brake sensor MERCEDES-BENZ E-CLASS CABRIOLET 2021 Owners Manual

Mer
Mer
cedes-Benz GenuineP
cedes-Benz GenuineP ar
arts
ts
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmental
damage caused bynot using recycled
re conditioned components Mercedes‑Benz
AGo.ers recycled recondi-
tioned components and parts with the same
qu ality as new parts. The same entitlement
from the implied warranty is valid as for new
parts. #
Recycled reconditioned components and
parts from Mercedes‑Benz AG.*
N
N O
OTE
TE Impai rment of the operating e1-
ciency of there straint systems from
installing accessor y parts or fromrepairs
or we lding Airbags and seat belt
tensioners, as well as
control units and sensors forth ere straint sys-
te ms, may be ins talled in thefo llowing areas
of your vehicle:
R Doors R
Door pillars
R Door sills
R Seats
R Cockpit
R Instrument clus ter
R Centre console
R Lateral roof frame #
Do not ins tall accessory parts such as
audio systems in these areas. #
Do not car ryout repairs or welding. #
Have accessory parts retro/tted at a
qu ali/ed specialist workshop. Yo
u could jeopardise the operating saf ety of your
ve hicle if you use parts, tyres and wheels as well
as accessories releva nt tosaf ety which ha venot
been app rove dby Mercedes-Benz. Saf ety-re leva nt
systems, e.g. the brake system, may malfunction.
Only use Mercedes-Benz GenuineParts or parts of
equal qualit y.Only use tyres, wheels and acces-
sory parts that ha vebeen speci/cally appr oved
fo ryo ur vehicle model. Mercedes-Benz
tests original pa rts and con ver-
sion parts and accessory parts that ha vebeen
speci/cally appr ovedfo ryo ur vehicle model for
th eir reliability, saf ety and suitability. Despite
ongoing mar ketre sear ch, Mercedes-Benz is
unable toassess other parts. Mercedes-Benz
th erefore accepts no responsibility forth e use of
such parts in Mercedes-Benz vehicles, even if
th ey have been o1cially appr oved or independ-
ently appr ovedby ate sting centre.
Ce rtain parts are only o1cial lyappr ovedfor
installation or modi/cation if they comply with
legal requ irements. All Mercedes-Benz Genuine-
Pa rts meet the appr oval requ irements. The use of
non-appr oved parts may in validate theve hicle's
ge neral ope rating permit.
This is the case in thefo llowing situations:
R The vehicle type is di.erent from that for
which theve hicle's general ope rating permit
wa sgr anted.
R Other road users could be endangered.
R The exhaust gas or noise le velget swo rse. General no
tes
21 21

R
ambient conditions, such as temp erature, rain
sensor or distance sensor
Generall y,the use of these data is temp orar y;
th ey will not be stored be yond the period of oper-
ation and will only be processed within theve hicle
itself. Control units oTen contain data memories
fo rve hicle keys,fo rex ample. Their use permits
th ete mp orary or permanent documentation of
te ch nical information about theve hicle's operat-
ing state, component loads, main tenance requ ire-
ments and tech nical events or faults.
Depending on theve hicle equipment, thefo llo w-
ing data are stored:
R operating status of system components, such
as /ll le vels, tyre pressure or battery status
R malfunctions or faults in impor tant system
components, such as lights or brakes
R system reactions in special driving situations,
such as airbag depl oyment or the inter vention
of stability cont rol systems
R information on events leading tovehicle dam-
age In cer
tain cases, it may be requ ired tostore da ta
th at wo uld ha veotherwise been used only temp o-
rari ly. This may be the case if theve hicle has
de tected a malfunction, forex ample.
If yo u use services, such as repair services and
maintenance work, stored operational data as
we ll as theve hicle identi/cation number can be
re ad out and used. They can be read out by
service network emplo yees, such as workshops
and manu facturers or third parties, such as break-
down services. The same is true in the case of
wa rranty claims and quality assurance measures.
