2021 MERCEDES-BENZ A-CLASS SALOON fuel pressure

Changing bulbs (only
forve hicles with hal-
ogen headlamps) ......................................... 139
Wi ndsc reen wipers and windscreen
wa sher system ............................................ 141
Mir rors ........................................................ 144 Climat
Climat
e contr
e control ol........................................... 147 147
Overview of climate control systems ............ 147
Operating the climate control system .......... 148 Dr
Dr
iving and par
iving and par king
king..................................... 156 156
Driving ........................................................1 56
DY NAMIC SELECT switch ........................... .172
Manual transmission ................................... 175
Au tomatic transmission .............................. .177
Fu nction of the 4MATIC ...............................1 81
Re fuelling .................................................... 182
Charging the high-voltage battery (plug-in
hy brid) ........................................................ 188
Pa rking .......................................................2 05
Driving and driving saf ety sy stems ............... 213
Tr ailer hitch ................................................ .264
Bicycle rack function ................................... 268
Ve hicle towing instructions .......................... 270 Ins
Ins
tr
trument displa
ument displa y and on-boar
y and on-boar d com-
d com-
put
put er
er........................................................... 271 271
No tes on the inst rument display and on-
board computer .......................................... 271
Overview of instrument display .................... 272
Overview of buttons on the steering wheel ... 273
Operating the on-board computer ................2 73
Fu nction of the po wer me ter (plug-in
hy brid) ........................................................ 275
Fu nction of the electric mo tor po wer
av ailability displ ay(plug-in hybrid) ................ 275
Displaying the po wer me ter (plug-in
hy brid) ........................................................ 276
Overview of displa ysinthe inst rument
display ........................................................ 276
Head-up display .......................................... 276 MBUX multimedia syst MBUX multimedia syst
em
em........................... .279
279
Overview and operation ............................... 279
System settings .......................................... 288
Plug-in hybrid settings ................................ .292
Na vigation .................................................. .293
Te lephone ................................................... 302
Mercedes me app ....................................... 305 Mercedes-Benz emer
gency call system ....... 314
Ra dio & media ............................................ .318
Sound settings ............................................ 323 Maint Maint
enance and car
enance and car e
e................................. 324 324
ASS YST PLUS service inter val display .......... 324
Engine compartment ................................... 325
Cleaning and care ....................................... 331 Br Br
eakdo
eakdo wn assist
wn assist ance
ance................................. 340 340
Emer gency .................................................. 340
Flat tyre ...................................................... 342
Battery (vehicle) .......................................... 349
To w- starting or towing away ........................ 354
Electrical fuses ............................................ 360 Wheels and tyr Wheels and tyr
es
es......................................... 363 363
No tes on noise or unusual handling char-
acteristics ................................................... 363
No tes on regula rly inspecting wheels and
tyres .......................................................... .363
No tes on snow chains ................................. 363
Ty re pressure .............................................. 364 Contents
3 3

1
! ABS →
480
2 #! Turn signal lights →
132
3 h Tyre pressure monitoring system →
482
4 # Electrical fault →
473
5 L Distance warning →
479
6 J Brakes (yellow) →
477
7 J Brakes (red) →
477
8 ! Electric parking brake (yellow) →
477
9 ! Electric parking brake (red) →
477
A % Diesel engine: preglow
B ; Engine diagnostics →
473
C R Rear fog light →
131 D
K High beam →
132
L Low beam →
130
T Standing lights →
130
E å ESP®
OFF →
480
÷ ESP®
→
480
F 6 Restraint system →
469
G Fuel le vel →
272
H æ Reser vefuel wi thfuel /ller 0ap location
indicator →
473
I Ù Powe r steering →
472
J ü Seat belt →
469
K ï Trailer hitch →
472 At
a glance – Indicator and warning lamps (standard)
13
13

1
#! Turn signal lights →
132
2 ï Trailer hitch →
472
3 6 Restraint system →
469
4 å ESP®
OFF →
480
÷ ESP®
→
480
5 R Rear fog light →
131
6 K High beam →
132
L Low beam →
130
T Standing lights →
130
7 ÿ Coolant temp erature →
473
8 Coolant temp erature display →
272
9 ! Electric parking brake (yellow) →
477
A J Brakes (yellow) →
477
B # Electrical fault →
473 C
L Distance warning →
479
D ! ABS →
480
E Ù Powe r steering →
472
F h Tyre pressure monitoring system →
482
G % Diesel engine: preglow
H æ Reser vefuel wi thfuel /ller 0ap location
indicator →
473
I Fuel le vel →
272
J ! Electric parking brake (red) →
477
K ü Seat belt →
469
L J Brakes (red) →
477
M ; Engine diagnostics →
473
N ä Indicator lamp inoperative At
a glance – Indicator and warning lamps (widescreen cockpit)
15
15

