2021 MERCEDES-BENZ B-CLASS HATCHBACK length

1
V Operates the memory function →
118
2 Adjusts the seats electrically →
109
3 w Switches the seat heating on/o. →
113
4 008E Switches the seat ventilation on/o. →
114
5 0062 Opens/closes there ar leT side wind ow→
95
6 0062 Opens/closes the leT side window →
95
7 00C9 Operates the outside mir rors →
153
8 008C Opens/closes theta ilgate →
89
9 0062 Opens/closes theright side wind ow →
95
A 0062 Opens/closes there ar right side wind ow→
95
B S Child saf ety lock forth ere ar side win-
do ws →
80 C
Opens the door →
85
D ßÜLoc ks/unloc kstheve hicle →
85
E Adjusts the head restraints →
111
F Con/gures the seat settings →
112
G Adjusts the seat backrest inclination →
108
H Adjusts the seat height →
108
I Adjusts the seat cushion inclination →
108
J Adjusts the seat fore -and-aT position →
108
K Adjusts the seat cushion length →
108 At
a glance – Door operating unit and seat adjustment
19
19

with permanent magn
ets. These /elds can be
fo und, forex ample, in the area around the multi-
media and sound system or also in the area of the
seats, depending on theve hicle equipment.
Fo rth is reason, thefo llowing can occur in isolated
cases, depending on the aids used:
R Medical aids malfunctioning
R Adve rse health e.ects
Obser vethe no tes and warnings of the manufac-
turer of the medical aids; if in doubt, contact the
device manufacturer and/or your doctor. If there
is continuing uncer tainty concerning the possibil-
ity of medical aids malfunctioning, Mercedes-
Benz AGrecommends using only fewelectrical
ve hicle systems and/or main taining a distance
from the components.
Plug-in h
Plug-in h ybr
ybrid
id
When charging the high-voltage batter y,ke ep a
distance of at least an arm's length between the
medical aid and thefo llowing components:
R the po wer supply equipment This includes
charging stations in thefo rm of a
wa llbox or a public charging point, forex am-
ple.
R vehicle components car rying live voltage
This includes thech arging cable and the
ch arging cont rol box, forex ample.
Only ha verepairs and maintenance workinthe
area of thefo llowing components car ried out at a
qu ali/ed specialist workshop:
R vehicle components car rying live voltage
R transmission aerials
R multimedia system and sound system
If yo u ha veany queries or suggestions, consult a
qu ali/ed specialist workshop. Im
Im
plied w
plied w arr
arranty
anty
* NO
NOTE
TEDamage totheve hicle arising from
violation of these operating inst ructions. Damage
totheve hicle can arise from violation
of these operating inst ructions. This damage is not co
vered either bythe
Mercedes-Benz implied warranty or bythe
Ne w‑ or Used- Vehicle Warrant y. #
Follow the inst ructions in these operat-
ing inst ructions on proper operation of
yo ur vehicle as well as on possible vehi-
cle damage. QR code f
QR code f
or r
or rescue card
escue card
QR codes are attached in the fuel /ller 0ap and on
th e opposite side on the B-pillar. In theev ent of
an accident, rescue services can use the QR code
to quickly /nd the appropriate rescue card for
yo ur vehicle. The cur rent rescue card contains the
most impor tant information about your vehicle in
a compact form , e.g. thero uting of the electric
lines.
Fu rther information can be obtained at https://
www.mercedes-benz.de/qr-code. Gene
ral no tes
41 41

lamp 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 thech
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. #
Always mo vethe front passenger seat as
fa r back as possible and fully retract the
seat cushion length adjustment. While
doing so, alw ays make sure that the
shoulder belt st rap is cor rectly routed
from the seat belt outlet of theve hicle to
th e shoulder belt guide on thech ild re
straint system. The shoulder belt strap
must be routed forw ards and down wards
from the seat belt outlet. If necessar y,
adjust the front passenger seat accord-
ingl y. #
Always comply with thech ild restraint
system manufactu rer's installation
inst ructions. When /tting a
child restraint system tothe front
passenger seat, obser vetheve hicle-speci/c infor-
mation (/ page 76).
If a per If a per son is sitting on t
son is sitting on t he fr
he front passeng
ont passeng er seat
er seat::
PA SSENGER AIR BAG OFF may be lit continuous ly
or be o., depending on the person's stature.
A person on the front passenger seat must alw ays
obser vethefo llowing information:
R Ifth e front passenger seat is occupied byan
adult or a person with a stature cor responding
to that of an adult, thePA SSENGER AIR BAG
OFF indicator la mpmust be o.. This indicates
th at the front passenger airbag is enabled.
If th ePA SSENGER AIR BAG OFF indicator
la mp is lit continuousl y,an adult or person 58
58
Occupant saf
ety

