2018 MERCEDES-BENZ A-CLASS HATCHBACK lights

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Consult a qualified specialist workshop.
÷ ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
At least one wheel and tyre assembly has reached its traction limit (→ page186). #
Adapt your driving style to suit thero ad and weather conditions.
÷ ESP ®
wa rning lamp lights
up The
yellow ESP ®
wa rning lamp is lit while the engine is running.
ESP ®
is malfunctioning
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems are
switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop. 552
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Drive on carefull y. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop immediatel y.Seat belt
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
7 Seat belt warning lamp
lights up The
red seat belt warning lamp will light up once the engine has star ted.
In addition, a warning tone may sound.
The seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt (→ page 35).
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit.
7 Seat belt warning lamp
fl ashes The
red seat belt warning lamp flashes and an intermit tent wa rning tone sounds.
The driver or front passenger has not fastened their seat belt while theve hicle is in motion. #
Fasten your seat belt(→ page 35).
There are objects on the front passenger seat. #
Remo vethe objects from the front passenger seat. 554
Display messages and warning/indicator lamps

Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function The
red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Ac tive Brake Assi st . Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ð Po we rst eering sy stem
wa rning lamp The
red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer-assis tedsteering or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 555

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (→ page 425). #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C. Ty
res Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp lights
up The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring sy stem has de tected tyre pressure loss in at least one of the tyres. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. Display messages and
warning/indicator lamps 559

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

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

Engaging neutral ..................................
16 5
Engaging pa rkposition ........................ 16 5
Engaging reve rsege ar ........................ .165
Kickdown ............................................. 167
Manual gear changing ........................ .166
St eering wheel gearshift paddles ........ .166
Tr ansmission position display .............. 16 4
Tr ansmission positions ........................ 16 4
Au tomatic transmission (problem)
see Transmission (problem)
Axle load Perm issible .......................................... 483
Tr ailer operation .................................. 497 B
Bag hook .................................................. 109
Baidu CarLife Trans ferred vehicle data ......................3 87
Ball ne ck
Fo lding out/in .................................... .242
BA S (Brake Assist Sy stem) .................... .186
Battery Cha rging (Remo teOnline) .................... 15 5Ke
y ........................................................ 67
Re mo tecontrol (s tationary heater) ...... 14 8
Battery see Battery (vehicle)
Battery (vehicle) ...................................... 449
Charging .............................................. 448
No tes .................................................. 444
No tes (s tarting assis tance and
ch arging) ............................................ .446
Re placing ............................................ 449
St arting assis tance .............................. 448
Belt see Seat belt
Bic ycle rack
Tr ailer operation .................................. 24 5
Blind Spot Assi st..................................... 237
Ac tivating/deactivating ...................... .240
Fu nction .............................................. 237
Sy stem limitations ...............................2 37
Blo wer
see Climate control
BlueTEC see AdBlue ® Blue
tooth ®
................................................ 313
Information .......................................... 313
Setting up an Internet connection ....... 397
Switching on/off ................................. 313
Boot lid see Tailgate
Brake Assist Sy stem
see BAS (Brake Assi stSystem)
Brake fluid Notes .................................................. 492
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion) ..................................................... 19 0
Brakes ABS (Anti-lock Braking Sy stem) ........... 185
Ac tive Brake Assi st.............................. 19 0
Ad aptive brake lights .......................... .196
BA S (Brake Assi stSystem) .................. 186
Driving tips .......................................... 15 6
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 19 0
HOLD function .................................... .212
Limited braking ef fect (salt-trea ted
ro ads) .................................................. 15 6 Index
565

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