display MERCEDES-BENZ B-CLASS HATCHBACK 2021 Service Manual

Appl
Appl
ying/r
ying/r eleasing t
eleasing t he electr
he electric par
ic parking br
king br ake
ake
manual ly
manually
Appl Appl ying
ying #
Push handle 1.
The red0024 indicator lamp lights up in the
inst rument clus ter. %
The electric parking brake is only securely
applied if there d0024 indicator lamp is lit
continuousl y.
R R eleasing
eleasing #
Switch on theve hicle. #
Pull handle 1.
The red0024 indicator lamp in the inst rument
cluster goes out.
Emerg Emerg ency br
ency br aking
aking #
Press and hold handle 1.
As long as theve hicle is in motion, the
Release parking brake message is displayed
and there d0024 indicator lamp 0ashes.
When theve hicle has been braked toa stand-
still, the electric parking brake is applied. The
re d0024 indicator lamp lights up in the inst ru-
ment cluster. Inf
Inf
or
ormation on collision det
mation on collision det ection on a park
ection on a parked
ed
v
v ehicle
ehicle If a collision is de
tected when theto w- awa y pro-
te ction is primed on a loc kedve hicle, you will re
ceive a noti/cation in the multimedia system
when you switch theve hicle on.
Yo u will receive information about thefo llowing
points:
R The area of theve hicle that may ha vebeen
damaged.
R The forc e of the impact.
The following situation can lead toinadver tent
activation:
R The par kedve hicle is mo ved, forex ample, in a
two-s tore yga rage.
% Deactivate tow- awa y protection in order to
pr ev ent inadver tent activation. If you deacti-
va te to w-awa y protection, collision de tection
will also be deactivated.
Syst
Syst em limits em limits
De tection may be restric ted in thefo llowing situa-
tions:
R theve hicle is damaged without impact, for
ex ample, if an outside mir ror is torn o. or the
paint is damaged byakey
R an impact occurs at low speed Driving and parking
221 221

ESP
®
is deactivated if the00BB ESP®
OFF warn-
ing lamp lights up continuously in the inst rument
cluster.
Obser vethefo llowing points when ESP ®
is deacti-
va ted:
R Driving stability will no longer be impr oved.
R The drive wheels could spin.
R ETS/4ETS traction control is still active.
% When ESP ®
is deactivated, you are still assis-
te dby ESP ®
when braking.
If th e00E5 ESP®
wa rning lamp 0ashes in the
inst rument clus ter,one or se veral wheels has
re ached its grip limit:
R Adapt the driving style tosuit the pr evailing
ro ad and weather conditions.
R Do not deactivate ESP ®
under any circums tan-
ces.
R Only dep ress the accelerator pedal as far as is
necessar y. It may be best
todeactivate ESP ®
in thefo llowing
situations:
R When using snow chains.
R In deep sno w.
R On sand or grav el.
% Spinning the wheels results in a cutting
action, which enhances traction.
If th e00E5 ESP®
wa rning lamp lights up continu-
ousl y,ESP ®
is not available due toa malfunction.
Obser vethefo llowing information:
R Warning and indicator lamps (/ page 479)
R Display message s (/page 412)
ET
ET S/4ET S/4ET S (Electr
S (Electr onicTr
onic Traction Syst
action Syst em)
em)
ETS/4ETS traction cont rol is part of ESP ®
and
makes it possible topull away and accelerate on a
slippery car riag ewa y.
ETS/4ETS can impr ovetheve hicle's traction by
inter vening in thefo llowing ways:
R The drive wheels are braked individually if they
spin. R
More drive torque is tr ansferredto the wheel
or wheels with traction.
In0uence
In0uence of dr
of driv
ive pr
e pr ogr
ograms on ESP
ams on ESP ®
®
The drive prog rams enable ESP ®
to adapt todif-
fe re nt we ather and road conditions as well as the
driver's prefer red driving style. Depending on the
selected drive prog ram, the appropriate ESP ®
mode will be activated. You can select the drive
prog rams using theDY NAMIC SELECT switch
(/ page 183). F
F
unction of ESP
unction of ESP ®
®
Cr
Cr osswind Assist
osswind Assist ESP
®
Crosswind Assist de tects sudden gusts of
side wind and helps the driver tokeep theve hicle
in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds between appr ox. 75 km/h and
200 km/h when driving straight ahead or cor-
nering slightl y.
R The vehicle is stabilised bymeans of individual
brake application on one side. 226 226
Driving and parking