A
A
djus
djus ting t
ting t he length
he length #
LiT load compartment 0oor 1(inthe bottom
position in theex ample) only slightly using
handle 3and pull it towa rdsyo u. #
Insert load compartment 0oor 1into rear /x-
tures 2. #
Fold load compartment 0oor 1down. A
A
tt
tt ac
ac hing a r
hing a r oof lugg
oof lugg ag
age r
e r ack
ack &
W
WARNING
ARNING Risk of accident due toexceed-
ing the maximum roof load
The vehicle cent reofgrav ity and the usual
driving characteristics as well as the steering
and braking characteristics alter.
If yo uex ceed the maximum roof load, the driv-
ing characteristics, as well as steering and
braking, will be greatly impaired. #
Neverex ceed the maximum roof load
and adjust your driving style. Yo
u will /nd information on the maximum roof
load in the "Technical data" section.
* N
NO OTE
TE Damage totheve hicle due tonot
observing the maximum permitted head-
ro om clearance If
th eve hicle height is greater than the maxi-
mum permitted headroom clearance, thero of
and other parts of theve hicle may be dam-
aged. #
Obser vethe signposted headroom clear-
ance. #
Ifth eve hicle height is greater than the
permitted headroom clearance, do not
enter. #
Obser vethech anged vehicle height with
add-on roof equipment. *
N NOOTE
TE Vehicle damage from non-appr oved
ro of luggage racks The
vehicle could be damaged byroof luggage
ra ck sth at ha venot been tested and appro ved
fo r Mercedes-Benz. #
Use only roof luggage rack ste sted and
appro vedfo r Mercedes-Benz. #
Depending on theve hicle equipment,
ensu rethat the sliding sunroof can be
fully raised when thero of luggage rack is
/t ted. #
Depending on theve hicle equipment,
ensu rethat theta ilgate can be fully 132
132
Seats and st
owing

If dr
owsiness or increasing lapses in concent ra-
tion are de tected, theATTENTION ASSIST: Take
a break! warning appears in the Instrument Dis-
pla y.Yo u can ackno wledge the message and take
a break where necessar y.Ifyo u do not take a
break and ATTENTION ASSIST continues todetect
increasing lapses in concentration, you will be
wa rned again aTer a minimum of 15 minutes. Yo
u can ha vethefo llowing status information for
AT TENTION ASSIST displa yed in the assistance
menu of the on-board computer:
R The length of the journey since the last break.
R The attention le vel de term ined byATTENTION
ASSIS T: -
the fuller the circle, the higher the atten-
tion le vel de term ined
- asyour attention wanes, the circle in the
cent reofthe display becomes smaller
If AT TENTION ASSIST is unable tocalculate the
attention le vel and cannot issue a warning, the
System suspended message appears.
If a warning is given in the Instrument Displa y,the
multimedia system o.ers tosear chfor a rest
area. You can select a rest area and start naviga-
tion tothis rest area. This function can be acti va-
te d and deactivated in the multimedia system.
If AT TENTION ASSIST is deactivated, theÛ
symbol appears in the assistance graphic in the
Instrument Displ ay. ATer theve hicle is star ted,
AT TENTION ASSIST is automatically activated. The
last selected sensitivity le velre mains stored.
Syst
Syst em limits
em limits
AT TENTION ASSIST is active in the 60 km/h to
200 km/h speed range. Pa
rticular lyin thefo llowing situations, ATTENTION
ASSIST only functions in a restric ted manner and
wa rnings may be dela yed or not occur:
R Ifyo u ha vebeen driving for less than appr ox-
imately 30 minutes.
R Ifth ero ad condition is poor (une venro ad sur-
fa ce or po tholes).
R Ifth ere is a strong side wind.
R Ifyo u adopt a sporty driving style (high corner-
ing speeds or high rates of acceleration).
R IfAc tive Steering Assist is activated and active
(/ page 241).
R Ifth e time has been set incor rectl y.
R Ifyo uch ange lanes and vary your speed fre-
qu ently in active driving situations.
The ATTENTION ASSIST dr owsiness or alertness
assessment is reset and restar ted when continu-
ing the journey in thefo llowing situations:
R You switch o. theve hicle.
R Ifyo u unfasten your seat belt and open the
driver's door (e.g. tochange drivers or take a
break). Driving and parking
231
231

