2021 MERCEDES-BENZ GLC COUPE towing

Obser
vethefo llo wing notesif yo uwa ntto
re place thebatt eryyo urself :
R Alw aysre place afa ulty battery wit habatt ery
whic hmee tsthespecif icvehicle requ ire‐
men ts.
The vehicle iseq uipped withan AGMtech nol ‐
ogy batter y(A bso rbentGlas sMa t)or alith ‐
ium-io nbatt ery. Fu llve hicle functionality is
onl yguar anteed withan AGMbatt eryor lith‐
ium-ion battery. Fo rsaf etyre ason s,
Mer cedes-Ben zre comme ndsthat youon ly
use batteries whic hha ve been tested and
appr ovedfo ryo ur vehicle byMer cedes-Ben z.
R Carryove rde tach able parts,suc has vent
hos es,elbo wfitting orterm inal covers from
th ebatt erybeing replaced.
R Mak esur eth at theve nt hos eis alwa ys con‐
nect edtotheor iginal opening ontheside of
th ebatt ery.
Ins tallan yex istin gor supplied cellcaps.
Ot her wise, gases orbatt eryacid could
escape.
R Mak esur eth at detach able partsarere con‐
nect edinthesame way. To
w star ting ortowing away Pe
rm itted towing methods *
NO
TEDama gefrom automatic braking If
one ofthefo llo wing functionsis switc hed
on, theve hicle brak es aut omatically incer‐
ta in situat ions:
R ActiveBr ak eAssi st
R ActiveDis tance AssistDIS TRONI C
R HOLD functio n
R ActivePa rking Assist
To avo iddamag eto theve hicle, deactiv ate
th ese systems inthefo llo wing orsimilar sit‐
uation s: #
Dur ing towing #
Inacar wash Mer
cedes-Benz recomme ndstransp orting your
ve hicle inthecase ofabr eakdo wn,rath er than
to wing itaw ay. Fo
rto wing, useato w rope ortow bar withbo th
axle son thegr ound. Donotuse tow bar sys‐
te ms.
* NO
TEDama getotheve hicle duetotow‐
ing away inc orrectl y #
Obs erve theins truction sand noteson
to wing away. Ve
hicl eswith automatic transmiss ion Pe
rm itted towing methods
Bo th axle son
th egr ound Ye
s,maximum 31mile s
(50 km) at31 mp h(5 0km/h)
Fr ont axle
ra ised No
Re ar axle
ra ised Ye
s,ifth esteer ing wheel is
fi xe din thecent erposition
wit hast eer ing wheel lock Br
eakdo wnassis tance 29
7

4MA
TICvehicl es Pe
rm itted towing methods
Bo th axle son
th egr ound Ye
s,maximum 31mile s
(50 km) at31 mp h(5 0km/h)
Fr ont axle
ra ised No
Re ar axle
ra ised NoTo
tow wit hara ised axle: towing should be
per form ed byato wing company. To
wing theve hicl ewith both axle son the
gr ound #
Obser vetheno teson theper mitt edtowing
me thods (/page29 7). #
Mak esur eth at thebatt eryis con nect edand
ch arge d.
Obser vethefo llo wing pointswhen thebatt eryis
disc harged:
R The engin ecann otbe star ted R
The electr icpar king brak ecann otbe
re leased orapplied
R Vehicl eswith automatic transmiss ion:
The automatic transmiss ioncanno tbe shif‐
te dto position 005Cor005D
% Vehicl eswith automatic transmiss ion:If
th eaut omatic transmiss ioncann otbe shif‐
te dto position 005C,orthemultifunc tiondis‐
pla yin theins trument clusterdoes notsho w
an ything, have theve hicle transpor tedaw ay
( / pag e299). Atowing vehicle withlifting
eq uipment isrequ ired forve hicle transpor ta‐
tio n.
* NO
TEDama gedue totowing away at
exc essiv elyhigh speeds orove rlong dis‐
ta nces The
drivet ra in could bedamag edwhen tow‐
ing atexc essiv elyhigh speeds orover long
dis tances. #
Atowing speed of30 mph(50 km/h)
mus tno tbe exc eeded. #
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(/ page339). 298
Breakdo wnassis tance

#
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(/ page30 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(/ page86) . #
Deact ivat eAc tiveBr ak eAssi st
( / pag e19 0). #
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. *
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 e298). #
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. Br
eakdo wnassis tance 29
9