1
Safetyve sts →
340
2 Fire extinguisher →
341
3 ; me button →
305
G SOS button →
305
4 £ Hazard warning light system →
133
5 Stow age compartment for customer literature
6 Starting assis tance →
352
7 Tocheck and top up operating 0uids →
385
8 Tow- starting or towing away →
356
9 Flat tyre →
342 A
B-pillar with:
QR code for accessing there scue card →
41
B Tow- starting or towing away →
356
C TIREFIT kit →
344
D Firs t-aid kit (soT sided) →
341
E Fuel /ller 0ap with:
information label on fuel type →
182
information label on tyre pressure →
365
QR code for accessing there scue card →
41
F Warning triangle →
340 At
a glance – Emer gencies and breakdowns
21 21

Pr
ot
Pr otection of t
ection of t he en
he envir
vironment
onment
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TE Environmental
damage due tooperating conditions and
personal driving st yleThe pollutant emission of
theve hicle is
directly related tothewa yyo u operate the
ve hicle.
Operate your vehicle in an environmentally
re sponsible manner tohelp pr otect the envi-
ro nment. Please obser vethefo llowing recom-
mendations on operating conditions and per-
sonal driving st yle.
Oper
Oper ating conditions:
ating conditions: #
Make sure that the tyre pressure is cor-
re ct. #
Do not car ryany unnecessary weight
(e.g. roof luggage rack s once you no lon-
ge r need them). #
Adhere tothe service inter vals.
A regula rly serviced vehicle will cont rib-
ute toenvironmental pr otection. #
Always ha vemaintenance workcar ried
out at a quali/ed specialist workshop.
P
P er
er sonal dr
sonal dr iving s
iving stytyle:
le: #
Do not depress the accelerator pedal
when starting the engine. #
Do not warm uptheve hicle while sta-
tionar y. #
Drive carefully and maintain a suitable
distance from theve hicle in front. #
Avoid frequent, sudden acceleration and
braking. #
Change gear in good time and use each
ge ar only up toÔ of its maximum
engine speed. #
Switch o. theve hicle in stationary traf-
fi c, e.g. byusing the ECO start/s top
function. #
Drive in a fuel-e1cient manner. Obse rve
th e ECO display for an economical driv-
ing style. Plug-in h Plug-in h
ybr
ybrid
id
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmental
pollution caused byirre sponsible disposal
of the high-voltage battery A high-voltage battery contains materials
which are harmful
tothe environment. #
Dispose of faulty high-voltage batteries
at a quali/ed specialist workshop. T T
ak
ak e-bac
e-bac k of end-of-lif
k of end-of-lif e v
e vehicles
ehicles
EU countr EU countr ies only:
ies onl y:
Mercedes-Benz will take back your end-of-life
ve hicle for environment-fri endly disposal in
accordance with the European Union (EU) End-of-
Life Vehicles Directi ve.
A network of vehicle take -back points and dis-
mantlers has been established foryo uto return
yo ur vehicle. You can lea veit at any of these
points free of charge . This makes an impor tant
cont ribution toclosing there cycling circle and
conserving resources. 24 24
Gene
ral no tes

Centr
Centr
all
ally loc
y loc king and unloc
king and unloc king t
king the v
he vehicle fr
ehicle fr om
om
t
t he inside
he inside #
T
To unloc
o unloc k:
k:press button 1. #
T
To loc
o loc k:
k:press button 2.
The red indicator lamp on button 2lights up
once theve hicle is loc ked.
This does not lock or unlock the fuel /ller 0ap. Plug-in h
Plug-in h ybr
ybrid:
id:the soc ket 0ap is also loc ked and
unloc ked. The soc ket 0ap can be opened even if a
ke y is de tected in the car.
The vehicle is not unloc ked:
R ifyo u ha veloc kedth eve hicle using thekey
R ifyo u ha veloc kedth eve hicle using KEYLESS-
GO Loc
Loc
king/unloc
king/unloc king t
king the v
he v ehicle wit
ehicle wit h KEYLESS-GO
h KEYLESS-GO R
R
eq
eq uir
uir ements:
ements:
R The key is outside theve hicle.
R The dis tance between theke y and theve hicle
does not exceed 1 m.
R The driver's door and the door on which the
door handle is used are closed.
* NO
NOTE
TEDamage totheve hicle caused by
unintentionally opening the boot lid R
when using an automatic car wash
R when using a high pressure cleaner #
Deacti vate the function of theke y in
th ese situations.
or #
Make sure that theke y is at a minimum
dis tance of 3 m away from theve hicle. Obser
vethe no tes:
R onwashing theve hicle in a car wash
(/ page 331)
R on using a high pressure cleaner
(/ page 333) Opening and closing
87 87

