warning MERCEDES-BENZ C CLASS 2019 User Guide

Calling upthe Digital Operator's Manual
Multimedia system:
VehicleÕOperator's Manual
Select a menu item.
In addition,you can also call upthe Operator'sManual within a main function (e.g. viaMediaInfo).
The Digital Operator's Manual describesthefunction and operation ofthevehicle andthemultimedia system.
For safetyreasons,the Digital Operator's Man‐ual is deactivated while driving.
The Digital Operator's Manual containsthefol‐lowing menu items:
RSearch: allowsyoutosearchpreciselyforkeywords.
RQuick start: providesyou with importantinformation sothatyou canstart usingyourvehicle immediately.
RTips: provides tips on howtouseyourvehiclein certain situations.
RMessages: providesyou with further informa‐tion aboutthe messages inthe instrumentcluster.
RBookmarks: providesyou with a list of allthebookmarksyou havestoredyourself.
1Picture
2Menu
3Navigation window
Some sections ofthe Digital Operator's Manual,such aswarnings, can be made visiblebyhigh‐lighting and pressingthem.
The Operator's Manual can also befound inthe Mercedes-Benz Guides app in all com‐mon appstores.
20Digital Operator's Manual

Assistance Center (USA) atthe hotline number1-800-FOR-MERCedes (1-800-367-6372)or Cus‐tomer Service (Canada) at 1-800-387-0100.
Operating safety
\nWARNINGRisk of accident duetomal‐functions or systemfailures
Ifyou do not havethe prescribed service/maintenanceworkor anyrequiredrepairscarried out,this couldresult in malfunctionsor systemfailures.
Always havethe prescribed service/maintenanceworkaswell anyrequiredrepairs carried out at aqualified spe‐cialistworkshop.
\nWARNINGRisk of accident or injuryduetoincorrect modifications on electroniccomponent parts
Modification of electronic components,theirsoftware or wiring could impairtheir function
and/orthe function ofother networked com‐ponent parts. In particular, systemsrelevanttosafety could also be affected.
As aresult,these may no longer functionproperlyand/or jeopardizethe operatingsafety ofthevehicle.
Nevertamper withthe wiring and elec‐tronic component parts ortheir soft‐ware.
You should haveallworkon electricaland electronic components carried outat aqualified specialistworkshop.
Observethe "On-board electronics" section in"Technical data".
\nWARNINGRisk offireduetoflammablematerials on hot parts oftheexhaustsystem
Flammable material such as leaves, grass ortwigs may ignite iftheycome into contactwithhot parts oftheexhaust system.
When driving on unpavedroads or off-road,regularlycheckthevehicle under‐side.
Removetrapped plants orotherflam‐mable material.
Ifthere is damage, consult aqualifiedspecialistworkshop immediately.
NOTEDamagetothevehicle
Inthefollowing situations, in particular,thereis arisk of damagetothevehicle:
RThevehicle becomes grounded, e.g. on ahigh curb or an unpavedroad
RThevehicle is driventoofastover anobstacle, e.g. a curb, speed bumpor pot‐hole
RA heavy objectstrikesthe underbody orchassis components
In situations such asthis,the body,theunderbody,chassis components, wheels ortires could be damaged withoutthe damagebeing visible. Components damaged inthis
24General notes

