check engine light MERCEDES-BENZ GLA SUV 2020 Owners Manual

R
Frequent operation in mountainous terrain or
on poor road sur faces
R When the engine is oTen leT idling for long
periods
R Operation in particular lydusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air /lter, air /lter, engine oil and oil /lter,
fo rex ample, changed more frequentl y.The tyres
must be checked more frequently if theve hicle is
operated under increased loads. Further informa-
tion can be obtained at a quali/ed specialist work-
shop. Batt Batt
er
ery disconnection per
y disconnection per iods
iodsThe AS
SYST PLUS service inter val display can cal-
culate the service due date only when the battery
is connected. #
Display and no tedown the service due date
on the inst rument display before disconnect-
ing the battery (/ page 341). Engine com
Engine com
par
partment
tment A
A
ctiv
ctiv e bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otection)
ection) Oper
Oper
ation of t
ation of t he activ
he active bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otec-
ec-
tion)
tion)
In cer tain accident situations, the actuation of the
active bonnet reduces therisk of injury topedes-
trians. The rear area of the bonnet is raised by
appr oximately 70 mm.
Fo rth e drive tothewo rkshop, reset the actuated
active bonnet yourself (/ page 342).
ATer the active bonnet has been actuated, pedes-
trian pr otection may be limited.
Ha ve the full functionality of the active bonnet
re stored in a quali/ed specialist workshop.
R
R ese ese tting t
tting t he activ
he activ e bonnet
e bonnet &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. #
With your hand 0at, push down active bonnet
1 inthe area around the hinges on bo th
sides (ar rows ).
In doing so, the actuator is depressurised and
yo u may hear a hissing sound.
The engine bonnet must engage in position. #
Ifth e active bonnet can be raised slightly at
th ere ar in the area of the hinges, repeat the
step until it engages co rrectl y. 342
342
Maintenance and care

#
Ifth e bonnet can still be liTed slightl y,open
th e bonnet again and close it with a little force
until it engages cor rectl y. Engine oil
Engine oil
Chec
Chec
king t
king t he engine oil lev
he engine oil lev el using t
el using the on-board
he on-board
com
com put
puter
er
R
R eq
eq uir
uir ements:
ements:
R The engine has been warmed up.
R The vehicle is par ked on a le vel sur face.
R The engine is running at idle speed.
R The bonnet is closed.
The engine oil le vel is de term ined during driving.
De term ining the engine oil le vel can take up to
30 minutes with a normal driving style and even
longer with an active driving style. On-board computer:
4 Service 5
Engine oil level
One of thefo llowing message s will appear onthe
inst rument displa y:
R Engine oil level Measuring now: measu rement
of the oil le vel is not yet possible. #
Repeat there qu est aTer a maximum of
30 minutes' driving.
R Engine oil level OK andthe bar display for
indicating the oil le vel on the inst rument dis-
play is green and is between "min" and "max":
th e oil le vel is cor rect.
R Engine oil level Add 1,0 l andthe bar display
fo r indicating the oil le vel on the inst rument
display is orange and is below "min": #
Add 1 l of engine oil.
R Reduce engine oil level andthe bar display for
indicating the oil le vel on the inst rument dis-
play is orange and is abo ve"max": #
Drain o. any excess engine oil that has been
added. Todo so, consult a quali/ed specialist
wo rkshop.
R For engine oil level turn on ignition #
Switch on theve hicle tocheck the engine oil
le ve l.
R Engine oil level System inoperative: The oil
leve l sensor is defective or not connected. #
Consult a quali/ed specialist workshop.
R Engine oil level System currently unavail. #
Close the bonnet.
T T opping up engine oil
opping up engine oil &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. Maintenance and care
345
345