F
F
unction of ESP
unction of ESP ®
®
tr
trailer st
ailer st abilisation
abilisation &
W
W ARNING
ARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot pr event lur ching of
th eve hicle/trailer combination. Trailers with a
high cent reofgrav ity may tip over before
ESP ®
de tects this. #
Always adapt your driving style tosuit
th e cur rent road and weather conditions. When driving with a trailer, ESP
®
can stabilise
yo ur vehicle if the trailer begins toswer vefrom
side toside:
R ESP ®
trailer stabilisation is active abo ve
speeds of 65 km/h.
R Slight swerving is reduced bymeans of a tar-
ge ted, individual brake application on one
side.
R Intheev ent of se vere swerving, the engine
output is also reduced and all wheels are
braked. ESP
®
trailer stabilisation may be impaired or may
not function if:
R The trailer is not connected cor rectly or is not
de tected proper lyby theve hicle. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating ESP
ating ESP®
®
(Electr
(Electr onicSt
onic Stability
ability
Pr
Pr ogr
ogr am)
am) Multimedia system:
4 © 5
Settings 5
Quick access
% ESP®
can only be activated/deactivated using
qu ick access when at least one other function
is available in quick access. ESP ®
can other-
wise be found in theAssistance menu. #
Select ESP. #
Select Onor00BB Off.
% If ESP ®
is deactivated and drive prog ram
Î was pr eviously selected, drive prog ram
A is automatically activated the next time
th e engine is star ted.
ESP ®
is deactivated if the00BB ESP®
OFF warn-
ing lamp lights up continuously in the inst rument
clus ter. Obser
vethe information on warning lamps and
display message s which may be shown in the
inst rument cluster. F
F
unction of EBD
unction of EBD Electronic Breakforce Distribution (EBD) is
char-
acterised bythefo llowing:
R Monitoring and regulating the brake pressure
on there ar wheels.
R Impr oved driving stability when braking, espe-
cially on bends. F
F
unction of S
unction of S TEER C
TEER CONTR
ONTROL
OL ST
EER CONTROL assists youby transmitting a
noticeable steering forc eto the steering wheel in
th e direction requ ired forve hicle stabilisation.
This steering recommendation is given in thefo l-
lowing situations:
R both right wheels or bo thleT wheels are on a
we t or slippery road sur face when you brake
R theve hicle starts toskid Driving and parking
227
227

Syst
Syst
em limits
em limits
ST EER CONTROL may be impaired or may not
function in thefo llowing situations:
R ESP ®
is deactivated.
R ESP ®
is malfunctioning.
R The steering is malfunctioning.
If ESP ®
is malfunctioning, you will be assisted fur-
th er by the electric po wer steering. HOLD function
HOLD function
HOLD function
HOLD function
The HOLD function holds
theve hicle at a stand-
still without requ iring youto depress the brake
pedal, e.g. while waiting in tra1c.
The HOLD function is only an aid. The responsibil-
ity forth eve hicle safely standing still remains with
th e driver.
Syst Syst em limits em limits
The HOLD function is only intended toprov ide
assistance when driving and is not a su1cient
means of safeguarding theve hicle against rolling
awa y when stationa ry. R
The incline must not be greater than 30%.
A
A ctiv ctiv ating/deactiv
ating/deactiv ating t
ating t he HOLD function
he HOLD function &
W
WARNING
ARNING Risk of an accident due tothe
HOLD function being active when you
lea vetheve hicle
If th eve hicle is only braked with the HOLD
function it could, in thefo llowing situations,
ro llawa y:
R Ifth ere is a malfunction in the system or in
th e po wer suppl y.
R Ifth e HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. byave hicle occupant. #
Always secure theve hicle against rolling
awa y before you lea veit. R
R
eq
eq uir
uir ements:
ements:
R The vehicle is stationar y.
R The driver's door is closed or the seat belt on
th e driver's side is fastened. R
The vehicle has been star ted or has been
automatically switched o. bythe ECO start/
stop function.
R The vehicle has been star ted.
R The electric parking brake is released.
R Active Distance Assist DISTRONIC is deactiva-
te d.
R V
V ehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: the
transmission is in position 005B,005Eor005C.
A
A ctiv
ctiv ating t
ating t he HOLD function
he HOLD function #
Depress the brake pedal, and aTer a short
time quickly depress fur ther until the00D9
display appears in the Instrument Displa y. #
Release the brake pedal.
Deactiv
Deactiv ating t
ating the HOLD function
he HOLD function #
Depress the accelerator pedal topull away.
or #
Depress the brake pedal until the00D9 display
disappears from the Instrument Displa y.228
228
Driving and parking

