2019 MERCEDES-BENZ C CLASS warning

Notes onrotating wheels
\nWARNINGRisk 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.
Thewear patterns onthe front andrear wheelsdiffer:
RFront wheelswear more onthe shoulder ofthe tire
RRear wheelswear more inthe center ofthetire
Onvehiclesthat havethe same size front andrear wheels,rotatethe wheels accordingtotheintervals inthe tire manufacturer'swarranty
book inyourvehicle documents. Ifthis is notavailable,rotatethe tiresevery3,000to6,000 miles (5,000to10,000 km),depending onthewear. Ensurethatthe directionofrotation is maintained.
It is imperativetoobservethe instructions andsafety notes on "Changing a wheel" when doingso Preparingthevehiclefor a wheelchange(page415).
Notes onstoring wheels
Whenstoring wheels, observethefollowingnotes:
RAfterremoving wheels,storethem in a cool,dry and preferably dark place.
RProtectthe tires from contact withoil, greaseor fuel.
Overview ofthe tire-changetool kit
Mercedes-AMGvehicles:observethe notes inthe Supplement. Otherwise,you mayfailtorec‐ognize dangers.
Apartfrom some country-specificvariants,vehi‐cles are not equipped with a tire-changetool kit.For more information on whichtire-changetoolsarerequired and approvedfor performing awheelchange onyourvehicle, consult aqualifiedspecialistworkshop.
Yourequirethefollowingtools,for instance,tochange a wheel:
RJack
RChock
RLug wrench
RAlignment bolt
The tire-changetool kit is located underthetrunkfloor.
414Wheels and tires

RThe jack must be placed on afirm,flat andnon-slip surface. If necessary,use a large,flat, load-bearing, non-slip underlay.
RThefootofthe jack must be positionedverti‐cally underthe jack support point.
Rules of conduct whenthevehicle israised:
RNever placeyour hands orfeetunderthevehicle.
RNever lie underthevehicle.
RDo notstartthe engine and do notreleasethe electric parking brake.
RDo not open or close any doors orthe trunklid.
Usingthe lug wrench, loosenthe wheel boltsonthe wheelyou wishtochangebyaboutone full turn. Do not unscrewthe bolts com‐pletely.
Position of jack support points
Mercedes-AMGvehicles:observethe notes inthe Supplement. Otherwise,you mayfailtorec‐ognize dangers.
\nWARNINGRisk of injuryfrom incorrectpositioning ofthe jack
Ifyou do not positionthe jack correctly atthe appropriate jacking point ofthevehicle,the jack could tip withthevehicleraised.
Only positionthe jack atthe appropri‐ate jacking point ofthevehicle. Thebase ofthe jack must be positionedver‐
Wheels and tires417

Screwalignment bolt1instead ofthewheel bolt intothethreading.
Unscrewtheremaining wheel bolts fully.
Removethe wheel.
Installthe new wheel (page419).
Mounting a new wheel
Requirements:RThe wheel isremoved (page418).
Mercedes-AMGvehicles:observethe notes inthe Supplement. Otherwise,you may notrecog‐nize dangers.
\nWARNINGRisk of accident from losing awheel
Oiled, greased or damaged wheel bolt/wheelnutthreads or wheel hub/wheel mountingboltthreads can causethe wheel bolts/wheel nutstocome loose.
As aresult,you could lose a wheel while driv‐ing.
Never oil or greasethethreads.
Intheevent of damagetothethreads,contact aqualified specialistworkshopimmediately.
Havethe damaged wheel bolts or dam‐aged hubthreadsreplaced.
Do not continue driving.
Observethe information onthechoice oftires (page411).
For tires with a specified direction ofrotation, anarrowonthe sidewall ofthe tire indicatesthecorrect direction ofrotation. Observethe direc‐tion ofrotation when installing.
Slidethe wheeltobe mounted ontothealignment bolt and push it on.
\nWARNINGRisk of injuryfrom tighteningwheel bolts and nuts
Ifyou tightenthe wheel bolts or wheel nutswhenthevehicle israised,the jack could tip.
Only tighten wheel bolts or wheel nutswhenthevehicle is onthe ground.
Be suretoobservethe instructions andsafety notes on "Changing a wheel"(page411).
For safetyreasons, onlyuse wheel boltswhich havebeen approvedbyMercedes-Benz andforthe wheel inquestion.
NOTEDamagetopaintwork ofthe wheelrim when screwing onthefirst wheel bolt
Ifthe wheel hastoo much play when screw‐ing inthefirst wheel bolt,the wheelrim paintcan be damaged.
Wheels and tires419