In general, there adout is per form ed via the legally
prescribed port forth e diagnostics connection in
th eve hicle. The operational data that are read out
document tech nical states of theve hicle or of
individual components and assist in the diagnosis
of malfunctions, compliance with warranty obli ga-
tions and quality impro vement. Tothat end, these
data, in particular information about component
loads, tech nical events, malfunctions and other
fa ults may be transmitted along with theve hicle
identi/cation number tothe manufacturer. Fur-
th ermore, the manufacturer is subject toproduct
liability. Forth is reason the manufacturer also uses operational data from
theve hicle, forex am-
ple, forre calls. These data can also be used to
ex amine the customer's warranty and guarantee
claims.
Fa ult memories in theve hicle can be reset by a
service outl etor at your requ est as part of repair
or maintenance work.
Conv
Conv enience and inf ot
enience and inf otainment functions ainment functions
Yo u can store con venience settings and individual
settings in theve hicle and change or reset them
at any time.
Depending on theve hicle equipment, this
includes thefo llowing settings, forex ample:
R seat and steering wheel positions
R suspension and climate cont rol settings
R individual settings, such as interior lighting
Depending on the selected equipment, you can
import data into vehicle inf otainment functions
yo urself. 36 36
General no
tes

Please also obser
vethefo llowing running-in
no tes:
R In cer tain driving and driving saf ety sy stems,
th e sensors adjust automatically while a cer-
ta in distance is being driven aTer theve hicle
has been deli vered or aTer repairs. Full sys-
te m e.ectiveness is not reached until the end
of this teach-in process.
R Brakepads, brake disks and tyres that are
either new or ha vebeen replaced only achie ve
optimum braking e.ect and grip aTer se veral
hund red kilometres of driving. Compensate for
th ere duced braking e.ect byapplying greater
fo rc eto the brake pedal. N
No
ot
tes on op
es on op timised acceler
timised acceler ation
ation If all necessary
requ irements and activation con-
ditions are ful/lled, the best possible acceleration
can be achie ved from a standstill.
Do not use the optimised acceleration on public
ro ads. Individual wheels could spin and you could
lose control of theve hicle. There is an increased
ri sk of skidding and/or accident. Be sure
toobser vethe saf ety no tes and informa-
tion on ESP ®
(/ page 186). Mo
Mo
ving awa
ving away wit
y wit h op
h optimised acceler
timised acceler ation
ation &
W
WARNING
ARNING Risk of skidding and having an
accident from wheels spinning
When you use optimised acceleration, individ-
ual wheels could spin and you could lose con-
trol of theve hicle.
If ESP ®
is deactivated, there is a risk of skid-
ding and accident! #
Make sure that no persons or obs tacles
are in the close vicinity of your vehicle. R
R
eq
eq uir
uir ements:
ements:
R theve hicle is run in (/ page 156).
R theve hicle and tyres are in good condition.
R you are on a high-g rip ro adw ay.
R the engine and transmission are at normal
operating temp erature. *
N
NO OTE
TE Increased wear due tooptimised
acceleration When pulling
away with optimised accelera-
tion, all components of the driv etra in are sub-
jected toave ry high load.
This can lead toincreased component wear. #
Do not alw ays pull away with optimised
acceleration. #
Engage theh drive position (/ page 169). #
Movethe steering wheel tothe straight-ahead
position. #
Select the sportiest available drive prog ram
B orC(/ page 166). #
Deactivating ESP ®
(/ page 188). #
Depress and hold the brake pedal /rmly with
yo ur leT foot. #
With your right foot , fully depress the acceler-
ator pedal. Driving and parking
157
157

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.
R Ifth era dar sensors are dirty or co vered.
R In multi-s tore y car par ksor on roads with
steep uphill or downhill gradients.
R Ifth ere are nar row vehicles in front, such as
bicycles or mo torc yc les.
In addition, on slippery roads, braking or acceler-
ating can cause one or se veral wheels tolose
traction and theve hicle could then skid. Do not use
Active Distance Assist DISTRONIC in
th ese situations. &
W
WARNING
ARNING Risk of accident from accelera-
tion or braking byActive Distance Assist
DISTRONIC
Ac tive Distance Assist DISTRONIC may accel-
erate or brake in thefo llowing cases, for
ex ample:
R Ifth eve hicle pulls away using Active Dis-
ta nce Assist DISTRONIC.
