ECU MERCEDES-BENZ C CLASS 2019 Service Manual

Opening/closing agaragedoor
Requirements:RThe corresponding button is programmedtooperatethe door.
Press and hold buttons1,2or3untilthe door opens or closes.
If indicator lamp4flashesyellow afterapproximately 20 seconds: press and hold
the previously pressed button again untilthedoor opens or closes.
Clearingthegaragedoor opener memory
Press and hold buttons1and3.Indicator lamp4lights upyellow.
If indicator lamp4flashesgreen:releasebuttons1and3.The entire memoryhas been deleted.
Radio equipment approval numbersfor thegaragedoor opener
Radio equipment approval numbers
Brazil
Esteequipamento opera em caráter secundário,istoé, nãotem direito à proteção contra interfer‐ência prejudicial, mesmo de estações do mesmotipo, e não pode causar interferência a sistemasoperando em caráter primário.
Paramaiores informações acessarwww.anatel.gov.br
16 6Driving and parking

shift from transmission position]to[or^.
RIfthe transmission is in position^,thetrunk lid mustbe closed.
Ifthe seat belttongue is not inserted intotheseat belt buckle ofthe driver's seat,thefollow‐ing conditions must be fulfilled:
RThe driver's door is closed.
RYou movethe transmission out of transmis‐sion position]oryou havepreviouslydrivenfasterthan 2mph (3 km/h).
RIfthe transmission is in position^,thetrunk lid mustbe closed.
Whenthe electric parking brake isreleased,theredI(USA) or$(Canada) indicator lampinthe instrument cluster goes out.
Applying/releasingthe electric parkingbrake manually
Applying
Push handle1.TheredI(USA) or$(Canada) indica‐tor lamp appears inthe instrument cluster.
The electric parking brake is only securelyapplied ifthe indicator lamp is lit continu‐ously.
Releasing
Switchonthe ignition.
Pull handle1.TheredI(USA) or$(Canada) indica‐tor lamp inthe instrument cluster goes out.
Emergency brakingPress and hold handle1.Whenthevehicle has been brakedto astandstill,the electric parking brake isapplied. TheredI(USA) or$(Can‐ada) indicator lamp appears inthe instru‐ment cluster.
Notes on parkingthevehiclefor anextendedperiod
Ifyou leavethevehicle parkedfor longerthanfourweeks,the disconnected battery may bedamagedbydeep discharge.
Driving and parking16 9

vehicles withthe Driving AssistancePackage, intherange between15mph (20 km/h) and130mph (210km/h).
Otherfeatures ofActive Distance AssistDISTRONIC:
RAdjuststhe drivingstyle depending ontheselected drive program (fuel-saving, comfort‐able or dynamic) (page153)
RVehicles with Driving AssistancePack‐age:reactstostationaryvehicles detected inurban speedranges (except bicycles andmotorcycles).
RInitiates accelerationtothestored speed ifthe turn signal indicator is switched ontochangetotheovertaking lane.
RVehicles with Driving AssistancePack‐age:takes one-sidedovertakingrestrictionsinto account on highways or on multi-laneroads with separateroadways (country-dependent).
Vehicles withActiveParking Assist and Driv‐ing AssistancePackage:ifthevehicle hasbeen brakedtoastandstill on multi-lane,struc‐
turallyseparateroadwaysbyActive DistanceAssistDISTRONIC, it can automaticallyfollowthevehicle in front driving off again within30 seconds. If a critical situation is detectedwhen driving off, a visual and acousticwarning isgiven indicatingthatthe driver must nowtakecontrol ofthevehicle. Thevehicle is not acceler‐ated any further.
Active Distance AssistDISTRONIC is only an aid.The driver isresponsibleforkeeping a safe dis‐tancetothevehicle in front,forvehicle speedandfor braking in good time.
System limitations
The system may be impaired or may not functioninthefollowing instances:
RIn snow,rain,fog, heavy spray, ifthere isglare, in direct sunlight or ingreatlyvaryingambient light.
RThe windshield inthe area ofthe camera isdirty,fogged up, damaged or covered.
RIftheradar sensors are dirty or covered.
RIn parkinggarages or onroads withsteepuphill or downhill gradients.
RIfthere are narrowvehicles in front, such asbicycles or motorcycles.
In addition, on slipperyroads, braking or accel‐erating can cause one or several wheelstolosetraction andthevehicle couldthen skid.
Do not useActive Distance AssistDISTRONIC inthese situations.
\nWARNINGRisk of accident from acceler‐ation or brakingbyActive DistanceAssistDISTRONIC
Active Distance AssistDISTRONIC may accel‐erate or brake inthefollowing cases,forexample:
RIfthevehicle pullsawayusingActive Dis‐tance AssistDISTRONIC.
RIfthestored speed is called up and isconsiderablyfaster or slowerthanthecurrently driven speed.
RIfActive Distance AssistDISTRONIC nolonger detects avehicle in front or doesnotreacttorelevant objects.
184Driving and parking