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

Se
Se
tting A
tting A TTENTION ASSI ST
TTENTION ASSIST
Multimedia system:
4 © 5
Settings 5
Assistance
5 Attention Assist
Se
Se tting op
tting op tions
tions #
Select Standard ,Sensitive orOff .
Sugg
Sugg es
esting a rting a r es
est art ar ea
ea #
Select Suggest rest area .#
Activate or deactivate the function.
If AT TENTION ASSIST de tects fatigue or
increasing lack of attention, it suggests a rest
area in the vicinity. #
Select the suggested rest area.
Yo u are guided tothe selected rest area. Cr
Cr
uise contr
uise control and limit ol and limit er
er F
F
unction of cr
unction of cr uise contr
uise controlol
Cruise control regula testh e speed totheva lue
selected bythe driver.
If yo u accelerate toove rtake, forex ample, the
stored speed is not dele ted. If youre mo veyour fo
ot from the accelerator pedal aTer overtaking,
cruise cont rol will resume speed regulation back
to the stored speed.
Yo u can store any speed abo ve20 km/h up tothe
maximum design speed or up tothe set winter
tyre limit.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 223).
Display Display s in t
s in the Ins
he Ins tr
trument Display
ument Display
R h (gre y): cruise control is selected but not
yet activated.
R h (gre en): cruise control is active.
A stored speed appears along with theh dis-
pla y.
% The segments extending from the cur rent
stored speed tothe end of the scale, or tothe
set winter tyre limit, light up in the speedome-
te r. Syst Syst
em limits em limits
Cruise control may be unable tomaintain the
stored speed on uphill gradients. The stored
speed is resumed when thegr adient evens out.
Change into a lo werge ar in good time on long and
steep downhill gradients. Take particular no teof
th is when driving a laden vehicle. By doing so, you
will make use of the engine's braking e.ect. This
re lie vesth e load on the brake system and pre-
ve nts the brakes from overheating and wearing
to oqu ickl y.
Do not use cruise control in thefo llowing situa-
tions:
R in tra1c situations which requ ire frequent
ch anges of speed, e.g. in heavy tra1c, on
winding roads
R on slippery roads. Accelerating can cause the
drive wheels tolose traction and theve hicle
could then skid.
R when visibility is poor
F
F unction of t
unction of t he limit
he limiter
er
The limiter restricts the speed of theve hicle. To
re duce the speed tothe set speed, the limiter
applies the brakes automaticall y.232
232
Driving and parking

Yo
u can limit the speed as follo ws:
R V
Var
ar iable:
iable: for a short-term speed restriction,
e.g. in built-up areas
R P
P er
er manent
manent :
:fo r a longer-term speed restric-
tion, e.g. in winter ty remode
Yo u can store any speed abo ve20 km/h up tothe
maximum design speed or up tothe set winter
tyre limit. You can also per form settings while the
ve hicle is stationary if theve hicle has been star-
te d.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 223).
Display
Display s in t
s in the Ins
he Ins tr
trument Display
ument Display
R 00CB (gre y): variable limi ter is selected but not
yet activated.
R 00CB (0ashes grey ):va riable limi ter is temp o-
rari lypassive.
R 00CB (gre en): variable limi ter is activated.
A stored speed appears along with the00CB dis-
pla y.The segments in the speedome ter light up,
up tothe cur rently stored speed. If
yo u depress the accelerator pedal be yond the
pressure point (kickdown), theva riable limi ter
switches topassive mode. The Limiter passive
message appears in the Instrument Display and
th e00CB display 0ashes.
The variable limi ter is reactivated in thefo llowing
situations:
R Ifth eve hicle speed drops below the stored
speed.
R Ifth e stored speed is called up.
R Ifyo u store a new speed.
Oper
Oper ating cr
ating cr uise contr
uise contr ol or t
ol or the v
he var
ariable limit
iable limit er
er &
W
W ARNING
ARNING Risk of accident due tostored
speed
If yo u call up the stored speed and this is
lo we rth an your cur rent speed, theve hicle
decelerates. #
Take into account the tra1c situation
before calling up the stored speed. R
R
eq
eq uir
uir ements:
ements:
Cruise control R Cruise control is selected.
R ESP ®
must be activated, but not inter vening.
R The vehicle speed is at least 20 km/h.
R The transmission is in position 005B.
Va riable limi ter
R The variable limi ter is selected. Driving and parking
233
233

