2020 MERCEDES-BENZ GLA check engine

If
it is necessary tomodify components ofthe
restraint systemtoaccommodate aperson
with disabilities, contact anauthori zed
Mercedes-Benz Centerfordetail s.USA only:
for further information contactourCustomer
Assistance Centerat1-800 FOR-MERCEDES
(1‑800‑367‑6372).
Mercedes-Benz recommendsthatyouonly use
driving aidswhich havebeen appro vedspecifi-
cally foryou rvehicle byMercedes-Benz. Restraint
systemwarning lamp
The functions ofthe restraint systemare
checked aftertheignition isswitched onand
at regul arintervals whilethe engine isrunning.
Therefore, malfunctions canbedetected in
good time.
The 0075 restraint systemwarning lampon
the instrument clusterlightsupwhen theigni-
tion isswitched on.Itgoes outnolater thana
few seconds afterthevehicle isstarted. The
restraint systemisopera tional.
A malfu nction hasoccurred ifthe 0075
restraint systemwarning lamp:
R does notlight upafter theignition is
switched on
R does notgoout after afew seconds withthe
engine running
R lights upaga inwhil ethe engine isrunning G
WARNING
If the restraint systemismalfu nctioning,
restraint systemcomponents maybetrig-
gered unintentionally ormay notbetrig-
gered asintended inthe event ofan acci-
dent. Thismay affect theEmergency Ten-
sioning Devices orair bags, forexample .
There isarisk ofinjury.
Have therestraint systemchecked and
repai redimmedi atelyataqua lifiedspecia list
workshop. PASSE
NGERAIRBAG indic atorlamp PASSENGER
AIRBAG ONindicator lamp0043
and PASSENGER AIRBAG OFFindicator
lamp 0044are part ofthe Occupant Classifica -
tion System (OCS).
The indicator lampsdispl aythe status ofthe
front-passenger frontairbag:
R PASSENGER AIRBAG ONlightsup for
60 seconds, subsequently bothindicator
lamp sare off(PASSENGER AIRBAG ONand
OFF): thefront-passenger frontairbag is
abl eto depl oyinthe event ofan accident.
R PASSENGER AIRBAG OFFlightsup: the
front passe ngerfront airbag isdeactiva ted.
It wil lthen notbedepl oyed inthe event of
an accident.
If the PASSENGER AIRBAG ONindicator lamp
is off, only thePASSENGER AIRBAG OFFindi-
cator lampshows thestatus ofthe front-
passe ngerfront airbag. ThePASSENGER AIR
BAG OFFindicator lampmaybelitcontinu-
ousl yor be off.
Depending onthe person inthe front-
passe ngerseat, thefront-passenger frontair
bag must either bedeactiva tedorenabl ed;
see thefollow ingpoints. Youmust make sure
of this both before andduringajourney.
R Children inachil drestraint system:
whether thefront-passenger frontairbag is
enabl edordeactiva teddepends onthe
installe dchild restraint system,andtheage
and size ofthe child. Therefore, besure to
observe thenotes onthe "Occupa ntCla ssifi-
cation System (OCS)"(Ypage 47)and on
"Ch ildre nin the vehicle "(Y page 53).
There youwillalso findinstructions onrear-
ward andforward -facingchildrestraint sys-
tems onthe front-passenger seat.
R All other persons: dependingon the classi -
fication ofthe person inthe front-passenger 40
Occ
upant safetySafety

cle
.The engineoutpu tis also mod ified tokeep
the vehi cleonthe desiredcou rse within physi-
cal limits. ESP®
ass ists thedriver whe npu lling
aw ay on wetor slippe ryroa ds. ESP ®
can also
stab ilize the vehi cleduring braking.
ETS/ 4ETS (Electro nicTractio nSys tem) i
Obs
erve the"Important safety notes" sec-
tion (Ypage 60).
ETS tracti oncontrol ispa rtof ESP ®
.On vehi -
cle swi th 4MATIC ,4ETS ispa rtof ESP ®
.
