towing MERCEDES-BENZ C CLASS 2019 Service Manual

NOTEDamagedueto towingawayatexcessively high speeds orover long dis‐tances
The drivetrain could be damaged whentow‐ing atexcessively high speeds orover longdistances.
Atowing speed of 30mph (50 km/h)must not beexceeded.
Atowing distance of 30 miles (50 km)must not beexceeded.
\nWARNINGRisk of accident whentowingavehicle which istoo heavy
Ifthevehicle beingtow-started ortowedawayis heavierthanthe permissible grossmass ofyourvehicle,thefollowing situationscan occur:
RThetowingeye may become detached.
RThevehicle/trailer combination mayswerveorevenoverturn.
If anothervehicle istow-started ortowedaway, itsweight must notexceed
the permissible gross mass ofyourownvehicle.
If avehicle must betowstarted ortowedaway,its permissible gross mass must notexceedthepermissible gross mass ofthetowingvehicle.Information onthe permissible gross mass ofthevehicle can befound onthevehicle iden‐tification plate (page 423).
Vehicles with automatic transmission:Donot openthe driver's door or front passengerdoor,otherwisethe automatic transmissionautomatically shiftstoposition].Installingthetowingeye (page 385).
Fastenthetow bar.
NOTEDamageduetoincorrect connec‐tion
Only connectthetowrope ortow bartothetowingeyes.
Deactivatingthe automatic locking mecha‐nism (page71).
Do notactivatethe HOLD function.
DeactivateActive Brake Assist(page181).
Vehicles with automatic transmission:Shiftthe automatic transmissiontoposition\\.
Releasethe electric parking brake.
\nWARNINGRisk of accident duetolimi‐ted safety-related functions duringthetowing process
Safety-related functions are limited or no lon‐geravailable inthefollowing situations:
Rthe ignition is switched off.
Rthe brake system or powersteering sys‐tem is malfunctioning.
Rthe energy supply orthe on-board electri‐cal system is malfunctioning.
Whenyourvehicle isthentowedaway, signif‐icantly more effortmay berequiredtosteerand brakethan is normallyrequired.
Use atow bar.
Breakdown assistance383

Make surethatthesteering wheel canmovefreely, beforetowingthevehicleaway.
NOTEDamageduetoexcessive tractivepower
Ifyou pullawaysharply,the tractive powermay betoo high andthevehicles could bedamaged.
Pullawayslowly and smoothly.
Loading thevehiclefor transport
Observethe notes ontowingaway(page 382).
Connectthetow bartothetowingeye inordertoloadthevehicle.
Vehicles with automatic transmission:Shiftthe automatic transmissiontoposition\\.
Vehicles with automatic transmission:The automatic transmission may be locked
in position]intheevent of damagetotheelectrical system.Toshiftto\\, providetheon-board electrical system with power(page379).
Loadthevehicle ontothe transporter.
Vehicles with automatic transmission:Shiftthe automatic transmissiontoposition].
Usethe electric parking braketosecurethevehicle againstrollingaway.
Only securethevehiclebythe wheels.
Vehicles with ADS PLUS (Adaptive DampingSystem PLUS)
\nWARNINGRisk of an accident whentransportingvehicles withAdaptiveDamping System PLUS
Thereduced dampingforces onthevehiclebeing transported can causethevehicle/trailer combinationtostarttoswing.
As aresult, when transportingvehicles withtheAdaptive Damping System PLUS,the
vehicle/trailer combination maystarttoskid.Consequently,you could lose control ofyourvehicle.
When transporting, ensurethat:RThevehicle has been loaded ontothe transporter correctly
RThevehicle is secured at allfourwheels with suitabletensioningstraps
RThe maximum permissible speed of35mph (60 km/h) is notexceededwhen transporting
NOTEDamagetothevehicle from secur‐ing it incorrectly
After loading,thevehicle must besecured at allfour wheels. Otherwise,thevehicle could be damaged.
A minimum distance of 8 in (20 cm) upand 4 in (10 cm) down mustbekepttothe transport platform.
384Breakdown assistance

