2021 MERCEDES-BENZ E-CLASS CABRIOLET Owners Manual

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

#
T
To activ
o activ at
at e wit
e wit h a st
h a st or
ored speed:
ed speed: pressJ.
A
A ctiv
ctiv e Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC:
ONIC: remo ve
yo ur foot from the accelerator pedal.
The last stored speed is called up and the
ve hicle main tains this speed (Active Distance
Assist DISTRONIC) or does not exceed it (vari-
able limiter).
If th e stored speed has been dele ted, the cur-
re nt vehicle speed is stored.
% When you switch o. theve hicle, the stored
speed is dele ted. When you activate Active
Distance Assist DISTRONIC, the last speed
stored forth eva riable limi ter is dele ted.
Incr
Incr easing or r
easing or r educing t
educing the speed
he speed #
Toincrease the stored speed: swipe upwards
from the bottom of control panel 1.
R The stored speed is increased by1 km/h. #
Todecrease the stored speed: swipe down-
wa rds from theto p of control panel 1.
R The stored speed is decreased by1 km/h.
or #
Brie0y press Monthe upper section or
N onthe lo wer section of control panel
1.
The stored speed is increased or reduced by
10 km/h.
or #
Press and hold Monthe upper section or
N onthe lo wer section of control panel
1.
The stored speed is increased or reduced in
increments of 10 km/h.
or #
Accelerate theve hicle tothe desired speed. #
Press Monthe upper section of control
panel 1.
A A dop
dop ting t
ting t he limit speed sho
he limit speed sho wn in t
wn in the ins
he instrtrument
ument
clust
clust er
er #
Activate Active Distance Assist DISTRONIC. #
Press J.
The limit speed displa yed in the inst rument
cluster is adop ted as the stored speed. The ve
hicle adapts its speed tothat of theve hicle
in front, but only up tothe stored speed.
Pulling awa
Pulling away wit
y wit h A
h Activ
ctiv e Dist
e Dist ance Assi st
ance Assist
DIS
DIS TR
TRONIC
ONIC #
Activate Active Distance Assist DISTRONIC
and remo ve yo urfoot from the brake pedal. #
Press J.
or #
Depress the accelerator pedal brie0y and
/rml y.
The functions of Active Distance Assist
DISTRONIC continue tobe car ried out.
R
R educing or incr
educing or incr easing t
easing the
he speci/ed
speci/ed dist
distance
ance
fr
fr om t
om t he v
he vehicle in fr
ehicle in fr ont
ont #
Press K.
The h display appears. The speci/ed dis-
ta nce is reduced byone le vel.
If th e lo west le vel is already selected, the
selection jumps tothe highest le vel. Driving and parking
199
199

Deactiv
Deactiv
ating A
ating Activ
ctive Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC or
ONIC or
t
t he v
he v ar
ariable limit
iable limit er
er &
W
WARNING
ARNING Risk 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. #
Press ±.
% Ifyo u brake, deactivate ESP ®
or if ESP ®
inter-
ve nes, Active Distance Assist DISTRONIC is
deactivated. The variable limi ter is not deacti-
va ted.
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 211).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 183). Syst
Syst em limits em limits
The system limits of Tra1c Sign Assist apply to
th e de tection of tra1c signs (/ page 210).
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
de tected bythe system. The maximum permissi-
ble speed applying toave hicle with a trailer is not
de tected bythe system.
Ad just the speed in these situations. &
W
WARNING
ARNING Risk of accident due toActive
Speed Limit Assist ada pting theve hicle's
speed
The speed adop tedby Active Speed Limit
Assist may be too high or incor rect in some
individual cases, such as:
R at speed limits below 20 km/h
R inwe t conditions or in fog
R when towing a trailer 200
200
Driving and parking