Tra ction control brakes thedrive whe elsindi -
vid ually if they spin.Thi sena bles youto pull
aw ay and acce lerate onslippe rysurface s,for
exa mpl eif the roadsu rface isslippe ryon one
sid e.In addition, more drive torqu eis transf er-
red tothe whe elor whe elswi th tracti on.
Tra ction control remainsacti ve,evenif yo u
dea ctiva teESP ®
.
Off-ro ad4ETS (Electro nicTractio nSys -
tem) A
4ETS system specificallysu ited tooff-ro ad
terra inisacti vate dau toma tically once theoff-
roa dpro gramisacti vate d(Y page 170 ).
Impo rtant safetynotes i
Obs
erve the"Important safety notes" sec-
tion (Ypage 60). G
WARNI
NG
If ESP ®
is mal functi oning,ESP ®
is una ble to
stab ilize the vehi cle.Addi tiona lly, furth er
dri ving safety systems aredeactiva ted.This
incre asesthe riskof skid ding and anacci -
dent.
Drive oncare fully.Have ESP®
checke dat a
qu alifi ed spe cialist wo rksho p.
Vehi cles without 4MATIC:whe ntowi ngyour
vehi clewith the front axlerai sed ,it is imp or-
tant thatyouobs erve thenotes onESP ®
(Y page 300 ).
If the 00BB ESP®
OFF warning lamp lights up
continu ously ,ESP ®
is dea ctiva ted.
If the 00E5 ESP®
wa rning lamp and the00BB
wa rning lamp are lit continu ously ,ESP ®
is not
ava ilab ledu eto amal functi on. Obs
erve theinforma tion onwarning lamps
(Y page 236) anddispl aymess ages whi ch
may besho wninthe instru ment cluster
(Y page 205).
Only usewhe elswi th the recom mendedtire
size s.Only thenwillESP ®
functi onpro perly.
Charac teristicsof ESP® Gen
eral informatio n
If the 00E5 ESP®
wa rning lamp goesou t
bef ore beginning thejour ney,ESP ®
is au to-
mati callyacti ve.
If ESP ®
interv enes,the 00E5 ESP®
wa rning
la mp flashe sin the instru ment cluster.
If ESP ®
interv enes:
X Do not deactiva teESP ®
und erany circu m-
stance s.
X Only depress theacce lerato rped alas far as
neces sarywhe npu lling away.
X Ada ptyour driving styleto suitthe prevailing
roa dand weathe rcondi tions.
EC Ostart/s topfunc tion
The ECO start/stop functionswi tches the
engi neoff automa tically whe nthe vehi cle
stop smovi ng.The enginestar tsautoma tically
whe nthe driver wants topullaw ay again.
ESP ®
rema insinits pre viouslysel ected status.
Exa mple :if ESP ®
wa sdea ctiva tedbefore the
engi newasswi tched off,ESP ®
rema insdea cti-
vate dwhe nthe engi neisswi tched onagain.
De acti vatin g/acti vatin gES P®
(e xc ept
Merc edes‑AMG vehicle s) Impo
rtant safetynotes
i Obs
erve the"Important safety notes" sec-
tion (Ypage 60).
You canselect betw eenthefollow ing state sof
ESP ®
:
R ESP ®
is acti vate d.
R ESP ®
is dea ctiva ted. G
WARNI
NG
If yo udea ctiva teESP ®
,ESP ®
no long ersta-
bi lizes thevehi cle.The reisan incre asedris k
of skid ding and anacci dent. 64
Dri
vin gsafe tysys temsSafe ty

swerving.
Trailerswithahigh centerofgrav-
ity can tipover before ESP®
can detect this.
There isarisk ofan accident.
Always adaptyour driving styletothe pre-
vailing roadandweather conditions.
If your vehicle withtrailer (vehicle/trailer com-
bination) beginstolurch, youcan only stabilize
the vehicle/trailer combinationbydepressing
the brake firmly.
ESP ®
trailer stabilization isactive above
speeds ofabout 65km/h.