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot for starting the engine with theke y (/ page 171). Lights Lights
Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
:
Left dipped beam (examp le) *T
he cor responding light source is defecti ve. #
Drive on carefull y. #
Consult a quali/ed specialist workshop immediatel y.
or #
Check whe ther you are permitted toreplace the light source yourself (/ page 149).
% LED light sources: the display message forth e cor responding light appears only when all the light-emitting diodes
in the light are faulty. Display message
s andwarning/indicator lamps
425
425

_
2nd seat row, right Not loc ked...... 443
# 12 V battery See Owner's Man-
ual......................................................... 473
ò Acoustic presence indicator
inoperative............................................ .432
: Active Light System inoperative..... 426
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 482
¯ AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 481
¯ AdBlue system fault Engine
start not possible................................... 482
¯ AdBlue system fault See Own-
er's Manual............................................ 481
5 Add 1 litre engine oil when next
re fuelling ............................................... 483
é ATTENTION ASSIST inoperati ve..... 456
é ATTENTION ASSIS T:Take a
break!.................................................... 456 :
Automatic driving lights inoper-
ative...................................................... 426
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 434
û Before starting the engine, turn
th e steering wheel.................................. 441
Á Change key batteries .................... 423
è Charger cable connected .............. 432
J Check brake 0uid le vel.................. 455
ï Check trailer hitch lock (white
display message) .................................... 438
h Check tyre(s) ................................ 476
! Clean the fuel /lter....................... 446
ÿ Coolant Stop vehicle Switch
engine o............................................... 445
! currently una vailable See Own-
er's Manual............................................4 68
÷ currently una vailable See Own-
er's Manual............................................4 695
Engine oil le vel cannot be meas-
ured....................................................... 484
5 Engine oil le velRe duce oil le vel..... 483
5 Engine oil le velSt op vehicle
Switch engine o.................................... 483
5 Engine oil pressure Stop Switch
o. engine.............................................. 484
ä Fault Drive at max. 80 km/h ......... 467
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 20
& inoperative Battery low................. 429
& inoperative Char geHV battery...... 430
& inoperati veHigh-voltage battery
ch arging inco mplete ............................... 430
& inoperative Refuel vehicle............. .430
& inoperative See Owner's Man........ 429
! inoperative See Owner's Manual.. .469
÷ inoperative See Owner's Manual.. .470
T inoperative See Owner's Manual.. .471
G Inoperative................................... 472 Index
509 509

Engine oil
Engine oil
Additives................................................ 408
Capacity................................................ 409
Checking the oil le vel using the on-
board computer.....................................3 45
MB-F reigabe or MB-Appr oval................. .409
Quality................................................... 409
To pping up............................................ .345
ERA
ERA -GL -GLON
ONASS tASS t es
est modet mode
St arting/ending.................................... .333
Err
Err or message
or message
see Display message
ESC (Electr
ESC (Electr onicSt
onic Stability Contr
ability Contr ol)
ol)
see ESP ®
(Elect ronic Stability Prog ram)
ESP
ESP ®
®
Crosswind Assis t.................................... 229
Tr ailer stabilisatio n................................. 230
ESP
ESP ®
®
(Electr
(Electronic St
onic Stability Pr
ability Pr ogr
ogram)
am)
Ac tivating/deactivating.......................... 230
Fu nction/no tes...................................... 228
EU type approv
EU type appr oval number
al number ............................. 401
Ext
Ext er
erior lighting
ior lighting
Car e...................................................... 353 Ext
Ext
er
erior lighting
ior lighting
see Lights F
F
F
F atigue det
atigue det ection
ection
see ATTENTION ASSIST
F
F ir
ir e e
e e xtinguisher
xtinguisher.......................................... 358
F
F irs
irst-aid kit t-aid kit (soT
(soTsided)
sided)................................. 358
Flat to
Flat towing
wing
see Tow- bar system
Flat tyre
Flat tyre MOExtended tyres................................. 359
No tes..................................................... 359
TIREFIT kit.............................................. 361
Wheel chang e........................................ 389
Floor mats
Floor mats................................................... 137
F F oil cov
oil cov er
ering
ing
Ra dar and ultrasonic sensor s................. 226
Fr
Fr ee
ee soTw
soTw are
are................................................. 45
Fr
Fr eq
eq uencies
uencies
Mobile phone......................................... 399
Tw o-w ayradio........................................ 399
Fr
Fr ont airbag (dr
ont airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er).............. 52 F
F
r
ront passeng
ont passeng er seat
er seat
see Load compartment
see Seat
Fr Fr ont wheel ar ch
ont wheel ar ch
Fi tting/removing the co ver..................... 149
Fr
Fr ont wheel arc
ont wheel arc h cov
h cover
er
Fi tting/removing.................................... 149
F
F uel
uel
Additives................................................ 405
Diesel.................................................... 405
E10........................................................ 404
Fu elreser ve........................................... 406
Low outside temp eratures...................... 405
Pe trol..................................................... 404
Quality (diesel )....................................... 405
Quality (petrol)....................................... 404
Re fuellin g.............................................. .194
Sulphur content..................................... 404
Ta nk content.......................................... 406
F F uel consump
uel consump tion indicat
tion indicator
or
Calling up.............................................. 189
F
F unction seat
unction seat
see Door cont rol panel 516
516
Index

