brake sensor MERCEDES-BENZ A-CLASS HATCHBACK 2018 User Guide

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

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

Before pu
rchasing and using non-appr oved
accesso ries, visit a qualified specialist workshop
and enquire about:
R Suitability
R Legal stipulations
R Factory recommendations &
WARNING Risk of accident wi thhigh
per form ance tyres
The special tyre tread in combination with
th e optimised tyre compound, means that
th erisk of skidding or hydroplaning on wet
ro ads is inc reased.
In addition, the tyre grip is greatly reduced at
a low outside temp erature and tyre running
te mp erature. #
Switch on the ESP ®
and adapt your
driving style accordingly. #
Use M+S tyres at outside temp eratures
of less than 50 °F. Obse
rveth efo llowing when selecting, fitting and
re placing tyres:
R Countr y-specific requirements for tyre
appro valth at define a specific tyre type for
yo ur vehicle.
Fu rthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can
be highly beneficial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOEx tended
tyres) and the same make.
R Only fit wheels of the same size on one axle
(left and right).
It is only permissible tofit a di fferent wheel
size in theeve nt of a flat tyre in order to
drive tothe specialist workshop.
R Only fit tyres of the cor rect size onto the
wheels.
R Do not make any modifications tothe brake
sy stem, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral operating pe rmit. R
Vehicles with a tyre pressure monitoring
sy stem: allfitted wheels mu stbe equipped
with functioning sensors forth e tyre pres‐
sure monitoring sy stem.
R Attemp eratures below 7 °C, use winter tyres
or all-season tyres mar ked M+S for all
wheels.
Wi nter tyres bearing thei snowflake
symbol in addition tothe M+S marking pro‐
vide the best possible grip in wintry road
conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres fitted.
If th is is below theve hicle's maximum speed,
th is must be indicated byan appropriate
label in the driver's field of vision.
R Run in new tyres at moderate speeds forthe
fi rs t10 0 km.
R Replace the tyres af ter six years at the latest,
re ga rdless of wear. 47 0
Wheels and tyres

New/replaced brakepads/brake
discs .................................................... 15 6
Ru nning-in no tes ..................................1 56
Braking assi stance
see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions .............. 16
To w- starting ........................................ 453
To wing away ........................................ 450
Tr ansporting theve hicle ......................4 52
Wheel change ...................................... 472
Breakdown see Flat tyre
Burmes ter®
sur round sound sy stem .....4 16
Ad justing the balance/fader ................4 17
Ad justing the sound focus .................... 417
Ad justing treble, mid-range and bass
settings ................................................ 416
Au tomatic volume adjustment ............ .416
Calling up the sound menu .................. 416
Information .......................................... 416
Selecting the sound profile .................. 417
Buttons Steering wheel .....................................2 49 C
Call list Deleting ............................................... 379
Making a call ....................................... 378
Overview ............................................. 378
Selecting options for suggestions ........ 378
Calling up the sound menu
Adva nced sound sy stem ......................4 17
Burmes ter®
sur round sound sy stem ....4 16
Calls .......................................................... 373
Ac cepting ............................................ 373
Ac tivating functions du ring a call ......... 374
Calls with se veral participants ............ .374
Declining ............................................. 373
Ending a call ....................................... .373
Incoming call during an existing call .... 374
Making ................................................ 373
Camera see 360° Camera
see Reversing camera
Car key
see Key Car
wash
see Care
Car wash (care) ....................................... 427
Car-to-X-Communication Displaying hazard warnings ................ .354
Overview ............................................. 353
Sending hazard warnings .................... 354
Care .......................................................... 434
Air-water duct ...................................... 427
Car wash ............................................. 427
Carpet .................................................4 34
Decorative foil .................................... .430
Displ ay................................................ 434
Exterior lighting ................................... 432
High-pressure cleaner ......................... 427
Matt finish ........................................... 429
Pa int wo rk ............................................ 429
Plastic trim .......................................... 434
Re alwo od/trim elements ...................4 34
Re versing camera/360° Camera ........ 432
Ro of lining ...........................................4 34
Seat belt .............................................. 434
Seat co ver ........................................... 434
Sensors ............................................... 432
Ta ilpipes .............................................. 432 566
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

hTy
repress. monitor cur rently
una vailable .......................................... 531
hTy repress. monitor inoperative
No wheel sensors ................................ 531
hTy repress. monitor inoperative ...531
Ty re pressure Check tyres ...................528
Ty re(s) ove rheated ...............................5 32
dVe hicle is operational Switch
off the ignition before exiting .............. 537
hWa rning tyre defect .....................529
hWheel sensor(s) missing .............. 531
Wi thout changing gear, consult work‐
shop ....................................................5 38
Display on the windscreen
see Head-up display
Distance control see Active Dis tance Assi stDISTRONIC
Di stance recorder
see Trip dis tance
DI STRO NIC
see Active Dis tance Assi stDISTRONIC Door
Additional door lock .............................. 69
Child saf ety lock (rear door) .................. 62
Locking (emer gency key) ...................... .73
Opening (from the inside) ......................70
Un locking (emer gency key) .................... 73
Un locking (from the inside) ...................70
Door cont rol panel .................................... .14
Dr aw bar
see Tow- bar sy stem
Drinks holder see Cup holder
Drive Away Assist .................................... 230
Drive position Engaging .............................................. 16 6
Drive prog ram display ............................. 161
Drive prog rams
see DYNA MIC SELECT
Driver's seat see Seat
Driving abroad Symmetrical dipped beam ...................1 22Driving lights
see Automatic driving lights
Driving saf ety sy stem ............................ .184
ABS (Anti-lo ckBraking Sy stem) ........... 185
Ac tive Brake Assi st.............................. 19 0
Ad aptive brake lights .......................... .196
BA S (Brake Assi stSystem) .................. 186
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 19 0
ESP ®
Crosswind Assi st........................ 189
ESP ®
trailer stabilisation .................... .189
Overview ............................................. 185
Ra dar sensors .....................................1 85
Re sponsibility ...................................... 184
ST EER CONTROL ................................. 19 0
Driving sy stem
DY NA MIC BODY CONTROL .................. 214
Driving sy stem
see 360° Camera
see Active Blind Spot Assi st
see Active Dis tance Assi stDISTRONIC
see Active Emergency Stop Assist
see Active Lane Change Assi st
see Active Lane Keeping Assist 574
Index