Mercedes-Benz A-Class 2021 User manual

Digital – in thevehicleVehicle document walletDigital – on the InternetDigital – as an app
Familiarize yourself with the con‐
tents of the Operator's Manual
directly via thevehicle's multi‐
media system (menu item "Vehi‐
cle information"). Start with the
quick guide or broaden your
knowledge with practical tips.
Here you can find comprehen‐
sive information about operating
your vehicle and about services
and guarantees in printed form.
You can find the Operator's Man‐
ual on the Mercedes-Benz home‐
page.
The Mercedes-Benz Guides app
is available free-of-charge in
familiar app stores.
É17758433109ËÍ
1775843310
Apple®iOS AndroidTM
Order no. P177 0651 13 Part no. 177 584 33 10
Edition B 2021
A-Class
Operator's Manual
Mercedes-Benz
Mercedes-Benz A-Class

Publication details
Internet
Further information about Mercedes-Benz vehi‐
cles and about Mercedes‑Benz AG can be found
on thefollowing websites:
https://www.mbusa.com (USA only)
https://www.mercedes-benz.ca (Canada only)
Documentation team
©Mercedes‑Benz AG: Not to be reprinted, trans‐
lated or otherwise reproduced, in whole or in
part, without written permission from
Mercedes‑Benz AG.
Vehicle manufacturer
Mercedes‑Benz AG
Mercedesstraße 120
70372 Stuttgart
Germany
Front passenger airbag warning
Airbag warning stickerfor USA and Canada
&WARNING Risk of injury or death if the
co-driver airbag is enabled
If the co-driver airbag is enabled, a child on
the co-driver seat may be struck by the co-
driver airbag during an accident.
NEVER use a rearward-facing child restraint
system on a seat with an ENABLED FRONT
AIRBAG; DEATH or SERIOUS INJURY to the
CHILD can occur.
Observe thechapter "Children in thevehicle".
As at 09.04.20

Thank youfor purchasing a Mercedes-Benz
Before youfirst drive off, read this Operator's
Manual carefully and familiarize yourself with
your vehicle. Foryour own safety and a longer
operating lifespan of thevehicle, follow the
instructions and warning notices in this Opera‐
tor's Manual. Disregarding them may lead to
damage to thevehicle or injury to people.
Damage to thevehicle resulting from the disre‐
gard of the instructions is not coveredby the
Mercedes-Benz Limited Warranty.
The standard equipment and product description
of your vehicle may vary and depends on thefol‐
lowing factors:
RModel
ROrder
RNational version
RAvailability
Mercedes-Benz reservestheright to introduce
changes in thefollowing areas:
RDesign
REquipment
RTechnical features
The equipment in your vehicle may therefore dif‐
fer from that shown in the descriptions and illus‐
trations.
The following documents are integral parts of
thevehicle:
RDigital Operator's Manual
RPrinted Operator's Manual
RMaintenance Booklet
REquipment-dependent Supplements
Keep these documents in thevehicle at all
times. If you sell thevehicle, always pass all of
the documents on to the new owner.
Mercedes-Benz USA, LLC
Mercedes-Benz Canada, Inc.
A Daimler Company
1775843310
1775843310

Symbols ........................................................ 5
At aglance .................................................... 6
Cockpit ........................................................... 6
Indicator and warning lamps (standard) ........ 10
Indicator and warning lamps (Wide‐
screen Cockpit) ............................................ 12
Overhead control panel ................................ 14
Door operating unit and seat adjustment ..... 16
Emergencies and breakdowns ...................... 18
Digital Operator's Manual ......................... 20
Calling up the Digital Operator's Manual ...... 20
General notes............................................. 22
Protecting the environment .......................... 22
Genuine Mercedes-Benz parts ......................22
Operator's Manual ........................................23
Service and vehicle operation ....................... 24
Operating safety ...........................................25
Declaration of conformity for wireless
vehicle components .....................................26
Diagnostics connection ................................ 27
Qualified specialist workshop ....................... 28
Correct use of thevehicle ............................28
Notesfor persons with electronic medi‐
cal aids ......................................................... 28
Problems with your vehicle ........................... 29
Reporting safety defects ...............................29
Limited Warranty .......................................... 30
QR code forrescue card ...............................30
Data storage .................................................30
Copyright ...................................................... 35
Occupant safety......................................... 36
Restraint system ...........................................36
Seat belts ..................................................... 38
Airbags ......................................................... 42
PRE-SAFE®system ....................................... 50
Automatic measures after an accident ......... 51
Safely transporting children in thevehi‐
cle ................................................................. 51
Notes on pets in thevehicle .........................65
Opening and closing .................................. 66
SmartKey ...................................................... 66
Doors ............................................................ 70
Trunk ............................................................ 73
Side windows ............................................... 77
Sliding sunroof ............................................. 80
Anti-theft protection .....................................84
Seats and stowing ...................................... 87
Notes on the correct driver's seat posi‐
tion ............................................................... 87
Seats ............................................................ 88
Steering wheel ..............................................95
Easy entry and exit feature ...........................96
Memory function .......................................... 97
Stowage areas .............................................. 98
Sockets ....................................................... 105
Wireless charging of the mobile phone
and connection with theexterior antenna .. 105
Installing/removing thefloor mats .............107
Light and visibility ................................... 109
Exterior lighting .......................................... 109
Interior lighting ............................................ 114
Windshield wiper and windshield washer
system ........................................................ 115
Mirrors ........................................................ 117
2Contents

