2018 MERCEDES-BENZ A-CLASS HATCHBACK battery

Climate control
......................................... 141
Overview of climate contro l systems ........... 141
Operating the climate control sy stem ......... 14 2 Driving and pa
rking .................................. 151
Driving ........................................................ 151
DY NA MIC SELECT switch ............................1 60
Manual transmission .................................. 16 2
Au tomatic transmission .............................. 16 4
Re fuelling .................................................... 16 9
Pa rking ........................................................ 175
Driving and driving sa fety sy stems .............1 84
Tr ailer hit ch................................................. 24 2
Bicycle rack function .................................. 24 5
Ve hicle towing instructions ........................ .247 Instrument Display and on-board
compu ter.................................................. 248
Instrument display overview ...................... .248
Overview of the buttons on thesteering
wheel ..........................................................2 49
Operating the on-board computer .............. 250
Ad justing the design of the instrument
display ........................................................ 251 Showing display conte
nt onthe instru‐
ment clus ter ............................................... 252
Overview of displa yson the multifunc‐
tion display .................................................2 53
Ad justing the instrument lighting ............... 253
Menus and submenus ................................ 254
Head-up Display ......................................... 260 LINGU
ATRO NIC ......................................... 261
No tes on operating saf ety .......................... .261
Operation ....................................................2 61
Using LINGU ATRO NIC ef fectively ............... 264
Essential voice commands ........................ .265 MBUX multimedia sy
stem ...................... 280
Overview and operation .............................. 280
Sy stem settings ...........................................3 11
Fit & Healt hy............................................... 320
Na vigation .................................................. 324
Te lephone .................................................. .366
Online and Internet functions ..................... 396
Media ........................................................ .405
Ra dio ...........................................................4 12
Sound ......................................................... 41 5 Maintenance and care
.............................419
ASS YST PLUS service inter val display ........ .419
Engine compartment .................................. 420
Cleaning and care ....................................... 427 Breakdown assistance
............................436
Emergency ................................................. .436
Flat tyre ...................................................... 438
Battery (vehicle) ......................................... 444
To w- starting or towing away ....................... 449
Electrical fuses ........................................... 454 Wheels and tyres
..................................... 458
No tes on noise or unusual handling char‐
acteristics .................................................. .458
No tes on regular lyinspecting wheels and
tyres .......................................................... .458
No tes on snow chains ................................ 458
Ty re pressure .............................................. 459
Wheel change ............................................ .468
Emergency spa rewheel .............................. 477 Con
tents 3

Diagnostics connection
The diagnostics connection is on ly intended for
th e connection of diagnostic devices at a quali‐
fi ed specialist workshop. &
WARNING Risk of accident due tocon‐
necting devices tothe diagnostics con‐
nection
If yo u connect equipment toa diagnostics
connection in theve hicle, it may af fect the
operation of vehicle sy stems.
As a result, the operating saf ety of theve hi‐
cle could be af fected. #
Only connect equipment toa diagnos‐
tics connection in theve hicle which is
appr ovedfo ryo ur vehicle byMercedes-
Benz. &
WARNING Risk of accident due to
objects in the driver's foot we ll
Objects in the driver's foot we ll may impede
pedal tr avel or block a depressed pedal. This jeopardises
the operating and road
saf ety of theve hicle. #
Stow all objects in theve hicle securely
so that they cannot getinto the driver's
fo ot we ll. #
Alw aysfit th efloor mats securely and
as prescribed in order toensure that
th ere is alw ays suf ficient room forthe
pedals. #
Do not use loose floor mats and do not
place floor mats on top of one ano ther. *
NO
TEBattery discharging from using
devices connected tothe diagnostics
connection Using devices at
the diagnostics connection
drains the batter y. #
Check thech arge leve l of the batter y. #
Ifth ech arge leve l is lo w,charge the
batter y,e.g. bydriving a considerable
dis tance. Connecting equipment
tothe diagnostics con‐
nection can lead toemissions monitoring infor‐
mation being reset, forex ample. This may lead
to theve hicle failing tomeet therequ irements of
th e next emissions inspection during the main
inspection. Qualified specialist
workshop
A qu alified specialist workshop has the neces‐
sary special skills, tools and qualifications to
cor rectly car ryout any necessary workon your
ve hicle. This particularly applies tosaf ety-re le‐
va nt wo rks.
Alw ays ha vethefo llowing workcar ried out on
yo ur vehicle at a qualified specialist workshop:
R safety-re leva nt wo rks
R service and maintenance work
R repair work
R modifications as well as ins tallations and
con versions
R workon electronic components General no
tes25

