MERCEDES-BENZ A-CLASS SALOON 2021 Owners Manual

The
overhang dimension and fastening points are
va lid for a trailer hitch installed at thefa ctor y.
Ov
Ov er
erhang dimension leng th
hang dimension length Model Model
2 2Ov
Over
erhang dimension
hang dimension
All model s1 013 mmT
T
o
o wing capacity
wing capacity %
The tongue weight is not included in theto w-
ing capacity.
The values forth e trtrailer load, br ailer load, br ak
aked
ed apply
with a minimum start-o. gradeability of 12%.
No
No t f
t for plug-in h
or plug-in h ybr
ybrid:
id: T
T
o
o wing capacity
wing capacity , br
, brak
aked
ed Model
Model
A 180, (manual and
automatic transmis-
sion)
A 180 d, (manual and
automatic transmis-
sion)
1400 kg
A 200 4MATIC
A 200 d 4MATIC
A 220 d 4MATIC
A 250 4MATIC 1800 kg
All other model s1 600 kg T T
o
o wing capacity
wing capacity , unbr
, unbrak
aked
ed Model
Model
A 180, manual trans-
mission
680 kg
A 180, automatic
transmission 690 kg Model Model
A 200, manual trans-
mission
685 kg
A 200, automatic
transmission 695 kg
A 180 d, manual
transmission
A 200 d, manual
transmission 740 kg
A 200 4MATIC
A 250 735 kg
All other model s7 50 kg T T
r
railer load, br
ailer load, br ak
aked (plug-in h
ed (plug-in h ybr
ybrid)
id) Model
Model
A 250
e1 600 kg398 398
Te
ch nical data

T
T
r
railer load, unbr
ailer load, unbr ak
aked (plug-in h
ed (plug-in h ybr
ybrid)
id) Model
Model
A 250
e7 50 kgMaximum t Maximum t
ongue w
ongue weight and load capacity
eight and load capacity *
N
NOOTE
TE Damage caused bythe trailer com-
ing loose If
th eto ngue weight used is too lo w,the trailer
may come loose. #
The tongue weight must not be below
50 kg. #
Use a tongue weight that is as close as
possible tothe maximum permissible
to ngue weight. *
N
NO OTE
TE Damage caused bythe bicycle rack
coming loose When using a bicycle
rack , bo th th e maximal
to ngue weight and the maximal load capacity
should be obser ved. #
Do not exceed the permissible load
capacity. Obser
vethe additional no tes on load capacity
(/ page 268).
T
T ongue w
ongue w eight
eight Model
Model
Maximum t
Maximum tongue
ongue
w
w eight
eight
All model s8 0 kg Load capacity
Load capacity
All models
All models
Maximum load
Maximum load
When attaching the
bicycle rack tothe ball
head Up
to75 kg P
P
er
er missible r
missible r ear axle load (tr
ear axle load (tr ailer oper
ailer operation)
ation) N
No
ot f
t f or plug-in h
or plug-in h ybr
ybrid:
id: T
T
r
r ailer oper
ailer oper ation axle load
ation axle load Model
Model
Axle load
Axle load
A 180, manual trans-
mission
A 200, manual trans-
mission
A 200, automatic
transmission 1010 kg
A 180, automatic
transmission
A 250 1005 kg
A 180 d, automatic
transmission 1020 kg
A 180 d, manual
transmission 1025 kg
A 200 4MATIC 1060 kg
A 200 d 4MATIC 1085 kg
A 220 d 4MATIC 1070 kg Te
ch nical data
399 399

Model
Model
Axle load
Axle load
A 250 4MATIC 1045 kg
All other model s1 035 kgAxle load tr
Axle load tr
ailer oper
ailer operation (plug-in h
ation (plug-in h ybr
ybrid)
id) Model Model
Axle load Axle load
A 250 e1 170 kg400
400
Te
ch nical data

Displa
Displa
y messag
y messag es
es Intr
Intr
oduction
oduction Inf
Inf
or
ormation about displa
mation about displa y messag
y messages
es
Display messages appear on the inst rument dis-
pla y.
Display messages with graphic symbols are sim-
pli/ed in the Owner's Manual and may di.er from
th e symbols on the inst rument displa y.The instru-
ment display sh ows high-priority display messages
in red. Cer tain display message s are accompa-
nied byawa rning tone.
Please act in accordance with the display mes-
sages and follow the additional no tes in the Own-
er's Manual.
Fo r some display messages, symbols will also be
shown:
R Õ Further information
R ¨ Hide displ aymessage
Wi th th e leT-hand Touch Control, you can select
th ere specti vesymbol byswiping tothe leT or
ri ght. Pressing Õdispla ysfur ther information on th
e media displa y.Press the¨ symbol tohide
th e display message.
Yo u can hide lo w-priority display messages by
pressing the back button Porthe leT-hand
To uch Control. The display message s willthen be
stored in the message memor y.
Re ctify the cause of a display message as quickly
as possible.
High-priority display message s cannotbe hidden.
The instrument display will show these display
messages permanently until the cause of the dis-
play message has been recti/ed.
Calling up sav
Calling up sav ed displa ed display messag
y messag es
es
On-board computer:
4 Service 5
1 message
If th ere are no display messages, No messages
will appear on the inst rument displa y. #
Scroll thro ugh the display messages byswip-
ing upwards or down wards on the leT-hand
To uch Control. #
T
To e
o e xit t
xit t he messag
he messag e memory
e memory:
:press the back
button P. Display messages and
warning/indicator lamps
401
401

