towing MERCEDES-BENZ GLC 2021 User Guide

#
Atowing distan ceof30 miles(50 km)
mus tno tbe exc eeded. &
WARNIN GRisk ofacci dent whento wing
a ve hicle whichis toohea vy
If ano ther vehicle istow- star tedor towe d
aw ay,its weight mustno texc eed theper mis‐
sible gross mass ofyour ow nve hicle, other‐
wise thefo llo wing could occur:
R The towing eyema ybecome detach ed.
R The vehicle/tr ailercombination may
sw erve oreve nro llo ver. #
Ifano ther vehicle istow- star tedor
to we daw ay,its weight mustno texc eed
th eper missible gross mass ofyour ow n
ve hicle. If
ave hicle mustbe tow- star tedor towe daw ay,
its per missib legross weight mustno texc eed the
per missible gross weight oftheto wing vehicle. #
Information ontheper missible gross mass of
th eve hicle canbefound ontheve hicle iden‐
tif ication plate(/ page350). #
Vehicl eswith automatic transmiss ion:Do
no topen thedr iver's door orfront passeng er
door ,ot her wise theaut omatic transmiss ion
aut omaticall yshif tsto position 005D. #
Installth eto wing eye(/ page31 1). #
Fasten theto w bar .
* NO
TEDama gedue toinc orrect connec‐
tion oftheto w bar #
Onlyconnect theto w rope ortow bar to
th eto wing eyes. #
Deact ivat eth eaut omatic locking mechanism
(/ page71 ). #
Donotactiv ateth eHOLD function. #
Deact ivat eth eto w- aw ay alar m(/ page88) . #
Deact ivat eAc tiveBr ak eAssi st
( / pag e19 8). #
Vehicl eswith automatic transmiss ion:
Shif tth eaut omatic transmiss iontoposition
005C. #
Release theelectr icpar king brak e. &
WARNIN GRisk ofacci dent dueto limi‐
te dsaf ety-re lat ed func tionsdur ing the
to wing proce ss
Saf ety-re lat ed func tionsar elimit edorno lon‐
ge rav ailable inthefo llo wing situat ions:
R The ignit ionisswitc hedoff.
R The brak esy stem orpowe rst eer ing sys‐
te m ismalfu nctioning.
R The ener gysupp lyor theon- boar delectr i‐
cal system ismalfunct ioning.
When your vehicle isthen towe daw ay,signif ‐
icant lymor eef fort ma ybe requ ired tosteer
and brak eth an isno rm allyre qu ired. #
Use ato w bar . #
Mak esur eth at thesteer ing wheel can
mo vefreely beforeto wing theve hicle
aw ay. Br
ea kdo wnassista nce 30
9

*
NO
TEDama gedue toexcess ive tracti ve
po we r If
yo upull away shar ply, thetractiv epo we r
ma ybe toohigh andtheve hicles couldbe
damag ed. #
Pull away slo wlyand smoo thly. Lo
adi ng the vehicl efo rtr ans port #
Obser vetheno teson towing away
( / pag e308). #
Connec tth eto w bar totheto wing eyein
or der toload theve hicle.
% Youcan also attachth eto w bar tothetrailer
hitc h. #
Vehicl eswith automatic transmiss ion:
Shif tth eaut omatic transmiss iontoposition
005C.
% Ve
hicl eswith automatic transmiss ion:
The automatic transmiss ionmaybe locked
in posit ion005Dintheeve ntofdama getothe
electr icalsystem. Toshif tto 005C ,pr ov ide the on-boar
delectr icalsystem withpo we r
( / pag e306). #
Load theve hicle ontoth etra nspor ter. #
Vehicl eswith automatic transmiss ion:
Shif tth eaut omatic transmiss iontoposition
005D. #
Use theelectr icpar king brak eto secur eth e
ve hicle agains tro lling away. #
Onlysecur eth eve hicle bythewheels.
