2021 MERCEDES-BENZ A-CLASS HATCHBACK warning light

Symbols
Symbols
.......................................................... 5 5A
A
t a glance
t a glance ...................................................... 6 6
Co ckpit ........................................................... 6
Cockpit (Plug-in-Hybrid) ................................ .10
Indicator and warning lamps (standard) ......... 12
Indicator and warning lamps (widescreen
cockpit) ........................................................ 14
Overhead control panel ................................. 16
Door operating unit and seat adjustment .......18
Emer gencies and breakdowns ....................... 20 Digit Digit
al Owner's Manual
al Owner's Manual ................................. 22 22
Calling up the Digital Owner's Manual ............ 22 Gener
Gener
al not
al notes
es............................................... 24 24
Pr otection of the environment ....................... 24
Ta ke -back of end-of-life vehicles .................... 24
Mercedes-Benz Genuine Parts ........................ 25
Owner's Manual ............................................ 26
Mercedes me App ......................................... 26
Operating saf ety ............................................ 27 Declarations of con
form ity and no tes on
driving in di.erent countries .......................... 29
Diagnostics connection ................................. 39
Quali/ed specialist workshop ........................ 40
Ve hicle registration ....................................... 40
Cor rect use of theve hicle ............................. 40
Information on the REACH regulation ............. 41
No tesfo r persons with electronic medical
aids .............................................................. 41
Implied warranty .......................................... .42
QR code forre scue card .............................. .42
Data storage .................................................42
Copyright ...................................................... 45 Occupant safe Occupant safe
ty
ty ............................................ 46 46
Re straint system .......................................... .46
Seat belts .................................................... .48
Airbags ......................................................... 53
PRE-SAFE ®
system ........................................ 60
Au tomatic measures aTer an accident ........... 61
Safely transporting children in theve hicle ...... 61
No tes on pets in theve hicle .......................... 80 Opening and closing
Opening and closing
...................................... 82 82
Ke y .............................................................. .82
Doors ............................................................ 86
Load compartment ........................................ 90
Side windo ws................................................ 92
Sliding sunroof .............................................. 95
Anti-theT pr otection ...................................... 99 Seats and sto Seats and sto
wing
wing....................................... 102 102
No tes on the cor rect driver's seat position .. 102
Seats ......................................................... .103
St eering wheel ............................................ 112
Easy entry and exitfeature .......................... 113
Memory function ......................................... 114
St ow age areas ............................................ 116
Soc kets ....................................................... 128
Wi reless charging of the mobile phone
and connection with theex terior aerial ........ 130
Fi tting/removing the 0oor mats ................... 132 Light and sight
Light and sight
............................................ 134 134
Exterior lighting ........................................... 134
Interior lighting ............................................ 142 2
2
Contents

1
Steering wheel gearshiT paddles →
185
2 Combination switch →
136
3 Instrument displ ay →
278
4 DIRECT SELECT le ver →
183
5 ü Start/stop but ton →
166
è ECO start/s top function →
173
6 Media display →
285
7 Climate control systems →
154
8 £ Hazard warning light system →
137
9 PASSENGER AIR BAG indicator la mps→
57
A Glovecompartment →
119
B Stow age compartment →
119
C Cup holder
D 8 Controller forvo lume and switching
sound on/o. →
285
Ü Switches the MBUX multimedia system
on/o. →
285 E
z Calls up navigation →
287
F | Calls up radio or media →
287
G % Calls up thete lephone →
287
H ß Calls up favo urites →
287
I y Calls up vehicle functions →
287
J c Active Parking Assist →
266
K DYNAMIC SELECT switch →
179
L Touchpad →
287
M Control panel forth e MBUX multimedia system →
279
N Adjusts the steering wheel →
112
O ý Switches the steering wheel heater
on/o. →
113
P Control panel:
On-board computer →
279
Cruise control or variable limi ter →
230
I Active Distance Assist DISTRONIC →
234
Q Diagnostics connection →
39 At
a glance – Cockpit
7
7

1
! ABS →
488
2 #! Turn signal lights →
136
3 h Tyre pressure monitoring system →
490
4 # Electrical fault →
481
5 L Distance warning →
487
6 J Brakes (yellow) →
485
7 J Brakes (red) →
485
8 ! Electric parking brake (yellow) →
485
9 ! Electric parking brake (red) →
485
A % Diesel engine: preglow
B ; Engine diagnostics →
481
C R Rear fog light →
135 D
K High beam →
136
L Low beam →
134
T Standing lights →
134
E å ESP®
OFF →
488
÷ ESP®
→
488
F 6 Restraint system →
477
G Fuel le vel →
278
H æ Reser vefuel wi thfuel /ller 0ap location
indicator →
481
I Ù Powe r steering →
480
J ü Seat belt →
477
K ï Trailer hitch →
480 At
a glance – Indicator and warning lamps (standard)
13
13

