2018 MERCEDES-BENZ A-CLASS HATCHBACK airbag

Display messages
Possible causes/consequences and M
MSolutions
Restraint sys. malfunction
Consult workshop &
WARNING Risk of inju ryor fata l injury due toa malfunction in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or
might not be triggered at all in theeve nt of an accident. This may af fect the seat belt tensioner or airbag, for
ex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. De
tection of a restra int sy stem fault:
R there stra int sy stem warning lamp 6does not light up when the ignition is switched on.
R there stra int sy stem warning lamp 6lights up continuously or repeatedly during a journe y. #
Consult a qualified specialist workshop immediatel y.
6
Front left malfunction Con-
sult workshop (Example) *T
he cor responding restra int sy stem is malfunctioning (→ page31). &
WARNING Risk of inju ryor fata l injury due toa malfunction in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or
might not be triggered at all in theev ent of an accident. This may af fect the seat belt tensioner or airbag, for
ex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. De
tection of a restra int sy stem malfunction:
R there stra int sy stem warning lamp 6does not light up when the ignition is switched on.
R there stra int sy stem warning lamp 6lights up continuously or repeatedly during a journe y.508
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Consult a qualified specialist workshop immediatel y.
6
Left windowbag malfunc-
tion Consult work-
shop (Example) *T
he cor responding windowbag is malfunctioning (→ page31). &
WARNING Risk of inju ryor fata l injury due toa malfunction in the window airbag
The window airbag might be triggered unintentionally or might not be triggered at all in theeve nt of an accident
wi th high deceleration. #
Have the window airbag checked and repaired immediately at a qualified specialist workshop. #
Consult a qualified specialist workshop immediatel y.
Front-passenger airbag
enabled See Owner's Man-
ual *T
he front passenger airbag is enabled while theve hicle is in motion:
R even when a child, a small adult or an object weighing less than the sy stem weight thre shold is located on the
front passenger seat
R even when the front passenger seat is not occupied
The sy stem may de tect objects or forc es that are adding tothewe ight applied tothe seat. &
WARNING Risk of inju ryor fata l injury when using a child restra int sy stem while the front passenger airbag
is enabled
If yo u secure a child in a child restra int sy stem on the front passenger seat and the front passenger airbag is
enabled, the front passenger airbag can deploy in theev ent of an accident.
The child could be stru ck bythe airbag. Display messages and
warning/indicator lamps 509

Display messages
Possible causes/consequences and M
MSolutions #
Ensure, bo thbefore and during the journe y,that thest atus of the front passenger airbag is cor rect.
NEVER use a rear wa rdfacing child restra int on a seat pr otected byan ACTIVE FRONT AIRB AGin front of it;
DE ATH or SERIOUS INJU RYtotheCH ILD can occur. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. #
Check thest atus of the automatic front passenger airbag shutoff (→ page41). #
If necessar y,consult a qualified specialist workshop immediatel y.
Front-passenger airbag dis-
abled See Owner's Manual *T
he front passenger airbag has been deactivated although an adult or a person with an adult stature is on the front
passenger seat. If additional forc es are applied tothe seat, thewe ight the sy stem de tects may be too lo w. &
WARNING ‑ Risk of inju ryor eve nfa ta l injury when the front passenger airbag is disabled
If th e front passenger airbag is disabled, It will not be deplo yed in theeve nt of an accident and cannot pe rform
its intended pr otective function.
A person in the front passenger seat could then, forex ample, come into con tact wi th theve hicle interior, espe‐
cially if the person is sitting too close tothe dashboard. #
Beaware of thest atus of the front passenger airbag bo thbefore and during the journe y. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. #
Check thest atus of the automatic front passenger airbag shutoff (→ page41). #
If necessar y,consult a qualified specialist workshop immediatel y.51 0
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
å ESP ®
OFF warning lamp The
yellow ESP ®
OFF warning lamp is lit while the engine is running.
ESP ®
is deacti vated. &
WARNING Risk of skidding when driving wi thESP ®
deacti vated
If ESP ®
is deactivated, ESP ®
cannot car ryout vehicle stabilisation. The availability of fur ther driving saf ety sy stems
is also limited. #
Drive on carefull y. #
Only deactivate ESP ®
for as long as the situation requ ires.
If ESP ®
cannot be activated, ESP ®
is malfunctioning. #
Have ESP ®
ch ecked immediately at a qualified specialist workshop. #
Obser vethe no tes on deactivating ESP ®
(→ page 186).
6 Re stra int sy stem warning
lamp The
redre stra int sy stem warning lamp is lit while the engine is running.
The restra int sy stem is faulty (→ page 30). &
WARNING Risk of inju ryor fata l injury due toa malfunction in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or might not
be triggered at all in theeve nt of an accident. This may af fect the seat belt tensioner or airbag, forex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. Display messages and
warning/indicator lamps 553