Ensure
thefo llowing before starting the engine:
R The legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone.
R It is safe tostart and runth e engine where
yo ur vehicle is par ked.
R The fuel tank is su1cient lyfull.
S
S t
tar
ar ting t
ting t he v
he vehicle (R
ehicle (R emot
emot e Online)
e Online) &
W
WARNING
ARNING Risk of crushing or entrapment
due tounintentional starting of the engine
Limbs could be crushed or trapped if the
engine is star ted unintentionally during service
or maintenance work. #
Always secure the engine against unin-
te ntional starting before ca rrying out
main tenance or repair work. R
R
eq
eq uir
uir ements:
ements:
R Park position jis selected.
R The anti-theT alarm system is not activated.
R The hazard warning light system is switched
o.. R
The bonnet is closed.
R The doors are closed and loc ked.
R The windo wsand sliding sunroof are closed. #
Start theve hicle using the smartphone.
ATer every engine start, the engine runs for
te n minutes.
Yo u can car ryout a maximum of two consecutive
starting attem pts. You must start the engine with
th eke y before trying tostart theve hicle again
with the smartphone.
Yo u can switch o. theve hicle at any time as fol-
lo ws:
R Viath e Smartphone App
R By pressing theÜ orß button on the
key
% Further information can be found in the
smartphone app.
Secur
Secur ing t
ing the v
he vehicle ag
ehicle ag ains
ainst st
t star
arting bef
ting bef or
ore car ry-
e car ry-
ing out maint
ing out maint enance or r
enance or repair w
epair w or
ork:
k: #
Switch on the hazard warning light system.
or #
Unlock the doors.
or #
Open a side window or the sliding sunroof. R
R
unning-in not
unning-in not es
es To
preser vethe engine during the /rst 1,500 km:
R Drive at varying road speeds and engine
speeds.
R Do not drive at speeds greater than
140 km/h.
R Drive theve hicle in drive prog ram A
or ;.
R ShiT tothe next highest gear at theve ry latest
when the needle reaches the last third before
th ere d area in there v counter.
R Do not shiT down manual lyin order tobrake.
R Avoid overstraining theve hicle, e.g. driving at
full thro ttle.
R V
V ehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: do not
depress the accelerator pedal be yond the
pressure point (kickdown). 162
162
Driving and parking

The
Tank is depressurised Ready for refuel-
ling messa geappears in the Instrument Dis-
pla y.
% Inthefo llowing situations there is a malfunc-
tion:
R indicator lamp 20ashes initially and then
goes out
R theye llow ; engine diagnosis warning
lamp lights up
The fuel tank can only be bled if the conditions
mentioned abo veare ful/lled. Otherwise, drive the
ve hicle at least 0.5 km and repeat the procedure.
% Opening the fuel /ller 0ap ma y,in exceptional
cases, take up to15 minutes. 1
Fuel /ller 0ap
2 Brac ketfo r fuel /ller cap
3 Tyre pressure table
4 Fuel type
5 QR code forre scue card #
Press on the back area of fuel /ller 0ap 1. #
Turn the fuel /ller cap anti-clockwise and
re mo veit. #
Insert fuel /ller cap from abo veinto brac ket
2 . #
Comple tely insert the pump nozzle into the
ta nk /ller nec k,hook in place and refuel. #
Only /ll the fuel tank until the pump nozzle
switches o..
% V Vehicles wit ehicles wit h a diesel engine:
h a diesel engine: theta nk /ller
neck is designed forre fuelling at diesel /lling
pumps.
% V
Vehicles wit
ehicles wit h a diesel engine:
h a diesel engine: whenthe fuel
ta nk is comple tely em pty, top up with at least
5 litres of diesel.
% V
Vehicles wit
ehicles wit h a diesel engine:
h a diesel engine: use a /ller neck
with a lar gediame terfo rve hicles with a diesel
engine when topping up fuel from a fuel can.
Otherwise, the /ller neck cannot slide into the
ta nk. #
Replace the cap on the /ller neck and turn
clockwise until it engages audibl y. #
Close fuel /ller 0ap 1. Driving and parking
185
185