way can unexpectedlyfail or, inthe case ofan accident, may not absorbthe loadsthatarise as intended.
Ifthe underbody paneling is damaged,flam‐mable materials such as leaves, grass ortwigs can collect betweenthe underbody andthe underbody paneling. These materials mayignite iftheycome into contact withhotparts ontheexhaust system.
Havethevehiclechecked andrepairedimmediately at aqualified specialistworkshop.
or
If driving safety is impaired while con‐tinuingyour journey,pullover andstopthevehicle immediately in accordancewiththe traffic conditions, and contactaqualified specialistworkshop.
Declaration of conformityfor wirelessvehi‐cle components
USA:"The wireless devices ofthisvehicle com‐ply withPart15ofthe FCCRules. Operation is
subjecttothefollowing two conditions: 1) Thesedevices may not cause harmful interference, and2) These devices mustaccept any interferencereceived, including interferencethat may causeundesired operation. Changes or modificationsnotexpressly approvedbythe partyresponsiblefor compliance couldvoidthe user's authoritytooperatethe equipment."
Canada:"The wireless devices ofthisvehiclecomply with Industry Canada license-exemptRSSstandard(s). Operation is subjecttothefol‐lowing two conditions: (1) These devices maynot cause interference, and (2) These devicesmustaccept any interference, including interfer‐encethat may cause undesired operation ofthedevice."
USA:"Wirelesscharging systemfor mobile devi‐ces (model: WMI2Wireless Mobile Interface):this device complies withPart18ofthe FCCRules."
The name and address oftheresponsible partyis:
peiker acustic GmbH
Max-Planck-Str.28-32
61381Friedrichsdorf
Germany
Diagnostics connection
The diagnostics connection is only intendedforthe connection of diagnostic devices at aquali‐fied specialistworkshop.
\nWARNINGRisk of accident duetocon‐necting devicestothe diagnostics con‐nection
Ifyou connect equipmenttoa diagnosticsconnection inthevehicle, it may affecttheoperation ofvehicle systems.
As aresult,the operating safety ofthevehi‐cle could be affected.
Only connect equipmenttoa diagnos‐tics connection inthevehicle which isapprovedforyourvehiclebyMercedes-Benz.
General notes25

\nWARNINGRisk of accident duetoobjects inthe driver'sfootwell
Objects inthe driver'sfootwell may impedepedal travel or block a depressed pedal.
This jeopardizesthe operating androadsafety ofthevehicle.
Stowall objects inthevehicle securelysothattheycannotgetintothe driver'sfootwell.
Always installthefloor mats securelyand as prescribed in ordertoensurethatthere is always sufficientroomforthe pedals.
Do not use loosefloor mats and do notplacefloor mats ontop of one another.
NOTEBattery discharging from usingdevices connectedtothe diagnosticsconnection
Using devices atthe diagnostics connectiondrainsthe battery.
Checkthechargelevel ofthe battery.
Ifthechargelevel is low,chargethebattery,e.g.bydriving a considerabledistance.
Connecting equipmenttothe diagnostics con‐nection can leadtoemissions monitoring infor‐mation beingreset,forexample. This may leadtothevehiclefailingtomeettherequirements ofthe next emissions inspection duringthe maininspection.
Qualified specialistworkshop
An authorized Mercedes-Benz Center is aquali‐fied specialistworkshop. It hasthe necessaryspecial skills,tools andqualificationstocor‐rectly carryouttheworkrequired onyourvehi‐cle. This particularlyappliestosafety-relevantworks.
Forthefollowing, always haveyourvehiclechecked at an authorized Mercedes-Benz Cen‐ter:
Rsafety-relevantworks
Rservice and maintenancework
Rrepairwork
Rmodifications aswell as installations andconversions
Rworkon electronic components
Mercedes‑Benzrecommends a Mercedes‑Benzservice center.
Correct use ofthevehicle
Ifyouremoveanywarningstickers,you orotherscouldfailtorecognize certain dangers. Leavewarningstickersin position.
Observethefollowing information in particularwhen drivingyourvehicle:
Rthe safety notes inthis manual
Rtechnical dataforthevehicle
Rtrafficrules andregulations
Rlawsand safetystandards pertainingtomotorvehicles
26General notes

