MERCEDES-BENZ A-CLASS HATCHBACK 2018 Owners Manual

Exit
warning
The exitwa rning is an additional function of
Blind Spot Assist and can warnvehicle occu‐
pants about approaching vehicles when leaving
th eve hicle when stationar y. &
WARNING Risk of accident despi teexit
wa rning
The exitwa rning reacts nei ther tostationary
objects nor tovehicles approaching you at a
great lydif fere nt speed.
As a result, theex itwa rning cannot warn
drivers in these situations. #
Alw ays pay particular attention tothe
traf fic situation when opening the doors
and make sure there is suf ficient clear‐
ance. If
th ere is a vehicle in the monitoring range, this
is indicated in the outside mir ror.If a vehicle
occupant opens the door on the side with the
wa rning, a warning tone sounds and thewa rning
lamp in the outside mir rorst arts toflash. This additional function is on
lyavailable when
Blind Spot Assist is activated and up toa maxi‐
mum of thre e minutes af terth e ignition has
been switched off. The exitwa rning is no longer
av ailable once thewa rning lamp in the outside
mir rorflashes thre e times.
The exitwa rning is only an aid and not a substi‐
tute forth e attention of vehicle occupants. The
re sponsibility for opening and closing the doors
and for leaving theve hicle remains with theve hi‐
cle occupants.
Sy stem limitations
Blind Spot Assist and Active Blind Spot Assi st
may be limi ted in thefo llowing situations:
R the sensors are dirty or co vered
R visibility is poor, e.g. due tofog, heavy rain,
snow or spr ay
R narrow vehicles, e.g. bicycles, are within the
monitoring range
Wa rnings may be issued in er ror when driving
close tocrash ba rriers or similar solid lane bor‐
ders. Warnings may be inter rupte d when driving alongside long
vehicles, forex ample lor ries, for a
prolonged time.
Blind Spot Assist is not operational when reve rse
ge ar is engaged.
Blind Spot Assist is not operational when a
trailer is coupled totheve hicle and the electrical
connection has been cor rectly es tablished.
The exitwa rning may be limited in thefo llowing
situations:
R When the sensors are co veredby adjacent
ve hicles in nar row parking spaces.
R When people approach theve hicle.
R Stationary or slo w-moving objects are not
indica ted.
Fu nction of brake application (Active Blind
Spot Assist)
The brake application function is only available
fo rve hicles with a Driving Assis tance Pack age.
If Ac tive Blind Spot Assi stdetects a risk of a side
impact in the monitoring range, a cou rse-cor‐
re cting brake application is car ried out. This is
designed tohelp youavo id a collision. 238
Driving and parking

The course-cor
recting brake application is availa‐
ble in the speed range between appr oximately
30 km/h and 200 km/h. &
WARNING Risk of accident despi te
brake application of Active Blind Spot
Assi st
A cou rse-co rrecting brake application cann ot
alw ays pr event a collision. #
Alw aysst eer, brake or accelera teyour‐
self, especially if Active Blind Spot
Assi stwa rnsyo u or makes a course-
co rrecting brake application. #
Alw ays maintain a safe dis tance at the
sides. &
WARNING Risk of accident despi te
Ac tive Blind Spot Assi st
Ac tive Blind Spot Assi stdoes not react tothe
fo llowing:
R ifve hicles overtake too closely on the
side, placing them in the blind spot area R
vehicles approaching and overtaking you
at a greatly di fferent speed
As a result, Active Blind Spot Assi stmay nei‐
th er give warnings nor inter vene in su chsit‐
uations. #
Alw ays pay careful attention tothe traf‐
fi c situation and maintain a safe dis‐
ta nce at the side of theve hicle. If a course-cor
recting brake application occu rs,
th ere dwa rning lamp flashes in the outside mir‐
ro r and a warning tone sounds. In addition, dis‐
pl ay 1 indicating the danger of a side collision
appears in the multifunction displa y.In
rare cases, the sy stem may make an inappro‐
priate brake application. This brake application
may be inter rupte d at any time if yousteer
slightly in the opposite direction or accelera te.
Sy stem limitations
Either a course-cor recting brake application
appropria teto the driving situation, or none at
all, may occur in thefo llowing situations:
R Vehicles or obs tacles, e.g. crash ba rriers, are
located on bo thsides of your vehicle.
R Ave hicle approaches too closely on the side.
R You ha veadop ted a sporty driving style with
high cornering speeds.
R You brake or accelerate significantl y.
R A driving sa fety sy stem inter venes, e.g. ESP ®
or Active Brake Assi st.
R ESP ®
is deacti vated.
R A loss of tyre pressure or a defective tyre is
detected.
R You are driving with a trailer and the electri‐
cal connection tothe trailer hitch has been
cor rectly es tablished. Driving and parking
239