ESP ®
trailer stabilization doesnotwork if
ESP ®
is deactivated ordisabl edbecause ofa
malfunction. EBD
(electronic brakeforcedistribu-
tion)
General informat ion EBD
monitors andcont rolsthebrake pressure
on the rear wheels toimprove drivingstability
while braking.
Importa ntsafety notes i
Observe
the"Important safetynotes" sec-
tion (Ypage 60). G
WARNING
If EBD ismalfunctioning, therear wheels can
lock, e.g.under fullbraking. Thisincreases
the risk ofskidding andanaccident.
You should therefore adaptyour driving
style tothe different handling characteris-
tics. Have thebrake system checked ata
qual ified speciali stworkshop.
Please observe theinformation onwarning
and indicator lamps(Ypage 234)
(Y page 234)aswell ason displa ymessages
(Y page 207). ADA
PTIVE BRAKE
ADA PTIVE BRAKE enhances brakingsafetyand
offers increased brakingcomfort.In addition
to the braking function, ADAPTIVE BRAKE also has
theHOLD function (Ypage 165)andhill
start assist (Ypage 128). STEER
CONTROL
General informat ion STEE
RCONTROL helpsyoubytransmitt inga
noticeable steeringforcetothe steering wheel
in the direction requiredforvehicle stabiliza-
tion.
This steering assistance isprovided inparticu-
lar if:
R both right wheels orboth leftwheels areon
a wet orslippery roadsurface whenyou
brake
R the vehicle beginstoskid
Importa ntsafety notes i
Observe
the"Important safetynotes" sec-
tion (Ypage 60).
No steering assistance isprovided fromSTEER
CONTROL, if:
R ESP ®
is malfunctioning
R the steering ismalfunctioning
If ESP ®
is malfunctioning, youwillbeassisted
further bythe electrical powersteering. Protection
againsttheft Immobilizer
The immobili zerprevents yourvehicle from
being started without thecorrect SmartKey.
X To activate withtheSmar tKey: remove
the SmartKey fromtheignition lock.
X To
activate withKEYLESS-GO start-func-
tion orKEY LESS-GO: switchtheignition off
and open thedriver's door.
X To deactivate: switchonthe ignition.
When leaving thevehicle, alwaystake the
SmartKey withyouand lock thevehicle. Any-
one canstart theengine ifavalid SmartKey
has been leftinside thevehicle.
i The
immobili zerisalwa ysdeactivated
when youstart theengine.
In the event thattheengine cannot bestar-
ted (yet thevehicle's batteryischarged), Protection
againsttheft
67Safety Z

Problem
Possible
causes/co nsequences and0050 0050
Solutions You
cannolonger lock
or unlock thevehicle
using KEYLE SS-GO. The
SmartK eybattery isdischarged ornearly discharged.
X Check theSmartK eybattery (Ypage 72)and replace itifneces-
sary (Ypage 72).
If this does notwork:
X Unlock (Ypage 76)orlock (Ypage 77)thevehicle usingthe
mechanical key. There
isinterf erence fromapowerful sourceofradio waves.
X Unlock (Ypage 76)orlock (Ypage 77)thevehicle usingthe
mechanical key. KEYLE
SS-GO ismalfunctionin g.
X Lock/ unlock thevehicle usingtheremote controlfunct ionofthe
SmartK ey.
X Have thevehicle andSmartK eycheck edataqual ified specialist
workshop.
If the vehicle canalso notbelocked/unlock edusing theremote
cont rolfunct ion:
X Unlock (Ypage 76)orlock (Ypage 77)thevehicle usingthe
mechanical key.
X Have thevehicle andSmartK eycheck edataqual ified specialist
workshop. The
engine cannot be
started usingtheSmart-
Key. The
on-board voltageistoo low
X Switch offnon- essential consumers, e.g.seat heating orinterior
lighting, andtrytostart theengine again.
If this does notwork:
X Check thestarter battery andcharge itifnecessary
(Y page 295).
or
X Jump-start thevehicle (Ypage 296).
or
X Consult aquali fiedspecialist workshop. The
engine cannot be
started usingtheStart /
Stop button. TheSmart-
Key isin the vehicle. The
vehicle islocked.
