2018 MERCEDES-BENZ A-CLASS HATCHBACK high beam

Changing
the front bulbs (vehicles with halo‐
ge n headla mps) Fi
tting/ removing the co ver on the front
wheel ar ch
Re quirements:
R The lighting sy stem is switched off.
R The appropriate front wheel is turned
in wa rds. #
Toremo ve:turn co ver1 tothe left and
re mo veit from the wheel ar chliner. #
Toinstall: insert co ver1 into the wheel
ar ch liner and turn it totheright until it
engages.
Re placing bulbs in the halo gen headla mp
Re quirements:
R Dipped beam: a H7 55 W light bulb is availa‐
ble.
R Highbeam: a H7 55 W light bulb is available. 1
Dipped beam housing co ver
2 Main beam housing co ver #
Switch the lighting sy stem off. #
Remo vethe co ver in the front wheel ar ch
( → page 133). #
Turn there leva nt housing co ver anti-clock‐
wise and remo veit. #
Turn the soc ket anti-clo ckwise and remo veit. #
Pull the bulb out of the soc ket. #
Inse rtthe new bulb into the soc ket su chthat
th e entire base of the bulb is resting on the
bottom of the soc ket. #
Inse rtthe soc ket and turn it clo ckwise. #
Press on the housing co ver and turn it clock‐
wise. #
Replace the co ver in the front wheel ar ch
( → page 133). Changing
there ar bulbs (vehicles with halo‐
ge n headla mps) Re
placing the tail lamp bulbs #
Due totheir locations, ha vethe bulbs forthe
turn signal light and reve rsing light changed
at a qualified specialist workshop. Light and sight
13 3

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

Overview of displa
yson the multifunction
display 1
Outside temp erature
2 Time
3 Digital speedome ter
4 Displ aysection
5 Drive program
6 Transmission position %
Ve
hicles with standard instrument dis‐
pla y:the position of the displa ysdiffers from
th ose shown here.
Fu rther displa yson the multifunction display:
Z Gearshift
recommendation (→ page 167)
u Active Parking Assist activated
(→ page 227)
é Parking Assist PARKTRONIC deacti vated
( → page 217)
¯ Cruise
control (→ page 196)
È Limi
ter (→ page 197)
ç Active Dis tance Assi stDISTRONIC
(→ page 200)
æ Ac
tive Brake Assi st(→ page 196)
è Active Steering Assis t(→ page 206)
à Ac
tive Lane Keeping Assist(→ page240)
è ECO
start/ stop function(→ page158)
ë HOLD function(→
page212)
_ Ad
aptive Highbeam Assist(→ page127)
Ad aptive Highbeam Assist
Plus(→ page128) ð
Ma
ximum pe rmissible speed exceeded
(for cer tain countries only)
Ve hicles with Speed Limit Assis t:de tected
instructions and traf fic signs (→ page 233).
Ve hicles with Traf fic Sign Assis t:de tected
instructions and traf fic signs (→ page 235). Ad
justing the in stru ment lighting Instrument Displ
ayand on-board computer 253

Display messages
Possible causes/consequences and M
MSolutions
Switch on headlamps
b
Automatic driving lights
inoperative *T
he light sensor is faulty. #
Consult a qualified specialist workshop.
Adaptive Highbeam Assist
inoperative *A
daptive Highbeam Assist is malfunctioning. #
Consult a qualified specialist workshop.
Adaptive Highbeam Assist
currently unavailable See
Owner's Manual *A
daptive Highbeam Assist is temp orarily una vailable.
The sy stem limits ha vebeen reached (→ page127). #
Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again. The Adaptive Highbeam
Assist available again display message appears.
Adaptive Highbeam Assist
Plus inoperative *A
daptive Highbeam Assist Plus is faulty. #
Consult a qualified specialist workshop.
Adaptive Highbeam Assist
Plus currently unavailable
See Owner's Manual *A
daptive Highbeam Assist Plus is temp orarily una vailable.
The sy stem limits ha vebeen reached (→ page128). #
Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again. The Adaptive Highbeam
Assist Plus available again display message appears. Display messages and
warning/indicator lamps 547