Ac
tivating/deactivating Blind Spot Assi stor
Ac tive Blind Spot Assi st
Multimedia sy stem:
, © .
Settings .
Assistance #
Activate or deacti vate Blind Spot Assist .Ac
tive Lane Keeping Assist Fu
nction of Active Lane Keeping Assist Ac
tive Lane Keeping Assist monitors the area in
front of your vehicle bymeans of multifunction
camera 1. It ser vesto protect you against unin‐
te ntional lyleaving your lane. You will be warned
by vibration pulses in thesteering wheel and gui‐ ded
bya course-cor recting brake application
ba ck into your lane.
Yo u are warned byvibration pulses in thesteer‐
ing wheel in thefo llowing circums tances:
R Active Lane Keeping Assist de tects a lane
marking.
R A front wheel drives overth is lane marking.
Yo u will also be guided back into your lane by
means of a course-cor recting brake application
if th efo llowing conditions are me t:
R Active Lane Keeping Assist de tects lane
markings on bo thedges of the lane.
R A front wheel drives over a solid lane mark‐
ing.
Yo u can activate or deactivate theAc tive Lane
Ke eping Assist warning.
Ac tive Lane Keeping Assist can neither reduce
th erisk of an accident if youfa ilto adapt your
driving style nor override the la wsof ph ysics. It
cannot take into account road, weather or traf fic
conditions. Active Lane Keeping Assist is only an
aid. You are responsible for maintaining a safe
dis tance totheve hicle in front, forve hicle speed,
for braking in good time and forst ay ing
in lane.
Ac tive Lane Keeping Assist can bring theve hicle
back into the lane with a lane-cor recting brake
application. In the case of a broken lane marking
being de tected, a brake application will only be
made if a vehicle has been de tected in the adja‐
cent lane. Oncoming tra ffic can be de tected.
Ve hicles with Driving Assistance pac kage:
ov ertaking vehicles and vehicles in adjacent
lanes can also be de tected.
Ac tive Lane Keeping Assist is available in the
speed range between 60 km/h and 200 km/h. 240
Driving and pa rking

If a lane-cor
recting brake application occu rs, dis‐
play 1appears in the multifunction displa y.
Sy stem limitations
No lane-cor recting brake application occu rsin
th efo llowing situations:
R You clear lyand actively steer, brake or accel‐
erate.
R You ha veswitched on the turn signal indica‐
to r (situation-dependent).
R A driving saf ety sy stem inter venes, su chas
ESP ®
,Ac tive Brake Assi stor Active Blind
Spot Assi st.
R You ha veadop ted a sporty driving style with
high cornering speeds or high rates of accel‐
eration.
R When ESP ®
is deactivated.
R When driving with a trailer, the electrical con‐
nection tothe trailer has been cor rectly
es tablished.
R If a loss of tyre pressure or a defective tyre
has been de tected and displ ayed. The sy
stem may be impaired or may not function
in thefo llowing situations:
R Ifth ere is poor visibility, e.g. due toinsuf fi‐
cient illumination of thero ad, if there are
highly variable shade conditions or in rain,
sno w,fog or heavy spr ay.
R Ifth ere is glare, e.g. from oncoming traf fic,
th e sun or reflections.
R Ifth e windscreen in the area of the multi‐
function camera is dirty, or if the camera is
mis ted up, damaged or co vered.
R Ifth ere are no lane markings, or se veral
unclear lane markings are present for one
lane, e.g. around roadwor ks.
R Ifth e lane markings are worn, dark or cov‐
ered.
R Ifth e dis tance totheve hicle in front is too
short and thus the lane markings cann otbe
de tected.
R Ifth e lane markings change quickl y,e.g.
lanes branch off, cross one ano ther or
mer ge. R
Ifth e car riag ewa y is very nar row and wind‐
ing.
Ve hicles with Driving Assistance pac kage:
Ac tive Lane Keeping Assist uses radar sensors
to monitor se veral areas around theve hicle. If
th era dar sensors in there ar bumper are dirty or
co vered with sno w,the sy stem may be impaired
or may not function. If an obs tacle in the lane in
which you are driving has been de tected, no
lane-cor recting brake application occu rs.
Ac tivating/deactivating Active Lane Keeping
Assist
Multimedia sy stem:
, © .
Settings .
Schnellzugriff
(Quick access) .
Active Lane Keeping Assist #
Activate or deacti vate the function.
Sensitivity of Active Lane Keeping Assist
% The availability of thefo llowing function is
countr y-dependent.
Wi th th est andard or sensitive setting, you can
adjust the sensitivity of Active Lane Keeping
Assist. In the sensitive setting, there are addi‐
tional situations in which Active Lane Keeping Driving and parking
241

