2020 MERCEDES-BENZ GLS Owners Manual

Occupant
safety Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0075 Re stra int system warning
lam p The
redre stra int system warning lam pis lit while theengine isrunning .
*Th ere stra int system ismalfunct ioning(/page36). &
WARNIN GRisk ofinju rydue tomalfu nctions inthere stra int system
If th ere stra int system ismalfunct ioning,restra int system com ponen tsma ybe trigg ered unint entionall yor ma y
no tdeplo yas intended during anacciden t.This mayaf fect theEmer gency Tensi oni ng Device sor airba gs, for
ex am ple. #
Have there stra int system checkedand repair edimmediat elyataqu alif ied spec ialistwo rkshop. #
Drive on car efully . #
Notethemessag eson themultifunc tiondispla y. #
Con sult aqu alif ied spec ialistwo rkshop immediat ely.
0076
Sea tbel twa rning lam p
fl ashes The
redseat beltwarning lam pflashes andanintermit tent wa rning tone sou nds.
*T he driver or front passeng erhas notfa stened their seat beltwhile theve hicle isin mo tion. #
Fasten your seat belt(/ page40 ).
*T her ear eobject son thefront passeng erseat. #
Remo vetheobjec tsfrom thefront passeng erseat. Displa
ymessag esand warning/ indic ator lam ps 623

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0076 Seat beltwarning lam p
light sup The
redseat beltwarning lam pwill light upforsix seconds oncetheengine hasstar ted.
In addition, awa rning tone maysou nd.
*T he seat beltwarning lam pre minds thedr iver and front passeng ertofasten their seat belts. #
Fasten your seat belt(/page40 ).
If yo uha ve placed objectson thefront passeng erseat, theseat beltwarning lam pma yre main lit. Ve
hicl e Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
Ù Wa rning lam pfo relectr ic
po we rst eer ing The
redelect ric po we rst eer ing warning lam pis lit while theengine isrunning .
*Th epo we r-assis tedsteer ing orthesteer ing itself ismalfunct ioning. &
WARNIN GRisk ofacci dent ifsteer ing capability isim pair ed
If th esteer ing does notfunc tion asintended, theve hicle's operating safetyis jeopar dized. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.Do
no tcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. #
Notethemessag eson themultifunc tiondispla y. 62
4
Displa ymessag esand warning/ indic ator lam ps

Engine
Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
ÿ Coolant warning lam p The
redcoolant warning lam pis lit while theengine isrunning .
*P oss ible cau ses:
R The temp eratur esensor ismalfunct ioning
R Coolant leve lto olow
R The airsuppl yto thera diat orisobs truct ed
R The radiat orfanis faulty
If th er eis an additional warning tone, thecoolant temp eratur ehas exceed edthemaximum permissible temp eratur e. &
WARNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld
co me intoco ntact withho tga ses orother escaping operating fluids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions andswitchof fth eengine. Donotcon tinue
dr iving under anycir cums tances. #
Notethemessag eson themultifunc tiondispla y.
If th ecoolant temp eratur edispla yis at thelowe rend ofthete mp eratur escale: Displa
ymessag esand warning/ indic ator lam ps 625

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Consult aqu alif ied spec ialistwo rkshop.
or #
Exit theve hicle andkeep asaf edis tance from itunti lth eengine hascooled down. #
Chec kth ecoolant leve l(/ page48 1). #
Mak esur eth at theair supply tothera diat orisno tim pair ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at the
cool anttemp eratur edispla yre mains belowthere dar ea.
00B9 En gine diagnosis warning
lam p The
yello wChec kEn gine warning lam pis lit while theengine isrunning .
*A malfunctio nha soccu rred intheengine, theex haus tsy stem orthefuel system.
The emission limitvalues maybe exceed edand theengine maybe inemer gency mod e.
In som est at es, legalrequ iremen tsstipulat eth at youmus timm ediat elyco nsult aqu alif ied spec ialistwo rkshop as
soon astheye llo wChec kEn gine warning lam plight sup. #
Have theve hicle checkedas soon aspossible ataqu alif ied spec ialistwo rkshop.
003D Electr icalmalfunction warn‐
ing lam p The
redelect rical mal functi onwarning lam pis lit.
*T her eis amalfunction intheelectr ics. #
Obser vethemessag eson themultifunc tiondispla y. 626
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
00B6 Fu elreser vewarning lam p The
yello wfuel reser vewarning lam plight sup while drivin g.
*Ther ehas been pressur eloss inthefuel system. Thefuel filler cap isno tclos edcor rectly orthefuel system isleak‐
ing. #
Close thefuel filler cap.
If th efuel filler cap hasalready been closedcor rectl y: #
Visit aqu alif ied spec ialistwo rkshop.
00B6 Fu elreser vewarning lam p The
yello wfuel reser vewarning lam pis lit while theengine isrunning .
*T he fuel supply hasdropped intoth ere ser verang e. #
Refuel . Displ
aymessa gesand warning/ indic ator lam ps 62
7

Br
ak es Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0049 Re dindicat orlam p,elect ric
par kingbr ak eapplied (USA
onl y)
0024 Re dindicat orlam p,elect ric
par kingbr ak eapplied (Can‐
ada only)
0024 Ye llo welect ric pa rking
br ak eindic ator lam pis mal‐
func tioning The
redelect ric pa rking brak eindic ator lam pflashes orislit.The yello windic ator lam pis also litifth eelectr icpar king
br ak emalfunct ions.
* #
Obser vethemessag eson themultifunc tiondispla y. 628
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0027 Br ak ewa rning lam p(US A)
004D Brak eswarning lam p(Can‐
ada) The
redbr ak esy stem warning lam pis lit while theengine isrunning .
*P oss ible cau ses:
R The brak efo rc eboos tingismalfunct ioningandthebr aking charact eristic sma ybe affect ed.
R The reisinsuf ficie ntbrak efluid inthebr ak efluid reser voir. &
WARNIN GRisk ofacci dent andinjuryifbr ak efo rc eboos tingismalfunct ioning
If br ak efo rc eboos tingismalfunct ioning,increased brak epedal forc ema ybe neces saryfo rbr aking. Thebraking
ch aract eristic sma ybe impair ed.The brakin gdis tance canincrease ineme rgency braki ng situa tions. #
Stop inasaf elocation immediat ely.Do notcont inue driving. #
Consult aqu alif ied spec ialistwo rkshop. &
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
no tcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. #
Donotadd brak efluid. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions.Do notcontinu edr ivi ng und eranycir cum‐
st anc es. Dis
playmes sagesand warning/ indic ator lam ps 629

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Notethemessag eson themultifunc tiondispla y. #
Con sult aqu alif ied spec ialistwo rkshop. Dr
iving systems Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
L Wa rning lam pfo rdis tance
wa rning func tion The
reddis tan cewarning lam plight sup while theve hicle isin mo tion.
*T he distance totheve hicle infront istoosmall forth espeed selected.
If th er eis an additional warning tone, youar eappr oachingan obs tacle attoohigh aspeed. #
Beprepar edtobrak eimmediat ely. #
Incr ease thedis tance.
Fu nctio nof ActiveBr ak eAssi st(/ pag e225).
ä Suspens ionwarning lam p The
yello wAIRMA TIC/E -ACTIV EBO DY CONTR OLwarning lam pis lit.
*A malfu nction hasoccur redwit hAIRMA TIC/E-ACTIV EBO DY CONTR OL. #
Notethemessag eson themultifunc tiondispla y. 630
Displa ymessag esand warning/ indic ator lam ps