battery MERCEDES-BENZ A-CLASS HATCHBACK 2018 User Guide

Exterior lighting
Note
s onchanging the lights when driving
abroad It is not necessary
tochange the headlamps.
The legal requirements are also met in countries
in which traf fic drives on theot her side of the
ro ad. Information about lighting sy
stems and your
re sponsibility The
various lighting sy stems of theve hicle are
only aids. The driver of theve hicle is responsible
fo r cor rect vehicle illumination in accordance
with the pr evailing light and visibility conditions,
legal requirements and traf fic situation. Light switch
Ope
rating the light switch 1
W Left pa rking light
2 X Right parking light
3 T Standing lights and licence plate light‐
ing
4 Ã Automatic driving lights (prefer red light
switch position) 5
L Low beam/high beam
6 R Switches there ar fog lights on or off
When low beam is activated, the indicator lamp
fo rth est anding lights Tis deactivated and
re placed bythe low beam indicator lamp L. #
Alw ays park your vehicle safely and in a well-
lit area, in accordance with there leva nt le gal
st ipulations.
* NO
TEBattery discharging byoperating
th est anding lights Operating
thest anding lights over a period of
hours puts a stra in on the batter y. #
Where possible, switch on the
ri ght X or left Wparking light. In
the case of se vere battery discharging, the
st anding lights or parking lights are automati‐
cally swit ched off tofacilitate the next engine
st art.
The exterior lighting (e xcept standing and park‐
ing lights) swit ches off automatically when the
driver's door is opened. 12 2
Light and sight

&
WARNING Risk of accident due tomis‐
judgement of dis tances when using the
outside mir ror
The outside mir rors reflect objects on a
smaller scale. The objects in view are in fact
closer than they appear.
As a result, you may misjud gethe dis tance
between you and thero ad user driving
behind you, e.g. when changing lanes. #
Therefore, alw ays look over your shoul‐
der in order toensure that you are
aw are of the actual dis tance between
yo u and thero ad users driving behind
yo u. #
Tofold in or out: brieflypress button 2. #
Toset:press button 1or3 toselect the
outside mir rorto be adjus ted. #
Press button 4toadjust the position of the
mir rorgl ass.
% Ifth e battery has been disconnected or com‐
ple tely discharged, you must reset the out‐ side mir
rors. Only then will the automatic
mir rorfo lding function workproperly. #
Toadjus t:briefly press button 2.
An outside mir rorth at has been pushed out of
position can be engaged in position again as fol‐
lo ws: #
Vehicles without electrical lyfolding out‐
side mir rors: manually mo vethe outside
mir ror into the cor rect position. #
Vehicles with electrical lyfolding outside
mir rors: press and hold button 2.
Yo u will hear a click and the mir ror will audi‐
bly engage in position. The outside mir ror is
set tothe cor rect position. Au
tomatic anti-dazzle mir rors function &
WARNING Risk of bu rns and poisoning
due tothe anti-dazzle mir ror electrolyte
Electrolyte may escape if theglass in an
automatic anti-dazzle mir ror breaks.
The electrolyte is harmful and causes ir rita‐
tion. It mu stnot come into contact wi thyour 13 8
Light and sight

Switching
thest ationary heater/stationary
ve ntilation on/off via the control panel &
DANG ER Risk of fata l injury due topoi‐
sonous exhaust gases
If th eta ilpipe is bloc ked or suf ficient ventila‐
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter theve hi‐
cle. This is the case in enclosed spaces or if
th eve hicle getsst uck in sn ow,fo rex ample. #
Alw ays switch thest ationary heater off
in enclosed spaces without an air
ex traction sy stems, e.g. in garage s. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
engine or thest ationary heater are run‐
ning. #
Open a window on the windward side of
th eve hicle toensure an adequate sup‐
ply of fresh air. &
WARNING Risk offire due tohot station‐
ary heater components
When thest ationary heater is swit ched on,
parts of theve hicle can become very hot,
e.g. thest ationary heater exhaust sy stem.
Flammable materials such as lea ves, grass or
twigs may ignite if they come into contact
wi th:
R hot parts of thest ationary heater exhaust
sy stem
R theex haust gas itself #
When thest ationary heater is swit ched
on, make sure that:
R hot vehicle parts do not come into
contact with flammable materials.
R theex haust gas can flow out of the
st ationary heater tailpipe unhin‐
dered.
R theex haust gas does not come into
contact with flammable materials. *
NO
TEBattery discharge caused bysta‐
tionary heater or stationary ventilation
operation Ope
rating thest ationary heater or stationary
ve ntilation drains the batter y. #
After heating or ventilating theve hicle
twice, drive for a longer period of time. Re
quirements:
R The fuel tank has been filled toat least Õ. Climate control
14 5

Re
placing the remo tecont rol bat tery (sta‐
tiona ryheater) &
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
intoxic and cor ro‐
sive subs tances. #
Ta
ke dischar ged batteries to a
qu alified specialist workshop or to a
collection point for used batteries. Re
quirements:
R a CR2450 lithium battery #
Press a pointed object into recess 1. #
Slide battery co ver2 backwards in the
direction of the ar row. #
Insert new battery 3with the lettering
fa cing up wards. #
Slide battery co ver2 inthe opposite direc‐
tion tothe ar row onto there mo tecontrol
until the battery co ver engages. 14 8
Climate cont rol

