lock MERCEDES-BENZ A-CLASS SALOON 2018 Service Manual

#
Unscr ew and close disposable hose 1and
Ad Blue ®
re fill canis ter2 inreve rse order. #
Replace theAd Blue ®
fuel filler cap and turn it
clockwise. #
Close the fuel filler flap. #
Swit chon the ignition for at least 60 sec‐
onds.
% Ifth eve hicle could not be star ted as the
Ad Blue ®
tan kwa s em pty, it can take up to
60 seconds forth ere fill to be de tected. #
Start theve hicle.
% Avoid storing AdBlue ®
re fill con tainers per‐
manently in theve hicle. Pa
rking Pa
rking theve hicle &
WARNING Risk of accident and inju ry
caused byan insuf ficiently secu redve hi‐
cle rolling away.
If th eve hicle is not securely par ked suf fi‐
ciently, it can rollaw ay in an uncont rolled
wa yev en at a slight downhill gradient. #
Ensure that the par kedve hicle is alw ays
properly secured against rolling away as
fo llo ws:
R on uphill or downhill gradients, turn
the front wheels so that theve hicle
ro lls towa rdsth eke rb if it starts
moving.
R apply the parking brake.
R vehicles with automatic transmis‐
sion: shift the transmission toposi‐
tion j.
R vehicles with manual transmission:
engage firs t1 orreve rsege ar k. &
WARNING Risk offire caused byhot
ex haust sy stem parts
Flammable material such as lea ves, grass or
twigs may ignite if they come into contact
wi th hot parts of theex haust sy stem or
ex haust gasflow. #
Park theve hicle so that no flammable
material can come into con tact wi thhot
ve hicle components. #
In particular, do not park on dry grass‐
land or har vested grain fields. &
WARNING Risk of accident and inju ry
due tochildren and animals left unat ten‐
ded in theve hicle
If yo u lea vechildren and animals unat tended
in theve hicle, they may be able toset the
ve hicle in motion, forex ample by:
R releasing the parking brake 18 0
Driving and pa rking

R
shifting the automatic transmission out of
park position jor shifting manual trans‐
mission into idle position.
R starting the engine.
In addition, they may operate vehicle equip‐
ment and become trapped. #
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. *
NO
TEDama getotheve hicle due toit
ro lling away #
Alw ays secure theve hicle against roll‐
ing away. #
Bring theve hicle toast andstill byapplying
th e brake pedal. #
On uphill or downhill gradients, turn the front
wheels so that theve hicle rolls towa rdsthe
ke rb if it starts moving. #
App lythe electric parking brake. #
Vehicles with manual transmission:
engage firs t1 orreve rsege ar k. #
Vehicles with automatic transmission:
engage transmission position jin a station‐
ary vehicle with the brake pedal applied
(/ page170). #
Switch off the engine and the ignition by
pressing the1 button. #
Release the service brake slowl y. #
Get out of theve hicle and lock it.
% When you park theve hicle, you can still
opera tethe side windo wsand the panorama
sliding sunroof for appro ximately five
minutes if the driver's door is closed. Garage door opener
Prog
ramming buttons for the garage door
opener &
DANG ER Risk of fata l injuries due to
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and can lead topoisoning. Driving and parking
181

Electric pa
rking brake Electric parking brake function (app
lying
automatically) &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If yo u lea vechildren unat tended in theve hi‐
cle, they may be able toset theve hicle 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.
In addition, they may operate vehicle equip‐
ment and become trapped. #
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. Ve
hicles with manual transmission:
When theve hicle comes toast andstill, the elec‐
tric parking brake is applied if one of thefo llow‐
ing conditions is fulfilled:
R The engine is switched off.
R The driver's door is opened.
The elect ric pa rking brake is also applied while
th eve hicle is kept stationary bythe HOLD func‐
tion if one of thefo llowing conditions is fulfilled:
R The engine is switched off.
R The seat belt tongue is not inser ted in the
seat belt buckle of the driver's seat and the
driver's door is opened.
R There is a sy stem malfunction.
R The po wer supp lyis insuf ficient.
R The vehicle is stationary for a lengt hyperiod.
When the electric parking brake is applied, the
re d! indicator lamp appears in the instru‐
ment clus ter. If
th e electric parking brake is not applied when
th e driver's door is opened, theRisk of vehicle
rolling away Apply parking brake See Owner's
Manual message appears.
The electric parking brake is not automatically
applied if the engine is switched off bythe ECO
st art/ stop function.
% Toprev ent application: pull the handle of the
electric parking brake.
Ve hicles with automatic transmission:
The electric parking brake is applied if the trans‐
mission is in position jand one of thefo llow‐
ing conditions is fulfilled:
R The engine is switched off.
R The seat belt tongue is not inser ted in the
seat belt buckle of the driver's seat and the
driver's door is opened.
% Toprev ent application: pull the handle of the
electric parking brake.
In thefo llowing situations, the electric parking
brake is also applied:
R Active Dis tance Assi stDISTRONIC is bringing
th eve hicle toast andstill. 18 6
Driving and pa rking