Ve hicl eswith ADSPL US (Adap tiveDam ping
Sy stem PLUS) &
WARNIN GRisk ofan acci dent when
tr ansp orting vehicles withAd aptive
Dam pingSy stem PLUS
When transpor tingvehicles withAd aptive
Dam pingSy stem PLUS, theve hicle/tr ailer
combination maybegin torock and star tto
skid. #
Load theve hicle correctl yont oth e
tr ans porter . #
Secur eth eve hicle onallfour wheel s
wit hsuit able tensi oni ng stra ps. #
Donotexc eed themaximum permissi‐
ble speed of35 mph(6 0km/h) when
tr anspo rting. *
NO
TEDama getotheve hicle from secur‐
ing itincor rectl y #
Afterloa ding, theve hicle mustbe
secur edon allfour wheel s.Ot her wise,
th eve hicle could bedamag ed. #
Aminimum distance of8in (20 cm)
up wa rdsand 4in (10 cm) down wards
mus tbe kept tothetranspor tplatf orm. #
Secur eth eve hicle onallfour wheel saf te r
loading . 31
0
Brea kdo wnassista nce

R
Maximum permissible load3com prises the
gr os swe ight ofall vehicle occupants, load
and luggage.
R Recomme ndedtirepr ess ure 1forcold
tir es. The recomme ndedtirepr ess ures are
va lid forth emaximum permissible loadand
up tothemaximum permissible vehicle
speed.
Please alsonote:
R Information onper missib lewe ight sand loads
on theve hicle identif ication plate
(/ page350).
R Information ontirepr essur ein thetir epr es‐
sur eta ble (/ page31 9).
Fu rther relat ed subje cts:
R Determ inin gth emaximum permissible load
(/ page325)
R Noteson tirepr essur e(/ page31 7). Ste
psforDe term ining Correct Load Limit The
follo wing steps have been developed as
re qu ired ofall manuf acturersunder Title 49, Co
de ofU.S. Feder alRe gulations, Part57 5, pur‐
sua nttothe"N ational Traf fic and MotorVe hicle
Saf etyAc tof 1966". #
(1):Locat eth est at emen t"The combined
we ight ofocc upant sand cargoshould never
exc eed XXX kgorXXX lbs." onyour vehicle's
placar d. #
(2): Determ ine thecombin edweight ofthe
dr iver and passeng ersth at will beriding in
yo ur vehicle. #
(3): Subtr actthecombin edweight ofthe
dr iver and passeng ersfrom XXX kgor
XXX lbs. #
(4): The resulting figur eeq uals theav ailable
amoun tof car goand luggageload capac ity.
Fo rex am ple, ifth e"XXX" amount equals
14 00 lbs. and ther ewill befive occupant s
15 0lb pas seng ersin your vehicle, the
amoun tof available cargoand luggageload
capac ityis65 0lbs. (140 0-75 0(5 x15 0) =
650 lbs.) #
(5):De term ine thecombin edweight oflug‐
ga ge and cargobein gloaded ontheve hicle.
That weight mayno tsaf elyexc eed theav aila‐ ble
cargoand luggageload capac itycalc ula‐
te din step 4. #
(6): Ifyo ur vehicle willbetowing atrailer ,
load from your trailer willbetrans ferred to
yo ur vehicle. Consult this manual todeter‐
mine howthis reduces theav ailable cargo
and luggageload capac ityofyour vehicle.
% Notall vehicles areper mitt edtotow a
trailer .To wing atrailer isonl yper mittedifa
tra iler -hit chisins talled. Please consult an
aut hor ized Mercedes -Benz dealer ifyo uha ve
an yqu estion sabout towing atrailer with
yo ur vehicle.
Ev en ifyo uha ve cal cul ated thetot alload care‐
full y,yo usho uld still mak esur eth at themaxi‐
mum permissible gross weight andthemaxi‐
mum gross axle weight rating ofyour vehicle are
no texc eeded. Details can befound ontheve hi‐
cle identif ication plate. Wheels
andtires 325

Maximum
gradien tcli mbing ability
The vehicle's gradient climbing abilitydepends
on thewe ight distribution intheve hicle, thete r‐
ra in con dition sand thero ad sur face condi tions.