Wa
rning and indicator lamps Overview of
warning and indicator lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some warning and indi‐
cator lamps may brief lylight up or flash. This
behaviour is non-critical. These warning and indi‐
cator lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y.
Instrument display (standard) Instrument display in
the widescreen cockpit Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown.
Wa rning and indicator lamps:
L Low beam(→
page122)
T St
anding lights (→ page122)
K High beam(→
page124)
#! Tu
rn signal lights(→ page124)
R Re
ar fog light(→ page122)
6 Re
stra int sy stem(→ page549)
ü Seat belt not
fastened(→ page 554) J
Brakes (yellow)(
→page 549)
J Brakes (red)(
→page 549)
! Electric pa
rking brake (yellow)
(→ page 549)
! Electric pa
rking brake (red)
(→ page 549)
! ABS malfunctioning(→
page 549)
÷ ESP®
(→ page 549)
å ESP®
OFF( →page 549)
L Distance warning(→ page 555)
Ð Po
we r-assis tedsteering malfunction‐
ing( →page 555)
; Engine diagnosis (→
page 557)
% Preglow
# Elect
rical fault (→ page 557)
æ Fu
elreser vewith fuel filler flap loca‐
tion indicator (→ page 557)
? Ve
hicles with widescreen cock pit:
coolant too hot/cold (→ page 557)
h Ty
re pressure monitoring sy stem
(→ page 559) 548
Displaymessa ges and warning/indicator lamps

Fu
nction .............................................. 24 0
Sensitivity (function/no tes) ................. 241
Setting the sensitivity .......................... 24 2
Sy stem limitations ...............................2 40
Tr ailer operation .................................. 24 0
Ac tive Parking Assist .............................. 225
Cross Traf fic Alert ................................ 231
Drive AwayAssi st................................ 230
Exiting a pa rking space ...................... .228
Fu nction .............................................. 225
Manoeuvring assi stance ...................... 231
Pa rking ................................................ 227
Sy stem limitations ...............................2 25
Ac tive Se rvice Sy stem PLUS
AS SYST PLUS ....................................... 419
Ac tive Speed Limit Assi st....................... 204
Display ................................................ 204
Fu nction .............................................. 204
Ac tive Steering Assist ............................ .206
Ac tivating/deactivating ...................... .208
Ac tive Emergency Stop Assist .............. 210
Ac tive Lane Change Assi st.................. 208
Displa ysinthe Instrument Display .......2 10
Fu nction .............................................. 206 Sy
stem limitations ...............................2 06
Ad aptive brake lights ..............................19 6
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist
Fu nction .............................................. 127
Switching on/off ................................. 12 8
Ad aptive Highbeam Assist Plus
Fu nction .............................................. 12 8
Switching on/off ................................. 12 9
Ad Blue ®
.................................................... 489
Ad ditives .............................................4 89
Capacity .............................................. 490
Consu mption ....................................... 490
Fill le vel .............................................. .254
No tes ................................................... 172
Purity ................................................... 489
Ra nge .................................................. 254
To pping up ...........................................1 73
Ad ditional door lo ck.................................. 69 Ad
diti ves.................................................. 490
Ad Blue ................................................. 489
Engine oil ............................................ 490
Fu el ..................................................... 487
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing the balance/ fader
Adva nced sound sy stem ......................4 18
Burmes ter®
sur round sound sy stem ....4 17
Ad justing the headlamp range ............... 12 3
Ad justing the sound focus
Burmes ter®
sur round sound sy stem ....4 17
Ad justing treble, mid- range and bass
settings
Adva nced sound sy stem ......................4 18
Burmes ter®
sur round sound sy stem ....4 16 562
Index

