instance.
Damaged tires and tire pressurethat istoolow can significantly impairthe braking prop‐erties andthe handlingcharacteristics.
Do not continue driving.
Consult aqualified specialistworkshop.
In cases such asthe one mentioned above, con‐tact an authorized Mercedes-Benz Center. Or
Breakdown assistance369

call 1-800-FOR-MERCedes (inthe USA) or1-800-387-0100(in Canada).
Correctthe tire pressure if it isstill at least130 kPa (1.3 bar/19 psi). SeetheTireandLoading Information placard onthe driver'sside B‑pillar orthe tire pressuretable inthefuelfillerflapforvalues.
Toincreasethe tire pressure:switchonthe tire inflation compressor.
Toreduce the tire pressure:press pressurerelease button1nexttomanometer2.
Whenthe tire pressure is correct, unscrewthefilling hose fromthevalve ofthe sealedtire.
Screwthevalve cap ontothevalve ofthesealed tire.
Pullthe tire sealant bottle out ofthe tireinflation compressor.Thefilling hosestays onthe tire sealant bot‐tle.
Drivetothe nearestqualified specialistwork‐shop and havethe tire, tire sealant bottle andfilling hosereplacedthere.
Battery(vehicle)
Notes onthe12V battery
\nWARNINGRisk of an accident duetoworkcarried out incorrectly onthe bat‐tery
Workcarried out incorrectly onthe batterycan,forexample, leadtoa short circuit. Thiscan leadtofunctionrestrictions in safety-rel‐
evant systems,forexamplethe lighting sys‐
tem, ABS (anti-lockbraking system) or ESP®
(ElectronicStability Program). The operatingsafety ofyourvehicle may berestricted.
You could lose control ofthevehicle inthefollowing situations:
Rwhen braking
Rintheevent of abruptsteering maneuversand/or whenthevehicle's speed is notadaptedtotheroad conditions
Intheevent of a shortcircuit or a simi‐lar incident, contact aqualified special‐istworkshop immediately.
Do not continue driving.
Always haveworkonthe battery carriedout at aqualified specialistworkshop.
RFurther information on ABS (→page166)
RFurther information on ESP®(→page167)
For safetyreasons, Mercedes-Benzrecommendsthatyou onlyuse batteries which havebeentes‐ted and approvedforyourvehiclebyMercedes-
37 0Breakdown assistance

Notes on noise or unusual handlingcharac‐teristics
While driving, pay attentiontovibrations, noisesand unusual handlingcharacteristics, e.g. pullingtoone side. This may indicatethatthe wheels ortires are damaged. Ifyou suspectthat a tire isdefective,reduceyour speed immediately.Stopthevehicle as soon as possibletocheckthewheels and tiresfor damage. Hidden tire dam‐age could also be causingthe unusual handlingcharacteristics. Ifyoufind no signs of damage,havethe tires and wheelschecked at aqualifiedspecialistworkshop.
Notes onregularlyinspecting wheels andtires
\nWARNINGRisk of accident from dam‐aged tires
Damaged tires can cause tire pressure loss.
As aresult,you could lose control ofyourvehicle.
Checkthe tiresregularlyfor signs ofdamageandreplace any damaged tiresimmediately.
\nWARNINGRisk of aquaplaning duetoinsufficient tire tread
Insufficient tire tread willresult inreducedtire grip. The tire tread is no longer abletodissipatewater.
This meansthat in heavyrain or slushtherisk ofhydroplaning is increased, in particu‐lar ifvehicle speed is not adaptedtosuittheconditions.
Ifthe tire pressure istoo high ortoo low,tires mayexhibit different levels ofwear atdifferent locations onthe tire contact sur‐face.
Thus,you shouldregularlycheckthetread depth andthe condition ofthe tirecontact surface acrossthe entire widthof all tires.
Minimum tread depthfor:
RSummer tires:

