2020 MERCEDES-BENZ CLS COUPE warning light

Display on
the speedome ter
The stored speed is highlighted on the speedom‐
et er. If the speed of theve hicle in front or the
speed adjustment is less than thestored speed
due tothero ute event ahead, the segments in
th e speedome ter light up. Deactivation of Active
Dis tance Assi stDISTRONIC, as well as altera‐
tions tothe speed due tomanual or auto matic
adoption of the maximum permissible speed, are
displa yed in the control feedback of the multi‐
function display on a single line.
Sy stem limits
The sy stem may be impaired or may not function
in thefo llowing situations, forex ample:
R In sn ow,ra in, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
R The windsc reen in the area of the camera is
dirty, mis ted up, damaged or co vered.
R Ifth era dar sensors are dirty or co vered.
R In multi- stor ey car pa rks or on roads with
st eep uphill or downhill gradients. R
Ifth ere are nar rowvehicles in front, such as
bicycles or mo torcyc les.
In addition, on slippery roads, braking or accel‐
erating can cause one or se veral wheels tolose
traction and theve hicle could then skid.
Do not use Active Dis tance Assi stDISTRONIC in
th ese situations. &
WARNING Risk of accident from acceler‐
ation or braking byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC may accel‐
erate or brake in thefo llowing cases, for
ex ample:
R Ifth eve hicle pulls away using Active Dis‐
ta nce Assi stDISTRONIC.
R Ifth estored speed is called up and is
considerably faster or slo werth an the
cur rently driven speed.
R IfAc tive Dis tance Assi stDISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. #
Alw ays carefully obser vethe traf fic con‐
ditions and be ready tobrake at all
times. #
Take into account the tra ffic situation
before calling up thestored speed. &
WARNING Risk of accident due toinsuf‐
fi cient decele ration byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC brakes
yo ur vehicle with up to50% of the possible
deceleration. If this decele ration is not su ffi‐
cient, Active Dis tance Assi stDISTRONIC
alerts you with a visual and acoustic warning. #
Adjust your speed and main tain a suita‐
ble dis tance from theve hicle in front. #
Brake theve hicle yourself and/or take
ev asive action. 19 2
Driving and pa rking

Also,
the speed is reduced if the turn signal indi‐
cator tochange lanes is swit ched on and one of
th efo llowing situations is de tected:
R Turning off 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 traf fic lights, as route-based speed adap ta‐
tion does not brake theve hicle toast andstill.
When route guidance is active, thefirs t speed
adjustment is car ried out automaticall y.Ifthe
turn signal indica tor is switched on, the selected
ro ute is confirmed and fur ther speed adjustment
is activated.
Speed adap tation is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched off
before thero ute event.
R Ifth e driver depresses the accelerator or
brake pedal during the process. Sy
stem limits
Ro ute-based speed adap tation does not take
ri ght of wayre gulations into account. The driver
is responsible for complying with road traf fic
re gulations and driving at a suitable speed.
The speed adap tation made bythe sy stem may
not alw ays be suitable, particular lyin thefo llow‐
ing situations:
R thero ad's course not clear lyvisible
R road nar rowing
R varying maximum permissible speeds in indi‐
vidual lanes
R wetro ad sur faces, snow or ice
R when towing a trailer
In these situations the driver must inter vene
acco rding ly. &
WARNING Risk 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 calcula‐
te dro ute
R If map data is not up-to-date or available
R Intheeve nt of roadwor ks
R In bad weather or road conditions
R Ifth e accelera tor pedal is depressed
R Intheeve nt of electronical lydispla yed
speed limitations #
Adapt the speed tothe traf fic situation. Setting
route-based speed adaptation
Re quirements:
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
R ECO Assist is active. 19 6
Driving and pa rking

