2021 MERCEDES-BENZ B-CLASS HATCHBACK reset sun roof

When
theve hicle is switched o., you can con-
tinue tooperate the side windo ws.
This function is available for around four minutes
or until a front door is opened.
A A ut
ut omatic rev
omatic rever
ersing function of t
sing function of t he side windows
he side wind ows
If an obs tacle impedes a side window during the
closing process, the side window will open again
automaticall y.The automatic reve rsing function is
only an aid and is not a substitute foryo ur atten-
tiveness. #
During the closing process, make sure that no
body parts are in the closing area. &
W
WARNING
ARNING Risk of becoming trapped
despite there being reve rsing pr otection
on the side window
The reve rsing function does not react:
R tosoT, light and thin objects, e.g. /n gers.
R during resetting.
The reve rsing function cannot pr event some-
one from becoming trapped in these situa-
tions. #
During the closing process, make sure
th at no body parts are in the closing
area. #
If someone becomes trapped, press the
0062 button toopen the side window
again. A
A
ut
ut omatic function of t
omatic function of t he side windows
he side wind ows In
thefo llowing cases, the side windo wswill be
closed automatically when theve hicle is switched
o.:
R if it starts torain
Ra in is de tected byara in sensor on the wind-
screen.
R inextreme temp eratures
R aTer a cer tain time (depending on the on-
board electrical system voltage)
R ifth ere is a malfunction in the po wer supply
The side windo wswill be closed as far as theve n-
tilation position. V
V ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunroof: oof:the side
windo wswill be closed comple tely ifth e sliding
sunroof is open.
If th e side windo wsare obstructed during auto-
matic closing, the side window concerned will
open again slightl y.ATer an other automatic clos-
ing process, the automatic function forth e sun-
ro of and side windo wsmay be deactivated. The
automatic function will be active again the next
time theve hicle is star ted. Conv Conv
enience opening (v
enience opening (v entilating t
entilating the v
he vehicle
ehicle
bef
bef or
ore st
e st ar
arting a jour
ting a jour ne
ney)
y) &
W
WARNING
ARNING Risk of entrapment when open-
ing a side window
When opening a side windo w,parts of the
body could be dr awn in or become trapped
between the side window and window frame. #
When opening, make sure that nobody is
to uching the side windo w. #
Release the button immediately if some-
body becomes trapped. 96
96
Opening and closing

1
Raise
2 Open
3 Close/lo wer
Use the0057 button tooperate the panorama
sliding sunroof and thero ller sunblind.
The panorama sliding sunroof can be operated
only when thero ller sunblind is open. #
Check whe ther the sliding sunroof can be
ra ised or opened when a roof luggage rack is
/t ted. #
T
T o st o st ar
art aut
t aut omatic oper
omatic oper ation:
ation:pressthe0057
button be yond the point of resis tance or pull
and release it. #
T
T o int
o int err
errup
upt aut
t aut omatic oper
omatic oper ation:
ation:brie0y press
th e0057 button in any direction.
The opening/closing process will be stopped.
A
A ut
ut omatic rev
omatic rever
ersing function of t
sing function of t he sliding sun-
he sliding sun-
r
r oof
oof
If an obstacle obstructs the sliding sunroof during
th e closing process, the sliding sunroof will open
again automaticall y.The automatic reve rsing func-
tion is only an aid and is not a substitute foryo ur
attentiveness. #
During the closing process, make sure that no
body parts are in the closing area. &
W
WARNING
ARNING Risk of becoming trapped
despite there ve rsing function being active
In particular, there ve rsing function does not
re act:
R tosoT, light and thin objects, e.g. /n gers.
R towa rdsth e end of the closing procedure.
R during resetting. #
During the closing process, make sure
th at no body parts are in the closing
area. #
Release the button immediately if some-
body becomes trapped.
or #
Brie0y press the button in any direction
during automatic operation.
The closing process will be stopped. A A
ut
ut omatic rev
omatic rever
ersing function of t
sing function of t he r
he roller sunblind
oller sunblind
If an obstacle obstructs thero ller sunblind during
th e closing process, thero ller sunblind will open
again automaticall y.The automatic reve rsing func-
tion is only an aid and is not a substitute foryo ur
attentiveness. 100
100
Opening and closing