Accesstothevehicle and/orthe EDR is neededtoread datathat isrecordedbythe EDR, andspecial equipment isrequired. In additiontothevehicle manufacturer,other partiesthat havethespecial equipment, such as law enforcement,canreadthe informationbyaccessingthevehi‐cle orthe EDR.
EDR data may be used in civil and criminal mat‐tersas atool in accidentreconstruction, acci‐dent claims andvehicle safety.Sincethe CrashDataRetrieval (CDR)toolthat is usedtoextractdatafromthe EDR is commerciallyavailable,Mercedes-Benz USA,LLC ("MBUSA")expresslydisclaims any and all liability arising fromtheextraction ofthis informationbyunauthorizedMercedes-Benz personnel.
MBUSA will not share EDR data withothers with‐outthe consent ofthevehicleowner or, ifthevehicle is leased, withoutthe consent ofthe les‐see. Exceptionstothisrepresentation includeresponsestosubpoenasbylaw enforcement;byfederal,state or local government; in connectionwith or arising out of litigation involving MBUSAor its subsidiaries and affiliates; or, asrequiredbylaw.
Warning:the EDR is a component oftheRestraint System Module.Tampering with, alter‐ing, modifying orremovingthe EDR componentmayresult in a malfunction oftheRestraint Sys‐tem Module andother systems.
State lawsorregulationsregarding EDRsthatconflict withfederalregulation are pre-empted.This meansthat intheevent of such conflict,thefederalregulation governs. As of December2016,17states haveenacted lawsrelatingtoEDRs.
Copyright
Free and open source software
Information on free and open source softwarelicensesforyourvehicle's software can befoundonthe datastorage medium inyourvehicledocumentwallet and onthe Internettogetherwith updates:
http://www.mercedes-benz.com/opensource
Registered trademarks
RBluetooth®is aregistered trademark of Blue‐tooth SIG Inc.
RDTS™ is aregistered trademark ofDTS, Inc.
RDolby®and MLP™ areregistered trademarksof DOLBY Laboratories.
RBabySmart™, ESP®and PRE-SAFE®arereg‐istered trademarksof DaimlerAG.
RHomeLink®is aregistered trademark ofJohnson Controls.
RiPod®andiTunes®areregistered trademarksof Apple Inc.
RBurmester®is aregistered trademark ofBurmesterAudiosysteme GmbH.
RMicrosoft®andWindowsMedia®areregis‐tered trademarksof Microsoft Corporation.
RSIRIUS®is aregistered trademark of SiriusXMRadio Inc.
RHDRadio™ is aregistered trademark of iBiq‐uity Digital Corporation.
General notes31

Restraint system
Protectionbytherestraint system
Therestraint system includesthefollowing com‐ponents:
RSeat belt system
RAirbags
RChildrestraint system
RChild seat securing system
Therestraint system canreducetherisk ofvehi‐cle occupants coming into contact with parts ofthevehicle's interior intheevent of an accident.Therestraint system can alsoreducetheforcestowhichvehicle occupants are subjected intheevent of an accident.
Only a seat belt which isworncorrectly can pro‐videthe intended level of protection. Dependingonthe detected accident situation, EmergencyTensioning Devices and/or airbags supplement acorrectlywornseat belt. EmergencyTensioningDevices and/or airbags are not deployed ineveryaccident.
Fortherestraint systemtoprovide its full protec‐tion, each occupant must observethefollowing:
RFastenthe seat belt correctly.
RBe in an almost upright position withtheirback againstthe seat backrest.
RSit withtheirfeetresting onthefloor, if pos‐sible.
RAlways secure persons under 5ft(1.50 m)tall in an additionalrestraint system suitablefor Mercedes-Benzvehicles.
However,no systemavailabletoday can com‐pletelyeliminate injuries andfatalities ineveryaccident situation. In particular,the seat beltand airbaggenerally do not protect againstobjects penetratingthevehicle fromthe outside.Therisk of an injuryresulting from airbagdeployment also cannot beruled out entirely.
Limited protection fromtherestraint system
\nWARNINGRisk of injuryor death frommodificationstotherestraint system
Therestraint system can no longer functioncorrectly after alterations havebeen made.
Therestraint system maythen not protectthevehicle occupants as intendedbyfailingin an accident or triggering unexpectedly,forexample
Never alterthe parts oftherestraintsystem.
Nevertamper withthe wiring or anyelectronic component parts ortheirsoftware.
If it is necessarytoadjustthevehicletoaccom‐modate a person with disabilities, contact anauthorized Mercedes-Benz Centerfor details.
USA only:for further information contact ourCustomer Assistance Center at1-800-FOR-MERCedes (1‑800‑367‑6372).
Occupant safety33