Toactivate/deactivateActive DistanceAssist DISTRONIC:press button1.
ToactivateActive Distance AssistDISTRONIC:pressrocker switch3up (SET+) or down (SET-), or pressrocker switch4up.Removeyourfootfromthe acceleratorpedal.The current speed isstored and maintainedbythevehicle.
or
ToactivateActive Distance AssistDISTRONIC with astored speed:pressrocker switch4up.Removeyourfootfromthe accelerator pedal.
Ifrocker switch4is pressed up again afteractivation with astored speed,Active Dis‐tance AssistDISTRONIC is activated withthespeedrestriction displayed inthe instrumentcluster.
Toacceptthe displayed speedrestrictionwhenActive Distance Assist DISTRONICis active:pressrocker switch4up (RES).The speed limit displayed inthe instrumentcluster is adopted asthestored speed. Thevehicle adapts its speedtothat ofthevehiclein front, but only uptothestored speed.
TopullawaywithActive Distance AssistDISTRONIC:removeyourfootfromthebrake pedal and activateActive DistanceAssistDISTRONIC.
Pressrocker switch4up (RES).
or
Depressthe accelerator pedal briefly andfirmly.The functions ofActive Distance AssistDISTRONIC continuetobe carried out.
\nWARNINGRisk of accident duetoActiveDistance AssistDISTRONICstill beingactivated whenyou leavethe driver'sseat
Ifyou leavethe driver's seat whilethevehicleis being brakedbyActive Distance AssistDISTRONIC only,thevehicle canrollaway.
Always deactivateActive DistanceAssistDISTRONIC and securethevehi‐cletoprevent it fromrollingawaybeforeyou leavethe driver's seat.
TodeactivateActive Distance AssistDISTRONIC:pressrocker switch4down(CNCL).
Toincrease/reduce speed:pressrockerswitch3up/downtothe pressure point.Thestored speed is increased orreducedby1mph (1km/h).
18 6Driving and parking

Activating/deactivatingActive Lane ChangeAssistMultimedia system:
VehiclekAssistance
SelectLane Change Assist.
Activatesor deactivateSthe function.
Function ofActive EmergencyStop AssistIfthe driver continually ignoresthe visual oracousticwarningtoputtheir hands onthesteer‐ing wheel,theBeginning Emergency Stopmes‐sage appears inthe multifunction display.Ifthedriverstill does notrespond,Active DistanceAssistDISTRONICreducesthe speed. Thevehi‐cle is decelerated instagestoastandstill.Atspeeds below 40mph (60 km/h)the hazardwarning lights switch on automatically.
Whenthevehicle isstationary,thefollowingactions are carried out:
RThevehicle is secured withthe electric park‐ing brake
RActive Distance AssistDISTRONIC is ended
RThevehicle is unlocked
RIf possible, an emergency call is placedtothe Mercedes-Benz emergency call center
The driver can cancelthe deceleration at anytimebyperforming one ofthefollowing actions:
RSteering
RBraking or accelerating
RPressing asteering wheel button
ROperatingTouch Control
RActivating or deactivatingActive DistanceAssistDISTRONIC
OverviewofActive Distance AssistDISTRONIC displaysinthe instrument clus‐ter
The assistance graphic andthestatus displayshowthestatus ofthefollowing functions intheinstrument cluster:
RActive Distance AssistDISTRONIC
RRoute-based speed adaptation
RActiveSteering Assist
Assistant display
1Route-based speed adaptation (type ofrouteevent)
2Vehicle in front
3Distance indicator
4Set specified distance
5Active Lane Change Assistlanechange dis‐play
Driving and parking19 3