R
R
ectifying pr
ectifying pr oblems wit
oblems with t
h the sliding sunr
he sliding sunr oof
oof &
W
WARNING
ARNING Risk of becoming trapped or
fata l injuries when the sliding sunroof is
closed again
If th e sliding sunroof is closed again immedi-
ately aTer it has been bloc ked or reset, it will
close with increased forc e. #
Make sure that no parts of the body are
in the closing area. #
Release the button immediately if some-
body becomes trapped.
or #
Brie0y press the button in any direction
during the automatic closing process.
The closing process will be stopped. The sliding sunr
The sliding sunr
oof canno
oof cannot be closed and y
t be closed and y ou can-
ou can-
no
no t see t
t see t he cause.
he cause.
% The term "sliding sunroof" also refers to the
panorama sliding sunroof.
If th e sliding sunroof is obstructed during closing
and reopens again slightl y: #
Immediately aTer automatic reve rsing, pull
and hold the0057 button down again tothe
point of resis tance until the sliding sunroof is
closed.
The sliding sunroof will be closed with
increased forc e.
If th e sliding sunroof is obstructed again and
opens again slightl y: #
Repeat the pr evious step.
The sliding sunroof will be closed again with
increased forc e.
V V ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunr oof: t
oof: the slid-
he slid-
ing sunr
ing sunr oof or t
oof or the r
he roller sunblind is no
oller sunblind is no t oper
t operating
ating
smoot
smoot hly
hly.
. #
Reset the sliding sunroof and thero ller sun-
blind.
R
R ese
ese tting t
tting t he sliding sunr
he sliding sunr oof and t
oof and the r
he roller sun-
oller sun-
blind
blind #
Pull and hold the0057 button little bylittle
until the sliding sunroof is fully closed. #
Pull and hold the0057 button little bylittle
until thero ller sunblind is fully closed. #
Use automatic operation tofully open and
th en close the sliding sunroof. Anti-t
Anti-theT
heTprot
pr otection
ection F
F
unction of t
unction of t he immobiliser
he immobiliser The immobiliser pr
events your vehicle from being
star ted without the cor rect key.
The immobiliser is automatically activated when
th eve hicle is switched o., and deactivated when
th eve hicle is switched on. A A
T
TA
A (Anti-
(Anti- TheT
TheT Alar
Alarm syst
m syst em)
em) F
F
unction of t
unction of t heAT
he ATA systA syst em
em
If th eATA system is primed, a visual and audible
alarm is triggered in thefo llowing situations:
R when a door is opened
R when theta ilgate is opened
R when the bonnet is opened
R when interior pr otection is triggered
(/ page 104) 102
102
Opening and closing

R
The air conditioning system is set toair-recir-
culation mode.
R Parking Assist PARKTRONIC is deactivated.
R V
V ehicles wit
ehicles wit h 360° Camer
h 360° Camer a:
a:the front image is
activated aTer appr ox. eight seconds.
If one of the settings cannot be selected, this is
displa yedby a% behind there specti veset-
ting.
Ab ove a speed of 20 km/h Car wash mode is
automatically deacti vated.
The following settings are reset when car wash
mode is deacti vated:
R The outside mir rors are folded out.
R The rain sensor is activated.
R The rear wind owwiper is activated.
R The air conditioning system is set tofresh air
mode.
R Parking Assist PARKTRONIC is reset tothe
pr ev iously selected setting.
R The windo wsand the sliding sunroof remain
closed. R
V
V ehicles wit ehicles wit h 360° Camer
h 360° Camer a:
a:the front image is
deactivated at speeds abo ve18 km/h. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating aut
ating automatic car w
omatic car w ash mode
ash mode R
R
eq
eq uir
uir ements:
ements:
R theve hicle is stationar y.
R the engine is running.
Multimedia system: 4 © 5
Settings 5
Quick access
A
A ctiv
ctiv ating aut
ating aut omatic car w
omatic car w ash mode
ash mode #
Select Car wash mode . #
Select Start.
If one of the settings cannot be selected, this is
displa yedby a% behind there specti veset-
ting.
% For an overview of the settings made when
activating automatic car wash mode
(/ page 343). Deactiv Deactiv
ating aut
ating aut omatic car w
omatic car w ash mode
ash mode #
Select Stop.
The automatic car wash settings are reset.
% The automatic car wash mode is automatically
deacti vated as soon as a speed of 20 km/h is
ex ceeded. Inf
Inf
or
ormation on using a high-pr
mation on using a high-pr essur
essure cleaner
e cleaner &
W WARNING ARNING Risk of an accident when using
high-pressure cleane rswith round-spr ay
nozzles
The water jet can cause extern ally invisible
damage.
Components damaged in this wa y may un ex-
pectedly fail. #
Do not use a high-pressure cleaner with
round-spr aynozzles. #
Have damaged tyres or chassis parts
re placed immediatel y. Maintenance and ca
re
345 345