Ad
aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........547
Ad aptive Highbeam Assist inopera‐
tive ...................................................... 547
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .547
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .547
¯ AdBlue sy stem fault Engine
st art not possible ................................ 527
¯Ad Blue system fault Perf.
re duced in XXX miles See Owner's
Manual ................................................ 527
¯ AdBlue sy stem fault See Own‐
er's Manual ........................................ .527
4 Add 1 litre engine oil when next
re fuelling ............................................. 525
Anti-theft ala rmsystem Malfunction ...545 App
lybrake todeselect Park (P)
position ...............................................5 38
Apply brake toselect R ........................ 537
ÀAT TENTION ASSIST inoperative ...51 5
À ATTENTION ASSIS T:Take a
break! .................................................. 514
b Automatic driving lights inoper‐
ative .................................................... 547
Au xilia rybattery malfunction .............. 535
_Before starting the engine, turn
th esteering wheel. .............................. 542
Blind Spot Assi stcur rently una vaila‐
ble See Owner's Manual ......................512
Blind Spot Assi stinope rative ............... 513
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...5 15
Brake immediately ............................... 499
ÂChange key bat teries .................. 534
JCheck brake fluid le vel................ 504 ïCheck trailer hitch lock (white
display message) ................................ .539
hChe cktyre(s) ............................... 529
!Clean the fuel filter .................... .520
Clutch overheated Avoid pulling away
fo r XX:XX mins ................................... .536
?Coolant Stop vehicle Switch
engine off ............................................ 520
Cruise contro l and Limiter inope ra‐
tive ....................................................... 519
Cruise cont rol inope rative .................... 519
Cruise cont rol off ................................ .518
Cur rently una vailable Camera view
re stricted ............................................. 517
Cur rently una vailable Radar sensors
dirty .....................................................5 16
! currently una vailable See Own‐
er's Manual ........................................ .505
÷cur rently una vailable See Own‐
er's Manual ........................................ .499 Index
571

Fu
se box in the load compartment ...... 457
No tes ................................................... 454 G
Garage door opener Cleari ngthe memory ........................... 17 9
Opening or closing the door ................1 79
Programming buttons .......................... 176
Ra dio equipment appr oval numbers .... 17 9
Re solving problems ............................. 178
Synchronising thero lling code ............ .177
Gearshift recommendation .............164,167
Genera l operating permit number
(EU) .......................................................... .483
Genuine parts ............................................ 21
Glide mode ............................................... 167
Global sear ch
Fu nction .............................................. 300
Overview ............................................. 300
Glo vebox
Locking/unlocking .............................. 102 H
Handbrake see Electric parking brake
Handling characteristics (unusual) ....... 458
Hazard warning lights ............................ .125
Head restra int .......................................... .92
Fr ont (adjusting mechanically) .............. 92
Re ar (adjusting) .................................... .93
Re ar (fitting/removing) ........................ .93
Head-up display ....................................... 259
Ad justing display elements (on-board
compu ter) ............................................ 259
Ad justing the brightness (on-board
computer) ............................................ 259
Fu nction .............................................. 260
Menu (on-board compu ter) .................. 259
Operating the memory function ..........1 00
Setting the position (on-board com‐
puter) .................................................. 259
Headla mpflasher ................................... .124
Heating see Climate control High beam
Adaptive Highbeam Assist .................. .127
Ad aptive Highbeam Assist Plus .......... .128
Switching on/off ................................. 124
High-pressure cleaner (care) .................. 427
Hill Start Assist ........................................ 212
HOLD function ......................................... 212
Fu nction/no tes .................................... 212
Switching on/off ................................. 212
Home screen (media display) Overview ............................................. 282
Hotspot Setting up (Wi-Fi) ................................. 315 I
i-Size child seat securing sy stem ............ 48
Fitting .................................................... 49
No tes ..................................................... 48
Seats suitable for attaching ................... 59
Identification plate Engine ................................................. 483
Vehicle ................................................ 483 578
Index