2020 MERCEDES-BENZ GLA SUV check engine

*
N
NO
OTE
TE Damage totheve hicle due todriv-
ing toofast and due toimpacts tothe
ve hicle underbody or suspension compo-
nents In
thefo llowing situations, in particular, there
is a risk of damage totheve hicle:
R theve hicle becomes grounded, e.g. on a
high kerb or an unpa vedro ad
R theve hicle is driven toofast ove r an obsta-
cle, e.g. a kerb, speed bump or po thole
R a heavy object st rike sth e underbody or
suspension components
In situations such as these, damage tothe
body, underbody, suspension components,
wheels or tyres may not be visible. Compo-
nents damaged in this wa y can un expectedly
fa il or, in the case of an accident, may no lon-
ge r absorb there sulting forc e as intended.
If th e underbody panelling is damaged, 0am-
mable materials such as lea ves, grass or twigs
can collect between the underbody and the
underbody panelling. These materials may ignite if
they come into contact with hot parts
of theex haust system. #
Have theve hicle checked and repaired
immediately at a quali/ed specialist
wo rkshop.
or #
If driving saf ety is impaired while con-
tinuing your journe y,pull over and stop
th eve hicle immediatel y,while paying
attention toroad and tra1c conditions,
and contact a quali/ed specialist work-
shop. Plug-in h Plug-in h
ybr
ybr id
id
Hybrid vehicles ha vea combustion engine and an
elect ric mo tor.The energy supply for operating
th eve hicle elect rically is pr ovided bythe high-
vo ltage on-board electrical system. &
D
DAN
AN GER
GER Risk of death and /re due to
modi/ed and/or damaged components of
th e high-voltage on-board electrical sys-
tem
The vehicle's high- voltage on-board electrical
system is under high voltage. If you modify
component parts in theve hicle's high- voltage
on-board electrical system or touch damaged
component parts, you may be electrocuted. In
addition, modi/ed and/or damaged compo-
nents may cause a /re.
In theeve nt of an accident or impact tothe
ve hicle underbod y,components of the high-
vo ltage electrical system may be damaged
although the damage is not visible. #
Never make any modi/cations tothe
high- voltage on-board electrical system. #
Do not switch on or use theve hicle if its
high- voltage on-board electrical system
components ha vebeen modi/ed or dam-
aged. 28 28
General no
tes

#
Neverto uch damaged components of
th e high-voltage on-board electrical sys-
te m. #
ATer an accident, do not touch any com-
ponents of the high-voltage on-board
electrical system. #
ATer an accident, ha vetheve hicle trans-
por tedawa y. #
Have the components of the high-voltage
on-board electrical system checked at a
qu ali/ed specialist workshop and
re placed if necessar y. The components of
the high-voltage on-board
electrical system are mar ked with yellow warning
stic kers. The cables of the high-voltage on-board
electrical system are orange.
Ve hicles with hybrid systems generate signi/-
cant lyless noise when stationary and when being
driven than vehicles with combustion engines.
When driving in elect ric mode, theve hicle may
not be heard by otherroad users due tothe signif-
icantly reduced noise generated. It is
forth is reason that theve hicle is equipped
with a sound generator, which ser ves as an acous-
tic vehicle alerting system (A VAS). Declar
Declar
ations of conf
ations of conf or
ormity and not
mity and not es on dr
es on driving
iving
in
in di.er
di.er ent
entcountr
countr ies
ies Electr
Electr
omagne
omagne tic com
tic compatibility
patibility The elect
romagnetic compatibility of theve hicle
components has been checked and certi/ed
according tothe cur rently valid version of Regula-
tion UN-R 10. v
v
ehicle inst
ehicle inst alled r
alled radio com
adio com ponents
ponents Onl
Onl
y f
y for EU and EFT
or EU and EFT A countr
A countries and countr
ies and countr ies t
ies that
hat
r
r ecognise t
ecognise t he EU manuf
he EU manuf actur
acturer's declar
er's declar ation of
ation of
conf
conf or
ormity:
mity: The
following information applies toall wireless
components of theve hicle and of the information systems and communication devices integ
rated in
th eve hicle:
The manu facturers of the wireless components
ensure that all wireless components ins talled in
th eve hicle comply with Directi ve2014/53/EU.
The full texts of the EU declarations of conformity
are available at thefo llowing web address:
https://moba.i.daimler.com/mar kets/ece-r ow/
baix/cars/certi/cates-of-con form ity/en_GB/
index.html General no
tes
29
29