yo
ur vehicle as well as on possible vehi‐
cle damage. QR code
forre scue card
The QR code is secured in the fuel filler flap and
on the opposite side on the B-pillar. In theeve nt
of an accident, rescue services can use the QR
code toquickly find the appropriate rescue card
fo ryo ur vehicle. The cur rent rescue card con‐
ta ins the most impor tant information about your
ve hicle in a compact form , e.g. thero uting of the
electric lines.
Fu rther information can be obtained at http://
www.mercedes-benz.de/qr-code. Data
storage Electronic control units
Elect
ronic control units are fitted in your vehicle.
Some of these are necessary forth e safe opera‐
tion of your vehicle, while some assist you when
driving (driver assis tance sy stems). In addition,
yo ur vehicle pr ovides com fort and enter tainment functions, which are also made possible
byelec‐
tronic control units.
Elect ronic control units contain da tamemories
which cantemp orarily or permanently store
te ch nical information about theve hicle's operat‐
ing state, component loads, main tenance
re qu irements and tech nical events or faults.
In general, this information documents thest ate
of a component part, a module, a sy stem or the
sur roundings such as:
R operating states of sy stem components (e.g.
fl uid le vels, battery status, tyre pressure)
R status messages concerning theve hicle or
its individual components (e.g. number of
wheel revo lutions/speed, decele ration in
mo vement, lateral accele ration, display of
fast ened seat belts)
R malfunctions or defects in impor tant sy stem
components (e.g. lights, brakes)
R information on events leading tovehicle
damage
R system reactions in special driving situations
(e.g. airbag deployment, inter vention of sta‐
bility control sy stems) R
ambient conditions (e.g. temp erature, rain
sensor)
In addition toprov iding the actual control unit
function, this data assists the manufacturer in
de tecting and rectifying faults and optimising
ve hicle functions. The majority of this data is
te mp orary and is only processed in theve hicle
itself. Only a small portion of the data is stored
in theeve nt or fault memor y.
When your vehicle is serviced, tech nical da ta
from theve hicle can be read out byservice net‐
wo rkemplo yees (e.g. workshops, manufactur‐
ers) or third parties (e.g. breakdown services).
Services include repair services, maintenance
processes, warranty cases and quality assurance
measures, forex ample. The read out is per‐
fo rm ed via the legally prescribed port forthe
diagnostics connection in theve hicle. The
re spective service network locations or third
parties collect, process and use the data. They
document tech nical statuses of theve hicle,
assist in finding faults and impr oving quality and
are transmit tedto the manufacturer, if neces‐
sar y.Fu rthermore, the manufacturer is subject General no
tes27

Key
Overview of
key functions &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could:
R open doo rs,th ereby endangering other
persons or road users.
R get out of theve hicle and be hit by
oncoming traf fic.
R ope rate ve hicle equipment and become
trapped, forex ample.
In addition, children could also set theve hi‐
cle in motion, forex ample, by:
R releasing the parking brake.
R shifting the automatic transmission out of
park position jor shifting manual trans‐
mission into idle position.
R starting the engine. #
Never lea vechildren and animals unat‐
te nded in theve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle.
This also applies tothe Digital Vehicle
Ke y if the "Digital Vehicle Key" function
is activated via Mercedes me connect. #
Keep theve hicle key out of reach of
ch ildren. This also applies tothe Digital
Ve hicle Key if the "Digital Vehicle Key"
function is activated via Mercedes me
connect. *
NO
TEDama getotheke y caused by
magnetic fields #
Keep theke yaw ay from strong mag‐
netic fields. 1
Locks
2 Battery check lamp
3 Unloc ks
% The key may vary from the one shown in the
diagram, depending on theve hicle equip‐
ment.
The key loc ksand unlo cksth efo llowing compo‐
nents:
R the doors
R the fuel filler flap
R theta ilgate Opening and closing
65

The indicator lamp in
the door trim on the driv‐
er's side flashes when theve hicle is loc ked from
outside. The indicator lamp goes out if theve hi‐
cle is loc ked from inside or while theve hicle is in
motion.
If th eve hicle is not opened within appr oximately
40 seconds af ter unlocking, it loc ksagain. Anti-
th eft pr otection is primed again.
Do not keep theke yto ge ther with electronic
devices or me tal objects. This can af fect the
ke y's functionalit y.
% If battery check lamp 2does not light up
af te r pressing the% or& button, the
battery is dischar ged.
Re placing theke y bat tery ( →page 67). Ac
tivating/deactivating the acoustic lo cking
ve rification signal Multimedia sy
stem:
, © .
Settings .
Vehicle #
Activate or deacti vate Acoustic lock . Ac
tivating/deactivating the panic alarm Re
quirements:
% The panic alarm function is only available in
cer tain countries.
R The ignition is switched off. #
Toactivate: press button 1for appro x‐
ima tely one second.
A visual and audible alarm is triggered. #
Todeactivate: briefly press but ton1 again.
or #
Press thest art/ stop button on the cockpit
(the key is inside theve hicle). Changing
the unlocking settings Po
ssible unlocking functions of theke y:
R cent ral unlocking
R unlocking the driver's door and fuel filler flap #
Toswitch between settings: pressthe
% and& buttons simultaneously for
appr oximately six seconds until the battery
ch eck lamp flashes twice.
If th e unlocking function forth e driver's door
and fuel filler flap has been selec ted:
R pressing the% button a second time cen‐
trally unloc kstheve hicle
R Vehicles with KEYLESS-GO: ifyo uto uch
th e inner sur face of the door handle on the
driver's door, only the driver's door and fuel
fi ller flap are unlo cked. Deactivating
theke y functions If
yo u do not use theve hicle or a keyfo r an
ex tended pe riod of time, you can reduce the
energy consum ption of there spective key.Todo
so, deactivate theke y functions. 66
Opening and closing