%
Ifyo u brake, deactivate ESP ®
or if ESP ®
inter-
ve nes, cruise cont rol is deactivated. The varia-
ble limi ter is not deactivated.
Inf
Inf or
ormation on t
mation on t he per
he per manent limit
manent limit er
er
If th eve hicle should ne verex ceed a speci/c
speed (e.g. for driving in winter tyre mode), you
can set this speed with the permanent limiter.
Yo u do this by limiting the speed between
160 km/h and 240 km/h in the multimedia sys-
te m (/ page 235).
Shortly before the set speed is reached, it
appears in the Instrument Displa y.When you con-
/rm the message, display messages no longer
appear until you switch o. theve hicle. The speed
will only be displ ayed again once theve hicle has
been restar ted or if the set speed is changed.
The permanent limi ter does not switch topassive
mode even during kickdown and the driven speed
re mains below the set speed. Se
Se tting t
tting t he limit speed f
he limit speed f or wint
or winter tyr
er tyres
es
Multimedia system:
4 © 5
Settings 5
Vehicle
5 Winter tyres limit #
Select a speed or deactivate the function. A
A
ctiv
ctiv e Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC
ONIC F F
unction of A
unction of A ctiv ctive Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC
ONIC
Ac tive Distance Assist DISTRONIC maintains the
set speed on free-0owing roads. If vehicles in
front are de tected, the set distance is maintained,
if necessar y,until theve hicle comes toa halt. The
ve hicle accelerates or brakes depending on the
distance totheve hicle in front and the set speed.
The speed and distance totheve hicle in front are
set and sa ved using the steering wheel.
Av ailable speed range:
R V
Vehicles wit
ehicles wit hout Dr
hout Driving Assist
iving Assist ance P
ance Pack
ackag
age:
e:
20 km/h - 200 km/h
R V
Vehicles wit
ehicles wit h Dr
h Driving Assist
iving Assist ance P
ance Pack
ackag
age:
e:
20 km/h - 210 km/h Other
features of Active Distance Assist
DISTRONIC:
R Adjusts the driving style depending on the
selected drive prog ram (fuel-saving, comfor ta-
ble or dynamic)
R Initiates acceleration tothe stored speed if the
turn signal indica tor is switched on tochange
to theove rtaking lane
R V
Vehicles wit
ehicles wit h Dr
h Driving Assist
iving Assist ance P
ance Pack
ackag
age:
e:
- Reacts tostationa ryvehicles de tected in
urban speed ranges (e xcept bicycles and
mo torc yc les)
- Take s one-sided overtaking restrictions
into account on mo torw ays or on multi-
lane roads with separate car riag ewa ys
(countr y-dependent)
V
V ehicles wit
ehicles wit h Dr
h Driving Assist
iving Assist ance P
ance P ack
ack ag
age and
e and
P
P ar
ar king P
king P ack
ackag
age:
e: ifth eve hicle has been braked to
a standstill on multi-lane, separate car riag ew ays
by Active Distance Assist DISTRONIC, it can auto-
matical lyfollow theve hicle in front when driving
o. again within 30 seconds. If a critical situation
is de tected when driving o., a visual and acoustic
wa rning is given indicating that the driver must Driving and parking
235 235