Assi
stinter venes. The li kelihood of inter vention
is therefore higher.
Setting Active Lane Keeping Assist
Multimedia sy stem:
, © .
Settings .
Assistance .
Act.
Lane Keep. Assist
Setting the sensitivity
% The availability of this function is dependent
on the count ry. #
Select Standard ,Sensitive orOff.
Ac tivating/deactivating the haptic warning #
Select Warning.
Ac tivate or deacti vate the function. Tr
ailer hitch Tr
ailer operation no tesObser
vethefo llowing no tes on theto ngue
we ight:
R do not use a tongue weight that exceeds or
fa lls below the permissible tongue weight R
use a tongue weight as close as possible to
th e maximum tongue weight
Do not exceed thefo llowing values:
R permissible towing capacity
R permissible rear axle load of theto wing vehi‐
cle
R permissible gross mass of theto wing vehicle
R permissible gross mass of the trailer
R maximum permissible speed of the trailer
Ensure thefo llowing before starting a journey:
R the tyre pressure on there ar axle of theto w‐
ing vehicle is set for a maximum load
R the lighting of the connected trailer is opera‐
tional
R vehicles without LED headlamps or MUL‐
TIBEAM LED headlamps: the headlamps
ha ve been set cor rectly
In theeve nt of increased rear axle load, the car/
trailer combination may not exceed a maximum
speed of 100 km/h forre asons concerning the
operating permit. This also applies in countri esin which
the permissible maximum speed for
car/trailer combinations is ab ove100 km/h. Fo
lding the ball neck out/in &
WARNING Risk of accident due tothe
ball neck not being engaged
If th e ball neck is not engaged, the trailer
may come loose. #
Alw ays engage the ball neck as descri‐
bed. &
WARNING Risk of inju ryfrom ball neck
swinging outwards
The ball neck may swing outwards when
unlo cking or when it has not been properly
engaged.
There is a risk of injury within the ball neck's
ra nge of mo vement! #
Unlock the ball neck only when its
ra nge of mo vement is unobstructed. 242
Driving and pa rking

#
Alw ays be sure the ball neck is engaged
when folding in wards. Re
quirements:
R The transmission has been shif tedto posi‐
tion jori.
R The range of mo vement is clear.
R When folding in onl y:trailer cables or
adap ter plugs ha vebeen remo ved. Fo
lding the ball neck out #
Pull release switch 2until the ball neck
unloc ks.
The ball neck folds out from under there ar
bumper.
Indicator lamp 1flashes. #
Pull the ball neck in the direction of the
ar row until it en gage s audibly in a vertical
position.
Indicator lamp 1onthe ball neck release
switch goes out.
If th e ball neck is not securely loc ked in
place, theTrailer coupling Check lock display
message appears on the multifunction dis‐
pla y. Driving and pa
rking 243