R Ifth e stored speed is called up and is con-
siderably faster or sl owerth an the cur-
re ntly driven speed.
R IfAc tive Distance Assist DISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. #
Always carefully obser vethe tra1c con-
ditions and be ready tobrake at all
times. #
Take into account the tra1c situation
before calling up the stored speed. &
W
WARNING
ARNING Risk of accident due toinsu1-
cient deceleration byActive Distance
Assist DISTRONIC
Ac tive Distance Assist DISTRONIC brakes your
ve hicle with up to50% of the possible deceler-
ation. If this deceleration is not su1cient,
Ac tive Distance Assist DISTRONIC alerts you
with a visual and acoustic warning. #
Adjust your speed and maintain a suita-
ble distance from theve hicle in front. #
Brake theve hicle yourself and/or take
ev asive action. &
W
WARNING
ARNING Risk of accident if de tection
function of Active Distance Assist
DISTRONIC is impaired
Ac tive Distance Assist DISTRONIC does not
re act or has a limi tedre action:
R when driving on a di.erent lane or when
changing lanes Driving and parking
197 197

R
topedest rians, animals, bicycles or sta-
tionary vehicles, or unexpected obs tacles
R tocomplex tra1c conditions
R tooncoming vehicles and crossing tra1c
As a result, Active Distance Assist DISTRONIC
may neither give warnings nor inter vene in
such situations. #
Always obser vethe tra1c conditions
carefully and react accordingl y.Oper
Oper
ating A
ating A ctiv
ctive Dist
e Dist ance Assis
ance Assis t DIS
t DISTR
TRONIC and
ONIC and
t
t he v
he v ar
ariable limit
iable limit er
er
R
R eq
eq uir
uir ements:
ements:
Ac tive Distance Assist DISTRONIC:
R The electric parking brake is released.
R ESP ®
is activated and is not inter vening.
R The transmission is in position h.
R Allthe doors are closed.
R Check of thera dar sensor system has been
successfully comple ted. Va
riable limi ter:
R The variable limi ter is selected. J
Adopts the stored/de tected speed
± Deacti vatesth eva riable limi ter/Active Dis-
ta nce Assist DISTRONIC
1 Increases/decreases the speed K
Increases/decreases the speci/ed distance
I Switches between theva riable limi ter and
Ac tive Distance Assist DISTRONIC #
T
To oper
o oper at
ate A
e A ctiv
ctiv e Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC
ONIC
or t
or t he v
he v ar
ariable limit
iable limit er
er :
:press there specti ve
button with only one /nger or swipe on the
cont rol panel.
Switc
Switc hing be
hing be tw
tween t
een t he v
he var
ariable limit
iable limit er and A
er and Active
ctive
Dist
Dist ance Assis
ance Assist DIS t DISTR
TRONIC
ONIC #
Press I.
A
A ctiv
ctiv ating t
ating t he v
he var
ariable limit
iable limit er or A
er or Activ
ctive Dist
e Dist ance
ance
Assis
Assist DIS t DISTR
TRONIC
ONIC #
T
To activ
o activ at
ate wit
e wit hout a st
hout a st or
ored speed:
ed speed: press
M, NorJ. A Activ
ctiv e Dist
e Dist ance Assis
ance Assist t
DIS
DIS TR
TRONIC:
ONIC: remo veyour foot from the accel-
erator pedal.
The cur rent vehicle speed is stored and main-
ta ined (Active Distance Assist DISTRONIC) or
limited (variable limiter) bytheve hicle.
or 198 198
Driving and parking

Moreo
ver,th e steering support pr ovided by
Evasive Steering Assist is not su1cient to
avo id a collision. #
Always pay careful attention tothe tra1c
situation; do not relyon Evasive Steering
Assist alone. #
Be prepared tobrake or swer veif neces-
sar y. #
End the support byactively steering in
non-critical situations. #
Drive at an appropriate speed if there
are pedestrians close tothe path of your
ve hicle. Syst
Syst
em limits
em limits
Fu ll system per form ance is not yetav ailable for a
few seconds aTer switching on theve hicle or aTer
driving o..