now
take cont rol of theve hicle. The vehicle is not
accelerated any fu rther.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 223).
A
A ctiv
ctiv e Dist
e Dist ance Assis
ance Assis t DIS
t DISTR
TRONIC display
ONIC display s in t
s in the
he
Ins
Ins tr
trument Display
ument Display Assis
tance graphic
1 Route-based speed adap tation: type of route
ev ent (/ page 240)
2 Vehicle in front
3 Distance indicator 4
Set speci/ed distance
5 Active Lane Change Assist lane change dis-
play
P
P er
er manent st
manent st atus displa
atus displa y of A
y of Activ
ctive Dist
e Dist ance
ance
Assis
Assis t DIS
t DISTR
TRONIC
ONIC
R k (white): Active Distance Assist
DISTRONIC selected, speci/ed distance set
R k (white vehicle, green speedome ter):
Ac tive Distance Assist DISTRONIC acti ve,
speci/ed dis tance set and vehicle de tected
R k (gre en): Active Distance Assist
DISTRONIC acti ve, speci/ed dis tance set and
ve hicle de tected
R r: Route-based speed adap tation acti ve
( / page 240).
The stored speed is shown along with the perma-
nent status display and highlighted on the speed-
ome ter. When Active Distance Assist DISTRONIC
is passive, the speed is grey ed out.
% On mo torw ays or high-speed major roads, the
gr een ç vehicle symbol is displ ayed cycli-
cally when theve hicle is ready topull away. %
Ifyo u depress the accelerator pedal be yond
th e setting of theAc tive Distance Assist
DISTRONIC, the system is switched topassive
mode. The çsuspended message
appears in the Instrument Displa y.
Displa
Displa y on t
y on the speedomet
he speedomet er
er
The stored speed is highlighted on the speedome-
te r. Ifth e speed of theve hicle in front or the
speed adjustment forth ero ute event ahead is
less than the stored speed, the segments in the
speedome ter light up. The Instrument Display
sho ws th e deactivation of Active Distance Assist
DISTRONIC, as well as alterations tothe speed
due tomanual or automatic adoption of the maxi-
mum permissible speed.
Syst
Syst em limits em limits
The system may be impaired or may not function
in thefo llowing situations, forex ample:
R In sno w,rain, fog, heavy spr ay, if there is glare,
in direct sunlight or in greatly varying light
conditions.
R The windscreen in the area of the camera is
dirty, misted up, damaged or co vered. 236
236
Driving and parking

&
W
W ARNI NG
ARNI NGRisk of an accident due to
Ac tive Distance Assist DISTRONIC being
acti vewhen you lea vethe driver's seat
If yo u lea vethe driver's seat while theve hicle
is being braked byActive Distance Assist
DISTRONIC onl y,theve hicle can rollaw ay. #
Always deacti vate Ac tive Distance Assist
DISTRONIC and secure theve hicle to
pr ev ent it from rolling away before you
lea vethe driver's seat. #
Select Owiththe leT rock er switch.
% Ifyo u brake, deactivate ESP ®
or if ESP ®
inter-
ve nes, Active Distance Assist DISTRONIC is
deactivated.
Incr
Incr easing/decr
easing/decr easing t
easing the st
he stor
ored speed
ed speed #
1 km/h: press roc ker switch 1upM or
down Ntothe pressure point, or press and
hold (increments of 1 km/h).
or #
10 km/h: press rock er switch 1upM or
down Nbeyond the pressure point, or
press and hold (increments of 10 km/h).
or #
Accelerate theve hicle tothe desired speed
and press rock er switch 1upM.
Changing t
Changing t he
hespeci/ed
speci/ed dist
distance t
ance t o t
o the v
he v ehicle in
ehicle in
fr
fr ont
ont #
T
To r
o r educe t
educe t he
hespeci/ed
speci/ed dist
distance:
ance: pressthe
ri ght rock er switch up ( Ñ). #
T To incr o incr ease t
ease t he
hespeci/ed
speci/ed dist
distance:
ance: pressthe
ri ght rock er switch down ( Ò).
F
F unction of A
unction of A ctiv
ctive Speed Limit Assist
e Speed Limit Assist
If a change in the speed limit of 20 km/h or more
is de tected and automatic adoption of speed lim-
its is activated, the new speed limit is automati-
cally adop ted as the stored speed (/ page 252).
The driven speed is adjusted when theve hicle is
le ve l with the tra1c sign at the latest. In the case
of signs indicating entry into an urban area, the
speed is adap ted according tothe speed permit-
te d within the urban area. The speed limit display in
the Instrument Display is alw ays updated when
th eve hicle is le vel with the tra1c sign.
If th ere is no speed restriction on an unlimited
str etch ofroad (e.g. on a mo torw ay),th ere com-
mended speed is automatical lyadop ted as the
stored speed. The system uses the speed stored
on an unlimited str etch ofroad as there commen-
ded speed. If you do not alter the stored speed on
an unlimited str etch ofroad, there commended
speed is 130 km/h.
If Ac tive Distance Assist DISTRONIC has been put
into passive mode bypressing the accelerator
pedal, only speed limits which are higher than the
set speed are adop ted.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 223).
Syst
Syst em limits em limits
The system limits of Tra1c Sign Assist apply to
th e de tection of tra1c signs (/ page 250).
Speed limits below 20 km/h are not automatical ly
adop tedby the system as the stored speed. Tem-
porary speed restrictions (e.g. for a cer tain time
or due towe ather conditions) cann otbe proper ly Driving and parking
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