#
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

#
Open the soc ket cap. #
Inse rtthe plug with lug 1in groo ve3 on
th e soc ket. #
Turn bayonet coupling 2clockwise as far as
it will go. #
Let the cap engage. #
Secure the cable tothe trailer with cable ties
(only if you are using an adap ter cable). #
Make sure that the cable is alw ays slack for
ease of mo vement during cornering.
A display messa gemay appear on the multifunc‐
tion display even if the trailer has been connec‐
te d cor rectly:
R LEDs ha vebeen ins talled in the trailer light‐
ing sy stem
R The cur rent has fallen below the trailer light‐
ing sy stem's minimum cur rent (50 mA).
% Accessories can be connected tothe perma‐
nent po wer supp lyup to180W, and tothe
po we r supp lythat is swit ched on via the igni‐
tion loc k. Un
coupling a trailer &
WARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer wi than engaged
ine rtia-activated brake, your hand may
become trapped between theve hicle and the
trailer dr awbar. #
Do not uncouple trailers with an
engaged overrun brake. #
Secu rethe trailer against rolling away. #
Disconnect the electrical connection
between theve hicle and the trailer. #
Uncouple the trailer. #
Place the co ver on the ball head. Bicycle
rackfunction &
WARNING Risk of an accident when
using the bicycle rack incor rectly
The bicycle rack may become de tach ed from
th eve hicle in thefo llowing cases:
R the permissible load capacity of the
trailer hitch is exceeded.
R the bicycle rack is used incor rectl y.
R the bicycle rack is secured tothe ball
neck beneath the ball head.
Obser vethefo llowing foryo ur ow n sa fety
and that of other road users: #
always adhere tothe permissible load
capacity of the trailer hitch. #
only use the bicycle rack totranspo rt
bicycles. #
always proper lysecure the bicycle rack
by attaching it tothe ball head. #
only use bicycle rack s appr ovedby
Mercedes-Benz. Driving and parking
245

#
always obser vethe bicycle rack operat‐
ing instructions. *
NO
TEDama geto, or cra cks on, the
trailer hitch due tounsuitable bic ycle
ra ck s or bicycle rack s being used incor‐
re ctly #
use only bicycle rack s appr ovedby
Mercedes-Benz. Depending on
the bicycle rack 's design, up to
th re e bicycles can be transpor ted on the bicycle
ra ck.
When mounted byattaching toball head 1,the
maximum load capacity is 75kg.
The load capacity is calculated from thewe ight
of the bicycle rack and the bicycle rack load. The
vehicle's driving characteristics change
when a bicycle rack isfitted:
R The vehicle is heavier.
R The acceleration ‑and slope-climbing ability
is restricted.
R The braking di stance is lon ger.
This can impair theve hicle's driving characteris‐
tics. Adapt your driving style according ly. Drive
carefully and maintain a sa fedis tance.
When using a bicycle rack , set the tyre pressure
fo r maximum load on there ar axle of theve hicle.
Fu rther information on the tyre pressure can be
fo und in the tyre pressure table (→ page 460).
Note s on loading
The lar gerth e dis tance between the load's
cent reof gr avity and the ball head, the greater
th e load on the trailer hitch.
Therefore, obser vethefo llowing no tes:
R mount heavy bicycles as close totheve hicle
as possible 246
Driving and pa rking

R
always distribute the load on the bicycle rack
as eve nly as possible across theve hicle's
longitudinal axis
Mercedes-Benz recommends removing all
de tach able parts from bicycles, e.g. bask ets,
ch ild seats or rech arge able bat teries, before
loading them onto the bicycle rack . This
impr ovesth e wind resis tance and centre of gr av‐
ity of the bicycle rack.
Alw ays secure the bicycles topreve ntthem from
moving around and check they are secured at
re gular inter vals.
Do not use tarp aulins or other co vers. The driv‐
ing characteristics and rear view may be
impaired. In addition, the wind resis tance and
load on the trailer hitch increase. Distribution of
the load on the bicycle rack
1 Vertical dis tance between centre of gr avity
and ball head
2 Horizon tal dis tance between centre of gr av‐
ity and ball head
3 The centre of gr avity is on theve hicle's
centre axis Obser
vethefo llowing information when
loading the bicycle rack: Nu
mber
of bicy‐
cles To
tal
we ight
of bicy‐
cle rack
and load Max. dis‐
tance
1 1Max. dis‐
tance
2 2
3U pto
75 kg 420 mm 300 mm Ve
hicle towing instructions
The vehicle is not suitable forth e use of tow- bar
sy stems, which are used forflat towing or ding hy
to wing, forex ample. Attach ing and using tow- bar
sy stems can lead todamage on theve hicle.
When towing a vehicle with tow- bar sy stems,
safe, dynamic driving behaviour of theto wing
ve hicle and theve hicle being towe d is not guar‐
anteed. The vehicle-trailer combination can
swer vefrom side toside. Comply with the per‐
mitted towing me thods (→ page449) and the
instructions forto wing with bo thaxles on the
ground (→ page 450). Driving and parking
247