Pressthe wheelfirmlyagainstthewheel hub when screwing onthefirstwheel bolt.
Tightenthe wheel boltsevenly in a diagonalpattern inthe order indicated untiltheyarefinger-tight.
Unscrewthe alignment bolt.
Tightenthe last wheel bolt until it isfinger-tight.
Lowerthevehicle (page 420).
Loweringthevehicle after a wheelchange
Requirements:RThe new wheel has been installed(page419).
Tolower thevehicle:turnthe crank ofthejack counter-clockwise untilthevehicle isonce againstandingfirmlyonthe ground.
Tightenthe wheel boltsevenly in a diagonalpattern inthe order indicated (1to5).Specified tighteningtorque:96 lb-ft(130 Nm).
\nWARNINGRisk of injurythrough incor‐rect tighteningtorque
The wheelscould come loose ifthe wheelbolts or wheel nuts are not tightenedtotheprescribed tighteningtorque.
Makesurethe wheel bolts or wheelnuts are tightenedtothe prescribedtighteningtorque.
Ifyou are not sure, do not movethevehicle. Consult aqualified specialistworkshop and havethe tighteningtor‐quechecked immediately.
Checkthe tire pressure ofthe newly moun‐ted wheel and adjust accordingly.
Vehicles with tire pressure losswarningsystem:Restartthe tire pressure losswarn‐ing system (page 398).
Vehicles with a tire pressure monitoringsystem:Restartthe tire pressure monitoringsystem (page 397).
Make suretoobservethefollowing furtherrela‐ted subject:
RNotes on tire pressure (page 392)
420Wheels and tires

Notes ontechnical data
Mercedes-AMGvehicles:be suretoobservethe notes inthe Supplement. Otherwise,youmayfailtorecognize dangers.
The datastated onlyappliestovehicles withstandard equipment.You can obtain furtherinformation from an authorized Mercedes-BenzCenter.
Vehicle electronics
Two-wayradios
Notes on installing two-wayradios
\nWARNINGRisk of accident duetoimproperworkon two-wayradios
The electromagneticradiation from two-wayradios can interferewiththe on-board elec‐tronics if RF transmittersare manipulated orretrofitted incorrectly.
This could jeopardizethe operating safety ofthevehicle.
You should haveallworkon electricaland electronic components carried outat aqualified specialistworkshop.
\nWARNINGRisk of accident from incor‐rect operation of two-wayradios
Ifyou operate two-wayradios incorrectly inthevehicle,the electromagneticradiationcould interferewiththe on-board electronics,e.g.:
Rifthe two-wayradio is not connectedtoanexterior antenna
Riftheexterior antenna is not correctlymounted or is not of lowreflection
This could jeopardiesthe operating safety ofthevehicle.
Havethe low-reflectionexteriorantenna installed at aqualified special‐istworkshop.
When operating two-wayradios inthevehicle, always connectthemtothelow-reflectionexterior antenna.
NOTEInvalidation ofthe operating per‐mit duetofailuretocomply with theinstructionsfor installation and use
The operating permit may be invalidated ifthe instructionsfor installation and use oftwo-wayradios are not observed.
Only use approved frequency bands.
Observethe maximum permissible out‐put power inthese frequency bands.
Only use approved antenna positions.
Technical data421

Operatingfluids
Notes on operatingfluids
Mercedes-AMGvehicles:be suretoobservethe information inthe Supplement. Otherwise,you mayfailtorecognize dangers.
\nWARNINGRisk of injuryfrom operatingfluids harmfulto your health
Operatingfluids may be poisonous and harm‐fulto your health.
Observethetext onthe original con‐tainers when using,storing or disposingof operatingfluids.
Alwaysstore operatingfluids sealed intheir original containers.
Alwayskeepchildrenawayfrom operat‐ingfluids.
ENVIRONMENTALNOTEEnvironmentalpollution causedbyenvironmentally irre‐sponsible disposal
Dispose of operatingfluids in an envi‐ronmentallyresponsible manner.
Operatingfluids includethefollowing:
RFuels
RLubricants
RCoolant
RBrakefluid
RWindshieldwasherfluid
RClimate control systemrefrigerant
Only use products approvedbyMercedes-Benz.Damage causedbythe use of productsthat havenot been approved is not coveredbytheMercedes-Benzwarranty or goodwillgestures.
You can identify operatingfluids approvedbyMercedes-Benzbythefollowing inscriptions onthe container:
RMB-Freigabe (e.g. MB-Freigabe 229.51 )
RMB-Approval (e.g. MB-Approval 229.51)
Further information on approved operatingfluidsisavailable atthefollowing locations:
Rinthe Mercedes-Benz SpecificationsforOperating Fluidsbyenteringthe designation
-at http://bevo.mercedes-benz.com
-inthe Mercedes-Benz BeVo App
Rat aqualified specialistworkshop
\nWARNINGRisk offireorexplosion fromfuel
Fuels are highlyflammable.
Fire, openflames, smoking and creationof sparksmust beavoided.
Switchoffthe ignition and, ifavailable,thestationary heater, before and whilerefuelingthevehicle.
\nWARNINGRisk of injuryfrom fuels
Fuels are poisonous and hazardousto yourhealth.
Technical data425

