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If no speed limit is display
ed whenthe le ver is
operated, the speed set bythe driver is adop ted.
Drive prog ram
The DYNA MIC SELECT switch allo wsyouto
ch ange the driving style of Dis tance Pilot
DISTRONIC. Depending on which drive program
is selected, the driving characteristics can be
ge ared towa rds fuel econom y,comfort or
dynamic per form ance (→ page148).
Sy stem limitations
Dis tance Pilot DISTRONIC is acti veinthe
0 km/h to200 km/h speed range.
Ve hicles with the Driving Assistance Pack‐
age: Distance Pilot DISTRONIC is acti veinthe
0 km/h to210 km/h speed range.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in great lyvarying
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
On slippery roads, braking or accelerating
can cause the drive wheels tolose traction
and theve hicle could then skid.
R In multi-s torey car par ks,to llst ations or on
ro ads with steep uphill or downhill gradients.
Do not use Dis tance Pilot DISTRONIC in these
situations.
Tips
Pa y particular attention in thefo llowing traf fic
situations. In such situations, brake if necessar y.
Dis tance Pilot DISTRONIC is then deactivated:
R When cornering, entering and exiting a bend.
R When not driving in the cent reofthe lane.
R When other vehicles are changing lane.
R Ifth ere are nar rowvehicles.
R Ifth ere are obs tacles and stationary vehi‐
cles.
R Ifth ere are crossing vehicles, pedestrians,
mo torcyc lists or cyclists. Display of Distance Pilot DISTRONIC in
the
assi stance graphic and in the speedome ter 1
Vehicle ahead
2 Distance indica tor
3 Set specified di stance
4 Own vehicle 18 2
Driving and pa rking
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1
Speed of vehicle ahead
2 Stored speed
Displa ysinthe multifunction display
When activating Dis tance Pilot DISTRONIC or
when changing thestored speed, the new stored
speed is shown for around five seconds in the
ç multifunction display 70 km/h.
When Dis tance Pilot DISTRONIC is acti ve,th e set
st ored speed is displa yed next totheç sym‐
bol. When dis tance control is acti ve,th e symbol
is shown in green.
Ve hicles with the Driving Assistance Pack‐
age: On mo torw ays or high-speed major roads th
eç symbol is displa yed cyclically when the
ve hicle is ready topull away.
Ve hicles with Speed Limit Pilo t:If a speed
limit is automatical lyadop ted, this is shown as
th estored speed with theê symbol.
Operating Distance Pilot DISTRONIC &
WARNING Risk of accident if de tection
function of Dis tance Pilot DISTRONIC is
impaired
The Dis tance Pilot DISTRONIC does not
re act:
R topeople or animals
R tostationary obs tacles on thero ad, e.g.
st opped or par kedve hicles (vehicles with‐
out the Driving Assis tance Package)
R tostationary obs tacles on thero ad, e.g.
st opped or par kedve hicles, if conditions
are not suf ficient toenable de tection
(vehicles wi th the Driving Assis tance
Pa ckage)
R tooncoming vehicles and crossing traf fic As a
result, Dis tance Pilot DISTRONIC may
nei ther give warnings nor inter vene in su ch
situations. #
Alw ays carefully obser vethe traf fic con‐
ditions and be ready tobrake at all
times. &
WARNING Risk of accident due tolimi‐
te d de tectability of road users and traf fic
situations
Dis tance Pilot DISTRONIC cannot al ways
clear lyidentify other road users and complex
traf fic situations.
