2021 MERCEDES-BENZ GLB SUV ECU

#
Vehicl eswith atir epr ess uremonit oring
sy stem: Restar tth etir epr essur emonit oring
sy stem (/ page31 1).
Ex cep tion:thene wwheel isan emer gency
spa rewheel. Emer
gency spar ewheel No
teson theemer gency spar ewheel &
WARNIN GRisk ofacci dent caused by
inc orrect whe eland tiredimensi ons
The wheelor tiresize andthetir etype ofthe
emer gency sparewheel orspar ewheel and
th ewheel tobe replaced maydif fer. The
emer gency sparewheel orspar ewheel can
sign ifican tly im pair drivin gch aract eristic sof
th eve hicle.
To preve nthazardous situa tions: #
Adaptyo ur drivin gst yle accor dinglyand
dr ive car efull y. #
Neverins tallmor eth an oneemer gency
spa rewheel orspar ewheel that dif fers
in size . #
Onlyuse anemer gency sparewheel or
spar ewheel ofadif fere nt size briefly. #
Donotsw itchof fESP ®
. #
Have theemer gency sparewheel or
spar ewheel ofadif fere nt size replaced
at thenear estqu alif ied spec ialistwo rk‐
shop. Thenewwheel mustha ve the
cor rect dimensi ons. %
The deflate demer gency sparewheel is
sec ured intheemer gency sparewheel bag
in thecar gocom partmen tand issecur edto
th eadjus table cargocom partmen tfloor in
th elowe rposi tion.
Obser vethefo llo wing noteson remo ving an
emerg encysparewhee l:
R Beforestow ing theemer gency sparewheel,
mak esur eth er eis no air leftin thetir e.
If neces sary,allo wtheair toescape. R
Torelease airfrom thetir e: remo vethe
va lve cap ofthetir e.
R Press down theme talinse rtin theva lve
using apoint edobje ct,e.g. apen.
R Screw theva lve cap ontoth eva lve.
Obser vethefo llo wing noteson installing an
emer gency sparewheel:
R Chec kth etir epr essur eof theemer gency
spa rewheel installed. Correct thepr essur e
as neces sary.
R The maximum permissible speedwithan
emer gency sparewheel installed is50 mph
(80 km/ h).
R Donotins tallsno wch ains ontheemer gency
spa rewheel.
R Replace theemer gency sparewheel afte rsix
ye arsat thelat est,re ga rdless ofwe ar.
% Ve
hicl eswith atir epr ess urelos swa rn‐
ing system: Ifan emer gency sparewheel is
ins talled, thetir epr essur eloss warning sys‐
te m canno tfunction reliabl y.Onl yre star tth e
sy stem again when theemer gency spare
wheel hasbeen replaced withane wwheel. 33
4
Wheels andtires

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Adaptive Highbeam Assist
Currently Unavailable See
Operator' sManual *A
dap tiveHighbeam Assistis temp orarily una vailable.
The system limits have been reac hed (/page12 8). #
Drive on.
Once thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again. TheAdap tiveHig hbeam
As sist Now Available displaymes sagewill appear .
Adap tiveHig hbeam Assist
In oper ative *A
daptiveHighbeam Assistis malfunc tioning. #
Consult aqu alif ied spec ialistwo rkshop.
Hazard Warning Flashers
Malfunctioning *T
hehazar dwa rning lam pswitc his malfun ctionin g. #
Consult aqu alif ied spec ialistwo rkshop. Ve
hicl e Dis
playmessag es
Possible causes/conseq uencesand0050 0050
Solutions
0072 Vehicle ReadytoDrive
Switc hthe Ignit ionOff
Before Exiting *Y
ouarelea ving theve hicle when itis in are ady -to- dr ive st at e. #
When youlea vetheve hicle, switchof fth eignition ,secur eth eve hicle agains tro lling away and taketh eSmar t‐
Ke ywit hyo u. #
Ifyo udo notlea vetheve hicle, switchof fth eelectr icalconsumer s,e.g. theseat heating. Other wise, the12 V
batt eryma ydisc hargeand itwill then be possible tostar tth eve hicle onlywit hth eaid ofasecon dbatt ery
(s ta rting assis tance) . 35
8
Disp lay mes sage sand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Untilthen, alwaysselect parkposition 005Dmanually beforeyo uswit choffth eengine. #
Beforelea ving theve hicle, apply theelectr icpar king brak e.
Transm issionMalfunct ion *T
hetransmission ismalfunctionin g.The cause couldbeanove rheat edclutc hor bloc kedge ars. #
Letth etransmission cooldown. #
Ifth edispla ymessag est ill appear sfo llo wing are star t,con sult aqu alif ied spec ialistwo rkshop.
0080
Transmission OilOverhea-
ted Drive withCaution *T
hetransmission isove rheating. Whenthedispla ymessag eis activ e,star t-up and drivin gch aract eristic sma ybe
te mp orarily im pair ed. #
Drive at low engine speed. #
Avoid spor tydriving. #
Beforepulling away on uphill gradients, letth etra nsmiss ioncool down until thedispla ymessag edisappear s.
Parkin gLock Inoper ative
Apply Parkin gBrak e *
The transmiss ionismalfunct ioning.Theparkposition 005Dcann otbe select ed. #
Park theve hicle safely. #
Use theelectr icpar king brak eto secur eth eve hicle agains tro lling away.
Teaching inTransmission
Operate SelectorLever
Apply Brake forXXsRisk
of Vehicle RollingAway *T
hetransmission isbeing taught in.Ther eis arisk oftheve hicle rolling away. #
Dep ress and hold thebr ak epedal untilthete ac h-in proce sshas been completed.
The elect ric pa rking brak eis applied automat icallydur ing thete ac h-in proce ss. #
Swit chon theignition . #
Select parkposition 005D,transmiss ionposition 005Eorneutr al005C. Displa
ymessag esand warning/ indic ator lam ps 36
7