Fu
nction of thera dar senso rs Some driving and driving sa
fety sy stems use
ra dar sensors tomonitor the area in front of,
behind or next totheve hicle (depending on the
ve hicle's equipment).
Depending on theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind the Mercedes star. Keep these
parts free of dirt, ice and slush
(/ page442). The sensors must not be cov‐
ered, forex ample bycycle rack s, overhanging
loads, sticke rs,fo il or foils toprotect against
st one chipping. In theeve nt of dama getothe
bumpers or radiator grille, or following a collision
impacting the bumpers or radiator grille, ha ve
th e function of thera dar sensors checked at a
qu alified specialist workshop. The driver assis‐
ta nce sy stem may no longer workproper ly. Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R 360° Camera (/ page 226)
R ABS (A nti-lock Braking System)
(/ page191)
R Active Dis tance Assi stDISTRONIC
(/ page 205)
R Adaptive brake lights (/ page 201)
R Active Brake Assi st (/ page195)
R Active Lane Keeping Assist (/ page245)
R ATTENTION ASSIST (/ page 237)
R BAS (Bra keAssist System) (/ page191)
R Hill Start Assist (/ page217)
R Suspension with ada ptive damping adjust‐
ment (/ page219)
R EBD ( Electronic Brakeforce Distribution)
(/ page195) R
ESP ®
(Electronic Stability Program)
(/ page191)
R Speed Limit Assist (/ page 238)
R Active Speed Limit Assi st (/ page 209)
R HOLD function (/ page217)
R STEER CONTROL (/ page 195)
R Active Steering Assist (/ page211)
R Speed limiter (/ page 202)
R Active Parking Assist (/ page 230)
R Parking Assist PARKTRONIC
(/ page 220)
R Reversing camera (/ page 223)
R Cruise control (/ page 201)
R Function of Blind Spot Assi stand Active Blind
Spot Assi stwith exitwa rning
(/ page242)
R Traf fic Sign Assi st (/ page240) 19 0
Driving and pa rking

Fu
nction of ABS (Anti-lock Braking Sy stem) ABS
regulates the brake pressure in critical driv‐
ing situations:
R During braking, e.g. at full brake application
or insuf ficient tyre traction, the wheels are
pr eve nted from lo cking.
R Vehicle steerability while braking is ensured.
If ABS inter venes when braking, you will feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road
conditions and can ser veas a reminder totake
ex tra care while driving.
Sy stem limitations
R ABS is active from speeds of appr ox.
8 km/h.
R ABS may be impai red or may not function if a
malfunction has occur red and theye l‐
low ! ABSwarning lamp lights up contin‐
uously in the instrument clus ter af terthe
engine is star ted. Fu
nction of BAS (Brake Assist Sy stem) &
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assi stSys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an emergency braking situation is
increased. #
Dep ress the brake pedal with full force
in emer gency braking situations. ABS
pr eve nts the wheels from locking. BA
S suppo rts yo ur eme rgency braking situation
with additional brake forc e.
If yo u depress the brake pedal quickl y,BA S is
acti vated:
R BAS au tomatical lyboosts the brake pres‐
sure.
R BAS can sho rten the braking dis tance.
R ABS pr events the wheels from locking.
The brakes will function as usual once you
re lease the brake pedal. BAS is deactivated. Fu
nctions of ESP ®
(Electronic Stability Pro‐
gr am) &
WARNING Risk of skidding if ESP ®
is
malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ry
out vehicle stabilisation. In addition, other
driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified spe‐
cialist workshop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ry
out vehicle stabilisation. #
ESP ®
should on lybe deactivated in the
fo llowing situations. Driving and parking
191

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 es
in 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. #
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 Only when folding in: The trailer cables or
adap ter plugs are remo ved. 248
Driving and pa rking