In these conditions, Dis tance Pilot
DISTRONIC may:
R give an unnecessary warning and then
brake theve hicle
R neither give a warning nor inter vene
R accele rate or brake unexpectedly #
Continue driving with care and be ready
to brake, particular lyif Dis tance Pilot
DISTRONIC warnsyo u. Driving and parking
18 3
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&
WARNING Risk of accident due toinsuf‐
fi cient decele ration byDis tance Pilot
DISTRONIC
Dis tance Pilot DISTRONIC brakes your vehi‐
cle with up to50% of the maximum possible
braking po wer.If th is decele ration is not suf‐
fi cient, Dis tance Pilot DISTRONIC alerts you
with a visual and acoustic warning. #
Apply the brakes yourself in these situa‐
tions and try totake evasive action. &
WARNING Risk of accident due toDis‐
ta nce Pilot DISTRONIC still being activa‐
te d when you lea vethe driver's seat
If yo u lea vethe driver's seat while theve hicle
is being braked byDis tance Pilot DISTRONIC
only, it can rollaw ay inthefo llowing situa‐
tions:
R Ifth ere is a malfunction in the sy stem or
in the po wer supp ly. R
If Dis tance Pilot DISTRONIC is deacti va‐
te d with the cruise control le ver,e.g. by a
ve hicle occupant or from outside the
ve hicle.
R Ifth e electrics in the engine compart‐
ment, the battery or the fuses are tam‐
pered with.
R Ifth e battery is disconnected.
R Ifth eve hicle is accelerated, e.g. by a
ve hicle occupant. #
Alw ays deactivate Dis tance Pilot
DISTRONIC and secu retheve hicle to
pr eve nt it from rolling away before you
lea vethe driver's seat. &
WARNING Risk of accident due to
unknown stored speed
If yo u call up thestored speed and this is
lo we rth an your cur rent speed, theve hicle
decelerates.
If yo u do not kn owthestored speed, the
ve hicle could decelerate unexpectedl y. #
Take into account the tra ffic situation
before calling up thestored speed. #
Ifth estored speed is not known, store
th e desired speed again. &
WARNING Risk of accident due tounex‐
pec ted acceleration byDis tance Pilot
DISTRONIC
If Dis tance Pilot DISTRONIC no longer
de tects a vehicle in front, it may unexpect‐
edly accelerate tothe speed stored.
R This speed may be too high for a filter
lane or a slip road.
R If driving in theright lane, this speed may
be so high that you pass vehicles driving
on the left (in count ries where traf fic
drives on theright).
R If driving in the left lane, this speed may
be so high that you pass vehicles driving
on theright (in countri es where traffic
drives on the left). 184
Driving and pa rking
Page 188 of 521

Alw
ays carefully obser vethe tra ffic condi‐
tions and be ready tobrake at all times. &
WARNING Risk of accident due toDis‐
ta nce Pilot DISTRONIC pulling away auto‐
matically
If Dis tance Pilot DISTRONIC pe rforms an
automatic driving-off procedure, theve hicle
may accelerate unexpectedl y.
Where necessar y,brake theve hicle yourself
and take evasive action. &
WARNING Risk of accident due toSpeed
Limit Pilot adapting theve hicle's speed
The speed adop tedby the Speed Limit Pilot
may be too high or incor rect in some individ‐
ual cases, su chas:
R inthewe t or in fog
R when towing a trailer
Ensure that the driven speed complies with
traf fic re gulations. Re
quirements:
R The vehicle has been star ted.
R The elect ric pa rking brake is released.
R Parking Pilot is not being used topark the
ve hicle or toexit from a parking space.
R ESP ®
is activated, but is not inter vening.
R The transmission is in position h.
R The driver's door, front passenger door and
there ar doors are closed.
R The engine bonnet is closed. #
Ifth e LIM indicator lamp is lit: toselect Dis‐
ta nce Pilot DISTRONIC 1. #
Remo veyour foot from the accelerator pedal. #
Tostore cur rent speed 3.
Yo ur vehicle adapts its speed tothat of the
ve hicle in front, but only up tothestored
speed.
or Driving and parking
18 5
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#
Call up stored speed 3. #
OrOn vehicles with Driving Assistance
Pa ckage and Traf fic Sign Assis t:If Speed
Limit Pilot in the multimedia sy stem and Dis‐
ta nce Pilot DISTRONIC are acti vated, the dis‐
pla yed speed limit is adop ted, if available 3. #
Todeactivate Dis tance Pilot DISTRONIC 2.#
Toinc rease 4orreduce 5the speed. #
Toreduce 6or increase 7the specified
dis tance from theve hicle in front.