If Ac tive Brake Assist is impaired or inoperative
due toa malfunction, theÄ warning lamp
appears in the Instrument Displa y. The system may be impai
red or may not function,
particular lyin thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is glare,
in direct sunlight or in greatly varying light
conditions.
R Ifth e sensors are dirty, misted up, damaged or
co vered.
R Ifth e sensors are impaired due tointer fere nce
from other radar sources, e.g. strong radar
re 0ections in multi-s tore y car par ks.
R If a loss of tyre pressure or a defecti vetyre
has been de tected and displa yed.
R In complex tra1c situations where objects
cannot alw ays be clear lyidenti/ed.
R If pedestrians or vehicles mo vequickly into
th e sensor de tection range.
R If pedestrians are hidden by other objects.
R Ifth e typical outline of a pedestrian cannot be
distinguished from the backg round.
R If a pedestrian is not de tected as such, e.g.
due tospecial clo thing or other objects.
R Ifth e driver's seat belt is not fastened. R
On bends wi tha tight radius.
% The Active Brake Assist sensors adjust auto-
matical lywhile a cer tain distance is being
driven aTer theve hicle has been deli vered.
Ac tive Brake Assist is una vailable or only par-
tially available during thete ach-in process.
A
A ctiv ctiv ating/deactiv
ating/deactiv ating A
ating Activ
ctive Br
e Br ak
ake Assist
e Assist
R
R eq
eq uir
uir ements:
ements:
R The vehicle is switched on.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Active Brake Assist #
Select the desired setting.
The setting is retained when the drive system
is next star ted.
Deactiv
Deactiv ating A
ating Activ
ctive Br
e Br ak
ake Assist
e Assist
% It is recommended that you alw ays lea ve
Ac tive Brake Assist acti vated. Driving and parking
209
209

&
W
W ARNI NG
ARNI NGRisk of accident despite exit
wa rning
The exitwa rning neither reacts tostationa ry
objects nor topersons or road users
approaching you at a greatly di.ering speed.
The exitwa rning cannot warndrivers in these
situations. #
Always pay particular attention tothe
tra1c situation when opening the doors
and make sure there is su1cient clear-
ance. If
th ere is a vehicle in the monitoring range, this is
indicated in the outside mir ror.If a vehicle occu-
pant opens the door on the side with thewa rning,
a wa rning tone sounds and thewa rning lamp in
th e outside mir ror starts to0ash.
This additional function is on lyavailable when
Blind Sp otAssist is active. When theex itwa rning
is activated, it can warnvehicle occupants for up
to thre e minutes aTer switching theve hicle o..
The exitwa rning is no longer available once the
wa rning lamp in the outside mir ror 0ashes three
times. The
exitwa rning is only an aid and not a substi-
tute forth e attention of vehicle occupants. The
re sponsibility for opening and closing the doors
and for leaving theve hicle remains with theve hi-
cle occupants.
Syst
Syst em limits em limits
Blind Spot Assist and Active Blind Spot Assist may
be limited in thefo llowing situations, in particular:
R ifth ere is dirt on the sensors or the sensors
are obscured
R in poor visibility, e.g. due tofog, heavy rain or
snow
R ifth ere are nar row vehicles, e.g. bicycles or
mo torbikes
R ifth ero ad has very wide or nar row lanes
R ifve hicles are not driving in the middle of their
lane
Wa rnings may be issued in er ror when driving
close tocrash bar riers or similar continuous lane
borders. Alw ays make sure that there is su1cient
distance tothe side forot her tra1c or obs tacles. Wa
rnings may be inter rupted when driving along-
side long vehicles, forex ample lor ries, for a pro-
longed time.
Blind Spot Assist is not operational when reve rse
ge ar is engaged.
Blind Sp otAssist and theex itwa rning are not
operational when a trailer is coupled totheve hi-
cle and the electrical connection has been cor-
re ctly es tablished.