Fo
lding the ball neck out #
Pull release switch 2until the ball neck
unloc ks.
The ball neck will fold out from under the
re ar bumper.
Indicator lamp 1will flash. #
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 will go out.
If th e ball neck is not securely loc ked in
place, theTrailer coupling Check lock display
message will appear on the multifunction dis‐
pla y. #
Remo vethe co ver from the ball head and
st ore it in a safe place.
Make sure that the ball on 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 will fold up under there ar
bumper.
Indicator lamp 1will flash. #
Push the ball neck in the direction of the
ar row until it en gage s audibly behind the
bumper.
Indicator lamp 1will go out and the mes‐
sage on the multifunction display will disap‐
pear.
Obser vethe information on the displa yson the
instrument clus ter:
R Warning and indicator lamps
(/ page 560)
R Display messages (/ page 509) Driving and parking
249

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 (/ page109). #
Position the trailer on a le vel sur face behind
th eve hicle and couple it up totheve hicle. #
Open the soc ket cap. #
Inse rtthe plug with lug 1in groo ve3 on
th e soc ket. #
Turn the ba yonet coupling 2clockwise as
fa r 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. 250
Driving and parking

#
Toselect the menu item or entr y:swipe
up, down, left or right. #
Press Touch Control 2. #
Toenter a character: enter acharacter
using theke yboard. #
Tomo vethe digital map: swipe in any
direction.
Setting the sensitivity for the Touch Control
Multimedia sy stem:
4 © 5
Settings 5
System
5 Controls 5
Touch Control sensitivity #
Select Fast,Medium orSlow .
Setting acoustic operating feedba ckfor the
To uch Control
Multimedia sy stem:
4 © 5
Settings 5
System
5 Controls
The function is suppor tedby the selection in a
list. #
Select Acoustic operating feedback. #
Set Normal, LoudorOff.
If th e function is activated you will hear a
clicking sound when sc rolling in a list. When
th e beginning or end of the list is reached
yo u will hear ano ther clicking sound. To
uchscreen Operating
theto uchscreen
Ta pping #
Toselect a menu item or entr y:tap on a
symbol or an ent ry. #
Toincrease the map scale: tap twice
qu ickly with one finger. #
Toreduce the map scale: tap with two fin‐
ge rs. #
Toenter characters with th eke ypad: tap
on a button.
Single-finger swipe #
Tonavigate in menus: swipe up, down, left
or right. #
Tomo vethe digital map: swipe in any
direction. #
Touse handwriting toenter characters:
write thech aracter with one finger on the
to uchsc reen.
Tw o-finger swipe #
Tozoom in and out of the map: movetwo
fi ngers toget her or apart. #
Toenlar georreduce the size of a section
of a website: movetwo fingers toget her or
apart. #
Toturn the map: turn anti-clockwise or
clockwise using two fingers.
To uching, holding and moving #
Tomo vethe map: touch theto uchsc reen
and mo veyour finger in any di rection. #
Toset thevo lume on a scale: touch the
to uchsc reen and mo vethefinger tothe left
or right. 292
MBUX multimedia sy stem

originates from ano
ther vehicle, this is recog‐
nised du ring da tareading. #
Con firm the prom pt.
The files are impor ted. The multimedia sy stem is
re star ted once the data has been impor ted.
% Current vehicle settings can be edited af ter
th e import.
Exporting
If PIN pr otection is activated, your PIN is reques‐
te d. #
Ente rth efo ur-digit PIN. #
Select a data storage medium.
A prom ptappears asking whe ther youre ally
wish tocar ryout theex port. #
Confirm the prom pt.
The data is expor ted. The data export may
ta ke several minutes.
% After successful export, the data is sa ved in
th e "MyMercedesBac kup" directory which
can be found on thestorage medium. Ac
tivating/deactivating PIN pr otection Re
quirements for unlocking the PIN:
R The reis an Internet connection.
R A Mercedes me account exists at http://
www.me rcedes.me.
R An individual user profile is active
(/ page 298).
Multimedia sy stem:
4 © 5
Settings 5
System
5 PIN protection
Setting the PIN #
Select Set PIN. #
Enter a four-digit PIN. #
Enterth efo ur-digit PIN again.
If bo thPINs match, PIN pr otection is active.
Changing the PIN #
Select Change settings. #
Enterth e cur rent PIN. #
Select Change PIN . #
Set a new PIN. Ac
tivating PIN pr otection for data export #
Select Protect data export .
Ac tivate or deacti vate the function.
Un blocking the PIN via the Mercedes me por‐
tal
If th e PIN has been entered incor rectly three
times, the PIN will be bloc ked. You can ha ve a
single-use password sent to you via the
Mercedes me connect online por talto reset the
PIN pr otection. #
Select Unblock PIN. #
Ente rth e single-use password.
PIN pr otection is reset, and you can set a
new PIN. Software upda
te Information on software upda
tes
A software upda teconsi sts of thre esteps:
R Downloading or copying of the data requ ired
fo r ins tallation
R Installation of the update MBUX multimedia sy
stem 325