#
T
To switc
o switc h on t
h on the v
he vehicle:
ehicle: press button 1
twice.
Indicator and warning lamps go on in the
inst rument clus ter.
The vehicle is switched o. again if one of thefo l-
lowing conditions is met:
R V
V ehicles wit ehicles wit h aut
h aut omatic tr
omatic tr ansmission:
ansmission: You do
not start theve hicle within 15 minutes and the
transmission is in position jorthe electric
parking brake is applied.
R you press button 1once. S
S
t
tar
ar ting t
ting t he v
he vehicle
ehicle S
S
t
tar
ar ting t
ting t he v
he vehicle wit
ehicle wit h t
h the st
he st ar
art/st
t/st op butt
op butt on
on &
D
DAN
AN GER
GER Risk of fatal injuries caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vetheve hicle or, if present, the
stationa ryheater running in an enclosed
space without su1cient ventilation. &
W
WARNI NG
ARNI NGRisk of /re due to0ammable
material in the engine compartment or the
ex haust system
Flammable materials may ignite. #
Therefore, check regula rly th at there are
no 0ammable materials in the engine
compartment or on theex haust system. R
R
eq
eq uir
uir ements:
ements:
R The key is in theve hicle and is recognised. #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: ShiT
th e transmission toposition jori. #
Depress the brake pedal and press button 1
once. #
Ifth eve hicle does not start: switch o. non-
essential consumers and press but ton1
once. #
Ifth eve hicle still does not start and the dis-
play message Place the key in the marked space See Owner's Manual
appears inthe
inst rument displa y: starttheve hicle with the
ke y in the mar ked space (emer gency ope ra-
tion mode) (/ page 171).
% You can switch o. theve hicle while driving. To
do this, press button 1for about thre e sec-
onds or bypressing button 1thre e times
within thre e seconds. Be sure toobser vethe
saf ety no tes under "Driving tips"
(/ page 174).
Obser veany information rega rding display mes-
sages that can be displ ayed onthe inst rument
displa y.
S
S t
t ar
ar ting t
ting t he v
he vehicle wit
ehicle wit h t
h the ke
he key in t
y in t he mark
he mark ed
ed
space (emerg
space (emerg ency oper
ency operation mode)
ation mode)
If th eve hicle does not start and thePlace the
key in the marked space See Owner's Manual
message appears in the inst rument displa y,you
can start theve hicle in emer gency ope ration
mode. Driving and parking
171 171

Mar
ked space (e xample with cup holder without
co ver) #
Open the co ver of the mar ked space 2if
necessar y. #
Make sure that the mar ked space 2is
em pty. #
Remo vetheke y1 from theke yring. #
Place theke y1 inthe mar ked space 2on
th e symbol 3.
The vehicle will start aTer a short time.
When youre mo vetheke y1 from the mar ked
space 2,theve hicle can be driven. For fur-
th er engine starts ho wever,theke y1 must
be located in the mar ked space 2onthe
symbol 3during the entire journe y. #
Have theke y1 checked at a quali/ed spe-
cialist workshop.
If t
If t he v
he v ehicle does no
ehicle does no t st
t start:
art: #
Place theke y1 inthe mar ked space 2and
lea veitth ere. #
Depress the brake pedal and start theve hicle
using the start/s top button.
% You can switch on the po wer supply or the
ve hicle with the start/s top button.
Obser veany information rega rding display mes-
sages that can be displ ayed on the inst rument
displa y. S
S
t
tar
ar ting t
ting t he v
he vehicle via R
ehicle via R emot
emote Online Ser
e Online Ser vices
vices Cooling or heating t
Cooling or heating t
he v
he vehicle int
ehicle int er
erior bef
ior bef ore
ore
st
st ar
ar ting t
ting t he jour
he jour ney
ney
Ensu rethefo llowing before starting the engine:
R The legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone.
R It is safe tostart and runth e engine where
yo ur vehicle is par ked.
R The fuel tank is su1cient lyfull.
R The star ter battery is su1ciently charge d.
Char
Char ging t
ging t he st
he start
arter batt
er batt er
ery bef
y bef or
ore st
e st ar
arting t
ting t he
he
jour
jour ney
ney
Yo u can receive a message on your smartphone
when the state of charge ofthe star ter battery is
lo w. You can then start theve hicle with the smart-
phone tocharge the batter y.The vehicle is auto-
matically switched o. aTer ten minutes.
Ensure thefo llowing before starting the engine:
R The legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone. 172
172
Driving and parking