If
th e de tection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches topassive mode. The sy stem pr ovides
no support in this case.
St atus display of Active Steering Assist in
th e multifunction display
R Ø (gre y): activated and passive
R Ø (gre en): activated and active
R Ø (red): sy stem limits de tected
R Ø (white, red hands): "hands on thesteer‐
ing wheel" prom pt
% During the transition from active topassive
st atus, theØ symbol is shown as
enlar ged and flashing. Once the sy stem is
passive, theØ symbol is shown as gr eyin
th e multifunction displa y.
% Depending on the selected vehicle settings,
Ac tive Steering Assist may be una vailable.
Ste ering and touch de tection
The driver is requiredtokeep their hands on the
st eering wheel at all times and be able tointer‐
ve ne at any time tocor rect the course of the
ve hicle and keep it in lane. The driver must ex
pect a change from active topassive mode or
vice versa at any time. If
th e sy stem de tects that the driver has not
st eered theve hicle for a considerable period of
time or has remo vedth eir hands from thesteer‐
ing wheel, display 1appears. If the driver still
does not steer theve hicle, a warning tone
sounds in addition tothe visual warning mes‐
sage.
If th e driver does not react tothis wa rning for a
considerable period, an emergency stop is initi‐
ated (/ page199). The
warning is not issued or is stopped when the
driver gives con firm ation tothe sy stem:
R The driver steers theve hicle.
R Depending on the count ry:th e driver
presses a steering wheel button or operates
To uch Control
If Ac tive Steering Assist de tects that a sy stem
limit has been reached, a visual warning is
issued and a warning tone sounds.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 178).
Sy stem limits
Ac tive Steering Assist has a limited steering tor‐
qu efo r lateral guidance. In some cases, the
st eering inter vention is not su fficient tokeep the
ve hicle in the lane or todrive thro ugh exits.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R The reis poor visibilit y,e.g. due tosno w,rain,
fo g, heavy spr ay, greatly varying light condi‐
tions or strong shado wsonthe car riag ewa y. 19 8
Driving and pa rking

R
There is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections.
R Insuf ficient road illumination.
R The windsc reen is dirty, mis ted up, damaged
or co vered in the vicinity of the camera, e.g.
by ast icke r.
R No, or se veral, unclear lane markings are
present for one lane, or the markings change
qu ickl y,forex ample, in a con stru ction area
or junctions.
R The lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w.
R Ifth e dis tance totheve hicle in front is too
short and thus the lane markings cann otbe
de tected.
R The road is nar rowand winding.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R On tight bends and when turning.
R When crossing junctions. R
Atroundabouts or tollst ations.
R When towing a trailer.
R When the tyre pressure is too lo w. &
WARNING Risk of accident if Active
St eering Assist unexpectedly stops func‐
tioning
If th e sy stem limits of Active Steering Assist
are reached there is no guarantee that the
sy stem will remain active or will keep the
ve hicle in lane. #
Alw ayske ep your hands on thesteering
wheel and obser vethe tra ffic carefull y. #
Alw aysst eer theve hicle paying atten‐
tion totraf fic conditions. &
WARNING Risk of accident if Active
St eering Assist unexpectedly inter venes
The de tection of lane markings and objects
may malfunction and cause unexpected
st eering inter ventions. #
Steer according totraf fic conditions. Ac
tivating/deactivating Active Steering
Assist
Re quirements:
R ESP ®
is activated, but is not inter vening.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
4 © 5
Settings 5
Quick access #
Select aAct. Steer. Asst . Fu
nction of Active Eme rgency Stop Assist Driving and parking
19 9