#
Todeactivate: pressthe& button on the
ke y twice in quick succession.
The battery check lamp of theke yflashes
twice brief lyand lights up once. #
Toactivate: press any button on thekey.
% When theve hicle is star ted with theke y in
th estow age compartment of the cent recon‐
sole, theke y functions are automatical ly
activated (→ page154). Re
moving/inserting the eme rgency key #
Toremo ve:press release button 1.
Emer gency key2 is pushed out slight ly. #
Pull out emer gency key2 until it en gage s in
th e intermediate position.
% You can use the intermediate position of
emer gency key2 toattach theke yto akey
ri ng. #
Press release button 1again and fully
re mo veemer gency key2. #
Toinser t:press release button 1. #
Insert emer gency key2 tothe intermediate
position or fully until it engages.
% Depending on theve hicle's equipment, the
intermediate position is not available. Re
placing the key battery &
DANG ER Serious damage tohealth
caused byswallowing batteries
Batteries contain toxic and cor rosive sub‐
st ances. Swallowing bat teries may cause
serious damage tohealth.
There is a risk of fata l injur y. #
Keep batteries out of there ach of chil‐
dren. #
If batteries are swallo wed, seek medical
attention immediately. +
ENVIRONMEN
TALNO TEEnvironmental
dama gedue toimproper disposal of bat‐
te ries Batteries conta
in pollutants. It is
illegal todispose of them with the household
ru bbish. #
Dispose of batteries in an
environmen tally responsible manner.
Ta ke dischar ged batteries toaqu alified
specialist workshop or toa collection
point for used batteries. Opening and closing
67

Re
quirements:
R Yourequ ire a CR 2032 3 V cell batter y.
Mercedes-Benz recommends that you ha vethe
battery replaced at a qualified specialist work‐
shop. #
Remo vethe emer gency key ( → page 67). #
Press release button 2down fully and slide
co ver1 inthe direction of the ar row. #
Fold out co ver1 inthe direction of the
ar row and remo ve. #
Remo vebattery compartment 3and take
out the dischar ged batter y. #
Insert the new battery into battery compart‐
ment 3. Obser vethe positive pole marking
in the battery compartment and on the bat‐
te ry when doing this. #
Push in battery compartment 3. #
Re-attach co ver1 and push it until it
engages. Problems with
thekey Problem
Possible causes/consequences and M
MSolutions
Yo u can no lon ger lock or unlock the
ve hicle. Po
ssible causes:
R The key bat tery iswe ak or dischar ged.
R There is inter fere nce from a po werful radio signal source. 68
Opening and closing

Problem
Possible causes/consequences and M
MSolutions
R The key is faulty. #
Check the battery using the battery check lamp and replace if necessary (→ page67). #
Use the emer gency keyto lock or unlock (→ page67). #
Have theke ych ecked at a qualified specialist workshop.
Yo u ha velost a key. #
Have theke y deacti vated at a qualified specialist workshop. #
If necessar y,ha ve the mechanical lock changed as well. Doors
Note
s onthe additional door lock The additional door lock is only
available for
ve hicles forth eUni ted Kingdom. &
WARNING Risk of inju ryto persons
inside theve hicle when the additional
door lock is activated
If th e additional door lock is activated, the
doors can no longer be opened from the
inside. If
th ere are persons in theve hicle, they can
no longer le aveth eve hicle, e.g. in hazardous
situations. #
Never lea vepersons unattended in the
ve hicle, particularly children, elderly
persons or persons in need of help. #
Ifth ere are persons in theve hicle, do
not activate the additional door loc k. The additional door lock is automatically activa‐
te d in thefo llowing situations:
R The vehicle is loc ked using thekey.
R The vehicle is loc ked using KEYLESS-GO. If
th eve hicle has been loc ked via Mercedes me
connect, the additional door lock is not activa‐
te d.
If th e additional door lock is activated, the doors
cann otbe opened from the inside.
% After locking you can issue a signal with the
horn.
Yo u can pr eventthe additional door lock from
being activated bydeactivating interior pr otec‐
tion before locking theve hicle (→ page87). Opening
and closing 69