Climate control ......................................... 121
Overview of climate control systems ..........121
Operating the climate control system ......... 121
Driving and parking ................................. 125
Driving ........................................................ 125
DYNAMIC SELECT switch ............................134
Automatic transmission .............................. 137
Function of the 4MATIC ...............................141
Refueling .................................................... 142
Parking .......................................................144
Driving and driving safety systems .............. 151
Vehicle towing instructions .........................200
Instrument Display and on-board
computer .................................................. 201
Notes on the Instrument Display and on-
board computer .......................................... 201
Instrument display overview .......................202
Overview of the buttons on thesteering
wheel ..........................................................203
Operating the on-board computer .............. 203
Overview of what is shown on the multi‐
function display .......................................... 205
Head-up Display ......................................... 205
MBUX multimedia system ...................... 208
Overview and operation .............................. 208
System settings .......................................... 217
Navigation ................................................... 221
Telephone ...................................................226
Mercedes me and apps .............................. 230
Mercedes-Benz emergency call system ...... 238
Radio & media ............................................ 242
Sound settings ............................................ 249
Maintenance and care ............................. 250
ASSYST PLUS service interval display ........ 250
Engine compartment .................................. 251
Checking the brakepad thickness ...............257
Cleaning and care .......................................257
Breakdown assistance ............................ 265
Emergency .................................................. 265
Flat tire ....................................................... 266
Battery (vehicle) .......................................... 273
Towstarting or towing away ....................... 278
Electrical fuses ........................................... 283
Wheels and tires ...................................... 287
Notes on noise or unusual handling char‐
acteristics ...................................................287
Notes on regularly inspecting wheels and
tires ............................................................ 287
Notes on snow chains ................................ 288
Tire pressure .............................................. 288
Loading thevehicle .................................... 295
Tire labeling ................................................ 299
Definition of termsfor tires and loading ..... 304
Changing a wheel ....................................... 307
Emergency spare wheel .............................. 317
Technical data .......................................... 320
Notes on technical data .............................. 320
Vehicle electronics .....................................320
Radio operating permits forvehicle com‐
ponents ...................................................... 322
Vehicle identification plate, VIN and
engine number overview ............................ 322
Operating fluids .......................................... 323
Vehicle data ................................................ 330
Contents 3

Display messages and warning/indi‐
cator lamps .............................................. 332
Display messages .......................................332
Warning and indicator lamps ...................... 379
Index ......................................................... 394
4Contents

In this Operator's Manual, you will find thefol‐
lowing symbols:
&DANGER Danger due to not observing
thewarning notices
Warning notices draw your attention to haz‐
ards that may endanger your health or life, or
the health or life of others.
#Observe thewarning notices.
+ENVIRONMENTAL NOTE Environmental
damage due to failure to observe envi‐
ronmental notes
Environmental notes include information on
environmentally responsible behavior or envi‐
ronmentally responsible disposal.
#Observe environmental notes.
*NOTE Damage to property due to failure
to observe notes on material damage
Notes on material damage inform you of
risks which may lead to your vehicle being
damaged.
#Observe notes on material damage.
%These symbols indicate useful instructions
or further information that could be helpful
to you.
#Instruction
(/page)Further information on a topic
Display Information on the multifunction dis‐
play/media display
4Highest menu level, which is to be
selected in the multimedia system
5Relevant submenus, which are to be
selected in the multimedia system
*Indicates a cause
Symbols 5