1
#! Turn signal lights →
136
2 ï Trailer hitch →
480
3 6 Restraint system →
477
4 å ESP®
OFF →
488
÷ ESP®
→
488
5 R Rear fog light →
135
6 K High beam →
136
L Low beam →
134
T Standing lights →
134
7 ÿ Coolant temp erature →
481
8 Coolant temp erature display →
278
9 ! Electric parking brake (yellow) →
485
A J Brakes (yellow) →
485
B # Electrical fault →
481 C
L Distance warning →
487
D ! ABS →
488
E Ù Powe r steering →
480
F h Tyre pressure monitoring system →
490
G % Diesel engine: preglow
H æ Reser vefuel wi thfuel /ller 0ap location
indicator →
481
I Fuel le vel →
278
J ! Electric parking brake (red) →
485
K ü Seat belt →
477
L J Brakes (red) →
485
M ; Engine diagnostics →
481
N ä Indicator lamp inoperative At
a glance – Indicator and warning lamps (widescreen cockpit)
15
15

1
Safetyve sts →
346
2 Fire extinguisher →
347
3 ; me button →
311
G SOS button →
311
4 £ Hazard warning light system →
137
5 Stow age compartment for customer literature
6 Starting assis tance →
357
7 Tocheck and top up operating 0uids →
393
8 Tow- starting or towing away →
360
9 Flat tyre →
348 A
B-pillar with:
QR code for accessing there scue card →
42
B Tow- starting or towing away →
360
C Warning triangle →
346
D TIREFIT kit →
350
E Firs t-aid kit (soT sided) →
347
F Fuel /ller 0ap with:
information label on fuel type →
188
information label on tyre pressure →
370
QR code for accessing there scue card →
42 At
a glance – Emer gencies and breakdowns
21 21

R
R
es
estr traint syst
aint syst em functionality
em functionality When
theve hicle is switched on, a self-test is per-
fo rm ed, during which the6 restraint system
wa rning lamp lights up. It goes out no later than a
few seconds aTer theve hicle is star ted. The com-
ponents of there straint system are then func-
tional. Malfunctioning r
Malfunctioning r
es
estr traint syst
aint syst em
em A malfunction has occur
red in there straint sys-
te m if:
R the6 restraint system warning lamp does
not light up when theve hicle is switched on
R the6 restraint system warning lamp lights
up continuously or repeatedly during a journey
All v
All v ehicles, ex
ehicles, excep
cep t plug-in h
t plug-in h ybr
ybrid:
id: &
W
WARNING
ARNING Risk of injury due tomalfunc-
tions in there straint system
Co mp onents in there straint system ma y be
acti vated unintentionally or not deploy as
intended in an accident. #
Have there straint system checked and
re paired immediately at a quali/ed spe-
cialist workshop. Plug-in h
Plug-in h
ybr
ybrid:
id: &
D
DAN
AN GER
GER Risk of fatal injuries due to
re straint system malfunctions
Co mp onents in there straint system ma y be
acti vated unintentionally or not deploy as plan-
ned in an accident. In theeve nt of an acci-
dent, the high-voltage on-board electrical sys-
te m may not be deactivated as intended.
Yo u may su.er an electric shock if youto uch
th e damaged components of the high-voltage
on-board electrical system. #
Have there straint system checked and
re paired immediately at a quali/ed spe-
cialist workshop. #
ATer an accident, switch o. theve hicle
immediatel y. F
F
unction of t
unction of t he r
he res
estrtraint syst
aint syst em in an accident
em in an accident How
there straint system works is de term ined by
th e se verity of the impact de tected and the type
of accident anticipated:
R Frontal impact
R Rear impact
R Side impact
R Only for cer tain countries: rollo ver
The activation thre sholds forth e components of
th ere straint system are de term ined based on the
ev aluation of the sensor values measured at vari-
ous points in theve hicle. This process is pre-e mp-
tive in nature. The triggering/deployment of the
components of there straint system must take
place in good time at the start of the collision.
Fa ctors which can only be seen and measured
aTer a collision has occur red do not play a deci-
sive role in the deployment of an airbag. Nor do
th ey prov ide an indication of airbag deployment.
The vehicle may be deformed signi/cantly without
an airbag being deplo yed. This is the case if only
parts which are relatively easily deformed are
a.ec tedand thera te of vehicle deceleration is Occupant saf
ety
47
47