NOTEEngine damagecausedbyanincorrect oilfilter, incorrect oil or addi‐tives
Do not use engine oils or oilfiltersotherthanthose which meetthe specifica‐tions necessaryforthe prescribedservice intervals.
Do not alterthe engine oil or oilfilter inordertoachievelongerchange intervalsthan prescribed.
Do not use additives.
Havethe engine oilchanged aftertheprescribed intervals.
Mercedes-Benzrecommendsthatyou havetheoilchange carried out at aqualified specialistworkshop.
Further information on engine oil and oilfilters isavailable atthefollowing locations:
RInthe Mercedes-Benz SpecificationsforOperating Fluidsbyenteringthe designation:
-Athttp://bevo.mercedes-benz.com
-Inthe Mercedes-Benz BeVo app
Rat aqualified specialistworkshop
Quality and capacity of engine oil
MB-Freigabe or MB-Approval
Gasoline engine MB-Freigabe or MB-Approval
All models229.51,229.52,229.61,229.71
Thefollowingvaluesrefertoan oilchange,includingthe oilfilter.
Replacement amount
ModelReplacementamount
C 3007.0 US qt (6.6 liters)
C 300 4MATIC 6.3 US qt (6.0 liters)
Notes on brakefluid
Observethe notes on operatingfluids(page 425).
\nWARNINGRisk of an accident duetovapor pocketsforming inthe brake sys‐tem
The brakefluid constantly absorbs moisturefromthe air. This lowersthe boiling point ofthe brakefluid. Ifthe boiling point istoo low,vapor pockets mayforminthe brake systemwhenthe brakes are applied hard.
This causesthe braking effecttobeimpaired.
Havethe brakefluidrenewed atthespecified intervals.
Havethe brakefluidregularlyreplaced at aqualified specialistworkshop.Only use brakefluid approvedbyMercedes-BenzaccordingtoMB-Freigabe or MB-Approval 331.0.
You can obtain further information on brakefluidinthefollowing places:
Rinthe Mercedes-Benz SpecificationsforOperating Fluids
-at http://bevo.mercedes-benz.com
-inthe Mercedes-Benz BeVo App
428Technical data

Rat aqualified specialistworkshop
Coolant
Notes on coolantObservethe notes on operatingfluids(page 425).
\nWARNING‑ Risk offireand injury fromantifreeze
If antifreeze comes into contact withhotcomponent parts inthe engine compart‐ment, it may ignite.
Allowthe enginetocool down beforeadding antifreeze.
Makesurethat no antifreeze spills outnexttothefiller opening.
Thoroughly clean off any antifreezefrom component parts beforestartingthevehicle.
NOTEDamagecausedbyincorrect cool‐ant
Only add coolantthat has been pre‐mixed withtherequired antifreeze pro‐tection.
Information on coolant isavailable atthefol‐lowing locations:
RInthe Mercedes-Benz SpecificationforOperating Fluids310.1
-Athttp://bevo.mercedes-benz.com
-Inthe Mercedes-Benz BeVo app
RAtaqualified specialistworkshop
NOTEOverheating at high outsidetem‐peratures
If an inappropriate coolant is used,theengine cooling system is not sufficiently pro‐tected againstoverheating and corrosion athigh outsidetemperatures.
Always use coolant approvedbyMercedes-Benz.
Observethe instructions intheMercedes-Benz Specificationsfor Oper‐ating Fluids310.1.
Havethe coolantregularlyreplaced at aqualifiedspecialistworkshop.
The proportion of corrosion inhibitor/antifreezeconcentrate inthe engine cooling system shouldbe:
Ra minimum of 50% (antifreeze protectiondowntoapproximately -35 °F (-37 °C))
Ra maximum of 55% (antifreeze protectiondownto-49 °F (-45 °C))
Coolant capacity
ModelCapacity
All models9.1 US qt (8.6 liters)
Notes on windshieldwasher fluid
Observethe notes on operatingfluids(page 425).
Technical data429