The specified va lue applies inthefo llo wing
cases :
R The vehicle isready todrive
R The road sur face condi tions andthus trac‐
tio nar egood
A gradient climbingabilit yof 100% corresponds
to an incline of45 °.
Obse rveth eno teson driving inmount ainous ter‐
ra in (/ page14 9).
Mi ssing va lues werenotav ailable atthetime of
going topress. Model
Maximumgra‐
dien tcli mbing
abil ity
All mode ls Tr
aile rhitc h Gene
ralno teson thetrailer hitch Modif
ications totheengine cooling system may
be neces sary,dependin gon theve hicle model.
The retrof itti ng ofatrai le rhi tc his only perm issi‐
ble ifato wing capac ityisspec ified inyour vehi‐
cle documents.
Fu rther information canbeobt ained ataqu ali‐
fi ed specialis two rkshop. To
wing capacit y The
tongu ewe ight isno tinc luded intheto wing
capac ity.
Missi ngvalues werenotav ailable atthetime of
going topress. To
wing capacit y,brak ed (at aminim umstar t-
of fgr adeabi lityof12%) Model
Towing capacit y,
br ak ed
GL C300
GL C300 4MATIC To
wing capacit y,unbr aked Model
Towing capacit y,
unbr aked
GL C300
GL C300 4MATIC Maximal
tongue weight andload capacity *
NO
TEDama gecau sed bythetrailer
comin gloose If
th eto ngu ewe ight used istoolow, the
tr ai le rma ycome loose . Te
ch nica lda ta 36
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Blind SpotAssist Current ly
Unavailable SeeOperator' s
Manual *B
lind SpotAss istis temp orarily una vailable.
The system limits have been reac hed (/page20 2).
On ce thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again. #
Drive on .
or #
Ifth edispla ymessag edoes notdisappear ,st op theve hicle inaccor dance withth etra ffic con dition sand restar t
th eengine. #
Ifneces sary,cle an there ar bum per.If th ebum perisespeciall ydir ty,th esensor sin thebum permaybe mal‐
func tioning.
Blind SpotAssist Inopera-
tive *B
lind SpotAss istis malfun ctionin g. #
Consult aqu alif ied spec ialistwo rkshop.
Blind SpotAssist NotAvail-
able When Towing aTrailer
See Operator's Manual *W
hen youes tablish theelectr icalconnect iontothetra iler ,Blind SpotAssis twill beuna vailable. #
Press thelef t-hand Touc hCon trol and ackn ow ledg eth edispla ymessag e.
Act ive Blind SpotAssist
Current lyUnavailable See
Operator 'sManual *A
ctiv eBli nd Spo tAssi stistemp orarily una vailable.
The system limits have been reac hed (/page20 2).
On ce thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again. #
Drive on .
or Dis
playmes sagesand warning/ indic ator lam ps 39
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Ifth edispla ymessag edoes notdisappear ,st op theve hicle inaccor dance withth etra ffic con dition sand restar t
th eengine.
Act ive Blind SpotAssist
Inoper ative *A
ctiveBli nd Spo tAssi stismalfun ctionin g. #
Consult aqu alif ied spec ialistwo rkshop.
Act ive Blind SpotAsst. Not
Availabl eWhen Towing a
Trailer SeeOperator's Man-
ual *W
hen youes tablish theelectr icalconnect iontothetra iler ,Ac tiveBli nd Spo tAssi stwill beuna vailable. #
Press thelef t-hand Touc hCon trol and ackn ow ledg eth edispla ymessag e.
Act ive Lane Keeping Assist
Current lyUnavailable See
Operator 'sManual *A
ctiveLane Keeping Assistis temp orarily una vailable.
The ambien tcon dition sar eouts idethesy stem limits (/page205).
As soon astheambient conditions arewit hin thesy stem limits, thesy stem will become available again.
Ve hicl eswith Activ eSte ering Assis t:The camer avie wma ybe limit edbythewindshield. #
Drive on.