Problems with
there mo tecont rolfo r the stationary heater/stationary ventilation Problem
Possible causes/consequences and M
MSolutions
FA IL¨ The signal transmission between
the transmit ter and theve hicle is faulty. #
Chan geyour position in relation totheve hicle, moving closer if necessar y.
FA IL Thestar ter battery is not suf ficiently charge d. #
Char gethest ar ter batter y.
The fuel tank content is below there ser vefuel le vel. #
Refuel at the nearest filling station.
FA IL¯ The
stationary heater is malfunctioning. #
Have thest ationary heater checked at a qualified specialist workshop. Air
vents Ad
justing the front air vents &
WARNING ‑ Risk of bu rns/frostbite due
to not maintaining a su fficient dis tance
to the air vents
Ve ry hot or very cold air can flow from the air
ve nts. This could
result in burns or frostbite in the
immediate vicinity of the air vents. #
Alw ays ensure that all vehicle occu‐
pants maintain a suf ficient di stance to
th e air vents. #
If necessa ry,re direct the air flow to
ano ther area of theve hicle interior. To
guarantee the fresh air supply thro ugh the air
ve nts into theve hicle interior, comply with the
fo llowing:
R Alw ayske ep theve nts and theve ntilation
grille in theve hicle interior free.
R Keep the air inlet free of deposits
(→ page 427). Climate control
14 9

St
arting theve hicle via Remo teOnline serv‐
ices Cooling or heating
theve hicle interior before
commencing your journey
% This function is not available in all countries.
If yo ustart theve hicle via your smartphone, the
pr ev iously selec ted air conditioning adjustment
is active.
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.
R it is safe tostart and runth e engine where
yo ur vehicle is par ked.
R the fuel tank is su fficiently filled.
R thest ar ter battery is suf ficiently charge d.
% You can also set thete mp erature with your
smartphone. In form ation on Mercedes me
connect and other services: http://
www.mercedes.me
This function is not available for all models. Charging
the bat tery before commencing
yo ur journey
R Ifth eve hicle battery is discharged, you
re cei vea message on your smartphone.
R You can then start theve hicle with the
smartphone tocharge the batter y.
R The vehicle is automatically switched off
af te rte n minu tes.
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.
R it is safe tostart and runth e engine where
yo ur vehicle is par ked.
R the fuel tank is su fficiently filled. St
arting theve hicle &
WARNING Risk of crushing or entrap‐
ment due tounin tentional starting of the
engine
Limbs could be crushed or trapped if the
engine is star ted unintentionally during
service or maintenance work. #
Alw ays secure the engine against unin‐
te ntional starting before car rying out
maintenance or repair work. Re
quirements:
R park position jis selected.
R the anti- theft alarm sy stem is not activated.
R the panic alarm is not activated.
R the hazard warning lights are switched off.
R the bonn etis closed.
R the doors are closed and loc ked.
R the windo wsand sliding sun roof are closed. #
Start theve hicle using the smartphone: Driving and parking
15 5

Note
s on parking up theve hicle If
yo u lea vetheve hicle par ked up for longer than
fo ur we eks, the disconnected battery may be
damaged bydeep dischar ge.
If yo u lea vetheve hicle par ked up for longer than
six weeks, it may suf fer disuse dama ge.
% Further information can be obtained at a
qu alified specialist workshop. St
andby mode (extension of the star ter bat‐
te ry 's period out of use) St
andby mode function
% This function is not available for all models.
If standby mode is activated, theve hicle can be
par kedfo r an extended pe riod of time without
losing po wer.
St andby mode is characterised bythefo llowing:
R thest ar ter battery is preser ved.
R the maximum non-operational time out of
use is displa yed in the multimedia sy stem
displa y. R
functions such as interior pr otection or tow-
aw ay protection are not available.
R the connection toonline services is inter rup‐
te d.
If th efo llowing conditions are fulfilled, standby
mode can be activated or deactivated using the
multimedia sy stem:
R the engine is switched off.
R the ignition is switched on.
Exceeding theve hicle's displa yed non-opera‐
tional time may cause incon venience, i.e. it can‐
not be guaranteed that thest ar ter battery will
re liably start the engine.
The star ter battery must be charge dfirs t in the
fo llowing situations:
R theve hicle's non-operational time must be
ex tended.
R theBattery charge insufficient for standby
mode message appears in the MBUX multi‐
media sy stem displa y.
% Standby mode is automatically deactivated
when the ignition is switched on. Ac
tivating/deactivating standby mode (park‐
ing up theve hicle)
Re quirements:
R The engine is switched off.
Multimedia sy stem:
, © .
Settings .
Fahrzeug (Vehicle) #
Switch Standby mode on or off.
When you activate the function, a prom pt
appears. #
Select Yes.
St andby mode is activated. Driving and driving saf
ety sy stems Driving sy
stems and your responsibility Yo
ur vehicle is equipped with driving sy stems
which assist you in driving, parking and manoeu‐
vring theve hicle. The driving sy stems are aids
and do not relie ve you of your responsibility per‐
ta ining toroad traf fic la w.Pay attention tothe
traf fic conditions at all times and inter vene
when necessa ry. Be aware of the limitations
re ga rding the safe use of these sy stems. 184
Driving and pa rking