#
Ensure that the driven speed complies
with tra1c regulations. #
Adjust the driving speed tosuit cur rent
tra1c and weather conditions. F
F
unction of r
unction of r out
oute-based speed adapt
e-based speed adapt ation
ation
When Active Distance Assist DISTRONIC is acti va-
te d, theve hicle speed will be adap ted accordingly
to thero ute events ahead. Depending on the drive
prog ram selected, theve hicle neg otiates a route
ev ent ahead in an economical, comfor table or
dynamic manner. When thero ute event has been
passed, theve hicle accelerates again tothe
stored speed. The set distance totheve hicle in
front, vehicles de tected ahead and speed restric-
tions ahead are take n into account.
Yo u can activate and deactivate route-based
speed adap tation in the multimedia system
(/ page 202).
The following route events are take n into account:
R Bends
R T-junctions, roundabouts and toll stations
R Turns and exits R
Tra1c jams ahead (only with Live Tra1c Infor-
mation )
% When theto ll station is reached, Active Dis-
ta nce Assist DISTRONIC ado ptsth e speed as
th e stored speed.
Also, the speed is reduced if the turn signal indi-
cator tochange lanes is switched on and one of
th efo llowing situations is de tected:
R Turning o. at junctions
R Driving on slowing-down lanes
R Driving on lanes adjacent toslowing-down
lanes
The driver is responsible forch oosing theright
speed and observing other road users. This
applies in particular tojunctions, roundabouts and
tra1c lights, as route-based speed adap tation
does not brake theve hicle toa standstill.
When route guidance is active, the /rst speed
adjustment is car ried out automaticall y.Ifth e turn
signal indicator is switched on, the selected route
is con/rmed and fur ther speed adjustment is acti-
va ted. Speed adap
tation is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched o.
before thero ute event.
R Ifth e driver depresses the accelerator or
brake pedal during the process.
Syst Syst em limits em limits
Ro ute-based speed adap tation does not take right
of wa yre gulations into account. The driver is
re sponsible for complying with road tra1c regula-
tions and driving at a suitable speed.
The speed ada ptation made bythe system may
not alw ays be suitable, particular lyin thefo llowing
situations:
R thero ad's course not clear lyvisible
R road nar rowing
R varying maximum permissible speeds in indi-
vidual lanes, forex ample at toll stations
R wetro ad sur faces, snow or ice
R when towing a trailer
In these situations the driver must inter vene
accordingl y. Driving and parking
201
201

&
W
WARNI NG
ARNI NGRisk of accident in spi teof
ro ute-based speed adap tation
Ro ute-based speed adap tation can malfunc-
tion or be temp orarily una vailable in thefo l-
lowing situations:
R Ifth e driver does not follow the calculated
ro ute
R If map data is not up-to-date or available
R Intheev ent of roadwor ks
R In bad weather or road conditions
R Ifth e accelerator pedal is depressed
R Intheev ent of electronically displa yed
speed limi tations #
Adapt the speed tothe tra1c situation. Se Se
tting r
tting r out
oute-based speed adapt
e-based speed adapt ation
ation
R R eq
eq uir
uir ements:
ements:
R Active Distance Assist DISTRONIC is acti va-
te d.
R ECO Assist is active. Multimedia system:
4 © 5
Settings 5
Assistance
5 Route-based speed adapt. #
Activate or deactivate the function.
When the function is active, theve hicle speed
is adjusted depending on thero ute events
ahead.
% Further information on the route-based speed
adap tation (/ page 201).
F
F unction of A
unction of A ctiv
ctive
eTr
Tra1c
a1c Jam Assist
Jam Assist
Ac tive Tra1c Jam Assist helps you when in tra1c
jams on multi-lane roads with separate car riage-
wa ys by automatically pulling away within 60 sec-
onds and with mode rate stee ring manoeuvres. It
orients itself using theve hicle in front and lane
markings. Active Tra1c Jam Assist automatically
main tains a safe distance from theve hicle in front
and vehicles cutting in.
Ac tive Tra1c Jam Assist requ ires you, as the
driver, tokeep your hands on the steering wheel
at all times so that you are able tointer vene at
any time tocor rect the course of theve hicle and
ke ep it in lane. Obser vethe no tes on driving sys- te
ms and your responsibility; you may otherwise
fa ilto recognise dangers (/ page 183).
Ac tive Tra1c Jam Assist activates automatically as
soon as all of there qu irements are met: The ¬
status display appears in the inst rument clus ter
when the function is active.
Re quirements:
R You are in a tra1c jam on a mo torw ay or high-
speed major road.
R Active Distance Assist DISTRONIC is acti vated
and active (/ page 198).
R Active Brake Assist is available (/ page 205).
R Active Steering Assist is activated and active
(/ page 204).
R Active Tra1c Jam Assist is activated
(/ page 203).
R You are tr avelling no faster than 60 km/h.
Syst
Syst em limits
em limits
The system limi tations of Active Distance Assist
DISTRONIC and Active Steering Assist apply to
Ac tive Tra1c Jam Assist. 202
202
Driving and parking

