Microsleep de
tection also does not function
when the driver camera cann otdetect theey es
of the driver, as a result of thefo llowing factors,
fo rex ample:
R The driver's eyes are co vered due tothe
st eering column position, forex ample.
R Poor lighting conditions.
R Some types of spectacles or sunglasses.
R The driver's line of vision is outside the driver
camera's field of vision.
Also obser veany information rega rding display
messages that can be displa yed in the driver dis‐
pla y.
The tiredness and alertness assessment of
AT TENTION ASSIST with microsleep de tection is
re set and restar ted when continuing the journey
in thefo llowing situations:
R Ifyo u swit choff the engine.
R Ifyo u unfas tenyo ur seat belt and open the
driver's door (e.g. tochange drivers or take a
break). Setting
ATTENTION ASSI ST
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Assistance 5
ATTENTION ASSIST
Setting the sensitivity #
Tapth e cur rent setting. #
Select Standard orSensitive .
Ac tivating/deactivating the mic rosleep
wa rning #
Activate/deactivate Microsleep warning. Limiter
Fu
nction of the limiter
The limiter restricts the speed of theve hicle. To
re duce the speed tothe set speed, the limiter
applies the brakes automaticall y.
Yo u can limit the speed as follo ws:
R Variable: for a short-term speed restriction,
e.g. in built-up areas
R Perm anen t:for a longer-term speed restric‐
tion, e.g. in winter tyre mode The
variable limiter is operated using the cor re‐
sponding steering wheel buttons (/ page 232).
Yo u can store any speed abo ve20 km/h up to
th e maximum design speed or up tothe set win‐
te r tyre limit. You can also per form settings
while theve hicle is stationary if theve hicle has
been star ted.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219).
Messages in the driver display
R È (gre y): variable limiter is selec ted but
not yet acti vated.
R È (flashes gr ey):va riable limiter is temp o‐
rari lypassive.
R È (green): variable limiter is activated.
A stored speed appears under theÈ display
and is indicated in the speedome ter.
When the driving speed is greater than the
st ored speed, theÈ display flashes. 228
Driving and parking
Kickd
own
If yo u depress the accelerator pedal be yond the
pressure point (kickdown), theva riable limiter
swit ches topassive mode. The Èpassive
message appears on the driver displa y.
Af ter completion of kickdown, theva riable lim‐
iter is activated again in thefo llowing situations:
R Ifth eve hicle speed drops below thestored
speed.
R Ifth estored speed is called up.
R Ifyo ustore a new speed.
Information on the permanent limiter
If th eve hicle should ne verexc eed a specific
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
16 0 km/h and 240 km/h in the multimedia sys‐
te m (/ page 229).
Shortly before the set speed is reached, it is
shown in the driver displa y.When you confirm
th e message, display messages no longer appear
until you swit choff theve hicle. The speed will only be displa
yed again once theve hicle has
been restar ted or if the set speed is changed.
The permanent limiter does not swit chtopas‐
sive mode even du ring kickdown and the driven
speed remains below the set speed.
Setting the limit speed for winter tyres
Multimedia sy stem:
4 © 5
Settings 5
Vehicle 5
Driving #
Activate or deacti vate Winter tyre limit.
Setting a speed #
Select ZnexttoWinter tyre limit. #
Select a speed. Ac
tive Di stance Assist DISTRO NIC Fu
nction of Active Di stance Assist
DISTRO NIC
Ac tive Dis tance Assi stDISTRONIC maintains the
set speed on free-flowing roads. If vehicles in
front are de tected, the set dis tance is main‐
ta ined, if necessar y,until theve hicle comes to a
halt. The vehicle accelerates or brakes depend‐
ing on the dis tance totheve hicle in front and th
e set speed. The speed and dis tance tothe
ve hicle in front are set and sa ved using the
st eering wheel.
Ac tive Dis tance Assi stDISTRONIC is available in
th e 20 km/h to210 - km/h speed range.
Other features of Active Dis tance Assi st
DISTRONIC:
R Adjusts the driving style depending on the
selected drive program (fuel-saving, comfort‐
able or dynamic) (/ page199)
R Initia tes acceleration tothestored speed if
th e turn signal indicator is switched on to
ch ange totheov ertaking lane
R Reacts tostationary vehicles de tected in
urban speed ranges (e xcept bicycles and
mo torcyc les)
R 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-depend‐
ent)
Ad ditional function available in cert ain coun‐
tries: ifAc tive Dis tance Assi stDISTRONIC has
braked theve hicle toast andstill, it can automat‐ Driving and parking
229
Ac
tive Traf fic Jam Assi stactivates automatically
when all of thefo llowing conditions are me t:
R You are in a traf fic jam on a mo torw ay or
high-speed major road.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d and active (/ page 232).
R Active Steering Assist is activated and active
(/ page 239).
R You are tr avelling no fasterthan 60 km/h.
When Active Traf fic Jam Assi stis active the¬
st atus display appears in the driver displa y.