Obser
vethefo llowing no tes during heavy precipi-
ta tion or in conditions in whi chaquaplaning may
occur:
R reduce speed
R avoid tyre ruts
R avoid sudden steering mo vements
R brake careful ly
% Also obser vethe no tes on regula rly ch ecking
wheels and tyres (/ page 379).
N
No ot
tes on dr
es on dr iving t
iving thr
hrough w
ough w at
ater on t
er on t he r
he road sur-
oad sur-
f
f ace
ace
Wa ter which has entered into theve hicle can
damage the engine, electrics and transmission.
Wa ter can also enter the air intake of the engine
and cause engine damage.
Obser vethefo llowing if you must drive thro ugh
wa ter:
R The water,when calm, may only reach the
lo we r edge of theve hicle body.
R Drive at a maximum speed of 10 km/h; water
can otherwise enter theve hicle interior or
engine compartment. R
Vehicles tr avelling in front, or oncoming vehi-
cles, can create waves which may exceed the
maximum permissible dep thofthewa ter.
The braking e.ect of the brakes is reduced aTer
fo rd ing. Brake carefully while paying attention to
th e tra1c conditions until braking po wer has been
fully restored. N No
ot
tes on
es on o.-r
o.-r oad
oad dr
driving
iving &
W
WARNING
ARNING Risk of accident if you do not
ke ep toline of fall on inclines
If yo u drive at an angle or turn on an incline,
th eve hicle could slip side ways, tip and roll-
ove r. #
Always drive on inclines in the line of fall
(straight up or down) and do not turn. &
W
WARNING
ARNING Risk of /re due to0ammable
materials on hot parts of theex haust sys-
tem
Flammable material such as lea ves, grass or
twigs may ignite if they come into contact with
hot parts of theex haust system. #
When driving on unpa vedro ads or o.-
ro ad, regula rly ch eck theve hicle under-
side. #
Remo vetrapped plants or other 0amma-
ble material, in particular. #
Ifth ere is damage, consult a quali/ed
specialist workshop immediatel y. When driving o.-
road, sand, mud and water or
wa ter mixed with oil may get into the brakes. This
may lead toare duction in braking e.ect or total
brake failure as a result of increased wear. The
braking characteristics will vary depending on the
material that has entered the system. Clean the
brakes aTer driving o.- road. If youth en notice
re duced braking e.ect or hear scraping noises,
ha ve the brake system checked at a quali/ed spe- Driving and parking
177
177