The exitwa rning may be limited in thefo llowing
situations:
R when the sensors are co veredby adjacent
ve hicles in nar row parking spaces
R when people approach theve hicle
R intheev ent of stationary or slo wlymoving
objects
F
F unction of br unction of br ak
ake application (A
e application (A ctiv
ctive Blind Spot
e Blind Spot
Assis
Assis t)
t)
If Ac tive Blind Spot Assist de tects a risk of a side
impact in the monitoring range, a cou rse-cor rect-
ing brake application is car ried out. This is
designed tohelp youavo id a collision. Driving and parking
213
213

R
Ifth e lane markings are worn, dark or co v-
ered.
R Ifth e distance totheve hicle in front is too
short and thus the lane markings cannot be
de tected.
R Ifth e lane markings change quickl y,e.g. lanes
branch o., cross one ano ther or mer ge.
R Ifth e car riag ew ay isvery nar row and winding.
R V
Vehicles wit
ehicles wit h Dr
h Driving Assist
iving Assist ance P
ance Pack
ackag
age:
e: if
th era dar sensors in there ar bumper are dirty
or co vered in snow and an obstacle is de tec-
te d in your lane, no lane-cor recting brake
application take s place.
A
A ctiv
ctiv ating/deactiv
ating/deactiv ating A
ating Activ
ctive Lane K
e Lane K eeping
eeping
Assist
Assist
Multimedia system:
4 © 5
Settings 5
Quick access
5 Active Lane Keeping Assist #
Activate or deactivate the function. Se Se
tting A
tting A ctiv
ctive Lane K
e Lane K eeping Assist
eeping Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Active Lane Keeping Assist
Se
Se tting t
tting t he sensitivity
he sensitivity
% The availability of this function is dependent
on the countr y. #
Select Standard, SensitiveorOff.
A
A ctiv
ctiv ating or deactiv
ating or deactiv ating t
ating the hap
he hap tic w
tic war
arning
ning #
Select Warning .
Ac tivate or deactivate the function. D
D
YN
YNAMIC BOD AMIC BOD Y C
Y CONTR
ONTR OL function
OL function DY
NAMIC BODY CONTROL continuous lyadjusts
th ech aracteristics of the suspension dampers to
th e cur rent ope rating and driving conditions.
The damping is tuned individually for each wheel
and is a.ected bythefo llowing factors:
R The road sur face conditions
R Vehicle load
R The drive prog ram selected R
The driving st yle
The drive prog ram can be adjus ted using the
DY NAMIC SELECT switch. AIR BOD
AIR BOD
Y C
Y CONTR
ONTR OL
OL AIR BOD
AIR BOD
Y C
Y CONTR
ONTR OL function
OL function
* NO
NOTE
TEMercedes -AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. AIR BODY
CONTROL is an air suspension system
with variable damping for impr oved driving com-
fo rt. The all-round le vel control system ensures
th e best possible suspension and constant ground
clearance, even with a laden vehicle. When driving
at speed, theve hicle is lo wered automatically to
impr ovedriving saf ety and toreduce fuel con-
sum ption. You also ha vethe option of manually
adjusting theve hicle le vel. Driving and parking
217
217

Switc
Switc
hingrev
hing rever
ersing camer
sing camer a aut
a automatic mode
omatic mode
on/o.
on/o.
The reve rsing camera is only an aid. It is not a
substitute foryo ur attention tothe sur roundings.
The responsibility for safe manoeuvring and par k-
ing remains with you. Make sure that no persons,
animals or objects etc. are in the manoeuvring
ra nge. Pay attention toyour sur roundings and be
re ady tobrake at all times.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Camera & parking #
Switch Auto reversing camera on or o..
Opening t Opening t he camer
he camera cov
a cover of t
er of t herev
he rever
ersing cam-
sing cam-
era
era
Multimedia system:
4 © 5
Settings 5
Assistance
5 Camera & parking #
Select Open camera cover.