Securethevehicle on allfour wheels afterloading.
4MATICvehicles/vehicles with automatictransmission
Make surethatthe front andrear axles cometorestonthe same transportationvehicle.
NOTEDamagetothe drivetrain duetoincorrect positioning
Do not positionthevehicle abovetheconnection point ofthe transportvehi‐cle.
Towingeyestoragelocation
Towingeye1is located inthestowage spaceunderthe trunkfloor.
Installingthetowingeye
Pressthe mark on cover1inwards andremove.
Screwinthetowingeyeclockwise asfar as itwill go and tighten.
Make surethat cover1engages inthebumper whenyouremovethetowingeye.
Breakdown assistance385

NOTEDamageduetoincorrect use ofthetowingeye
When atowingeye is usedtorecover avehi‐cle,thevehicle may be damaged inthe proc‐ess.
Only usethetowingeyeto towawayortowstartthevehicle.
Towstartingthevehicle (emergency enginestart)
Vehicles with automatic transmission
NOTEDamagetothe automatic trans‐mission dueto towstarting
The automatic transmission may be damagedinthe process oftowstartingvehicles withautomatic transmission.
Vehicles with automatic transmissionmust not betowstarted.
Vehicles with automatic transmission mustnot betow-started.
Electrical fuses
Notes on electrical fuses
\nWARNINGRisk of accident and injurydueto overloaded lines
Ifyou manipulate or bridge afaulty fuse or ifyoureplace it with a fuse with a higheramperage,the electric line could beoverloa‐ded.
This couldresult in afire.
Alwaysreplacefaulty fuses with speci‐fied new fuses containingthe correctamperage.
NOTEDamageduetoincorrect fuses
Electrical components or systems may bedamagedbyincorrect fuses, ortheir func‐tionality may be significantlyimpaired.
Only use fusesthat havebeen approvedbyMercedes-Benz and which havethecorrect fuserating.
Blown fuses mustbereplaced with fuses ofthesamerating, whichyou canrecognizebythecolor and fuserating. The fuseratings and fur‐ther informationtobe observed are listed inthefuse assignment diagram.
Fuse assignment diagram:onthe fuse box inthe trunk (page 388).
NOTEDamageor malfunctions causedbymoisture
Moisture may cause damagetothe electricalsystem or cause ittomalfunction.
Whenthe fuse box is open, make surethat no moisture can enterthe fusebox.
When closingthe fuse box, make surethatthe seal ofthe lid is positioned cor‐rectly onthe fuse box.
Ifthe newly inserted fuse also blows, havethecause traced andrectified at aqualified special‐istworkshop.
Ensurethefollowing beforereplacing a fuse:
RThevehicle is secured againstrollingaway
386Breakdown assistance

Display messagesPossible causes/consequences andPPSolutions
Check Brake Pads SeeOperator's Manual
*The brake pads havereachedthewear limit.
\nWARNINGRisk of accident duetorestricted braking power
Whenthe brake pads havereachedtheirwear limit,the braking power may berestricted.
Drive on carefully.
Havethe brake systemchecked immediately at aqualified specialistworkshop.
Visit aqualified specialistworkshop.
Driving systems
Display messagesPossible causes/consequences andPPSolutions
Active Blind Spot Asst. NotAvailable When Towing aTrailer See Operator's Man-ual
*Whenyou establishthe electrical connectiontothe trailer,Active Blind Spot Assistis unavailable.
Pressthe left-handTouch Control and acknowledgethe display message.
Drive More Slowly*You are drivingtoofastforthe selectedvehicle level.
In ordertoadjustthevehicle level,you must not drive at speeds greaterthan37mph (60 km/h).
In ordertoadjustthevehicle level during trailer operation,you must not drive at speeds greaterthan19mph(30 km/h).
448Displaymessages andwarning/indicator lamps