Restraint system functionality
Whenthe ignition is switched on, a self-test isperformed, during whichtheurestraint sys‐temwarning lamp lights up. It goes out no laterthan afew seconds afterthevehicle isstarted.The components oftherestraint system arethenfunctional.
Malfunctioningrestraint system
A malfunction has occurred intherestraint sys‐tem if:
Rtheurestraint systemwarning lamp doesnot light up whenthe ignition is switched on
Rtheurestraint systemwarning lamplights up continuously orrepeatedly during ajourney
\nWARNINGRisk of injuryorfatal injuryduetoa malfunction intherestraint sys‐tem
Iftherestraint system is malfunctioning,restraint system components may be trig‐
gered unintentionally or might not be trig‐gered at all intheevent of an accident. Thismay affectthe EmergencyTensioning Deviceor airbag,forexample.
Havetherestraint systemchecked andrepaired immediately at aqualified spe‐cialistworkshop.
Function oftherestraint system in an acci‐dent
Howtherestraint systemworks is determinedbythe severity ofthe impact detected andthe typeof accident anticipated:
RFrontal impact
RRear impact
RSide impact
RRollover
The activationthresholdsforthe components oftherestraint system are determined based ontheevaluation ofthe sensorvalues measured atvarious points inthevehicle. This process is pre-emptive in nature. The triggering/deployment of
the components oftherestraint system musttakeplace in good time atthestart ofthe colli‐sion.
Factors whichcan only be seen and measuredafter a collision has occurred do not play a deci‐siverole inthe deployment of an airbag.Nordotheyprovide an indication of airbag deployment.
Thevehicle may be deformed significantly with‐out an airbag being deployed. This isthe case ifonly parts which arerelatively easily deformedare affected andtherateofvehicle decelerationis not high. Conversely, an airbag may bedeployedeventhoughthevehicle suffersonlyminor deformation. Ifveryrigidvehicle partssuch as longitudinal members are hit,forexam‐ple,this mayresult in sufficiently high levels ofvehicle deceleration.
34Occupant safety

The components oftherestraint system canbe activated or deployed independently ofeachother:
Component Detected deploy‐ment situation
Front EmergencyTen‐sioning DevicesFrontal impact,rearimpact, side impact,rollover
Rear EmergencyTen‐sioning DevicesFrontal impact,rearimpact,rollover
Driver's airbag, frontpassenger front air‐bag
Frontal impact
Knee airbagFrontal impact
Side airbagSide impact
Window curtain air‐bagSide impact,rollover,frontal impact
The front passenger front airbag can only bedeployed in an accident ifthePASSENGER AIRBAG OFF indicator lamp is off. Ifthe front
passenger seat is occupied, make sure, bothbefore and duringthe journey,thatthestatus ofthe front passenger front airbag is correct(page44).
\nWARNINGRisk of burns from hot air bagcomponents
The air bag parts are hot after an air bag hasbeen deployed.
Do nottouchthe air bag parts.
Havea deployed air bagreplaced at aqualified specialistworkshop as soonas possible.
Mercedes-Benzrecommendsthatyou havethevehicletowedtoaqualified specialistworkshopafter an accident.Takethis into account, partic‐ularly if an EmergencyTensioning Device is trig‐gered or an airbag deployed.
Ifthe EmergencyTensioning Devices are trig‐gered or an airbag is deployed,you will hear abang, and a small amount of powder may also bereleased:
RThe bang will notgenerally affectyour hear‐ing.
RIngeneral,the powderreleased is not haz‐ardoustohealth but may cause short-termbreathing difficultiestopersons sufferingfrom asthma orother pulmonary conditions.
Provided it is safetodo so, leavethevehicleimmediately or openthe window in ordertoprevent breathing difficulties.
Airbags andpyrotechnic EmergencyTensioningDevices contain perchlorate material, which mayrequire special handling or environmental pro‐tection measures.National guidelinesregardingwaste disposal must be observed. In California,see http://www.dtsc.ca.gov/HazardousWaste/Perchlorate/index.cfm.
Occupant safety35