X Unlock thevehicle andtrytostart thevehicle again. The
SmartK eybattery isdischarged ornearly discharged.
X Check theSmartK eybattery (Ypage 72)and replace itifneces-
sary (Ypage 72).
If this does notwork:
X Start yourvehicle withtheSmartK eyinthe ignition lock. There
isinterf erence fromapowerful sourceofradio waves.
X Start yourvehicle withtheSmartK eyinthe ignition lock. 74
Smar
tKeyOpening andclosing

X
Turn themechanic alkey count er-clockwise
as far asitwill gotoposition 0047.
The door isunlocked.
X Turn themechanic alkey back andremove
it.
X Insert mechanic alkey into theSmart Key
(Y page 72). Locking
thevehicle (mechanical key)
If the vehicle cannolonger belocked withthe
Smart KeyorKEYLE SS-GO, usethemechanic al
key.
X Open thedriver's door.
X Close thefront -passenger door,therear
doors andthetailgate.
X Press thelockin gbutton onthe driver’s door
(Y page 75).
X Check whether thelockin gknobs onthe
front -passenger doorandtherear doors are
still visible. Pressdownthelockin gknobs by
hand, ifnecessary.
X Close thedriver's door.
X Take themechanic alkey outofthe Smart -
Key (Ypage 71).
X Insert themechanic alkey into thelock of
the driver's doorasfar asitwill go. X
Turn themechanic alkey clock wiseasfar as
it will gotoposition 0047.
X Turn themechanic alkey back andremove
it.
X Make surethatthedoors andthetailgate
are locked.
X Insert mechanic alkey into theSmart Key
(Y page 72).
i If
you lock thevehicle asdescribed above,
the fuel filler flapisnot locked. Theanti-
theft alarm system isnot armed. Cargo
compar tment Import
antsafety notes G
WARNIN
G
Parts ofthe body could become trapped
during automatic closingofthe tailgate.
Moreover, people,e.g.children, maybe
standin gin the closing areaormay enter the
closing areaduring theclosing process.
There isarisk ofinjury.
Make surethatnobody isin the vicinit yof
the closing areaduring theclosing process.
Use oneofthe following optionstostop the
closing process:
R press the0054 button onthe Smart Key.
R pull orpress theremote operating switch
on the driver's door.
R press theclose button orSTOP button on
the tailgate.
R pull thehandle onthe tailgate. G
DANGER
Combustion enginesemitpoisonous
exhaust gasessuchascarbon monoxide.
Exh aust gases canenter thevehicle interior
if the tailgate isopen while theengine is
runnin g,especially ifthe vehicle isin
motion .There isarisk ofpoisoning.
Always switchoffthe engine beforeopening
the tailgate. Neverdrivewiththetailgate
open. Cargo
compar tment
77Opening andclosing Z

There
isarisk offire and anaccident .
Release theparking brakefullybefore driv-
ing off.
! Do
not warm upthe engine whilestation -
ary. Pullaway immediately. Avoidhigh
engine speeds andfullthrot tleuntil the
engine hasreached itsoperating tempera-
ture.
In vehicles withautomatic transmission,
engage positions Pand Ronly when the
vehicle isstation ary.
Where possible, avoidspinnin gthe drive
wheels whenpulling awayonslippery roads.
You could otherwise damagethedrive train.
! Mercedes-AMG
vehicles:avoidfull-load
operation andengine speeds greater than
5000 rpmwhen theengine iscold. This
helps toprotec tthe engine andavoids
uncomf ortable driving. Key
positions
Smar tKey 005A
Toremove theSmart Key
(shift thetrans mission toposition 005D)
0047 Power supply forsome consumer s,such
as the windshield wipers
0048 Ignit ion(power supplyforallconsumer s)
and drive position
0049 Tostart theengine
i The
Smart Keycanbeturned inthe ignition
lock even ifit is not thecorrec tSmart Key
for the vehicle. Theignition isnot switched
on. The engine cannotbe start ed. Star
t/Stop button General
notes
Vehicles withKEYLE SS-GO are equipped with
Smart Keysfeaturing theintegr atedKEYLE SS-
GO funct ionand adetachable Start/Stopbut-
ton .