Function of HillStart Assist
HillStart Assist holdsthevehiclefor a shorttime when pullingawayon a hill underthefol‐lowing conditions:
RVehicles with automatic transmission:The transmission is in position[or^.
RThe electric parking brake isreleased.
This givesyou enough timetomoveyourfootfromthe brake pedaltothe accelerator pedaland depress it beforethevehicle beginstorollaway.
\nWARNINGRisk of accident and injuryduetothevehiclerollingaway
After a short time, HillStart Assist no longerholdsthevehicle and it canrollaway.
Therefore, swiftly moveyourfootfromthe brake pedaltothe acceleratorpedal. Never attempttoleavethevehi‐cle if it is being heldbyHillStart Assist.
HOLD function
HOLD functionThe HOLD function holdsthevehicle at astand‐still withoutrequiringyoutodepressthe brakepedal, e.g. whilewaiting in traffic.
The HOLD function is only an aid. Theresponsi‐bilityforthevehicle safelystandingstillremainswiththe driver.
System limitationsThe HOLD function is only intendedtoprovideassistance when driving and is not a sufficientmeans of safeguardingthevehicle againstrollingawaywhenstationary.
RThe incline must not be greaterthan 30%.
Activating/deactivating the HOLD function
\nWARNINGRisk of an accident duetotheHOLD function being activated whenyouleavethevehicle
Ifyou leavethevehicle while onlythe HOLDfunction is brakingthevehicle,thevehiclecanrollawayinthefollowing situations:
RIfthere is a malfunction inthe system orinthe power supply.
RIfthe HOLD function is deactivatedbydepressingthe accelerator pedal or brakepedal, e.g.byavehicle occupant.
Always deactivatethe HOLD functionand securethevehicle againstrollingawaybefore leavingthevehicle.
Driving and parking19 5

takeregular breaks in good timethat allowforadequaterecuperation.
You canchoose between two settings.
RStandard:normal system sensitivity.
RSensitive:higher system sensitivity. Thedriver iswarned earlier andthe attentionlevel detectedbyATTENTION ASSIST is adap‐ted accordingly.
If drowsiness or increasing lapses in concentra‐tion are detected,theATTENTION ASSIST: Takea Break!warning appears inthe instrument dis‐play.You can acknowledgethe message andtake a break where necessary.Ifyou do nottakea break andATTENTION ASSIST continuestodetect increasing lapses in concentration,youwill bewarned again after a minimum of15minutes.
You can havethefollowingstatus informationforATTENTION ASSIST displayed inthe assistancemenu ofthe on-board computer:
RThe length ofthe journey sincethe lastbreak.
RThe attention level determinedbyATTENTIONASSIST.
IfATTENTION ASSIST is unabletocalculatetheattention level and cannot issue awarning,theSystem Suspendedmessageappears.
If awarning is given inthe instrument display,the multimedia system offerstosearchfor arestarea.You can select arestarea andstart naviga‐
tiontothisrestarea. This function can be activa‐ted and deactivated inthe multimedia system.
IfATTENTION ASSIST is deactivated,the

Changing a media source
Pressthe left-handTouch Control.
Toselect a media source:swipe upwardsor downwards onthe left-handTouch Con‐trol.
Pressthe left-handTouch Control.
Dialingtelephone numbers usingthe on-board computer
\nWARNINGRisk of distraction from infor‐mation systems and communicationsequipment
Ifyou operate information and communica‐tion equipment integrated inthevehiclewhen driving,you will be distracted fromthetraffic situation. This could also causeyoutolose control ofthevehicle.
Only operatethis equipment whenthetraffic situation permits.
Ifyou cannot be sure ofthis,stopthevehicle whilst paying attentiontoroad
and traffic conditions and operatetheequipment withthevehiclestationary.
Whentelephoning,you must observethe legalrequirementsforthe countryin whichyou arecurrently driving.
Requirements:RThe mobile phone is connectedtothe multi‐media system.
On-board computer:
Phone
Vehicles withthe COMAND multimedia sys‐tem:The mostrecenttelephone calls (dialed,received and missed calls) are displayed onthePhonemenu.
Toselect an entry:swipe upwards or down‐wards onthe left-handTouch Control.
Pressthe left-handTouch Control.Ifthere is only onetelephone numbersavedtoan entry:thetelephone numberwill be selected.
Ifthere are multipletelephone numberssavedtoan entry:swipe upwards or down‐
wards onthe left-handtouch controltoselectthe desiredtelephone number.
Pressthe left-handTouch Control.Thetelephone number will be dialed.
Thefollowing displaysmay appear instead ofthetelephone numbers dialed:
RPlease Wait...:the application isstarting. If a
Bluetooth®connectiontothe mobile phoneis not established,the menufor authorizingand connecting a mobile phone will be dis‐played onthe multimedia system(page 304).
RUpdating data...:the call list is being upda‐ted.
RImporting Contacts...: contacts are beingimported fromthe mobile phone or astoragemedium.
Accepting/rejecting a callVehicles with Head-up Display:whenyoureceivea call,theIncoming Callmessage willappear onthe Head-up Display.
236Instrument Display and on-board computer