R
R
ese
ese t function (MBUX multimedia syst
t function (MBUX multimedia syst em)
em) .... 301
R
R esidual heat
esidual heat............................................... 159
R
R est
est or
oring (f
ing (f act
actor
ory se
y se ttings)
ttings)
see Reset function (MBUX multimedia system)
R
R es
es tr
traint syst
aint syst em
em
Basic instructions forch ildren.................. 61
Fu nction in an accident............................ 47
Fu nctionality........................................... .47
Limited pr otection....................................46
Malfunction............................................. 47
Pr otection................................................ 46
Self-test...................................................47
Wa rning lamp........................................... 47
Rev
Rev er erse g
se g ear
ear
Engaging................................................ 188
Rev
Rev er
ersing camera
sing camera
Care...................................................... 348
Fu nction................................................ 258
Opening the camera co ver (360°
Camera)................................................ 263
Switching automatic operation on/o.
(360° Camera)...................................... 263
Rev
Rev er ersing lights (c
sing lights (c hanging bulbs)
hanging bulbs).................. 149
Rims (car
Rims (car e)
e).................................................. 348 R
R oll awa
oll awa y prot
y pr otection
ection
see HOLD function
R
R oller sunblind
oller sunblind
Sliding sunroof......................................... 98
R
R oof lining (car
oof lining (car e)
e).......................................... 349
R
R oof load
oof load.....................................................4 06
R
R oof load display
oof load display
Information............................................1 83
R
R oof lugg
oof lugg ag
age r
e r ack
ack
Loading.................................................. 132
Securing................................................ 132
R R oute
oute
Calculating............................................. 306
Selecting options................................... 306
R R out
out e guidance wit
e guidance wit h augment
h augmented r
ed reality
eality
Ac tivating............................................... 306
Displaying street names and house
numbers................................................ 306
R R out
out e-based oper
e-based oper ating-mode s
ating-mode strtrat
at egy
egy
Fu nction/no tes...................................... 181
R
R out
out e-based speed adapt
e-based speed adapt ation
ation
Fu nction................................................ 240
Setting.................................................. .241 R
R
un-0at
un-0at c
char
har act
acter
eristics
istics
MOExtended tyres................................. 354
R
R unning-in not
unning-in not es
es.......................................... 172 S
S
Safe
Safe ty syst
ty syst ems
ems
see Driving saf ety sy stem
Sa fe
Safe ty v
ty vest
est.................................................. .352
Searc
Searc h light
h light
Switching on/o. (contactless). .............. 294
Seat
Seat 4-waylumbar suppor t............................ 109
adjusting (electrically)............................ 109
Ad justing (Seat Com fort)........................ 108
Ad justing there ar seat (mechanical ly).... 109
Ad justing the seat backrest angle
(rear)..................................................... 125
Ad justment (without Seat Com fort
Pa ckage)................................................ 106
Con/guring settings.............................. .112
Cor rect driver's seat position................. 105
Fo lding back the backrest (rear)............. 124
Fo lding the backrest (front passenger
seat) forw ards....................................... .121 Index
521
521