A check whichperiodically establishesaradio
conn ection between thevehicle andthe
Smart Keydetermin eswhether avalid Smart -
Key isin the vehicle. Thisoccurs, forexample,
when startingthe engine.
When youinsert theStart /Stopbutton into
the ignition lock,thesystem needsapprox-
imately twoseconds recognitiontime. Youcan
then usetheStart /Stopbutton .
Pressing theStart /Stopbutton several times
in succession correspondstothe different
Smart Keypositions inthe ignition lock.Thisis
only thecase ifyou arenot depressing the
brake pedal.
If you depress thebrake pedalandpress the
Start /Stopbutton ,the engine startsimmedi-
ately.
To start thevehicle without actively usingthe
Smart Key:
R the Start /Stopbutton mustbeinsert edin
the ignition lock
R the Smart Keymust beinthe vehicle
R the vehicle mustnotbelocked withthe
Smart KeyorKEYLE SS-GO (Ypage 70)
Do not keep theKEYLE SS-GO key:
R with electron icdevices, e.g.amobile phone
or another SmartKey.
R with metallic objects,e.g. coins ormetal
foil.
R inside metallic objects,e.g. ametal case.
This canaffect thefunct ionality ofKEYLE SS-
GO.
If you lock thevehicle withtheSmart Key
remote controlorwith KEYLE SS-GO, after a
short time:
R you willnotbeable toswitch onthe ignition
with theStart /Stopbutton .
R you willnolonger beable tostart theengine
with theStart /Stopbutton untilthevehicle
is unlocked again.
If you lock thevehicle centrally using thebut-
ton onthe front door(Ypage 75),youcan
cont inue tostart theengine withtheStart /
Stop button . Driving
125Drivingandparking Z

Inhaling
theseexhaustgases ishazardo usto
heal thand canresul tin poiso ning. There isa
risk offatal injury. Therefore, neverleavethe
engine running anenclosed spacewithou t
adeq uate ventilation. G
WARNING
Flamma blemateria lsintroduced through
environmental influenceorby animal scan
ignite ifin contact withtheexhau stsystem
or parts ofthe engine thatheat up.There is
a risk offire.
Carry outregul archecks tomake surethat
there arenoflamma bleforeign materia lsin
the engine compartment orinthe exhau st
system.
Gene ralnotes The
engine runsatahigher speedduringthe
cold start procedu reso that thecataly ticcon-
verter canreach operatingtemperature more
qui ckly. Thesound ofthe engine maychange
duri ngthis time.
Automatic transmission X
Shift thetransmission topositio n005D
(Y page 134).
The transmission positionindicator onthe
multifu nctiondisplayshows 005D
(Y page 134).
i You
canstart theengine intransmission
positio ns005D and 005C.
Start ingprocedure withtheSmart Key To
start theengine usingtheSmartKey instead
of the Start/St opbutton, pullthe Start/St op
button outofthe ignition lock.
X Turn theSmartKey topositio n0049 inthe igni-
tion lock (Ypage 125)andrelea seitas
soon asthe engine isrunning.
Start ingprocedure withtheStart /
Stop button The
Start/St opbutton canbeused tostart the
vehicle manuallywithou tinserting theSmart-
Key into theignition lock.TheStart/St opbut- ton
must beinserted inthe ignition lockand
the SmartKey mustbeinthe vehicle .This
mode forstarting theengine operatesinde-
pendently ofthe ECO start/stop automatic
engine startfunction.
You canstart theengine ifavali dSmartKey is
in the vehicle .Switch offthe engine and
alw ays take theSmartKey withyouwhen leav-
ing the vehicle ,even ifyou only leaveitfor a
short time.Payattention tothe important
safety notes.
X Depress thebrake pedaland keep it
depres sed.
X Press theStart/St opbutton once
(Y page 125).