bag. The
PASSENGER AIR BAG OFF indicator la mp
may be lit continuously or be o..
If th ePA SSENGER AIR BAG OFF indicator la mp
and the6 restraint system warning lamp light
up simultaneousl y,the front passenger seat may
not be used. Also in this case, do not /t a child
re straint system tothe front passenger seat. Ha ve
th e automatic front passenger airbag shuto.
ch ecked and repaired immediately at a quali/ed
specialist workshop.
S S t
tatus display
atus display
If th e front passenger seat is occupied, ensure,
bo th before and during the journe y,that the sta-
tus of the front passenger airbag is cor rect forthe
cur rent situation.
ATer
ATer /tting
/tting a r
a rearw
earw ar
ard-f
d-f acing c
acing c hild r
hild res
estrtraint sy
aint sy s-
s-
t
t em t
em t o t
o the fr
he fr ont passeng
ont passeng er seat
er seat::PA SSENGER AIR
BAG OFF must be lit continuous ly. &
W
WARNI NG
ARNI NGRisk of injury or dea thwhen
using a rear wa rd-facing child restraint sys-
te m while the front passenger airbag is
enabled
If yo u secure a child in a rear wa rd-facing child
re straint system on the front passenger seat
and thePA SSENGER AIR BAG OFF indicator
la mp is o., the front passenger airbag can
deploy in theev ent of an accident.
The child could be struck bythe airbag. #
Always ensu rethat the front passenger
airbag is disabled. The PASSENGER AIR
BAG OFF indicator la mpmust be lit. #
NEVER use a rear wa rd-facing child
re straint system on a seat wi than ENA-
BLED FRONT AIR BAG. This can result in
th e DEATH of or SERIOUS INJURY tothe
CHILD. When /tting a
child restraint system tothe front
passenger seat, obser vetheve hicle-speci/c infor-
mation (/ page 76).
Depending on thech ild restraint system and the
stature of thech ild, thePA SSENGER AIR BAG OFF indicator la
mpmay be o.. In this case, do not /t
th ere ar wa rd-facing child restraint system tothe
front passenger seat.
Instead, /t there ar wa rd-facing child restraint sys-
te m to a suitable rear seat.
ATer
ATer /tting /tting a f
a forw
orw ar
ard-f
d-f acing c
acing c hild r
hild res
estr
traint sy
aint sy s-
s-
t
t em t
em t o t
o the fr
he fr ont passeng
ont passeng er seat
er seat::depending on the
ch ild restraint system and the stature of thech ild,
PA SSENGER AIR BAG OFF may be lit continuous ly
or be o.. Alw ays obser vethefo llowing informa-
tion. &
W
WARNING
ARNING Risk of injury or death due to
incor rect positioning of thefo rw ard-facing
ch ild restraint system
If yo u secure a child in a forw ard-facing child
re straint system on the front passenger seat
th at is positioned too close tothe cockpit, in
th eeve nt of an accident, thech ild could:
R come into contact with parts of theve hi-
cle's interior if thePA SSENGER AIR BAG
OFF indicator la mpis lit, forex ample
R be st ruck bythe airbag if thePA SSENGER
AIR BAG OFF indicator la mpis o. 58
58
Occupant saf
ety

Be su
retoalso obser vethefo llowing fur ther rela-
te d subjects:
R Child restraint system on the front passenger
seat (/ page 76)
R Suitable positioning of thech ild restraint sys-
te m (/ page 66) PRE-S
PRE-S
AFE
AFE®
®
syst
syst em
em F
F
unction of PRE-S
unction of PRE-S AFE
AFE®
®
(anticipat
(anticipat or
ory occupant
y occupant
pr ot
pr otection)
ection) PRE-SAFE
®
is able todetect cer tain critical driv-
ing situations and implement pre-em ptive meas-
ures toprotect theve hicle occupants.
PRE-SAFE ®
can implement thefo llowing meas-
ures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Closing the side windo ws.
R V
V ehicles wit
ehicles wit h sliding sunr
h sliding sunr oof:
oof:closing the slid-
ing sunroof. R
V
V ehicles wit
ehicles wit h memor
h memory function:
y function: movingthe
front passenger seat toa more favo urable seat
position.
R PRE-SAFE ®
Sound: pr ovided that the multime-
dia system is switched on, generating a brief
noise signal tostimula tethe innate pr otective
mechanism of a person's hearing.
* NO
NO TE
TEDamage caused byobjects in the
fo ot we ll or behind the seat The automatic adjustment of
the seat position
may result in damage tothe seat and/or the
object. #
Stow objects in a suitable place. R
R
e
ev
ver
er sing t
sing t he PRE-S
he PRE-S AFE
AFE®
®
syst
syst em measur
em measur es
es If an accident did not occur,
the pre-em ptive
measures that we re ta ken are reve rsed.
Yo u will need toper form certain settings yourself. #
Ifth e seat belt pre-tensioning is not reduced,
mo vethe seat backrest back slightl y.
The locking mechanism releases. F
F
unction of PRE-S
unction of PRE-S AFE
AFE®
®
PL
PL US (anticipat
US (anticipat or
ory occu-
y occu-
pant pr ot
pant pr otection plus)
ection plus) PRE-SAFE
®
PLUS can de tect cer tain impacts, par-
ticular lyan imminent rear impact, and take pre-
em ptive measures toprotect theve hicle occu-
pants. These measures cann otnecessarily pre-
ve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thefo llowing
measures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Activating there ar hazard warning lights at a
higher 0ashing frequency.
R Increasing brake pressure when theve hicle is
stationar y.This brake application is cancelled
automatically when theve hicle pulls away.
If an accident did not occur, the pre-em ptive
measures that we re ta ken are reve rsed.
Syst
Syst em limits
em limits
The system will not initiate any action in thefo l-
lowing situations:
R when reve rsing 60
60
Occupant saf
ety