cialist
workshop. Adapt your driving style tothe
ch anged braking characteristics.
* N
NOOTE
TE Damage caused bydriving over
obstacles The
vehicle can be damaged by:
R driving onto high kerbs or unpa vedro ads.
R quickly driving over obstacles such as
ke rbs, speed bumps or po tholes.
R heavy objects hitting the underbody or
ch assis components. #
Do not drive over obstacles that could
damage theve hicle. #
Check theve hicle regula rly fo r damage
during o.- road driving. #
Adjust theve hicle speed tosuit thero ad
sur face conditions. #
Ifth ere is damage, consult a quali/ed
specialist workshop immediatel y. +
ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmen tal
damage due tonon-obser vance of prohibi-
tion signs Environmental pr
otection has priority. Treat
nature with respect. #
Be sure toobser veprohibition signs. %
The vehicle is designed for easily negotiable
and moderate o.- road terrain. When driving
o.-road, make sure there is su1cient ground
clearance.
Chec
Chec klis
klist beft bef or
ore dr
e dr iving
iving o.-r
o.-r oad
oad
Check thefo llowing points before driving o.- road:
R Fuel le vel
R V
Vehicles wit
ehicles wit h a diesel engine:
h a diesel engine: AdBlue ®
level
R Engine oil le vel: /ll engine oil tothe maximum
le ve lto ensure full gradeability (/ page 345)
R Tyre-change tool kit and spare wheel
R Tyres and wheels O.-r
O.-r
oad
oaddr
driving
iving
Re ad this section before driving your vehicle o.-
ro ad. Practise bydriving over more gentle o.-road
te rrain /rst.
R Obser vethe no tes on the cross-country ABS
(/ page 228).
R If necessar y,select theF (/page 187)
drive prog ram before driving o.-road.
R Alwayske ep the engine running and in gear
when driving on downhill gradients and slopes.
Obser vethe no tes on driving in moun tainous
te rrain.
R Do not drive on unkn ownte rrain that is not
easily visible and st ayon mar kedro utes.
R Alwayske ep the doors and windo wsclosed
while theve hicle is in motion.
R Deactivate Active Distance Assist DISTRONIC,
cruise control and theva riable limi ter.
R Adapt your driving style tothete rrain.
R Do not use the HOLD function on steep down-
hill or uphill gradients with slippery or loose
sur faces. 178
178
Driving and parking

Dr
Dr
iving on sand
iving on sand
When driving on sand, also obser vethefo llowing
inst ructions:
R Select theF drive prog ram.
R ShiT toa lo werge ar.
R Drive quickly toove rcome the rolling resist-
ance; theve hicle may otherwise dig itself in.
R Drive in the trac ksofother vehicles if possi-
ble. Make sure that thefo llowing prerequisites
are met:
- the tyre ruts are not too deep
- the sand is /rm enough
- thegr ound clearance is su1cient
F F or
or ding ding
Also obser vethefo llowing information when ford-
ing:
R Drive no faster than 10 km/h.
R The water,when calm, may only reach the
lo we r edge of theve hicle body.
R Switch o. automatic climate cont rol
( / page 159). R
V
V ehicles wit
ehicles wit h st
h stationar
ationar y heat
y heater/v
er/ventilation:
entilation:
switch the stationary heater/ventilation o.
(/ page 164).
R Ensure that a bow wave does not form asyou
drive.
R Do not stop in thewa ter and do not switch o.
th e engine. Ensure the ECO start/s top func-
tion is switched o. (/ page 181).
Dr Dr iving in mount iving in mount ainous t
ainous terr
errain
ain
Also obser vethefo llowing information when driv-
ing in mountainous terrain:
R Obser vetheva lues of the approach/depar-
ture angle and of the maximum gradient
(/ page 413).
R Avoid high engine speeds.
R Use the braking po wer of the engine when
driving downhill.
R ShiT toa lo werge ar on uphill gradients and on
long, steep downhill gradients.
R Activate DSR before driving downhill, if neces-
sary (/ page 244). Chec
Chec klis
klisttaTer
aTer dr
driving
iving o.-r
o.-road
oad
Driving o.- road places greater demands on your
ve hicle than driving on normal roads. Check the
entire vehicle for damage and fore ign bodies
ev ery time aTer driving o.- road. Foreign bodies in
th e wheels or driv etra in can lead toimbalances
and therefore vibrations.
R Ifth eF drive prog ram is selected: select
ano ther drive prog ram.
R Deactivate DSR.
R Apply the brakes todry them aTer ford ing.
R Check that the service brake is working nor-
mally aTer a long downhill str etch.
R Clean thefo llowing components every time
aTer driving o.- road:
- licence plate number
- headlamps and tail lamps
- tyres, wheels and wheel ar ches
- underbody
R ATer driving thro ugh sand, mud, water or
gr av el, ha vethefo llowing components
ch ecked and cleaned: Driving and parking
179
179

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