Ve hicl eswith Activ eSte ering Assis t:Ifth edispla ymessag edoes notdisappear : #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Clean thewindshield.
Act ive Lane Keeping Assist
Inoper ative *A
ctiveLane Keeping Assistis malfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop. 392
Displa ymessag esand warning/ indic ator lam ps

Á
KeyNo tDe tected (red displ ay
messa ge)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 368
Á KeyNo tDe tected (whit edis‐
pl ay messa ge)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 367
0075 LeftSid eCu rtain Airbag Mal‐
fun ction ServiceRe quired (Exam ple) .....3 64
00C5 Lowe ring.............. <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 394
ä Malfunctio nDr ive at Ma x.50
mp h<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 393
: Malfunction SeeOperator’s
Manual... ............................................... 369
00C4 Max.Speed 12mp h<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 395
î Max.Spee d25 mph<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 388
î Notin theCur rent Drive Pr o‐
gr am <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .....388
Á Obtain aNe wKe y<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 367
ç Off<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 387
00D9 Off<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 385
0049 Parking Brak eSee Opera tor's
Manua l........ ................ ..........................380 0077
PleaseCor rect Tire Pressur e... ..... 405
0049 Please Release Parking Brak e.. .... 383
006F Rear Lef tBac kres tNo t
La tched (exa mp le).................................3 74
Á Replace KeyBat tery <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 367
003D SeeOperator's Manua l......... .......4 02
0075 SRSMalfunction Service
Re quired ................................................ 364
Ù Steer ing Malfunct ionIncreased
Ph ysical Effort See Operator's Manua l.. 372
Ù Steer ing Malfunct ionStop
Immediat elySee Oper ator's Manual ...... 373
003D Stop Vehicle LeaveEngi neRun‐
ning <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ....403
003D Stop Vehicle SeeOper ator's
Manual... ............................................... 402
00C4 Stop Vehicle Vehicle TooLo w....... 394
ç Suspended ................................... 387
: SwitchOf fLights.... ......................3 70
: SwitchOn Head lamp s<0011001100110011001100110011001100110011001100110011001100110011
00110011> 370 0049
Turn On theIgnit iontoRelease
th ePa rking Brak e..................................3 84
0072 Vehicle Ready toDrive Swi tch
th eIgnit ionOffBef oreEx iting ................3 72
00C4 Vehicle Rising Please Wait............ 395
00C4 Vehicle Rising ...............................3 95
0077 Warning Tire Malfunction. ............ 405
0077 Wheel Sensor(s) Missing..............4 04
Ac tiveBli nd Spo tAssi stCur rently
Un available SeeOper ator' sMan ual.......3 91
Ac tiveBli nd Spo tAssi stInoper ative.... .. 392
Ac tiveBli nd Spo tAss t.No tAv ailable
When Towing aTr ailer SeeOpera‐
to r's Manua l......... ................................. 392
Ac tiveBr ak eAssi stFunctio nsCur‐
re ntl yLim ited See Operator's Manua l...399
Ac tiveBr ak eAssi stFunctio nsLim i‐
te dSee Oper ator's Manual. .................. 400
Ac tiveDis tance AssistCur rently
Un available SeeOper ator' sMan ual.......3 87 43
4
Inde x

F
Fa tig ue detection
see ATTENTION ASSIST
Fi rs t-aid kit(sof tsi ded) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> ......296
Fl aco n
Inse rting/ remo ving .............................. .1 39
Flat tire
Cha nging awhe el....... ........................... 340
MOExt ended tires ....... ........................... 297
No tes... .................................................2 96
TIREFIT kit............. ................................ 298
Flat towing
see Tow- bar system
Floor mats.................................................. 119
Fo ilco vering
Ra dar and ultrasonic sensors................ 171
Fr ag rance
see Perfume atomiz er
Fr ee sof tware.. ............................................ 36
Fr eq uencies
Tw o-w ayradio .................................. .....3 49
Fr ont airbag (driver ,fr ont passeng er).......4 3 Fr
ont passeng erseat
see Seat
Fu el
Ad ditiv es.......................................... .....3 54
E1 0.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 353