If
th e sy stem de tects that the driver has not
st eered theve hicle for a considerable period of
time or has remo vedth eir hands from thesteer‐
ing wheel, display 1appears in the multifunc‐
tion displa y.Ifth e driver still does not steer the
ve hicle, or gives no confirmation tothe sy stem,
a wa rning tone sounds in addition tothe visual
wa rning message.
If th e driver still does not respond tothewa rn‐
ing, theBeginning emergency stop message
appears in the multifunction displa y.Ifth e driver
st ill does not respond, Active Dis tance Assi st
DISTRONIC reduces the speed. The vehicle is
decelerated in stages toast andstill.
Depending on the count ry, 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 park‐
ing brake.
R Active Dis tance Assi stDISTRONIC is ended
R The vehicle is unloc ked. R
If possible, an emer gency call is placed to
th e Mercedes-Benz emer gency call centre
The driver can cancel the deceleration at any
time byper form ing one of thefo llowing actions:
R Steering
R Braking or accelerating
R Deactivating Active Dis tance Assi st
DISTRONIC Ac
tive Brake Assi st Fu
nction of Active Brake Assi st
Ac tive Brake Assi stconsi sts of thefo llowing
functions:
R Distance warning function
R Autonomous braking function
R Situation-dependent braking assi stance
R Vehicles with Driving Assistance Pack‐
age: Evasi veSteering Assist and cornering
function
Ac tive Brake Assi stcan help youto minimise the
ri sk of a collision with vehicles, cyclists or pedestrians or
toreduce the ef fects of su ch a
collision.
If Ac tive Brake Assi sthas de tected a risk of colli‐
sion, a warning tone sounds and theL dis‐
tan cewarning lamp lights up in the instrument
clus ter.
Ve hicles with PRE-SAFE ®
:depending on the
countr y,an additional haptic warning occurs in
th efo rm of slight, repeated tensioning of the
seat belt.
If yo u do not react tothewa rning, autonomous
braking can be initiated in critical situations.
In especially critical situations, Active Brake
Assi stcan initia teautonomous braking direct ly.
In this case, thewa rning lamp and warning tone
occur simultaneously wi th the braking applica‐
tion.
If yo u apply the brake yourself in a critical situa‐
tion or apply the brake during autonomous brak‐
ing, situation-dependent braking assis tance
occu rs. The brake pressure increases up tomax‐
imum full-s top braking if necessar y.200
Driving and parking

Obser
vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 178). If autonomous braking or si
tuation-dependent
braking assi stance has occur red, display 1
appears in the multifunction display and then
automatically goes out af ter a short time.
If th e autonomous braking function or the situa‐
tion-dependent braking assis tance is trig gered,
additional pr eventive measu resfo r occupant
pr otection (PRE-SAFE ®
) may also be initiated. &
WARNING Risk of an accident caused by
limited de tection per form ance of Active
Brake Assi st
Ac tive Brake Assi stcannot al ways clear ly
identify objects and complex traf fic situa‐
tions. #
Alw ays pay careful attention tothe traf‐
fi c situation; do not rely on Active Brake
Assi stalone. Active Brake Assi stis only
an aid. The driver is responsible for
maintaining a suf ficiently safe di stance
to theve hicle in front, vehicle speed
and for braking in good time. #
Be prepare dto brake or swer veif nec‐
essar y. Also obser
vethe sy stem limits of Active Brake
Assi st. The individual subfunctions are
available in
va rious speed ranges:
The dis tance warning function can issue a warn‐
ing in thefo llowing situations:
R From appr oximately 30 km/h, if over se veral
seconds the dis tance maintained totheve hi‐
cle tr avelling in front is insuf ficient forthe
driven speed, theL distance warning
lamp lights up in the instrument clus ter.
R From appr oximately 7 km/h, if your vehicle
is critically close toave hicle, cyclist or
pedestrian, you will hear an intermit tent
wa rning tone and theL distance warning
lamp lights up in the instrument clus ter.
Ve hicles with PRE-SAFE ®
:depending on
th e count ry, an additional haptic warning
occurs in thefo rm of slight, repeated ten‐
sioning of the seat belt.
Brake immediately or take evasive action, pr ovi‐
ded it is safe todo so and the tra ffic situation
allo ws th is. Driving and parking
201