Ad
vanced sound sy stem
Ac tivating/deactivating au tomatic
vo lume adjustment .............................. 41 8
Ad justing the balance/fader ................4 18
Ad justing treble, mid-range and bass
settings ................................................ 41 8
Calling up the sound menu .................. 417
Information .......................................... 417
Af ter-sales service centre
see ASS YST PLUS
Air conditioning menu Calling up ............................................ 14 3
Air conditioning sy stem
see Climate control
Air distribution Setting ................................................ .141
Setting (multimedia sy stem) ................1 43
Air inl et
see Air-water duct
Air pressure see Tyre pressure
Air vents ................................................... 14 9
Ad justing (front) .................................. 14 9Ad
justing (rear) .................................... 15 0
Air vents
see Air vents
Ai r-re circulation mode ............................ 14 4
Air-water duct .......................................... 427
Ke eping free ........................................4 27
Airbag ........................................................ .37
Ac tivation .............................................. 31
Fr ont airbag (driver, front passenger) ....37
Ins tallation locations ............................ .37
Knee airbag ........................................... 37
Overview ............................................... 37
PA SSENGER AIR BAG indicator lamp .... .41
Pr otection ..............................................38
Re duced pr otection ...............................39
Side impact airbag ................................. 37
Wi ndow airbag ....................................... 37
Airflow Setting ................................................ .141
Alarm see Panic alarm
Alarm sy stem
see ATA (anti-theft alarm sy stem) Alternative
route
see Route
Ambiance light Setting (mutlimedia sy stem) ................1 30
Android Auto ............................................ 386
Connecting a mobile phone ................. 386
Ending ................................................. 387
Information .......................................... 386
Overview ............................................. 386
Sound settings .................................... 387
Tr ans ferred vehicle data ......................3 87
Animals Pets in theve hicle ................................. 63
Answering e-mails see In Car Of fice
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft ala rmsystem
see ATA (anti-theft alarm sy stem)
Anti-theft pr otection
Ad ditional door lock .............................. 69 Index
563

Immobiliser ...........................................85
Anti-theft pr otection
see ATA (anti-theft alarm sy stem)
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay™ ....................................... 384
Connecting an iPhone ®
....................... 385
Ending .................................................3 86
No tes .................................................. 385
Overview ............................................. 384
Sound settings .................................... 386
Tr ans ferred vehicle data ......................3 87
Asht ray
Using ....................................................1 14
Assistance sy stems
see Driving saf ety sy stem
Assistant display Menu (on-board computer) .................. 254
ASS YST PLUS ............................................ 419
Battery disconnection periods ............. 420 Displaying
the service due date ........... 419
Fu nction/no tes .................................... 419
Re gular maintenance work .................. 419
Special service requ irements .............. .419
ATA (anti-theft ala rmsystem) .................. 85
Deactivating the alarm .......................... 85
Fu nction ................................................ 85
Fu nction of interior pr otection ............... 86
Priming/deactivating interior pr otec‐
tion ........................................................ 87
Priming/deactivating tow- aw ay pro‐
te ction ................................................... 86
To w- aw ay protection function ................86
AT TENTION ASSI ST.......................... 231, 233
Fu nction .............................................. 231
Setting ................................................. 233
Sy stem limitations ...............................2 31
At tention assistant
see ATTENTION ASSIST
Au thorised workshop
see Qualified specialist workshop
Au tomatic distance control
see Active Dis tance Assi stDISTRONIC
Au tomatic driving lights .........................12 3Au
tomatic engine start (ECO start/
sto p function) .......................................... 15 8
Au tomatic engine stop (ECO start/
sto p function) .......................................... 15 8
Au tomatic front passen ger front air‐
bag deacti vation sy stem
see Automatic front passenger front
airbag shutoff
Au tomatic front passen ger front air‐
bag shu toff ........................................... 40, 41
Fu nction of the automatic front
passenger front airbag deactivation
sy stem ................................................... 40
PA SSENGER AIR BAG indicator lamp .... .41
Au tomatic mir rorfo lding function
Ac tivating/deactivating ...................... .140
Au tomatic seat adjustment
Setting ................................................... 94
Au tomatic transmission
DIRECT SELECT le ver ........................... 16 4
Drive prog ram display ......................... .161
Drive prog rams ................................... .160
DY NA MIC SELECT switch .................... 16 0
Engaging drive position ....................... 16 6564
Index