% The camera co ver closes automatically aTer
some time or aTer an ignition cycle. P P
ar
ar king Assis
king Assist P t PARK
ARK TR
TRONIC
ONIC F
F
unction of P
unction of P ar
arking Assis
king Assist P t PARK
ARK TR
TRONIC
ONIC
Pa rking Assist PARKTRONIC is an electronic par k-
ing assistance system which monitors the area
sur rounding your vehicle and sho wsyouth e dis-
ta nce between theve hicle and a de tected obs ta-
cle visual lyand audib ly.
Pa rking Assist PARKTRONIC is only an aid. It is
not a substitute foryo ur attention tothe sur round-
ings. The responsibility for safe manoeuvring and
parking remains with you. Make sure that there
are no persons, animals or objects in the manoeu-
vring area while manoeuvring and parking in/exit-
ing parking spaces.
The passive side impact pr otection also warnsyou
of obstacles tothe side. During the parking proce-
dure or manoeuvring, objects are de tected as the
ve hicle drives past. If you steer in the direction of
a de tected obs tacle and there is a risk of a lateral
collision, a warning is issued. In order for an
object on the side tobe de tected, the sensors in
th e front and rear bumper must /r stdetect the
object while you are driving past it. In order
for front or rear obs tacles tothe side to
be displa yed, theve hicle must /r sttrave l a dis-
ta nce of at least half a vehicle length. Once the
ve hicle has tr avelled one vehicle length, obs tacles
on all sides can be shown.
Display
Display s in t s in the media display
he media display Ve
hicles with 360° Camera Driving and parking
227
227

#
Be prepa redto brake or swer veas nec-
essar y,prov ided the tra1c situation per-
mits and that it is safe totake evasive
action. Drive
Away Assist is only an aid. It is not a substi-
tute foryo ur attention tothe sur roundings. The
re sponsibility for safe manoeuvring and parking
re mains with you. Make sure that no persons, ani-
mals or objects etc. are in the manoeuvring
ra nge.
A risk of collision may occur in thefo llowing situa-
tions, forex ample:
R Ifth e accelerator and brake pedals are inter-
ch anged.
R If an inco rrect transmission position is
engaged.
Drive Away Assist is active under thefo llowing
conditions:
R IfPa rking Assist PARKTRONIC is activated.
R Ifyo u shiT the transmission position tok or
h when theve hicle is stationar y. R
Ifth e de tected obs tacle is less than appr ox.
1.0 m away.
R Ifth e manoeuvring assistance function is acti-
va ted in the multimedia system.
Syst
Syst em limits
em limits
The per form ance of Drive AwayAssist is limited
on inclines.
When driving with a trailer, Drive AwayAssist is
not available.
% Also obser vethe system limits of Parking
Assist PARKTRONIC (/ page 227).
F
F unction of Cr unction of Cr oss
ossTr
Tra1c
a1c Alert
Alert
% Cross Tra1c Ale rtis only available forve hicles
with Blind Spot Assist or Active Blind Spot
Assist.
Cross Tra1c Ale rtcan warndrivers of any cross-
ing tra1c when reve rsing and manoeuvring out of
a parking space. The radar sensors in the bumper
also monitor the area adjacent totheve hicle. If a
critical situation is de tected, theL symbol
appears in the media display and theve hicle can
be braked automaticall y. If
th era dar sensors are obstructed byvehicles or
ot her objects, de tection is not possible.
Depending on the countr y,Cross Tra1c Ale rtcan
be deactivated or activated in theManoeuvring
assistance menu (/page 237).
% Also obser vethe inst ructions on Blind Spot
Assist and Active Blind Spot Assist
(/ page 212).
Syst
Syst em limits
em limits
Cross Tra1c Ale rtis not available on inclines.
Cross Tra1c Ale rtis not available when driving
with a trailer.
Manoeuvr Manoeuvr ing br
ing brak
ake function
e function
The manoeuvring brake function can pr event colli-
sions with pedestrians when theve hicle is reve rs-
ing at slow speeds. If there ve rsing camera
de tects a person in theve hicle path, theve hicle
can be braked toa standstill.
The manoeuvring brake function can inter vene
under thefo llowing conditions:
R The vehicle is reve rsing at a speed slo werth an
10 km/h. 236
236
Driving and parking