de
tected, the sensors in the front and rear
bumper must /rst de tect the object while you are
driving past it.
During the parking procedure or manoeuvring,
objects are de tected as theve hicle drives past. If
yo u steer in the direction of a de tected obs tacle
and there is a risk of a lateral collision, a warning
is issued and the segments light up in colour in
th e displa y.
The segment colour changes depending on the
distance tothe de tected obs tacle:
R Y Yellow
ellow :
:appr oximately 30 - 60 cm
R R
Red:
ed: less than appr oximately 30 cm
In order for lateral, front or rear segments tobe
displa yed, theve hicle must /rst tr avel a distance
of at least half a vehicle's length. Once theve hicle
has tr avelled the length of theve hicle, all of the
lateral front and rear segments can be displ ayed. Pa
rking Assist PARKTRONIC displa y:vehicles
without a 360° Camera
1 Operational front and rear
2 Operational front, rear and sides
3 Obstacle de tected at the front right (yellow)
and rear (red) Pa
rking Assist PARKTRONIC displa y:vehicles
with a 360° Camera
1 Operational front and rear
2 Operational front, rear and sides
3 Obstacles de tected at the front right (red)
Sa ved obstacles on the sides are dele ted in the
fo llowing situations, forex ample:
R You park theve hicle and switch it o..
R You open the doors.
ATer the engine is restar ted, obstacles on the
sides must be de tected again before a new warn-
ing can be issued. 266
266
Driving and parking

ular
the data pr otection regulations, in your
countr y.
Fo rth is reason, before using the dashcam
inform yourself about there gulation de tails for
th ere specti vecount ry.
This function is not permitted in all countries. #
Obser vethe count ry-speci/c regula-
tions. Selecting a USB de
Selecting a USB de
vice f
vice for a video r
or a video r ecor
ecording with
ding with
t
t he dashcam
he dashcam R
R
eq
eq uir
uir ements:
ements:
R Atleast one USB device is connected with the
multimedia system .
Multimedia system: 4 © 5
Mercedes me & Apps
5 Dashcam #
Select the USB device.
% When USB devices contain multiple partitions,
re corded video /les are not alw ays displa yed
in there cording list. Mercedes-Benz
recommends that you use
USB devices with one partition. S
S
t
tar
ar ting or st
ting or st opping video r
opping video r ecor
ecording wit
ding wit h t
h the
he
dashcam
dashcam R
R
eq
eq uir
uir ements:
ements:
R A USB device is connected with the multime-
dia system .
R The vehicle is switched on.
Multimedia system: 4 © 5
Mercedes me & Apps
5 Dashcam #
If se veral USB devices are connected with the
multimedia system, select a USB device
(/ page 310). #
Select theIndividual recording orLoop
recording recording mode.
If Individual recording is selected andthe
memory is full there cording stops.
If Loop recording has been selected, se veral
short video /les are recorded. When the mem-
ory limit is reached, the oldest video /le is dele
ted and recording is continued automati-
call y. #
T
To st
o st art
art::select Start recording.
The length of there cording is shown. The
Please do not remove the storage medium.
message appears. The video /le is stored on
th e USB device. #
T To end:
o end: selectEnd recording .
A report may appear in thefo llowing cases:
R Forth eIndividual recording recording mode:
th e memory is full or there are only a few
minutes recording time available. The video
re cording stops or will be stopped imminent ly.
Change the USB device or dele tea video /le.
R If a video recording has star ted and a national
border is de tected, theNational border
crossed. Please observe the countryspecific
regulations regarding video recording. mes-
sage appears.
This function is not available in all countries.
R The camera is not functional, theCamera
unavailable message appears. 310 310
MBUX multimedia system

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 dimen-
hang dimen-
sion
sion
All model s8 88 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
B 160
1300 kg
B 180, (manual and
automatic transmis-
sion)
B 180 d, (manual and
automatic transmis-
sion) 1400 kg
B 200 4MATIC
B 220 d 4MATIC
B 250 4MATIC 1800 kg
All other model s1 600 kg T T
o
o wing capacity
wing capacity , unbr
, unbrak
aked
ed Model
Model
B 160
B 180, manual trans-
mission
690 kg
B 180, automatic
transmission 700 kg
B 200, manual trans-
mission 695 kg
B 200, automatic
transmission 705 kg
B 200 4MATIC
B 250 745 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
B 250
e1 600 kg Te
ch nical data
409 409