Fu elreser ve<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 355
Ga sol <004C005100480011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 353
Qua lity (gas oline ).<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 353
Re fuel ing.... ...........................................1 62
Sulfu rcont ent............ ........................... 353
Ta nk cont ent<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ...............355
Fu nction seat
see Door controlpanel
Fu ses
Bef orere placing afuse .................... ...... 312
Das hboard fuse box...............................3 14
Fu se assignment diagram...................... 312
Fu se boxin thecar gocom partmen t...... 315
Fu se boxin theengine compartmen t..... 313
Fu se boxin thefront -passen gerfo ot ‐
we ll................................................... .....3 14
No tes... ............................................. ..... 312
Fu ses
see Fuses G
Gar agedoor opener
Clea ring thememor y.... .........................1 68
Openi ngorclosi ngthedoor.. ................1 67
Pr ogr amming buttons. ........................... 165
Re sol ving problems ...............................1 67
Sync hronizi ngthero lling code.. .............1 67
Gasoli ne..................................................... 353
Gear shiftre comm endation......................1 60
Genui nepar ts....... .......................................22
Glide mode........... ......................................161 H
Handbr ake
see Electr icpar king brak e
Handlin gch aract eristics (unus ual)....... ...316
HANDS -FREEACCESS .................................. 76
Hazar dwa rning light s...............................1 23
Hazar doussubstances
Inf ormatio n............ .................................. 25
Head restra int
Fr ont (adjus tingmechanicall y).................9 4 Inde
x439

Pa
rtitioning net
At tach ing.. .............................................1 09
PA SSEN GERAIRBAGstatus displa y
see Automatic front pass engerfront
airb agshut off
Pa yload
Calculat ionexam ple.............................. 326
De term inin gth emaximum... ................. 325
Pe rfume
see Perfume atomiz er
Pe rfume atomizer
Inser ting/r emoving theflacon.. .............1 39
Se <00570057004C0051004A00110011001100110011001100110011001100110011
00110011> ......................................138
Pe rfume vial
see Perfume atomiz er
Pe riod out ofuse
Ac tivati ng/d eactiv ating standb ymode. .171
St andb ymode function.. .................. .....1 70
Pe rm itted towing methods.. .....................3 07
Pe ts inthe vehicl e...... .................................65
Plas tictrim (Car e)............ .........................2 92
Po we rsupp ly
Swi tching on(Start/S topbutt on).......... 141 Po
we rwa sher (care)................................. 289
Po we rwi ndo ws
see Side windo ws
PRE-S AFE®
(anticipat oryoccupant
pr otection)
Fu nctio n.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 51
PRE-S AFE®
Sound. ................................... 51
Re versing measur es.................................5 1
PRE-S AFE®
PL US (anticipat oryoccu‐
pant protection plus)
Fu nctio n.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 52
Re versing measur es.................................5 1
Pr ev entat ive occupa ntprotection sys‐
te m
see PRE-S AFE®
(anticipat oryoccu‐
pant protect ion)
Pr ofile
Cr eating ane wprofile ........................ ... 248
No tes... ............................................. ..... 246
Sel ecting profile op tions <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 248
Pr og rams
se eDY NA MIC SELE CT Pr
otecting theen vir onmen t
No tes... ....................................................2 2
Pr otection agains tcollision ...................... 227
Pullin gaw ay
see Driving tips Q
QR code
Re scue card.... ......................................... 31
Qualif iedspecialis two rkshop ...................2 8 R
Ra dar and ultrasonic senso rs
Dam ag<0048001100110011001100110011001100110011001100110011001100110011
00110011> ................................171
Ra dio
Ov ervie wof thefunc tionsand sym‐
bols... ..................................................... 274
Ra dio ope ratin gper mits <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ...350
Ra in-closing featur e
Slid ingsunr oof........... .............................84
Ra ising theve hicl e
Re ar oftheve hicle. ................................ 211 44
6
Inde x