2018 MERCEDES-BENZ A-CLASS HATCHBACK Owners Manual

R
Screw theva lve cap onto theva lve.
R Stow the deflated emer gency spa rewheel in
th e emer gency spa rewheel bag in the lug‐
ga ge compa rtment (→ page478).
Obse rveth efo llowing no tes on fitting an emer‐
ge ncy spa rewheel:
R Fitthe emer gency spa rewheel when it is
deflated (→ page475).
R Inflate the emer gency spa rewheel af terfit‐
ting it (→ page 478).
The maximum permissible speed with an emer‐
ge ncy spa rewheel fitted is 80 km/h.
Do not fit th e emer gency spa rewheel with sn ow
ch ains.
Re place the emer gency spa rewheel af ter six
ye ars at the latest, rega rdless of wear.
% Ve
hicles with a tyre pressure loss warn‐
ing sy stem: if an emer gency spa rewheel is
fi tted the tyre pressure loss warning sy stem
cann otfunction reliabl y.Only restart the sys‐
te m again when the emer gency spa rewheel
has been replaced with a new wheel. Ve
hicles with a tyre pressure monitoring
sy stem: if an emer gency spa rewheel is fit‐
te dth e tyre pressure monitoring sy stem can‐
not function reliabl y.Only restart the sy stem
again when the emer gency spa rewheel has
been replaced with a new wheel.
Ve hicles with a tyre pressure monitoring
sy stem: for a few minutes af ter an emer‐
ge ncy spa rewheel is fitted, the sy stem may
st ill display the tyre pressure of there mo ved
wheel.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (→ page 459)
R Tyre pressure table (→ page 460) Re
moving the eme rgency spa rewheel The deflated eme
rgency spare wheel is secured
in the emer gency spa rewheel bag in the load
compartment. #
Obser vethe information on mounting tyres
(→ page 468). #
Open theta ilgate. #
Detach thefast ening stra ps. #
Unhook there taining spring hooks of thefa s‐
te ning stra ps from the brac kets. #
Remo vethe emer gency spa rewheel bag with
th e emer gency spa rewheel. #
Open the emer gency spa rewheel bag and
re mo vethe emer gency spa rewheel. Inflating
the emer gency spare wheel *
NO
TEOverheating due tothe tyre infla‐
tion compressor running too long #
Do not runth e tyre inflation compres‐
sor for longer than ten minu tes without
inter ruption. Re
quirements:
R Comply with the manufacturer's saf ety no tes
on thest icke r of the emer gency spa rewheel
and on the tyre inflation compressor.
R Remo vethe tyre inflation compressor from
th estow age space under the luggage com‐
partment floor (→ page 439). 478
Wheels and tyres

#
Remo vesticke r1 from the tyre inflation
compressor housing and af fix it tothe instru‐
ment clus ter within the driver's field of
vision. #
Pull filler hose 2and plug 4out of the tyre
inflation compressor housing. #
Insert plug 8offiller hose 2inthe soc ket
on the tyre inflation compressor and then
turn it until plug 8engages. #
Unscr ew the cap from theva lve on the emer‐
ge ncy spa rewheel. #
Screw union nut 3offiller hose 2onto the
va lve. #
Make sure on and off switch 5ofthe tyre
inflation compressor is set to0. #
Insert plug 4into a soc ket in your vehicle.
R Cigar ette lighter soc ket: ( → page 114)
R 12V soc ket: ( → page 115)
R Obse rveth e no tes on the cigar ette lighter:
(→ page 114)
R Obse rveth e no tes on soc kets: (→ page 115) #
Turn theke yto position 1inthe ignition
loc k. #
Press on and off switch 5onthe tyre infla‐
tion compressor toI.
The tyre inflation compressor is switched on.
The tyre is inflated. The tyre pressure is
shown on manome ter6. #
Pump the tyre tothe specified tyre pressure.
The specified tyre pressure is stated on the
label of the emer gency spa rewheel. #
When the specified tyre pressure has been
re ached, press on and off swit ch5 onthe
tyre inflation compressor to0.
The tyre inflation compressor is switched off. #
Turn theke yto position ginthe ignition
loc k. #
Ifth e tyre pressure is higher than the speci‐
fi ed pressure, press pressure release valve
bu tton 7until the cor rect tyre pressure has
been reached. #
Unscr ew union nut 3offiller hose 2from
th eva lve. #
Screw theva lve cap of the emer gency spa re
wheel onto theva lve again. Wheels and tyres
47 9

#
Stow filler hose 2and plug 4inthe lo wer
section of the compressor housing. #
Stow th e tyre inflation compressor in the
ve hicle. 480
Wheels and tyres

Note
s ontech nical data
The tech nical da tawa s de term ined in accord‐
ance with EU Directives. The data stated on ly
applies tovehicles with standard equipment. Yo u
can obtain fur ther information from a Mercedes-
Benz Service Centre.
Only for ce rtain countries: you can find vehi‐
cle-specific vehicle data in the EC-Certificate of
Conformity (CERTIFIC ATE OF CONFORMITY).
These documents are deli vered with your vehi‐
cle. On-board electronics
Note
s on tampering with the engine elec‐
tronics *
NO
TEPremature wearthro ugh improper
main tenance Improper maintenance may cause
vehicle
components towe ar more quickly and the
ve hicle's operating permit may be in valida‐
te d. #
Alw ays ha vewo rkon the engine elec‐
tronics and related components car ried
out at a qualified specialist workshop. Tw
o-w ayradios Note
s onfitting two-w ayradios &
WARNING Risk of accident due to
improper workon two-w ayradios
The elect romagnetic radiation from two-w ay
ra dios can inter fere with the on-board elec‐
tronics if RF transmit ters are manipulated or
re trofitted inco rrectly.
This could jeopardise the operating saf ety of
th eve hicle. #
You should ha veall workon electrical
and electronic components car ried out
at a qualified specialist workshop. &
WARNING Risk of accident from incor‐
re ct ope ration of two-w ayradios
If yo u operate two- wayra dios inco rrectly in
th eve hicle, the electromagnetic radiation
could inter fere with the on-board electronics,
e.g.:
R ifth e two-w ayradio is not connec tedto
an exterior aerial
R ifth eex terior aerial is not cor rectly
mounted or is not of low reflection
This could jeopardise the operating saf ety of
th eve hicle. #
Have the lo w-reflection exterior aerial
fi tted at a qualified specialist workshop. #
When operating two-w ayradios in the
ve hicle, alw ays connect them tothe
lo w- reflection exterior aerial. Te
ch nical da ta481