Seat belts
Protection providedbythe seat belt
Alwaysfastenyour seat belt correctlybeforestarting a journey.A seat belt can only providethe best level of protection if it isworncorrectly.
\nWARNINGRisk of injuryor death duetoincorrectlyfastened seat belt
Ifthe seat belt is notworncorrectly, it can‐not performits intended protective function.
In addition, an incorrectlyfastened seat beltcan also cause injuries,forexample, intheevent of an accident or when braking orchanging direction suddenly.
Always ensurethat allvehicle occu‐pants havetheir seat beltsfastenedcorrectly and are sitting properly.
Always observethe instructions aboutthe cor‐rect driver's seat position and adjustingthe seat(page 90).
In orderforthe correctlywornseat belttopro‐videthe intended level of protection, eachvehi‐cle occupant must observethefollowing infor‐mation:
RThe seat belt must not be twisted and mustfit tightly and snugly acrossthe body.
RThe seat belt must berouted acrossthe cen‐ter ofthe shoulder and as low down acrossthe hips as possible.
RThe shoulder section ofthe seat belt shouldnottouchyour necknor berouted underyour arm or behindyour back.
RAvoidwearing bulky clothing, e.g. a wintercoat.
RPushthe lap belt down asfar as possibleacrossyour hips and pull tight withthe shoul‐der section ofthe belt. Neverroutethe lapbelt acrossyour abdomen.
RNeverroutethe seat belt across sharp, poin‐ted, abrasive or fragile objects.
ROnly one person should use each seat belt atany one time. Never allowbabies andchil‐drentotravel sitting onthe lap of anothervehicle occupant.
RNever secure objects with a seat belt iftheseat belt is also being usedbyone ofthevehicle's occupants. Always observetheinstructionsfor loadingthevehicle whensecuring objects, luggage or loads(page104).
Also ensurethat no objects, e.g. a cushion,areever placed between a person andtheseat.
The seat belts onthefollowing seats are equip‐ped with a special seat beltretractor:
Rfront-passenger seat
RRear seats
Activate or deactivatethe special seatbeltretractor (page54).
Ifchildren are traveling inthevehicle, be suretoobservethe instructions and safety notes on"Children inthevehicle" (page 49).
36Occupant safety

Reduced seat belt protection
\nWARNINGRisk of injuryor death duetoincorrect seat position
The seat belt does not offerthe intendedlevel of protection ifyou havenot movedtheseat backresttoan almostvertical position.
When braking or intheevent of an accident,you could slide underneaththe seat belt andsustain abdominal or neck injuries,forexam‐ple.
Adjustthe seat properlybefore begin‐ningyour journey.
Always ensurethatthe seat backrest isin an almostvertical position andthatthe shoulder section ofyour seat belt isrouted acrossthe center ofyour shoul‐der.
\nWARNINGRisk of injuryor death whenadditionalrestraint systems are not usedfor persons with a smaller build
Persons under 5ft(1.50 m)tall cannotwearthe seat belt correctly without a suitableadditionalrestraint system.
Ifthe seat belt is notworncorrectly, it can‐not performits intended protective function.In addition, an incorrectlyfastened seat beltcan also cause injuries,forexample, intheevent of an accident or when braking orchanging direction suddenly.
Always secure persons under 5ft(1.50 m)tall in a suitablerestraint sys‐tem.
\nWARNINGRisk of injuryor death duetodamaged or modified seat belts
Seat belts cannotprovide protection inthefollowing situations:
RIfthe seat belts are damaged, modified,extremelydirty, bleached or dyed
RIfthe seat belt buckle is damaged orextremelydirty
RIfthe EmergencyTensioning Devices,seat belt anchorages or seat beltretrac‐torshavebeen modified
Seat belts may be damaged in an accident,althoughthe damage may not be visible, e.g.duetosplinters ofglass.
Modified or damaged seat belts maytear orfail, e.g. in an accident.
Modified EmergencyTensioning Devices canaccidentallytrigger orfailtofunction asintended.
Never modifythe seat belts, EmergencyTensioning Devices, seat belt ancho‐rages or seat beltretractors.
Makesurethatthe seat belts areundamaged, notwornand clean.
Always havethe seat beltscheckedimmediately after an accident at aqualified specialistworkshop.
Occupant safety37