speeds below
15km/h be fore you ha veleft the
lane in which you are driving. &
WARNING Risk of accident despi teEva‐
si ve Steering Assist
Evasive Steering Assist cann otalw aysre cog‐
nise objects or compl extraf fic situations
clear ly.
Moreo ver,th esteering support pr ovided by
Evasive Steering Assist is not suf ficient to
avo id a collision. #
Alw ays pay careful attention tothe traf‐
fi c situation; do not rely on Ev asive
St eering Assist alone. #
Be prepared tobrake or swer veif nec‐
essar y. #
End the support byactively steering in
non-critical situations. #
Drive at an appropriate speed if there
are pedestrians close tothe path of
yo ur vehicle. Sy
stem limits
Fu ll sy stem per form ance is not available for a
fe w seconds af ter switching on the ignition or
af te r driving off.
If Ac tive Brake Assi stis impaired or inope rative
due toa malfunction, theÄ warning lamp
appears in the multifunction displa y.
The sy stem may be impaired or may not func‐
tion, particular lyin thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
R Ifth e sensors are dirty, mis ted up, damaged
or co vered.
R Ifth e sensors are impaired due tointer fer‐
ence from other radar sources, e.g. strong
ra dar reflections in multi-s torey car par ks.
R If a loss of tyre pressure or a defective tyre
has been de tected and displ ayed.
R In complex tra ffic situations where objects
cannot alw ays be clear lyidentified.
R If pedestrians or vehicles mo vequickly into
th e sensor de tection range. R
If pede strians are hidden by other objects.
R Ifth e typical outline of a pedestrian cann ot
be distinguished from the bac kground.
R If a pedestrian is not de tected as su ch, e.g.
due tospecial clo thing or other objects.
R Ifth e driver's seat belt is not fastened.
R On bends with a tight radius.
% The Active Brake Assi stsensors adjust auto‐
matically while a cer tain dis tance is being
driven af terth eve hicle has been delivered.
Ac tive Brake Assi stis una vailable or only
partially available during thete ach-in proc‐
ess.
Setting Active Brake Assi st
Re quirements:
R The ignition is switched on. 204
Driving and parking

Sy
stem limits
The sy stem may be impaired or may not function
in thefo llowing situations:
R Ifth ere is poor visibility, e.g. due toinsuf fi‐
cient illumination of thero ad, if there are
highly variable shade conditions or in rain,
sno w,fog or heavy spr ay.
R Ifth ere is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections.
R Ifth e windscreen in the area of the multi‐
function camera is dirty, or if the camera is
mis ted up, damaged or co vered.
R Ifth e tra ffic signs are hard todetect, e.g. due
to dirt or sno w,because they are co vered, or
due toinsuf ficient lighting.
R Ifyo u turn sharply when passing traf fic signs
outside the camera's field of vision. Setting Speed Limit Assist
Multimedia sy
stem:
4 © 5
Settings 5
Assistance
5 Speed Limit Assist
Ad justing the type of warning #
Select Visual & audible ,Visual orNone.
Ad justing the warning threshold
This value de term ines the speed at which a
wa rning is issued when exceeded. #
Select Warning threshold. #
Set the desired speed.
% If one of thefo llowing sy stems is activated,
th e speed de tected can be manually adop ted
as the speed limit:
R Active Dis tance Assi stDISTRONIC
R Cruise control
R Variable limiter
Fu rther information (/ page193). Tr
af fic Sign Assist Fu
nction of Traf fic Sign Assist
Tr af fic Sign Assi stdetects traf fic signs wi th the
multifunction camera (/ page179). It assi sts
yo uby displaying de tected speed limits and
ove rtaking restrictions in the instrument clus ter.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 178).
Since Traf fic Sign Assi stalso uses the data
st ored in the navigation sy stem, it can update
th e display in thefo llowing situations without
de tecting traf fic signs.
If th e sy stem de tects that you are driving on to a
section of road in the wrong direction of tr avel, it
triggers a warning.
The camera also de tects traf fic signs wi th a
re striction indicated byan additional sign (e.g.
when wet). These are only displa yed if a restric‐
tion applies or if the sy stem cann otclearly de ter‐
mine whe ther there striction applies. 206
Driving and pa rking