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Apply Parking BrakeRisk
of Rolling AwaySeeOpera-
tor's Manual *T
hetransmission positioncannotbe reliably identified. #
Use theelectr icpar king brak eto secur eth eve hicle agains tro lling away.
Teaching inTransmission
Complete *T
hetransmission's teac h-in proce ssiscom plete.All trans mis sionpos itions canbeselect edagain.
Tra nsmi ssion Malfunction
Servi ceRequire d *T
hetransmission ismalfunctionin g.
Consult aqu alif ied spec ialistwo rkshop. 368
Displa ymessag esand warning/ indic ator lam ps

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 (/page17 0).
If it is no tposs ibleto 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 (/page17 0).
or #
Release theelectr icpar king brak eaut omaticall y(/ page16 9).
If it is still no tpossible torelease theelectr icpar king brak e: #
Donotcon tinue driving. Consult aqu alif ied spec ialistwo rkshop. Displa
ymessag esand warning/ indic ator lam ps 369

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
* The yello w0024 indicator lam pis lit and there d0049 (USAonl y)or 0024 (Canada only)indicat orlam pis flashin g.
The electric par kingbr ak eis malf unctionin g.
The electric par kingbr ak ecoul dno tbe applied orreleased. #
Swit chtheignition offand switc hit bac kon.
To appl y: #
Release andthen apply theelectr icpar king brak emanuall y(/ page17 0).
To release: #
Appl yand then release theelectr icpar king brak emanuall y.
If th eelectr icpar king brak ecann otbe applied orthere d0049 (USAonl y)or 0024 (Canada only)indicat orlam p
con tinues toflash: #
Donotcon tinue drivin g.Con sult aqu alif ied spec ialistwo rkshop. #
Wher enecessar y,also secureth epar kedve hicle agains tro lling away.
* The yello w0024 indicator lam pis lit and there d0049 indicat orlam p(US Aonl y)or 0024 indicat orlam p(Can‐
ada only)flashes forapp roxima tely tenseco ndsafte rth eelectr icpar king brak ehas been applied orreleased. It
th en remains litor goes out.Theelectr icpar king brak eis malfu nctioning.
If th ech arge leve lis toolo w: #
Char gethe12 Vbatt ery. 37
0
Dis play messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
To appl y: #
switc hth eignition off.
The electr icpar king brak ewill beapplied automaticall y.
If th eelectr icpar king brak eis no tto be applied, e.g.atan aut omatic carwash orwhen theve hicle isbeing towe d,
lea vetheignition switchedon.This does notinclude having theve hicle towe dwit hth ere ar axle raised.
If th eelectr icpar king brak eis no tapplied automaticall y: #
Switc hth eignition offand switc hit bac kon. #
Release andthen apply theelectr icpar king brak emanuall y(/ page17 0).
If it is still no tpossible toappl 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.
To release: #
Ifth econ ditions forau tomatic release arefulf illed andtheelectr icpar king brak eis no tre leased automat ically,
re lease theelectr icpar king brak emanuall y(/ page17 0).
If it is still no tpossible torelease theelectr icpar king brak e: #
Donotcon tinue driving. Consult aqu alif ied spec ialistwo rkshop. Displa
ymessag esand warning/ indic ator lam ps 37
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
î Inoperat ive *T
heDownhill Speed Regulation ismalfunction ing. #
Consult aqu alif ied spec ialistwo rkshop.
î Not inCurr. Drive Prog. *T
heDownhill Speed Regulation isno tav ailable inthecur rentl ysel ect eddrive pr ogr am. #
Chang eth edr ive pr ogr am (/ page15 4).
î
Max. Speed 25mph *T
hemaximum speedof25 mph(4 0km/h) forth eDo wnhill Speed Regulation hasbeen exceeded. #
Drive mor eslo wly.
ç - -- mph *A
ctiveDis tan ceAssi stDIS TRONI Ccanno tbe acti vatedas notall activ ation condition sar efulf illed. #
Com plywithth eactiv ation conditions ofActiveDis tance AssistDIS TRONI C(/ page 187). Dis
play messa gesand warning/ indic ator lam ps 38
1