Sy stem limits
The sy stem limitations of Active Dis tance Assi st
DISTRONIC and Active Steering Assist apply to
Ac tive Traf fic Jam Assi st (/ page 237). Ac
tive Steering Assist Fu
nction of Active Steering Assist
Ac tive Steering Assist is only available up to a
speed of 210 km/h. The sy stem helps youto
st ay inthe cent reofthe lane bymeans of mod‐
erate steering inter ventions. Depending on thespeed driven,
Active Steering Assist uses the
ve hicles ahead and lane markings as a refer‐
ence.
% Depending on the count ry, in the lo wer
speed range Active Steering Assist can use
th e sur rounding traf fic as a refere nce. If nec‐
essar y,Ac tive Steering Assist can then also
pr ov ide assis tance when driving outside the
centre of the lane.
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.
Pe rm anent status display in the driver dis‐
play
Ø Grey:acti vated and passive
Ø Green: activated and active
Ø Red,flashing: prompttothe driver to
actively con firm or transition from active
to passive status, sy stem limit de tected
% 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 driver displa y.
Contact 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, an optical warning is given firs t. Dis‐
pl ay messa ge1 appears in the driver displa y.If Driving and parking
237
th
e driver still does not steer theve hicle, or
gives no confirmation tothe sy stem, a warning
to ne sounds in addition tothe visual warning
message.
If th e driver does not react tothis wa rning for a
considerable period, an emergency stop is initi‐
ated (/ page 239).
The warning is not issued or is stopped as soon
as the sy stem de tects that the driver has
to uched thesteering wheel.
To uch de tection may be limited or inoperati vein
th efo llowing situations:
R The driver is wearing glov es.
R There is a steering wheel co ver on thesteer‐
ing wheel.
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 219). 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.
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.
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.
R If transport equipment, forex ample a trailer
or bicycle rack , is attached tothe trailer
hitch and the electrical connection has been
cor rectly es tablished.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R Onvery tight bends and when turning.
R When crossing junctions.
R Atroundabouts or tollst ations.
R When actively changing lane without swit ch‐
ing on the turn signal indicator.
R When the tyre pressure is too lo w. 238
Driving and parking
play appears along with gr
eyarrow s in the driver
displa y.
If no vehicle or obs tacle is de tected in the adja‐
cent lane and a lane change is permit ted, the
lane change begins af terth e driver has indicated
brief ly. The lane change is shown tothe driver
with a flashing greenarro w next tothe±
st eering wheel symbol. Green ar row 1 is dis‐
pla yed in the appropriate adjacent lane in the
Assistance menu inthe driver displa y.The Lane
change to the left message,forex ample, also
appears.
Ac tive Lange Change Assi stcan be cancelled in
va rious situations, including thefo llowing:
R Change in the sur rounding conditions (e.g.
de tected obs tacle).
R The driver remo vesth eir hands from the
st eering wheel.
R The driver steers with too much forc e or in
th e opposite direction.
R The driver mo vesth e turn signal indicator in
th e opposite direction. R
Active Dis tance Assi stDISTRONIC or Active
St eering Assist is deactivated.
R The vehicle cannot make the lane change as
planned.
Cancellation of Active Lane Change Assi stis dis‐
pla yed as follo ws:
R The ar row in the selected direction of tr avel
turns red.
R A cor responding message appears onthe
driver displa y.
R In cer tain circums tances a warning tone
sounds. &
WARNING Risk of accident when chang‐
ing lane toan occupied adjacent lane
Lane Chan geAssi stcannot al ways clear ly
de tect if the adjacent lane is free.
The lane change might be initiated although
th e adjacent lane is not free. #
Before changing lanes, make sure that
th e neighbouring lane is free and there
is no danger to otherroad users. #
Monitor the lane change. &
WARNING Risk of accident if Lane
Change Assi stunexpectedly stops func‐
tioning
If th e sy stem limitations for Lane Change
Assist ha vebeen reached, there is no guar‐
antee that the sy stem will remain active.
Lane Change Assist cannot then assist you
by applying steering torque. #
Alw ays monitor the lane change and
ke ep your hands on thesteering wheel.
Obser vethe tra ffic conditions and steer
and/or brake if necessar y. Sy
stem limits
The sy stem limitations of Active Steering Assist
apply toActive Lane Change Assi st
( / page 237).
The sy stem may also be impaired or may not
function in thefo llowing situations:
R The sensors are damaged, co vered or dirty
(/ page 220). 242
Driving and pa rking
ous lane markings or only continuous lane mark‐
ings (/
page 257).
St atus displa ysforAc tive Lane Keeping
Assist
ï White:Ac tive Lane Keeping Assist is
deactivated.
ï Yello w: there is a malfunction. Please
also obser vethe display messages.
ð Grey:Ac tive Lane Keeping Assist is acti‐
va ted, but not operating.