Tr
ailer hit ch......................................... 432
Wa shing byhand ................................. 428
Wheels/rims ....................................... 432
Wi ndo ws .............................................. 432
Wi per blades .......................................4 32
Carpet (Care) .......................................... .434
Changing bulbs ........................................ 131
Dipped beam ....................................... 13 3
Fitting/removing co ver (front wheel
ar ch ) .................................................... 13 3
Main beam ...........................................1 33
No tes ................................................... 131
Overview ............................................. 13 2
Re versing lights .................................. .133
Tu rn signal lights (rear) ........................ 13 3
Changing gears ........................................ 16 6
Manually ..............................................1 66
Changing hub caps .................................. 473
Changing the lights
Driving abroad (symm etrical dipped
beam) .................................................. 12 2
Cha rging
Bat tery (vehicle) .................................. 448
USB port ..............................................1 18Chassis
Damping characteristics ...................... 214
DY NA MIC BODY CONTROL .................. 214
Child saf ety lock
Re ar door .............................................. 62
Re ar side wind ows................................. 63
Child seat Attach ing (no tes) ................................... 54
Fr ont passenger seat (no tes) ................. 52
Fr ont passenger seat (rear ward-
fa cing/for ward-facing) .......................... 53
Fr ont passenger seat (without auto‐
matic airbag shutoff) ............................. 53
ISOFIX/i-Size (fitting) ............................49
No tes on the safe transpor tation of
ch ildren ................................................ .46
Re commended child restra int sys‐
te ms ...................................................... 60
Seats suita blefor belt-secu redch ild
re stra int sy stems ................................... 55
Seats suitable for i‑Size child
re stra int sy stems ................................... 59
Seats suitable for ISOFIX child
re stra int sy stems ................................... 57
To pTe ther ..............................................51 Child seat
see i-Size child seat securing sy stem
see ISOFIX child seat securing sy stem
Children Notes on safe transpor tation ................. 46
Chock ....................................................... .471
St orage location ................................... 471
Chock see Chock
Cigar ette lighter
Fr ont centre console ............................ 11 4
City lighting .............................................. 12 6
Cleaning see Care
Climate control ........................................ 141
Ac tivating/deactivating the A/C
function (cont rol panel) ...................... .142
Ac tivating/deactivating the A/C
function (multimedia sy stem) .............. 14 3
Ac tivating/deactivating the synchro‐
nisation function (cont rol panel) .......... 14 3 Index
567

Dep
ress clutch fully tostart engine .....5 38
Drive sy stem Malfunction Stop
Switch engine off ................................ 525
Drive sy stem Malfunction Visit work‐
shop ....................................................5 25
5Engine oil le vel cannot be
measured ............................................ 520
4Engine oil le velRe duce oil le vel...5 23
4Engine oil le velSt op vehicle
Switch engine off ................................ 523
4Engine oil pressure Stop Switch
off engine ............................................ 524
6Fr ont left malfunction Consult
wo rkshop (Example) ............................5 08
Fr ont-passenger airbag disabled See
Owner's Manual ................................... 51 0
Fr ont-passenger airbag enabled See
Owner's Manual ..................................5 09
!inoperative See Owner's Man‐
ual ....................................................... 506 ÷inoperative See Owner's Man‐
ual
....................................................... 506
Tinoperative See Owner's Man‐
ual ....................................................... 503
GInope rative ................................... 512
b Intellige nt Light Sy stem inoper‐
ative ....................................................5 45
ÂKe y not de tected (white dis‐
pl ay messa ge).....................................5 33
ÂKe y not de tected (red displ ay
messa ge).............................................5 33
bLeft dipped beam (Example) .......545
6 Left windowbag malfunction
Consult workshop (Example) ............... 509
Limiter inoperative ...............................5 19
Limiter passive ..................................... 519
b Malfunction See Owner's Man‐
ual .......................................................5 46
ðMaximum speed exceeded ..........5 19 Mercedes me connect Services limi‐
te
d See Owner's Manual ......................511
N permanently active Risk of vehicle
ro lling .................................................. 539
çOff .............................................. .517
ë Off............................................... 51 5
Only select Park (P) when vehicle is
st ationary ............................................ 541
ï Operation only possible in
transmission position N ....................... 536
ïOperation only possible in
transmission position P ....................... 536
!Pa rking brake See Owner's
Manual ................................................ 500
Pa rking lock malfunct. Apply parking
brake .................................................. .538
ÂPlace theke y in the mar ked
space See Owner's Manual ................. 534
PRE-SAFE inoperative See Owner's
Manual .................................................5 11572
Index