bToswitchtospecialcharacters and sym‐bols.
jToswitchtoupper-case or lower-case let‐ters.
TToswitchthe language.
vToswitchtocharacter entryonthetouch‐pad.
Theavailable editing functions depend onthe editingtask,the language set andthecharacter level.
Toconfirmthe entry:select¡.
Example: entering a destination (navigation)
Enterthe POI or address (page277).
Enteringcharacters onthetouchpad
Requirements:RThetouchpad is switched on(page 256).
RThe entered or selectedcharacter should beread out:the handwritingrecognitionread-aloud function is switched on(page 257).
Example:renamingfavorites
Call upthe "Renamingfavorites" function(page 259).
Toenter acharacter:useyourfingertowritecharacters onthetouchpad.Thecharacter is entered inthe input line. Ifdifferent interpretations are possible,charac‐ter suggestions are displayed.
Toselect acharacter suggestion:swipe upor down onthetouchpad.
Resumecharacter input.
Toenter a space:swiperight whenthe cur‐sor is located inthe input line.
Todelete acharacter:swipe left whenthecursor is located inthe input line.
Toconfirmthe entry:pressthetouchpad.Tofinishcharacter entry:swipe upwards.
or
Pressthe8button.
Example: entering a destination (navigation)
Enterthe POI or address (page277).
System settings
Display
Configuring display settingsMultimedia system:
SystemCDisplay and Designs
Styles
SelectDesigns.
SelectSport,ClassicorProgressive.
Adaptingthe ambient lightingfor thestyle
SelectAdjust Amb. Lighting.Activatesor deactivateSthe function.
Multimedia system263

If AndroidAutois active, a promptappears ask‐
ing whether Bluetooth®should be deactivated.
SelectYes.
AndroidAutois closed and Bluetooth®isdeactivated.
Wi-Fi
Wi-Fi connectionoverviewYou can useWi-Fitoestablish a connection withaWi-Fi network andtoaccessthe Internet orother network devices.
Thefollowing connection options areavailable:
RWi-Fi connection
TheWi-Fi connectiontoaWi-Fi-capabledevice, e.g.the customer's mobile phone oratablet PC is established.
RMultimedia system as aWi-Fi hotspot
Usingthis function, atablet PC or notebookcan be connected,forexample.
Toestablish a connection,you can usethefol‐lowing methods:
RWPS PIN
The connectiontoa secureWi-Fi network ismade via a PIN.
RWPS PBC
The connectiontoa secureWi-Fi network ismadebypressing a button (push button).
RSecuritykey
The connectiontoa secureWi-Fi network ismade via a securitykey.
Setting upWi-Fi
Requirements:RThe devicetobe connected supports one ofthethree means of connection described(page 266).
Multimedia system:
SystemöConnectivity
Activating/deactivatingWi-Fi
SwitchWi-Fionsor offS.IfWi-Fiis deactivatedS, communication viaWi-Fitoall devices is interrupted. This alsomeansthat a connectiontothe HERMEScommunication module cannotbe estab‐
lished. Then functions such as dynamicrouteguidance with LiveTraffic Information are notavailable.
Connectingthe multimedia system with adevice viaWi-FiThis function isavailable if a HERMES communi‐cation module is not installed.
The type of connection established must beselected onthe multimedia system and onthedevicetobe connected.
The connection procedure may differdepending onthe device.Followthe instruc‐tionsthat are shown inthe display.Furtherinformation (seethe manufacturer's operat‐ing instructions).
SelectInternet Settings.
SelectSearch for Wi-Fi Networks.
Using a securitykey
Select aWi-Fi network inthe list.
Havethe securitykey displayed onthe devicetobe connected (seethe manufacturer'soperating instructions).
266Multimedia system