brake MERCEDES-BENZ GLS 2021 Owners Manual

4
Ultrasonic sensors
5 Rear vie wcam era
% Depen dingon theve hicle's equipment, the
ra dar sensor sar eint egratedbehind the
bum persand/or behindthera diat orgrill.
Some driving anddriving safetysy stems use
camer asaswellas radar orultr asonic sensors
to monit orthear ea infront of,behind ornext to
th eve hicle.
Ke ep thear eas around thesensor sand camer as
fr ee ofdir t,ice orslush (/page332). Thecam‐
er as and sensor smus tno tbe covered, forex am‐
ple bybicy clerack s, overhanging loads,sticke rs,
fo ilor foils toprotect agains tst one chipping .
Ad dition allicense platebr ac kets can impai rth e
function oftheultr asonic sensors,in par ticular .
In theeve ntofdama georase vere impact inthe
ar ea ofthesensor s,ha ve thefunc tion ofthe
sensor sch eckedat aqu alif ied spec ialistwo rk‐
shop. Have damag eor stone chipping inthear ea
of thecamer asrepair edataqu alif ied spec ialist wo
rkshop. Ifth esensor sor camer asaredam‐
ag ed, some driving systems anddriving safety
sy stems mayno long erfunc tion proper ly. Ov
ervie wof driving systems anddriving
saf etysy stems R
ABS(Ant i-lockBra king System)
(/ page203)
R Off-road ABS (/page203)
R BAS(Bra keAssis tSyst em) (/page203)
R ESP®
(Elect ronic Stability Program)
(/ page203)
R ESP ®
Cr osswind Assist(/ page206)
R ESP ®
trailer stabiliz ation(/ page20 6)
R EBD(Elect ronic Brakeforc eDis tribution)
(/ page20 7)
R STEER CONTR OL(/ page 207)
R ActiveBr ak eAssi st(/ pag e20 7)1
R Cruise control (/ page21 2) R
DSR (Dow nhillSpe edRegulatio n)
(/ page 214)
R ActiveDis tance AssistDIS TRONI C
(/ page 216)1
R ActiveSpe edLimi tAssi st(/ pag e220) 2
R Route-based speedadap tatio n
(/ page 221)2
R ActiveSt eer ing Assis t(/ page222) 2
R ActiveLa ne Chang eAssi st(/ pag e22 4)2
R ActiveEmerg encyStop Assis t(/ page226) 2
R ActiveTr af fic Ja m Assi st(/ pag e22 7)2
R Hill StartAs sis t(/ page22 7)
R HOL Dfun ction (/ page22 8)
R AIRMA TIC(/ page22 9)
R E-AC TIVE BODY CONTR OL(/ page236)
R Parking AssistPA RK TRONI C(/ page24 4)
R Rear vie wcam era(/ page24 9)
R Surround viewcam era(/ page25 2)
1 This function includes subfunctions whic har eon lyavailable incon junction withth eDr iving Assistance Packag e.
2 This function iscoun try- dependen tand onlyav ailable incon junction withth eDr iving Assistance Packag e. 202
Drivin gand parking

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
LOW RANGE Malfunct ion
To Park, Apply Brake *T
hetransf ercase ismalfunctionin g. #
Donotshif tth etra nsf ercase. #
Use theelectr icpar king brak eto secur eth eve hicle agains tro lling away. #
Con sult aqu alif ied spec ialistwo rkshop.
LOW RANGE Shifting Can-
celed Please Reactivate *T
hetransf ercase didnotper form thege ar chang e. #
Repeat thege ar chang e. #
Ensur eall shif tingcon dition sar eme t(/ page19 0).
LO WRA NG EMa lfunctio n *T
hetransf ercase ismalfunctionin g. #
Donotshif tth etra nsf ercase! #
Use theelectr icpar king brak eto secur eth eve hicle agains tro lling away. #
Con sult aqu alif ied spec ialistwo rkshop.
LOW RANGE StopApply
Parking Brake *T
hetransf ercase ismalfunctionin g. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions. #
Apply theelectr icpar king brak e. #
Wher eneces sary,also secureth eve hicle agains tro lling away. #
Eng agepa rk position 005D.
LOW RANGE Max.Speed 6
mph *T
hemaximum speedof6mp h(1 0 km/h) forth ege ar chang ehas been exceed ed. Disp
lay mess ages and warning/ indic ator lam ps 42
1