The engine starts.
Start ingprocedure viasmart phone Observe
theimportant safetynotesonstarting
the engine (Ypage 126).
You canalso start yourengine viayou rsmart-
phone fromoutsid ethe vehicle .In this case,
the previou slyselected climatecontrolsetting
is activated. Inthis way youcan cool orheat
the interior ofthe vehicle beforestarting the
journey.
Only start theengine viayou rsmartphone ifit
is safe tostart andruntheengine whereyour
vehicle isparked.
Observe thelega lstipul ations inthe area
where yourvehicle isparked. Enginestartvia
smartphone maybelimi ted tocertain coun-
tries orregions.
You canexecute amaximum oftwo consecu-
tive starting attempts viayou rsmartphone. If
you insert theSmartKey intotheignition lock,
you can carry outtwo more starting attempts.
Once youhave started theengine, youcan
switch theengine offvia you rsmartphone at
any time.
You canonly start theengine viayou rsmart-
phone if:
R the SmartKey isin the ignition lock
R park positio n005D isselected
R the accelera torpeda lis not depres sed
R the alarm for the anti-theft alarm system is
not set
R the panic alarm isnot activated
R the hazard warning lampsare switched off
R the hood isclosed Drivi
ng
127Drivi ngand parking Z

Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine isnot run-
ning smoothly andis
misfiring. There
isamalfunction inthe engine electron icsorinamechanical
componen tof the engine management system.
X Only depress theaccelerator pedalslightly.
Otherwise, non-combusted fuelmay getinto thecatalytic con-
verter anddamage it.
X Have thecause rectified immediately ataqual ified specialist
workshop. The
coolant tempera-
ture gauge shows a
value above 248‡
(120 †).The warning
lamp mayalsobeon
and awarning tonemay
sound. The
coolant levelistoo low. Thecoolant istoo hotand theengine is
no longer beingcooled sufficiently.
X Stop assoon aspossible andallow theengine andthecoolant to
cool down.
X Check thecoolant level(Ypage 277). Observe thewarning notes
as you dosoand add coolant ifnecessary. Notes
ontowing vehicles
The vehicle isnot suitable forattaching tow
bar systems, suchasthose usedforflat tow-
ing ordinghy towing.
Att aching orusing towbarsystems mayresult
in damage tothe vehicle.
When towing avehicle withtowbarsystems,
safe driving characterist icscannot beguaran-
teed forthe towing vehicle orthe towed vehi-
cle.
The vehicle/trailer combinationmayswerve.
Observe thepermissible towingmethods
(Y page 301)andthenotes ontowing with
both axles onthe ground (Ypage 301). DYNAMIC
SELECTbutt on(all vehi-
cles except Mercedes-AMG vehicles)
Use theDYNAMIC SELECTbutton tochange
the drive program. Depending onthe drive pro-
gram selected thefollowing vehiclecharacter-
istics willchange:
R the drive (engine andtransmission manage-
ment)
R the sound ofthe exhaust system(vehicles
with sports exhaust system)
R the steering
R the availa bilityofthe ECO start/ stopfunc-
tion
R the climate control Each
timeyoustart theengine withtheSmart-
Key orthe Start /Stopbutton, driveprogram C
is activated. Forfurther information about
startin gthe engine, see(Ypage 126). X
Press DYNAMIC SELECTbutton 0043asmany
times asnecessary untilthedesired drive
program isselected.
The selected driveprogram appearsinthe
multifunct iondisplay .Aft erfive seconds, the
display goesoutand thestatus symbol of
the selected driveprogram appears.
In addition, thecurrent driveprogram set-
tings aredisplay edbriefly inthe multimedia
system display.
i In
afew countr ies,theECO start/ stop
funct ionisdeactivated atthe factory dueto
the availa blefuel grade. Inthis case, the
ECO start/ stopfunct ionisnot availa blein
any drive program, regardless ofthe display
in the multimedia systemdisplay. 132
DY
NAMIC SELECTbutt on(all vehicl esexce ptMercedes-AMG vehicles)Driving andparking