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
(/ page339).
R Information ontirepr essur ein thetir epr es‐
sur eta ble (/ page308).
Fu rther relat ed subje cts:
R Determ inin gth emaximum permissible load
(/ page31 4)
R Noteson tirepr essur e(/ page306). 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. 31
4
Wheels andtires

Ro
ofload All
mod els
Maxim umroof load 165lb (75 kg ) 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 4MATIC To
wing capacit y,unbr aked Model
Towing capacit y,
unbr aked
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 . #
Theto ngu ewe ight mustno tbe belo w
11 0.2 lbs(50 kg). #
Use ato ngu ewe ight that isas clo seas
poss ibletothemaximum permissible
to ngu ewe ight . Missin
gva lues werenotav ailable atthetime of
going topress.
To ngue weight Model
Maximum
to ngue
we ight
GL C300 4MATIC Load
capacity Model
Maximum
load
All models Pe
rm issible rear axle load (traile roper ation ) Miss
ingvalues werenotav ailable atthetime of
going topress. Te
ch nica lda ta 34
9

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Clean thewindshield.
Blind SpotAssist Current ly
Unavailable SeeOperator 's
Manual *B
lind SpotAss istis temp orarily una vailable.
The system limits have been reac hed (/page19 5).
Once 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 (/page19 5).
Once thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again. 37
8
Display messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Drive on.
or #
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 (/page19 8).
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. Displa
ymessag esand warning/ indic ator lam ps 37
9

Á
KeyNo tDe tected (red displ ay
messa ge)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 356
Á KeyNo tDe tected (whit edis‐
pl ay messa ge)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 355
0075 LeftSid eCu rtain Airbag Mal‐
fun ction ServiceRe quired (Exam ple) .....3 52
00C5 Lowe ring.............. <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 381
ä Malfunctio nDr ive at Ma x.50
mp h<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 380
: Malfunction SeeOperator’s
Manual... ............................................... 357
Á ObtainaNe wKe y<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 355
ç Off<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 375
00D9 Off... ............................................. 373
0049 Parking Brak eSee Opera tor's
Manua l........ ..... ...... ...............................3 68
0077 Please Correct Tire Pressur e... ..... 392
0049 Please Release Parking Brak e.. .....3 71
006F Rear Lef tBac kres tNo t
La tched (exa mp le).................................3 62 Á
Replace KeyBat tery <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 355
003D SeeOperator's Manua l......... .......3 89
0075 SRSMalfunction Service
Re quired ................................................ 352
Ù Steer ing Malfunct ionIncreased
Ph ysical Effort See Operator's Manua l.. 360
Ù Steer ing Malfunct ionStop
Immediat elySee Oper ator's Manual ...... 361
003D Stop Vehicle LeaveEngi neRun‐
ning <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ....390
003D Stop Vehicle SeeOper ator's
Manual... ............................................... 389
00C4 Stop Vehicle Vehicle TooLo w....... 381
ç Suspended ................................... 375
: SwitchOf fLig hts <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 358
: SwitchOn Hea dlamps<0011001100110011001100110011001100110011001100110011001100110011
00110011> 358
0049 Turn On theIgnit iontoRelease
th ePa rking Brak e..................................3 72
0072 Vehicle Ready toDrive Swi tch
th eIgnit ionOffBef oreEx iting ............... 360 00C4
Vehicle Rising Please Wait............ 382
00C4 Vehicle Rising ...............................3 82
0077 Warning Tire Malfunction. ............ 392
0077 Wheel Sensor(s) Missing..............3 91
Ac tiveBli nd Spo tAssi stCur rently
Un available SeeOper ator' sMan ual.......3 78
Ac tiveBli nd Spo tAssi stInoper ative.... .. 379
Ac tiveBli nd Spo tAss t.No tAv ailable
When Towing aTr ailer SeeOpera‐
to r's Manua l........ .................................. 379
Ac tiveBr ak eAssi stFunctio nsCur‐
re ntl yLim ited See Operator's Manua l...386
Ac tiveBr ak eAssi stFunctio nsLim i‐
te dSee Oper ator's Manual. ...................3 87
Ac tiveDis tance AssistCur rently
Un available SeeOper ator' sMan ual.......3 75
Ac tiveDis tance AssistInoper ative.... .....3 75
Ac tiveDis tance AssistNo wAv ailable.. ..375 Inde
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