A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating A
ating Activ
ctive
eTr
Tra1c
a1c Jam Assist
Jam Assist
Multimedia system:
4 © 5
Settings 5
Quick access #
Select ¬. A
A
ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist F
F
unction of A
unction of A ctiv
ctiveSt
e St eer
eer ing Assist
ing Assist
Ac tive Steering Assist is only available up to a
speed of 210 km/h. The system helps youto stay
in the centre of the lane bymeans of moderate
steering inter ventions. Depending on the speed
driven, Active Steering Assist uses theve hicles
ahead and lane markings as a refere nce.
% Depending on the countr y,in the lo wer speed
ra nge Active Steering Assist can use the sur-
ro unding tra1c as a refere nce. If necessar y,
Ac tive Steering Assist can then also pr ovide
assistance when driving outside the centre of
th e lane, forex ample, toform are scue lane.
If th e de tection of lane markings and vehicles
ahead is impaired, Active Steering Assist switches
to passive mode. The system pr ovides no support
in this case. S
S t
tatus displa
atus displa y of A
y of Activ
ctiveSt
e St eer
eer ing Assis
ing Assist in t t in the
he
Ins
Instr trument Display
ument Display
R Ø (gre y): acti vated and passive
R Ø (gre en): activated and active
R Ø (red): system limits de tected
R Ø (white, red hands): "hands on the steer-
ing wheel" prom pt
% During the transition from active topassive
status, theØ symbol is shown as enlar ged
and 0ashing. Once the system is passive, the
Ø symbol is shown as grey inthe Instru-
ment Displa y.
% Depending on the selected vehicle settings,
Ac tive Steering Assist may be una vailable.
St
St eer
eer ing and t
ing and t ouc
ouch det
h det ection
ection
The driver is requ ired tokeep their hands on the
stee ring wheel at all times and be able tointer-
ve ne at any time tocor rect the course of theve hi-
cle and keep it in lane. The driver must expect a
ch ange from active topassive mode or vice versa
at any time. If
th e system de tects that the driver has not
steered theve hicle for a considerable period of
time or has remo vedth eir hands from the steering
wheel, display 1appears. If the driver still does
not steer theve hicle, a warning tone sounds in
addition tothe visual warning message.
If th e driver does not react tothewa rning for a
considerable period, the system can initiate an
emer gency stop (/ page 205).
If th e driver steers, no warning is issued, or the
wa rning is ended.
If Ac tive Steering Assist de tects that a system
limit has been reached, a visual warning is issued
and a warning tone sounds. Driving and parking
203
203