Occupant safe
Occupant safe
ty
ty Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
6
Restraint sys. malfunction
Consult workshop *T
herestraint system is malfunctioning (/ page 47). &
W WARNING
ARNING Risk of injury due tomalfunctions in there straint system
Co mp onents in there straint system ma y be activated unintentionally or not deploy as intended in an accident. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. Plug-in h
Plug-in h
ybr
ybrid:
id: &
D
DAN
AN GER
GER Risk of fatal injuries due torestraint system malfunctions
Co mp onents in there straint system ma y be activated unintentionally or not deploy as planned in an accident. In
th eeve nt of an accident, the high-voltage on-board electrical system may not be deactivated as intended.
Yo u may su.er an electric shock if youto uch the damaged components of the high-voltage on-board electrical
system. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. #
ATer an accident, switch o. theve hicle immediatel y.402
402
Display message
s andwarning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
6
Front left malfunction Con-
sult workshop (examp le) *T
he cor responding restraint system is malfunctioning (/ page 47). &
W WARNING
ARNING Risk of injury due tomalfunctions in there straint system
Co mp onents in there straint system ma y be activated unintentionally or not deploy as intended in an accident. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. Plug-in h
Plug-in h
ybr
ybrid:
id: &
D
DAN
AN GER
GER Risk of fatal injuries due torestraint system malfunctions
Co mp onents in there straint system ma y be activated unintentionally or not deploy as planned in an accident. In
th eeve nt of an accident, the high-voltage on-board electrical system may not be deactivated as intended.
Yo u may su.er an electric shock if youto uch the damaged components of the high-voltage on-board electrical
system. #
Have there straint system checked and repaired immediately at a quali/ed specialist workshop. #
ATer an accident, switch o. theve hicle immediatel y. Display messages and
warning/indicator lamps
403
403

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
6
Left windowbag malfunc-
tion Consult work-
shop (examp le) *T
he cor responding restraint system is malfunctioning (/ page 47). &
W WARNING
ARNING Risk of injury or fatal injury due toa malfunction in the windowbag
The windowbag might be triggered unintentionally or might not be triggered at all in theev ent of an accident. #
Have the windowbag checked and repaired immediately at a quali/ed specialist workshop. Front-passenger airbag dis-
abled See Owner's Manual
*T
he front passen ger airbag has been disabled even though an adult or a person of adult build is on the front passenger
seat. If additional forc es are applied tothe seat, thewe ight the system de tects may be too lo w. &
W WARNI NG
ARNI NG‑ Risk of injury or evenfata l injury when the front passenger airbag is disabled
If th e front passenger airbag is disabled, It will not be deplo yed in theev ent of an accident and cannot per form its
intended pr otective function.
A person in the front passenger seat could then, forex ample, come into contact with theve hicle interior, especially
if th e person is sitting too close tothe dashboard. #
Beawa reofthe status of the front passenger airbag bo thbefore and during the journe y. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Make sure that no objects are trapped under the front passenger seat. #
Check the status of automatic front passenger airbag actuation (/ page 57).#
If necessar y,consult a quali/ed specialist workshop immediatel y.404
404
Display message
s andwarning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Front-passenger airbag
enabled See Owner's Man-
ual *T
he front passen ger airbag will be enabled while theve hicle is in motion in thefo llowing situations:
R even when a child, a small adult or an object weighing less than the system weight thre shold is located on the front
passenger seat
R even when the front passenger seat is not occupied
The system may de tect objects or forc es that are adding tothewe ight applied tothe seat. &
W WARNING
ARNING Risk of injury or death when using a child restraint system while the front passenger airbag is ena-
bled
If yo u secure a child in a child restraint system on the front passenger seat and the front passenger airbag is ena-
bled, the front passenger airbag can deploy in theev ent of an accident.
The child could be struck bythe airbag. #
Ensure, bo thbefore and during the journe y,that the status of the front passenger airbag is cor rect.
NEVER use a rear wa rdfacing child restraint on a seat pro tected byan ACTIVE AIRBAG in front of it, DEATH or
SERIOUS INJURY tothe CHILD can occur. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Make sure that no objects are trapped under the front passenger seat. #
Check the status of automatic front passenger airbag actuation (/ page 57).#
If necessar y,consult a quali/ed specialist workshop immediatel y. Display messages and
warning/indicator lamps
405
405

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
PRE-SAFE inoperative See
Owner's Manual *
The PRE‑SAFE ®
functions are malfunctioning. #
Consult a quali/ed specialist workshop. K K
e
ey
y Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
Á
Replace key *H
aveth eke yre placed. #
Consult a quali/ed specialist workshop.
Á
Change key batteries *T
hekey battery is dischar ged. #
Replace the battery (/ page 84).406
406
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Á
Key not detected (white dis-
play message) *T
hekey is cur rently unde tected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot for starting with theke y (/ page 160).
Á Key not detected (red dis-
play message) *T
hekey cann otbe de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you switch o. theve hicle:
R You can no longer start theve hicle.
R You cannot centrally lock theve hicle. #
Ensu rethat theke y is in theve hicle.
If th eke y de tection function has a malfunction due toa st rong radio signal source: #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Place theke y in the slot for starting the engine with theke y (/ page 160).
Á Key being initialised Please
wait *T
hevehicle is processing in order to teach in the new key. #
Wait until processing is comple te. Display messages and
warning/indicator lamps
407
407