Pulling away with Distance Pilot DISTRONIC
Re quirement
A speed has been pr eviously stored. #
Remo veyour foot from the brake pedal. #
Brief lypull the cruise control le verto wa rds
yo u3. or #
Accelerate brie fly.
Yo ur vehicle pulls away and adapts its speed
to that of theve hicle in front. If no vehicle is
de tected in front, your vehicle accelerates to
th e set speed.
Ad opting the speed limit as thesto red speed
Re quirements:
R Speed Limit Pilot is activated in the multime‐
dia sy stem (→ page212).
R Distance Pilot DISTRONIC is acti vated.
R The sy stem de tects a traf fic sign indicating a
speed limit. #
Brie fly pull the cruise control le verto wa rds
yo u3.
The displ ayed speed limit is adop ted as the
st ored speed. Your vehicle adapts its speed
to that of theve hicle in front, but only up to
th estored speed. If Speed Limit Pilot is acti‐
va ted, any de tected changes in the speed
limit are adop tedby the sy stem. 18 6
Driving and pa rking
Page 190 of 521

Collision
warning
If Dis tance Pilot DISTRONIC is unable tosuf fi‐
ciently decele rate theve hicle in order topreve nt
it from approa ching theve hicle in front, you will
be warned visually and acousticall y.An intermit‐
te nt wa rning tone will then sound and the dis‐
ta nce warning lamp will light up in the instru‐
ment clus ter. #
Brake immediately in order toinc rease the
dis tance from theve hicle in front.
or #
Take evasive action pr ovided it is safe todo
so. Ste
ering Pilot Fu
nction of Steering Pilot
Ste ering Pilot is only available forve hicles
with the Driving Assistance Package.
R Steering Pilot is operational at speeds up to
21 0 km/h and helps youto stay inthe cent re
of the lane bymeans of moderate steering
inter ventions. R
It uses theve hicle in front and the lane mark‐
ings as a refere nce depending on the driven
speed.
R Steering Pilot requ ires you as the driver, to
ke ep your hands on thesteering 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.
R Steering Pilot can be overridden at any time
by steering theve hicle yourself.
R When the sy stem is actively steering, the
è symbol is shown in green in the multi‐
function displa y.
Sy stem limitations of Steering Pilot
St eering Pilot has a limited steering torque for
lateral guidance. In some cases, thesteering
inter vention is not su fficient tokeep theve hicle
in the lane.
If de tection of lane markings and vehicles ahead
is impaired, Steering Pilot switches topassive
mode. The sy stem pr ovides no support in this
case. During the transition from the active to
passive status, theè symbol is shown as
enlar ged and flashes yello w. Once the sy stem is passive
theè symbol is shown as gr eyinthe
multifunction displa y.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R Ifth ere is poor visibility, e.g. due toinsuf fi‐
cient illumination of thero ad, or due tosno w,
ra in, fog or spr ay.
R Ifth ere is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflection from other vehi‐
cles (e.g. if the car riag ewa y is wet).
R Ifth e windscreen is dirty, mis ted up, dam‐
aged or co vered, for ins tance byast icke r,in
th e vicinity of the camera.
R If no, or se veral, unclear lane markings are
present for one lane, e.g. in a construction
area.
R Ifth e lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w.
R The dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected. Driving and pa
rking 187
Page 191 of 521

R
Ifth e lane markings change quickl y,e.g.
lanes branch off, cross one ano ther or
mer ge.
R The car riag ew ay is nar rowand winding.
R Ifth ere are highly variable shade conditions
on the car riag ewa y.