Obser
vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 183).
Syst
Syst em limits
em limits
Ac tive Steering Assist has a limited steering tor-
qu efo r lateral guidance. In some cases, the steer-
ing inter vention is not su1cient tokeep theve hi-
cle in the lane or todrive thro ugh exits.
The system may be impaired or may not function
in thefo llowing instances:
R There is poor visibility, e.g. due tosno w,rain,
fo g, heavy spr ay,gr eatly varying light condi-
tions or strong shadow s onthe car riag ewa y.
R There is glare, e.g. from oncoming tra1c,
di re ct sunlight or re0ections.
R Insu1cient road illumination.
R The windscreen is dirty, mis ted up, damaged
or co vered in the vicinity of the camera, e.g.
by a stic ker.
R No, or se veral, unclear lane markings are pres-
ent for one lane, or the markings change
qu ickl y,forex ample, in a construction area or
junctions. R
The lane markings are wornawa y,dark or co v-
ered up, e.g. bydirt or sno w.
R Ifth e distance totheve hicle in front is too
short and thus the lane markings cannot be
de tected.
R The road is nar row and winding.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
The system does not pr ovide assistance in thefo l-
lowing conditions:
R On tight bends and when turning.
R When crossing junctions.
R Atroundabouts or toll stations.
R When towing a trailer.
R When the tyre pressure is too lo w. &
W WARNI NG
ARNI NGRisk of accident if Active Steer-
ing Assist unexpectedly stops functioning
If th e system limits of Active Steering Assist
are reached there is no guarantee that the
system will remain active or will keep theve hi-
cle in lane. #
Alwayske ep your hands on the steering
wheel and obser vethe tra1c carefull y. #
Always steer theve hicle paying attention
to tra1c conditions. &
W
WARNI NG
ARNI NGRisk of accident if Active Steer-
ing Assist unexpectedly inter venes
The de tection of lane markings and objects
may malfunction and cause unexpected steer-
ing inter ventions. #
Steer according totra1c conditions. A A
ctiv
ctiv ating/deactiv
ating/deactiv ating A
ating Activ
ctiveSt
e St eer
eer ing Assist
ing Assist
R
R eq
eq uir
uir ements:
ements:
R ESP ®
is activated, but is not inter vening.
R Active Distance Assist DISTRONIC is acti va-
te d.
Multimedia system: 4 © 5
Settings 5
Quick access #
Select aAct. Steer. Asst .204
204
Driving and parking

F
F
unction of A
unction of A ctiv
ctive Emerg
e Emerg encySt
ency Stop Assist
op Assist If
th e system de tects that the driver has not
steered theve hicle for a considerable period of
time or has remo vedth eir hands from the steering
wheel, display 1appears in the Instrument Dis-
pla y.Ifth e driver still does not steer theve hicle,
or gives no con/rmation tothe system, a warning
to ne sounds in addition tothe visual warning mes-
sage.
If th e driver still does not respond tothewa rning,
th eBeginning emergency stop message appears
in the Instrument Displa y.Ifth e driver still does
not respond, Active Distance Assist DISTRONIC re
duces the speed. The vehicle is decelerated in
stages toa standstill.
Depending on the countr y,at speeds below
60 km/h the hazard warning lights switch on
automaticall y.
When theve hicle is stationar y,thefo llowing
actions are car ried out:
R The vehicle is secured with the electric par k-
ing brake.
R Active Distance Assist DISTRONIC is ended.
R The vehicle is unloc ked.
R If possible, an emer gency call is placed tothe
Mercedes-Benz eme rgency call centre.
The driver can cancel the deceleration at any time
by per form ing one of thefo llowing actions:
R Steering
R Braking or accelerating
R Deactivating Active Distance Assist
DISTRONIC A A
ctiv
ctiv e Br
e Br ak
ake Assist
e Assist F
F
unction of A
unction of A ctiv
ctive Br
e Br ak
ake Assist
e Assist
Ac tive Brake Assist consists of thefo llowing func-
tions:
R Distance warning function
R Autonomous braking function
R Situation-dependent braking assistance
R V
Vehicles wit
ehicles wit h Dr
h Driving Assist
iving Assist ance P
ance Pack
ackag
age:
e: Eva-
sive Steering Assist and cornering function
Ac tive Brake Assist can help youto minimise the
ri sk of a collision with vehicles, cyclists or pedes-
trians or toreduce the e.ects of such a collision.
If Ac tive Brake Assist has de tected a risk of colli-
sion, a warning tone sounds and theL dis-
ta nce warning lamp lights up in the inst rument
cluster.
If yo u do not react tothewa rning, autonomous
braking can be initiated in critical situations.
In especially critical situations, Active Brake Assist
can initiate autonomous braking directl y.In this
case, thewa rning lamp and warning tone occur
simultaneously with the braking application. Driving and parking
205 205