#
Remo vethe co ver from the ball head and
st ore it in a safe place.
Make sure that the ball of the ball neck is clean.
Check that it is either greased or dr y (grease
free), depending on the instructions forthe
traile r.
Fo lding the ball neck in #
Pull release switch 2until the ball neck
unloc ks.
The ball neck folds up under there ar
bumper.
Indicator lamp 1flashes. #
Push the ball neck in the direction of the
ar row until it en gage s audibly behind the
bumper.
Indicator lamp 1goes out and the message
on the multifunction display disappears.
Obser vethe information on the displa yson the
instrument clus ter:
R Warning and indicator lamps (→ page548)
R Displ aymessa ges (→ page 498) Coupling up/uncoupling a trailer
Re
quirements:
R the ball neck must be extended and engaged
in the securely loc ked position
Tr ailers with a 7-pin plug can be connec tedto
th eve hicle with thefo llowing adap ters:
R adap ter plug
R adapte r cable
The trailer will be cor rectly de tected bytheve hi‐
cle only if thefo llowing conditions are me t:
R the trailer is connected cor rectly
R the trailer lighting sy stem is in working order
The functions of thefo llowing sy stems are af fec‐
te dby a cor rectly connected traile r:
R Active Lane Keeping Assist
R ESP ®
trailer stabilisation
R Parking Assist PARKTRONIC
R Active Parking Assist
R Blind Spot Assist or Active Blind Spot Assi stCoupling up a trailer
* NO
TEDama getotheve hicle battery due
to full dischar ge Charging
the trailer battery using the po wer
supply of the trailer can damage theve hicle
batter y. #
Do not use theve hicle's po wer supply
to charge the trailer batter y. #
Remo vethe co ver from the ball head and
st ore it in a safe place (→ page101). #
Position the trailer on a le vel sur face behind
th eve hicle and couple it up totheve hicle. 244
Driving and pa rking

Te
lephone menu overview 1
Blue tooth ®
device name of the cur rently
connected mobile phone/the mobile phone
in thefo re ground (two phone mode)
2 Battery status of the connected mobile
phone 3
Signal stre ngth of the mobile phone network
4 Options
5 Device manager
6 Toswitch mobile phones (two phone mode) 7
Numerical pad
8 Contact sear ch 368
MBUX multimedia sy stem

accident site in places
that are dif ficult to
access.
The emer gency call can be made au tomatical ly
( → page 393) or manually (→ page 394). Only
make emer gency calls if you or others are in
need of rescue. Do not make an emer gency call
in theev ent of a breakdown or a similar situa‐
tion.
Yo u can find more information on there gional
av ailability of the Mercedes-Benz emer gency call
sy stem at: http://www.mercedes-benz.com/
connect_ecall.
Message in the media displa y:
The following messages appear in the media dis‐
play:
R SOS NOT READY :th e ignition is not on or
th ere is a malfunction with the emer gency
call sy stem (→ page 282). This does not nec‐
essarily indicate comple tefailure of the
emer gency call sy stem. Emer gency calls call
st ill be transmitted.
The display only refers to theve hicle and
does not take account of theav ailability of mobile phone networ
ksand the Mercedes-
Benz emer gency call centre.
The functional readiness of the emer gency
call sy stem on theve hicle can be seen when
th eSOS NOT READY display disappears once
th e ignition is switched on.
R G: The icon appears in the display during
an active emer gency call.
% Ifth ere is a malfunction in the Mercedes-
Benz emer gency call sy stem (e.g. a fault with
th e speaker, microphone, airbag, SOS but‐
to n), a cor responding message appears in
th e multifunction display of the instrument
clus ter.
Tr iggering an automatic Mercedes-Benz
emer gency call
Re quirements:
R The ignition is switched on.
R The star ter battery is suf ficiently charge d. The Mercedes-Benz emer
gency call sy stem trig‐
ge rs an emer gency call au tomatical lyin thefo l‐
lowing cases:
R After activation of there stra int sy stems such
as airbags or seat belt tensioners af ter an
accident.
R After an auto maticallyinitiated emer gency
st op byActive Emergency Stop Assist.
The emer gency call has been made:
R Avo ice connection is made tothe Mercedes-
Benz emer gency call centre.
R A messa gewith accident data is transmitted
to the Mercedes-Benz emer gency call centre.
The Mercedes-Benz emergency call centre
can transmit theve hicle position data toone
of the public emer gency services call cen‐
tres.
R Under cer tain circums tances da tais also
transmitte d inthevo ice channel tothe
Mercedes-Benz emer gency call centre.
This allo wsmeasu resfo rre scue, reco very or
to wing toa Mercedes-Benz Service Cent reto
be initiated quickl y. MBUX multimedia sy
stem 393