Tr
ansmis sion Di
spla ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
Only Shift to'P' when Vehi-
cle isStationary *
Pa rk position 005Dcan beeng aged onlywhen theve hicle isstatio nary. #
Tostop, depr essthebr ak epedal. #
Shif tth etra nsmiss iontopar kposition 005Dwhile theve hicle isstatio nary.
App lyBra ketoShi ftfrom
'P' *
Yo uha ve attem pte dto shif tth etra nsmiss ionout ofpar kposition 005Dand intoano ther tra nsmiss ionposition . #
Depr essthebr ak epedal. #
Select transmiss ionposition 005B,005Eorneutr al005C.
To Deselec tP or N,
Depress Brakeand Start
En gine *
Yo uha ve attem pte dto shif tth etra nsmiss ionout ofpar kposition 005Dorneutral 005Cand intoano ther tra nsmiss ion
position . #
Depr essthebr ak epedal. #
Chang eth etra nsmiss ionposition . #
Startth eengine.
Apply Braketo Shift toDor
R *
Youha ve attem pte dto select transmission position005Bor005E. #
Depr essthebr ak epedal. #
Select transmiss ionposition 005Bor005E.
Apply Braketo Shift to'R' *
Youha ve attem pte dto select transmission position005E. #
Depr essthebr ak epedal. #
Select transmiss ionposition 005E. Displa
ymessag esand warning/ indic ator lam ps 425

Br
ak es Di
spl aymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0049 (US Aonl y)
0024 (Canada only)
Parking BrakeSeeOpera-
tor's Manual *
The yello w0024 indicator lam pis lit. The elect ric pa rking brak eis malfun ctionin g.
To appl y: #
Swi tchth eignition offand switc hit bac kon. #
Appl yth eelectr icpar king brak emanually (/page19 9).
If it is no tpo ssi ble to appl yth eelectr icpar king brak e: #
Consult aqu alif ied spec ialistwo rkshop. #
Wher enecessar y,also secureth epar kedve hicle agains tro lling away.
* The yello w0024 indicator lam pand there d0049 (USAonl y)or 0024 (Canada only)indicat orlam par elit. The elec‐
tr ic par kingbr ak eis malfunc tioning.
To release: #
Swit chtheignition offand switc hit bac kon. #
Release theelectr icpar king brak emanually (/page19 9).
or #
Release theelectr icpar king brak eaut omaticall y(/ page19 9).
If it is still no tpossible torelease theelectr icpar king brak e: #
Donotcon tinue driving. Consult aqu alif ied spec ialistwo rkshop. 428
Displa ymessag esand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0049 (US Aonl y)
0024 (Canada only)
Please Release Parking
Brake *
The red0049 indicat orlam p(US Aonl y)or 0024 indicat orlam p(Canada only)isflashin g.
The electric par kingbr ak eis applied whileyouar edr ivin g:
R Aco nd ition forau tomatic release oftheelectr icpar king brak ehas notbeen fulfilled (/page19 9).
R Youar eper form ing emer gency braki ng using theelectr icpar king brak e(/ page19 9). #
Checkth econ ditions forau tomatic release oftheelectr icpar king brak e. #
Release theelectr icpar king brak emanually . Displa
ymessag esand warning/ indic ator lam ps 43
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0049 (US Aonl y)
0024 (Canada only)
Turn Onthe Ignit ionto
Release theParking Brake *
The red0049 (USAonl y)or 0024 indicat orlam p(Canada only)islit.
Yo uha ve attem pte dto release theelectr icpar king brak ewit hth eignition switchedoff. #
Switc hon theignition .
0027 (US Aonl y)
004D (Canada only)
Check BrakeFluid Level *T
her eis insuf ficie ntbrak efluid inthebr ak efluid reser voir. &
WARNIN GRisk ofan acci dent dueto low brak efluid leve l
If th ebr ak efluid leve lis toolow, thebr aking effect and thebr aking charact eristic sma ybe impair ed. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.
Do notcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. #
Donotadd brak efluid. 432
Displaymes sagesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0026 Check BrakePadsSee
Operator' sManual *T
hebrak epads have reac hed thewe arlimit . #
Con sult aqu alif ied spec ialistwo rkshop. Dr
iving systems Displa
ymess ages
Possible causes/conseq uencesand0050 0050
Solutions
é ATTE NTION ASSISTInoper-
ative *A
TTENTION ASSISTis malfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop.
é ATTENTION ASSIST: Take a
Break! *A
TTENTION ASSISThas detected fatig ue oran incr easing lack ofconc entration onthepar tof thedr iver
(/ page26 1). #
Ifneces sary,take abr eak . Dis
playmes sagesand warning/ indic ator lam ps 433