Tirepressure
Notes on tire pressure
\nWARNINGRisk of accident duetoinsuf‐ficient orexcessive tire pressure
Underinflated oroverinflated tires posethefollowingrisks:
RThe tires may burst, especially astheload andvehicle speed increase.
RThe tires maywearexcessively and/orunevenly,which maygreatlyimpair tiretraction.
RThe drivingcharacteristics, aswell assteering and braking, may be greatlyimpaired.
Comply withtherecommended tirepressure andcheckthe tire pressure ofall tires includingthe spare wheelregu‐larly:
Rat least once a month
Rwhenthe loadchanges
Rbefore embarking on a longer journey
Rif operating conditionschange, e.g. off-road driving
Adjustthe tire pressure as necessary.
Driving withtire pressurethat istoo high ortoolow can:
RShortenthe service life ofthe tires.
RCause increased tire damage.
RAdversely affect drivingcharacteristics andthus driving safety,e.g. dueto hydroplaning.
\nWARNINGRisk of an accident duetoinsufficient tire pressure
Tires with pressurethat istoo low canover‐heat and burstas aresult.
In addition,theyalso suffer fromexcessiveand/or irregularwear, which can significantlyimpairthe braking properties andthe han‐dlingcharacteristics.
Avoidexcessively low tire pressures inallthe tires, includingthe spare wheel.
Tirepressure which istoo low can cause:
RTiredefects as aresult ofoverheating
RImpaired handlingcharacteristics
RIrregularwear
RIncreased fuel consumption
\nWARNINGRisk of accident fromexces‐sive tire pressure
Tires withexcessively high pressure canburstbecausetheyare damaged more easilybyhighwayfill, pot holesetc.
In addition,theyalso suffer from irregularwear, which can significantly impairthe brak‐ing properties andthe handlingcharacteris‐tics.
Avoidexcessively high tire pressures inallthe tires, includingthe spare wheel.
Excessively high tire pressure canresult in:
RIncreased braking distance
RImpaired handlingcharacteristics
RIrregularwear
386Wheels and tires

RImpaired driving comfort
RSusceptibilitytodamage
\nWARNINGRisk of accident causedbyrepeated drop in tire pressure
Ifthe tire pressure dropsrepeatedly,thewheel,valve or tire may be damaged.
Insufficient tire pressure can causethe tirestoburst.
Inspectthe tirefor signs offoreignobjects.
Check whetherthe wheel orvalve has aleak.
Ifyou are unabletorectifythe damage,contact aqualified specialistworkshop.
You canfind information on tire pressureforthevehicle'sfactory-installed tires onthefollowinglabels:
RTireand Loading Information placard ontheB‑pillar ofyourvehicle (→page 393).
RTirepressuretable onthe inside ofthe fuelfillerflap (→page 387).
Observethe maximum tire pressure(→page 399).
Use a suitable tire pressuregaugetocheckthetire pressure. The outer appearance of a tiredoes not permit anyreliable conclusion aboutthe tire pressure.
Vehicles with a tire pressure monitoring sys‐tem:You can alsocheckthe tire pressure usingthe on-board computer.
Only correct tire pressure whenthe tires arecold. Conditionsfor cold tires:
RThevehicle has been parked withthe tiresout of direct sunlightfor at least three hours.
RThevehicle has traveled lessthan 1 mile(1.6 km).
Arise inthe tiretemperature of18°F (10 °C)increasesthe tire pressurebyapprox.10kPa(0.1 bar/1.5 psi).Takethis into account whencheckingthe tire pressure ofwarmtires.
The tire pressure recommendedfor increasedload/speed inthe tire pressuretable can affecttheride comfort.
\nWARNINGRisk of accident from unsuita‐ble accessories onthe tirevalves
Ifyou mount unsuitable accessories ontotirevalves,the tirevalves may beoverloaded andmalfunction, which can cause tire pressureloss.Tirepressure monitoring systemsforretrofitting will causethe tirevalvetoremainopen. This can alsoresult in tire pressureloss.
Only screwstandardvalve caps orvalvecaps specifically approvedbyMercedes-Benzforyourvehicle ontothe tirevalve.
Tirepressure table
The tire pressuretable is onthe inside ofthefuelfillerflap.
The data shown inthe images isexampledata.
Wheels and tires387