Display messagesPossible causes/consequences andPPSolutions
Active Lane Keeping AssistInoperative
Consult aqualified specialistworkshop.
Malfunction Drive at Max.50 mph
*AIRMATIC is functioning onlytoa limitedextent. Thevehicle's handlingcharacteristics may be affected.
NOTEThe tires ofthe front axle orthe frontfenderscould be damagedbylargesteering movements
Avoid largesteering movements while driving and listenfor scraping sounds.
Ifyou hear scraping sounds, pullover andstopthevehicle safely, paying attentiontoroad and traffic con‐ditions, and set a highervehicle level if possible.
Drive in a manner appropriateforthe current level, but do notexceed 50mph (80 km/h).
Visit aqualified specialistworkshop.DYNAMICBODYCONTROL is malfunctioning. Thevehicle's handlingcharacteristics may be affected.
Do not drive at speeds greaterthan 50mph (80 km/h).
Visit aqualified specialistworkshop.
Blind Spot Assist Not Avail-able When Towing a TrailerSee Operator's Manual
*Whenyou establishthe electrical connectiontothe trailer, Blind Spot Assist is unavailable.
Pressthe left-handTouch Control and acknowledgethe display message.

Beltsee Seat belt
Blind Spot Assist......................................219Function ...............................................219Switching on/off ................................. 222System limitations ...............................219
Blowersee Climatecontrol
Bluetooth®............................................... 265Activating/deactivating .......................265Information .......................................... 265
Bluetooth®audioActivating .............................................341De-authorizing (de-registering)thedevice .................................................. 341Information .......................................... 339Overview .............................................339Searchingfor a track ........................... 341Searchingfor and authorizingthedevice .................................................. 340Selecting a media player ...................... 341Switching device via NFC ..................... 341
Brake Assist SystemseeBAS (Brake AssistSystem)
BrakefluidNotes .................................................. 428
Brakeforce distributionEBD (electronic brakeforce distribu‐tion) .....................................................175
BrakesABS (Anti-lock Braking System) ...........171Active Brake Assist..............................175BAS (Brake AssistSystem) ...................172Driving tips ..........................................14 8EBD (electronic brakeforce distribu‐tion) .....................................................175HOLD function .....................................195Limited braking effect (salt-treatedroads) ..................................................14 8New/replaced brakepads/brakediscs ....................................................147Notes on breaking-in a newvehicle .....147
Braking assistanceseeBAS (Brake AssistSystem)
BreakdownChanging a wheel .................................41 5Overview ofthe help functions ..............18Roadside Assistance ............................. 23
Tow-starting ........................................ 386Towingaway........................................ 382Transportingthevehicle ......................384
Breakdownsee Flat tire
Burmester®surround sound system.....349Adjustingthe balance/fader ............... 350Adjustingthe soundfocus ................... 350Adjusting treble, mid-range and basssettings ............................................... 350Automaticvolume adjustment .............350Calling upthe sound menu .................. 349Information .......................................... 349Switchingthe surround sound on/off.............................................................350
ButtonsSteering wheel .....................................227
C
Call listMaking a call ........................................312Overview ..............................................312
Calling upthe sound menu
Burmester®surround sound system ... 349
Index497

Vehicle .................................................. 28
DateSettingthe time and date automati‐cally ..................................................... 264
Daytimerunning lamp modesee Daytimerunning lights
Daytimerunning lights...........................127Switching on/off .................................127
Deactivating the alarm(ATA).................... 89
Dealershipsee Qualified specialistworkshop
Declaration of conformityWirelessvehicle components ................25
Decorativefoil (cleaning instructions)...................................................................362
Definitions (tires and loading)............... 409
DesignsMenu (on-board computer) .................. 229
Destination..............................................292Editing intermediate destinations ........281Editingthe previous destinations ........ 292External ...............................................293
Saving (currentvehicle position) ......... 292Saving asglobalfavorite...................... 292Storing a map position ........................ 292
Destination entry....................................277Entering 3wordaddresses .................. 283Entering a POI or address ....................277Entering an intermediatedestination ...281Enteringgeo-coordinates .................... 282Selecting a contact ............................. 282Selecting a POI .................................... 280Selecting fromthe map ....................... 283Selecting previous destinations ...........280
Detecting inattentivenessseeATTENTION ASSIST
Diagnostics connection............................25
Digital Operator's Manual........................ 20
Digital speedometer............................... 232
DinghytowingseeTow-bar system
DIRECT SELECT lever...............................154Engaging drive position .......................15 6Engaging neutral ..................................15 5Engaging parkposition ........................15 5
Engaging parkposition automatically ..15 5Engagingreversegear .........................155Function ..............................................154
DisplayCare .................................................... 365
Display (multimedia system)Settings ...............................................263
Display (on-board computer)Displays onthe multifunction display .. 230
Display contentSettingthe additionalvaluerange ....... 229
Displaymessage..................................... 433Calling up (on-board computer) ...........433Notes .................................................. 433
Display messages