R Ifth ere are obs tacles su chas object mar kers
on the lane or projecting out into the lane.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R Onvery sharp bends.
R When towing a trailer.
R Ifyo u actively change lane without swit ching
on the turn signal indicator.
R Ifyo u swit chon the turn signal indicator and
th e conditions for activating Active Lane
Change Assi stare not fulfilled.
Ac tivating Steering Pilot
Requ irements:
R ESP ®
must be switched on, but not inter ven‐
ing. R
Distance Pilot DISTRONIC mu stbe activated. #
If indicator lamp 1is off: press button 2.
Fu nction of Active Lane Change Assi st
St eering Pilot is only an aid. You are responsible
fo rth e dis tance totheve hicle in front, forve hi‐
cle speed, for braking in good time and forst ay‐
ing in lane. Before changing lanes, make sure th
at the neighbouring lane is free (shoulder
view).
% The availability of thefo llowing function is
countr y-dependent.
St eering Pilot remains active even if the turn sig‐
nal indicator is switched on. Steering Pilot then
assists the driver when changing lanes byapply‐
ing steering torques toinitiate the lane change.
Assis tance when changing lanes is pr ovided if all
th efo llowing conditions are me t:
R You are driving on a mo torw ay or high-speed
multi-lane major road with multiple lanes in
th e direction of tr avel.
R The neighbouring lane is free and separated
bya broken lane marking.
R The driven speed is between 80 km/h and
18 0 km/h.
R The turn signal indicator is switched on for
longer than two seconds.
If th e sy stem is impaired, Active Lane Change
Assi stmay be inter rupte d. If an inter ruption
occurs, display 1appears in the multifunction 18 8
Driving and pa rking
Page 192 of 521

display along with a
warning tone prom pting you
to take control of theve hicle. Ste
ering and contact de tection
St eering Pilot requ ires you as the driver, tokeep
yo ur hands on thesteering wheel at all times so
th at you are able tointer vene at any time tocor‐
re ct the course of theve hicle and keep it in lane.
The driver must expect a change from active to
passive mode or vice versa at any time.
If yo u are not steering yourself or if you take
yo ur hands off thesteering wheel for a pro‐
longed period of time, the sy stem will, depend‐
ing on the situation, firs t alert you with a visual
wa rning. 1appears in the multifunction displa y.If
yo u are still not steering theve hicle yourself or
if yo u ha venot take n hold of thesteering wheel,
a wa rning tone sounds in addition tothewa rning
message toremind youto take control of the
ve hicle.
The warning message does not appear or disap‐
pears if one of thefo llowing conditions are me t:
R The driver steers theve hicle.
R The driver presses a steering wheel button or
operates Touch Control.
Fu nction of Active Eme rgency Stop Assist
If th e driver continues toigno rethe acoustic
wa rning of theAc tive Lane Change Assi st, Dis‐
ta nce Pilot DISTRONIC reduces the speed. If the
driver still does not respond, theve hicle is decel‐
erated in stages toast andstill.
The driver can cancel the deceleration at any
time byper form ing one of thefo llowing actions:
R Steering
R Braking or accelerating
R Pressing a steering wheel button or operat‐
ing Touch Control R
Activating or deacti vating Steering Pilot or
Dis tance Pilot DISTRONIC
The driver mu stbe ready totake control of the
ve hicle at any time. Information on Hill
Start Assist Hill
Start Assist holds theve hicle for a short
time when pulling away on a hill under thefo l‐
lowing conditions:
R The transmission is in position hork.
R The elect ric pa rking brake is released.
This gives you enough time tomo veyour foot
from the brake pedal tothe accelerator pedal
and depress it before theve hicle begins toroll. &
WARNING Risk of accident and inju ry
caused bytheve hicle rolling away
Af ter a short time, Hill Start Assist no lon ger
holds theve hicle and it can rollaw ay. #
Therefore, swiftly mo veyour foot from
th e brake pedal tothe accelerator Driving and parking
18 9