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
007A
0025
00E5 Inoperat iveSee Operator' s
Manual *
EBD ,ABS andESP®
aremalfunct ioning.
Ot her driving systems anddriving safetysy stems (e.g. BAS)ma yal so be mal functi oning. &
WARNIN GRisk ofskid ding ifEBD, ABSandESP®
are malfuncti oning
The wheelsma ybl oc kdu ring braki ng and ESP®
do es notpe rfor m anyve hicle stabiliz ation.
The steer ability andbraking charact eristic sar ehea vilyim pair edand thebr aking distance mayincr ease. Inaddi‐
tio n,other driving safetysy stems areswitc hedoff. #
Drive on car efull y. #
Have thebr ak esy stem checkedimmediat elyat aqu alif ied spec ialistwo rkshop. Act
ive Brake Assist Func-
tions Currently LimitedSee
Operator's Manual *
Ve hicl eswith theDr iving Assistance Packag e:Ac tiveBr ak eAssi stwit hcr oss- traf fic functi on,Evasi ve Steer ing
Assis tor PRE‑S AFE®
PL US arete mp orarily una vailable oronl ypar tiall yav ailable.
Ve hicl eswithout theDr iving Assistance Packag e:Ac tiveBr ak eAssi stistemp orarily una vailable oronl ypar tiall y
av ailable.
The ambie ntcon dition sar eout side thesy stem limits (/page20 7). #
Drive on.
As soon astheambient conditions arewit hin thesy stem limits, thesy stem will become available again. #
Ifth edispla ymessag edoes notdisappear ,st op theve hicle inaccor dance withth etra ffic con dition sand restar t
th eengine. 450
Displa ymessag esand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Act ive Brake Assist Func-
tions Limited SeeOpera-
tor's Manual *
Ve hicl eswith Drivin gAss istanc ePa ckag e:Ac tiveBr ak eAssi stwit hcr oss- traf fic functi on,Evasi ve Steer ing
Assis tor PRE‑S AFE®
PL US ismalfunct ioning.
Ve hicl eswithout Drivin gAss istanc ePa ckag e:Ac tiveBr ak eAssi stismalfun ctionin g. #
Consult aqu alif ied spec ialistwo rkshop. Mer
cedes meconne ct Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
Mercedes meconn ect
Servic esLimited SeeOper-
ator's Manual *T
hevehicle functionsformalfu nction detection arere strict ed.
At leas tone ofthemain functionsof theMer cedes meconnect system ismalfunct ioning. #
Obser vetheno teson thediagnos ticsconnect ion(/ page27 ). #
Consult aqu alif ied spec ialistwo rkshop.
0053 Inoperative *A
tle as tone ofthemain functionsof theMer cedes meconnect system oroftheSOS emer gency callsy stem is
malfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop. Displa
ymessag esand warning/ indic ator lam ps 45
1

Br
ak efo rc edis tribut ion
EB D(elec tronic brak efo rc edis tribu‐
tion )..................................................... 207
Br ak es
ABS (Anti-loc kBr aking System) ........... 203
Ac tiveBr ak eAssi st<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 207
BA S(Br akeAssi stSystem) .................. 203
Dr iving tips.......................................... 173
EBD (electr oni cbr ak efo rc edis tribu‐
tion )........................ ............................. 207
HOLD function .....................................2 28
Limi tedbr aking effect (sa lt-tr eated
ro ads) .................................................. 173
Ne w/r epla ced brak epad s/brake
discs ........................ ............................ 171
No teson breaking-in ane wvehicle ..... 171
Po st-col lisi on brak e <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> .....51
Br akin gass ista nc e
see BAS(Br akeAssi stSystem)
Br eakdo wn
Changing awheel ................................ 379
Ov ervie wof thehelp functions...... ........ 18
Ro adside Assis tance <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .....24
To w- star tin g.................................... .... 353
To wing away <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 350Tr
ans portingth eve hicle ......................3 51
Br eak down
see Flattir e
Butt ons
St eer ing wheel .....................................2 76 C
Calls Mer cedesme ...................................... 304
Cam era .....................................................2 39
Camer a
see 360° Camer a
see Rear vie wcam era
Car key
see Smar tKey
Car wash
see Care
Car wash (car e)....................................... 328
Car -to-X -Commu nication
Displa yinghazar dwa rnings ............ .....2 98
Car e....... ...................................................334
Air -water duct ......................................328 Au
tomatic carwash ............................. 328
Car pet.................................................3 34
Decor ativefo il .....................................3 32
Displ ay<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 334
Ext eriorlighti ng<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 332
Hea dline r<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 334
Pa int wo rk <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 331
Pl as tic trim <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 334
Po we rwa sher ...................................... 330
Re alwo od/tr imelements ...................3 34
Re ar vie wcam era ................................ 332
Ru nning boards <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ...........332
Sea tbe lts <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>334
Sea tco ver..... ...................................... 334
Sensor s..... .......................................... 332
Sur round viewcam era ........................ 332
Ta ilpipes .............................................. 332
Tr ailer hitch <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 332
Wa shing byhand ................................. 331
Wheels/r ims....................................... 332
Wi ndo ws <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 332
Wi per blades .......................................3 32
Car gocomp artment cover
Ext end ing/retra cting <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 128
No tes ................................................... 128 47
8
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