ð Green: Active Lane Keeping Assist is
activated and operating. If the sy stem is
operational on only one side, the lane
marking is shown in green on the cor re‐
sponding side.
ð Red:Active Lane Keeping Assist has gui‐
ded you back into your lane with a
course-co rrecting steering inter vention.
The status display will flash if there is
also a haptic warning in thesteering
wheel. The lane marking is shown in red
only on the side for which there is a
wa rning. Ve
hicles without Driving Assistance
Pa ckage: if bothlane markings are
simultaneously shown in red in thest atus
displa y,Ac tive Lane Keeping Assist has
initiated an emer gency stop
(/ page 239).
Ac tive Lane Change Assi stdispl ayinthe
"Assistance" menu If
th e front wheel of theve hicle drives over a
de tected lane marking, this will be highligh ted
re d in theAssistance menu inthe driver's dis‐
pla y. %
Vehicles with active ambient lighting: if
Warning assistance is activated,theAc tive
Lane Keeping Assist warning is also accom‐
panied byambient lighting (/ page162).
Sy stem limits
In thefo llowing situations, no lane-cor recting
st eering inter vention occu rsbut rath er a warning
in thesteering wheel, depending on the situa‐
tion:
R You clear lyand actively steer, brake or accel‐
erate.
R If a driving saf ety sy stem inter venes, su chas
ESP ®
,Ac tive Brake Assi stor Active Blind
Spot Assi st.
R You ha veadop ted a sporty driving style with
high cornering speeds or high rates of accel‐
eration.
R When ESP ®
is deactivated.
R If transport equipment, forex ample a trailer
or bicycle rack , is attached tothe trailer
hitch and the electrical connection has been
cor rectly es tablished. 256
Driving and parking
When
theve hicle is stationar y,indicated vehicle
path 4into cur rently selected pa rking space
5 also appears. #
If parking spaces are displa yed: bring the
ve hicle toast andstill. #
If necessar y,select ano ther parking space. #
Vehicles with 360° Camera: tochange the
parking direction, tapth e selected parking
space again. #
Tostart the pa rking procedure: press but‐
to n1 again.
The vehicle drives into the selected parking
space.
The turn signal indicator is switched on automat‐
ically when the parking procedure begins. Yo u
are responsible for selecting the turn signal indi‐
cator in accordance with the traf fic conditions. If
necessar y,select the turn signal indicator
accordingly. &
WARNING Risk of accident due tovehi‐
cle swinging out while parking or pulling
out of a parking space
While parking or exiting a parking space, the
ve hicle swings out and can drive onto areas
of the oncoming lane.
This could cause youto collide wi thobjects
or other road users. #
Pay attention toobjects and other road
users. #
Where necessar y,stop theve hicle or
cancel the parking procedure with
Ac tive Parking Assist. On completion of
the parking procedure, the
Ø Active Parking Assist finished, take con-
trol of vehicle displaymessa geappears. #
Secure theve hicle against rolling away.
When requ ired bylegal requirements or local
conditions: turn the wheels towa rdsth eke rb.
% You can stop theve hicle and change the
transmission position du ring the parking pro‐
cedure. The sy stem then calculates a new
ve hicle path. If no new vehicle path is availa‐
ble, the transmission position can be
ch anged again, or the process can be can‐
celled. You can also inter rupt the parking
procedure bybraking, forex ample, tolet
people in or out of theve hicle. The parking
procedure can then be continued bybriefly
pressing the accelerator pedal. 274
Driving and pa rking
Exiting a pa
rking space with Active Parking
Assist
Re quirements:
R The vehicle is equipped with a 360° Camera.
R The vehicle has been par ked with Active
Pa rking Assist. #
Start theve hicle. #
Press button 1. #
Select Parking Assistance menu2. #
If necessar y,ch ange direction of exit3. #
Tostart exiting the pa rking space: press
button 1again. #
If necessar y,ch ange the transmission posi‐
tion. Obser veany messages displa yed in the
driver display and central displa y.
The vehicle mo ves out of the parking space. The turn signal indicator is automatically
switched on when
exiting a parking space begins
and switched off when it is comple ted. You are
re sponsible for selecting the turn signal indicator
in accordance with the traf fic conditions. If nec‐
essar y,select the turn signal indicator accord‐
ingly.
Af terth e parking space has been exited, a warn‐
ing tone and theØ Active Parking Assist fin-
ished, take control of vehicle message prompt
yo uto take control of theve hicle. You ha veto
accelerate, brake, steer and change gear your‐
self again.
If yo u do not react tothe prom pttotake control
of theve hicle, the sy stem will brake theve hicle
to ast andstill.
Fu nction of Remo teParking Assist
% Remo teParking Assist is an additional func‐
tion of Active Parking Assist. Comply with
local traf fic la wsand regulations when using
Re mo teParking Assist on public roads.
If it is requ ired toturn the wheels towa rdthe
ke rb, you cannot use Remo teParking Assist. Driving and parking
275