*
NO
TEInva lidation of the operating per‐
mit due tofailure tocomply wi th the
instructions for ins tallation and use The operating permit may be in
validated if
th e instructions for ins tallation and use of
two-w ayradios are not obser ved. #
Only use appr oved frequency bands. #
Obser vethe maximum permissible out‐
put po wer in these frequency bands. #
Only use appr oved aerial positions. 1
Front roof area
2 Rear roof area
3 Rear wings
On vehicles with a panoramic sliding sunroof, fit‐
ting an ae rial to the front or rear roof area is not
permitted. On
there ar wings, it is recommended that you
fi t th e aerial on the side of theve hicle closest to
th e cent reofthero ad.
Use Tech nical Specification ISO/TS 21609 (Road
Ve hicles – "EMCs for ins tallation of af term arket
ra dio frequency transmitting equipment") when
re trofitting two-w ayradios. Comply with the
legal requirements for de tach able parts.
If yo ur vehicle has fittings for two-w ayradio
equipment, use the po wer supp lyand aerial con‐
nec tors prov ided in the pre-ins tallation. Be sure
to obser vethe manufacturer's supplements
when fitting.
Tw o-w ayradio transmission output
The maximum transmission output (PEAK) at the
base of the aerial must not exceed theva lues in
th efo llowing table. 482
Tech nical da ta

Fr
equency band and maximum transmission
output Fr
equency band Maximum transmis‐
sion output
Sho rtwa ve
3 - 54 MHz 10
0 W
4 m waveband
74 - 88 MHz 30 W
2 m waveband
14 4 - 174 MHz 50 W
Tr unked radio sys‐
te m/T etra
380 - 460 MHz 10 W
70 cm waveband
420 - 450 MHz 35 W
Tw o-w ayradio
(2G/3G/4G) 10 W The
following devices can be used in theve hicle
without restrictions:
R two-w ayradios with a maximum transmission
output of up to100 mW
R two-w ayradios with transmit ter frequencies
in the 380 - 410 MHz frequency band and a
maximum transmission output of up to2 W
(trunked radio sy stem/T etra)
R mobile phones (2G/3G/4G)
There are no restrictions when positioning the
aerial on the outside of theve hicle forth efo llow‐
ing wavebands:
R trunked radio sy stem/T etra
R 70 cm waveband
R 2G/3G/4G Ve
hicle identification plate, VIN and engine
number
Ve hicle identification plate Te
ch nical da ta483

Ve
hicle identification plate (e xample:Kuwa it)
1 Vehicle manufacturer
2 Place of manufacture
3 Manufacturing date
4 Vehicle model
5 VIN Ve
hicle identification plate (e xample: all
ot her countries)
1 Vehicle manufacturer
2 EUgeneral operating pe rmit number (only
fo r cer tain countries)
3 VIN (vehicle identification number)
4 Maximum permissible gross vehicle weight
(kg) 5
Maximum permissible gross weight of vehi‐
cle combination (kg) (only for specific coun‐
tries)
6 Perm issible front axle load (kg)
7 Perm issible rear axle load (kg)
8 Paint code
% The data shown in the illustration is example
data. 484
Tech nical da ta

VIN and engine number
1
Imprinted engine number stamped into the
crankcase
2 Imprinted VIN (vehicle identification number)
stamped into the crossmember
3 VIN (vehicle identification number) as a label
at the lo wer edge of the windscreen
The VIN as a label at the lo wer edge of the wind‐
screen 3is only available in some countries.
Yo u can obtain fur ther information from any
qu alified specialist workshop. Operating
fluids Note
s on operating fluids &
WARNING Risk of inju ryfrom operating
fl uids harmful to your health
Operating fluids may be poisonous and harm‐
ful to yo ur health. #
Obser vethete xt on the original con‐
ta iners when using, storing or disposing
of operating fluids. #
Alw aysst ore operating fluids sealed in
th eir original conta iners. #
Alw ayske ep children away from operat‐
ing fluids. +
ENVIRONMEN
TALNO TEEnvironmental
pollution caused byenvironmen tally ir re‐
sponsible disposal #
Dispose of operating fluids in an envi‐
ro nmentally responsible manner. Operating
fluids include thefo llowing:
R fuels
R DeNOx agent AdBlue ®
forex haust gas af ter‐
treatment
R lubri cants
R coolant
R brake fluid
R windsc reen washer fluid
R climate cont rol sy stem refrigerant
Only use products app rove dby Mercedes-Benz.
Damage caused bythe use of products that ha ve
not been appr oved is not co veredby the
Mercedes-Benz warranty or goodwill gestures.
Yo u can identify operating fluids appr ovedby
Mercedes-Benz bythefo llowing insc ript ions on
th e conta iner:
R MB- Freigabe (e.g. MB-Fr eigabe 229.51 )
R MB-Appr oval (e.g. MB-App rova l 229.51) Te
ch nical da ta485