Left-hand-drive vehicles
6At aglance – Cockpit

1Steering wheel gearshift paddles →140
2Combination switch →110
3Instrument display →202
4DIRECT SELECT lever →137
5Start/stop button →126
èECO start/stop function →133
6Media display →208
7Climate control systems →121
8£Hazard warning light system →111
9PASSENGER AIR BAG indicator lamps →47
AGlove box →100
BStorage compartment →100
CCup holder
D8Controller forvolume and switching
sound on/off
→208
ÜSwitches the MBUX multimedia system
on/off
→208
EzCalls up navigation →210
F|Calls up radio or media →210
G%Calls up thetelephone →210
HßCalls up favorites →210
IyCalls up vehicle functions →210
JcActive Parking Assist →196
KDYNAMIC SELECT switch →135
LTouchpad →210
MControl panel forthe MBUX multimedia sys‐
tem
→203
NAdjusts thesteering wheel →95
OýSwitches thesteering wheel heater
on/off
→95
PControl panel:
On-board computer →203
Cruise control →161
Active Distance Assist DISTRONIC →164
At aglance – Cockpit 7

QDiagnostics connection →27
ROpens the hood →251
S!Electric parking brake →148
TLight switch →109
8At aglance – Cockpit

Instrument Display (standard)
10 At aglance – Indicator and warning lamps (standard)

1!ABS →390
2#! Turn signal lights →110
3hTire pressure monitoring system →392
4#Electrical malfunction →382
5LDistance warning →389
6éRecuperative Brake System, USA only →386
JBrakes (yellow), Canada only →386
7Brakes (red) →386
$USA only
JCanada only
8!Electric parking brake (yellow) →386
9Electric parking brake (red) →386
FUSA only
!Canada only
A;Check Engine →382
BRRear fog lamp →110
CKHigh beam →110
LLow beam →109
TParking lamps →109
DåESP®OFF →390
÷ESP®→390
E6Restraint system →380
FFuel level →202
GæReserve fuel with fuel filler flap location
indicator
→382
HÙPowersteering →381
IüSeat belt →380
At aglance – Indicator and warning lamps (standard) 11

Widescreen Cockpit Instrument Display
12 At aglance – Indicator and warning lamps (Widescreen Cockpit)

1#! Turn signal lights →110
26Restraint system →380
3åESP®OFF →390
÷ESP®→390
4RRear fog lamp →110
5KHigh beam →110
LLow beam →109
TParking lamps →109
6ÿCoolant temperature →382
7Coolant temperature display →202
8!Electric parking brake (yellow) →386
9éRecuperative Brake System, USA only →386
JBrakes (yellow), Canada only →386
A#Electrical malfunction →382
BLDistance warning →389
C!ABS →390
DÙPowersteering →381
EhTire pressure monitoring system →392
F8Reserve fuel with fuel filler flap location
indicator
→382
GFuel level →202
HElectric parking brake (red) →386
FUSA only
!Canada only
IBrakes (red) →386
$USA only
JCanada only
JüSeat belt →380
K;Check Engine →382
LäIndicator lamp inoperative
At aglance – Indicator and warning lamps (Widescreen Cockpit) 13

14 At aglance – Overhead control panel

1Sun visors
2pSwitches the left-hand reading lamp
on/off
→114
3|Switches automatic interior lighting con‐
trol on/off
→114
4cSwitches the front interior lighting
on/off
→114
5uSwitches therear interior lighting
on/off
→114
6pSwitches theright-hand reading lamp
on/off
→114
7;me button →232
8GSOS button →232
93Opens/closes the panorama roof with
power tilt/sliding panel
→80
3Opens/closes theroller sunblind →80
AInside rearview mirror →118
At aglance – Overhead control panel 15

16 At aglance – Door operating unit and seat adjustment

1Operates the memory function →98
2Adjusts the seats electrically →90
3wSwitches the seat heating on/off →93
4sSwitches the seat ventilation on/off →94
5ßÜ Locks/unlocks thevehicle →70
6Opens the door →70
7pOpens the trunk lid →73
8ÍOperates the outside mirrors →117
9WOpens/closes theright side window →77
AWOpens/closes therear right side win‐
dow
→77
BChild safety lock fortherear side windows →64
CWOpens/closes therear left side window →77
DWOpens/closes the left side window →77
EAdjusts the head restraints →91
FConfigures the seat settings →93
GAdjusts the seat backrest inclination →90
HAdjusts the seat height →90
IAdjusts the seat cushion inclination →90
JSets the seat fore-and-aft position →90
KAdjusts the seat cushion length →90
At aglance – Door operating unit and seat adjustment 17

18 At aglance – Emergencies and breakdowns