Ó
Active Brake Assist warning lam p..4 96
J Brake system warning lamp (red)... 495
J Brake system warning lamp (yel-
low)....................................................... 494
ÿ Coolant warning lamp (red)........... 490
ÿ Coolant warning lamp (yellow).......4 92
! Electric parking brake indicator
lamp (red).............................................. 494
# Electrical fault warning lamp
...................................................... 489, 493
; Engine diagnosis warning lamp...... 492
å ESP®
OFF warning lam p................ 498
÷ ESP®
wa rning lamp 0ashes........... 497
÷ ESP®
wa rning lamp lights up......... 498
æ Fuelreser vewarning lamp lights
up.......................................................... 493
Ù Powe r steering warning lamp
(red)...................................................... 489
_ Reduced warning lamp po wer....... 488
6 Restraint system warning lam p...... 486 ü
Seat belt warning lamp 0ashes...... 487
ü Seat belt warning lamp lights up.... 488
Ú System er rorwa rning lam p........... 488
! The electric parking brake (yel-
low) indica tor lam p................................. 494
ï Trailer tow hitch warning lam p....... 490
h Tyre pressure monitoring sys-
te m wa rning lamp 0ashes....................... 499
h Tyre pressure monitoring sys-
te m wa rning lamp lights up.................... 500
L Warning lamp for distance
wa rning function.................................... 496
Overview................................................ 485
PA SSENGER AIR BA G............................... 57
W
W arr arr anty
anty........................................................ 41
W
W ashing b
ashing b y hand (car
y hand (car e)
e)................................ 351
W
W at
at er t
er t ank
ank
see Air-water duct
W
W eat
eat her inf
her inf or
ormation
mation..................................... 313 W
W
eb br ow
eb br owsers
sers
Overview................................................ 326
Wheel c
Wheel c hange
hange
Fi tting a new wheel................................ 392
Lo we ring theve hicle.............................. 393
Preparation............................................ 389
Ra ising theve hicle................................. 390
Re moving a wheel................................. .392
Re moving//tting hub caps..................... 389
Wheel c
Wheel c hange
hange
see Emer gency spa rewheel
Wheel rot
Wheel rotation
ation ............................................. 387
Wheels
Wheels Care...................................................... 353
Chec king............................................... 379
Checking the tyre pressure (tyre pres-
sure monitoring system)......................... 382
Fi tting.................................................... 392
Flat tyre................................................. 359
Inter changing......................................... 387
MOExtended tyres................................. 359
Noise..................................................... 379
No tes on /tting...................................... 384
Re moving............................................... 392 Index
535 535