Active Blind Spot Asst. NotAvailable
WhenTowing aTrailer See Opera‐
tor's Manual........................................448
Active Brake AssistFunctions Cur‐
rently Limited See Operator's Man‐
ual.......................................................447
Active Brake AssistFunctions Limi‐
ted See Operator's Manual.................445
Active Distance AssistCurrently
Unavailable See Operator's Manual.....456
Active Distance AssistInoperative......456
Active Distance AssistNowAvailable
.............................................................456
IActive Headlamps Inoperative.....476
Active LaneKeeping Assist Camera
ViewRestricted See Operator's Man‐
ual....................................................... 456
Active LaneKeeping Assist Currently
Unavailable See Operator's Manual.....451
Active LaneKeeping Assist Inopera‐
tive...................................................... 452
ActiveParking Assist and
PARKTRONIC InoperativeSee Opera‐
tor's Manual........................................ 450
ActiveSteering Assist Currently
Unavailable See Operator's Manual.....450
ActiveSteering Assist Inoperative.......449
Adaptive Highbeam Assist Camera
ViewRestricted See Operator's Man‐
ual.......................................................478
Adaptive Highbeam Assist Currently
Unavailable See Operator's Manual.....478
Adaptive Highbeam Assist Inopera‐
tive......................................................477
ApplyBraketoShift from 'P'............... 464

EngineECOstart/stop function ......................150Engine number ....................................423Starting (emergency operationmode) ..................................................14 5Starting (RemoteOnline) .....................147Starting (start/stop button) .................145Starting assistance ..............................379Switching off (start/stop button) .........161
Engine dataDisplaying ............................................154
Engine number........................................ 423
Engine oil.................................................355Additives .............................................427Capacity .............................................. 428Checkingthe oil level usingthe oildipstick ............................................... 354Checkingthe oil level usingthe on-board computer ................................... 355MB-Freigabe or MB-Approval ...............428Quality ................................................. 428Topping up ...........................................355
EnteringcharactersFunction/notes .................................... 261
ESC (ElectronicStability Control)
see ESP®(ElectronicStability Program)
ESP®
Crosswind Assist .................................175
ESP®(ElectronicStability Program).......172Activating/deactivating .......................175Function/notes ....................................172
Exterior lightingCare .................................................... 364
Exterior lightingsee Lights
Exterior mirrors...............................134,13 5Anti-glaremode (automatic) ................135Automatic mirrorfolding function ........13 6Folding in/out .....................................134Operatingthe memory function ..........102Parking position ...................................135Setting .................................................13 4
External deviceLocking (child safety lock) ...................269
Eyeglasses compartment.......................106
F
Fatigue detectionseeATTENTION ASSIST
FavoritesAdding .................................................259Calling up ............................................ 259Deleting ............................................... 260Moving ................................................ 259Overview ............................................. 258Renaming ............................................ 259
FenderseeFront wheel arch
First-aid kit (soft sided).......................... 369
FlaconInserting/removing .............................14 2
Flat tire.....................................................370Changing a wheel .................................41 5MOExtended tires ................................370Notes ...................................................370TIREFIT kit ............................................371
FlattowingseeTow-bar system
Floor mats................................................12 0
Index507