2018 MERCEDES-BENZ A-CLASS SALOON Owners Manual

R
The neighbouring lane is separated bya bro‐
ke n lane ma rking.
R Novehicle is de tected in the adjacent lane.
R The driven speed is between 80 km/h and
18 0 km/h.
R Active Lane Change Assi stis switched on in
th e multimedia sy stem.
R Active Steering Assist is switched on and
active. If no
vehicle is de tected in the adjacent lane and
a lane change is permit ted, the lane change
begins. This is shown tothe driver with a green
ar row 2next tothesteering wheel symbol. The
Lane change to the left message also
appears, forex ample. If Active Lane Change
Assi sthas been activated with the turn signal
indicator but a lane change is not immediately
possible, a gr eyarrow 1appears next tothe
st eering wheel symbol, which remains green.
When the lane change assis tance starts, the turn
signal indicator is automatically activated beside
th e display in the multifunction displa y.
If th e assis tance graphic is shown when chang‐
ing lanes, the lane change display appears with
an additional ar rowpointing towa rdsth e adja‐
cent lane (/ page215).
If a lane change is not possible, the ar row fa des
out af ter a few seconds and a new lane change
must be initiated. An immediate lane change is
on ly possible on mo torw ay sections without
speed limits.
If th e sy stem is impaired, Active Lane Change
Assi stmay be cancelled. If it is cancelled, the
Lane change cancelled message appears inthe
multifunction display and a warning tone sounds. &
WARNING Risk of accident from chang‐
ing lane toan occupied adjacent lane
Lane Chan geAssi stcannot al ways detect
clear lyifth e 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 torques. #
Alw ays monitor the lane change and
ke ep your hands on thesteering wheel. 214
Driving and pa rking

Obser
vethe tra ffic conditions and steer
and/or brake if necessar y.Sy
stem limitations
The sy stem limitations of Active Steering Assist
apply toActive Lane Change Assi st
( / page211).
The sy stem may also be impaired or may not
function in thefo llowing situations:
R The sensors in there ar bumper are dirty,
damaged or co vered, for ins tance by a
st icke r or ice and sno w.
R The exterior lighting is malfunctioning.
Ac tivating/deactivating Active Lane Change
Assi st
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Act. lane chan. assist #
Activate or deacti vate the function.
Fu nction of Active Eme rgency Stop Assist
If th e driver continually ignores the visual or
acoustic warning toput their hands on thesteer‐
ing wheel, theBeginning emergency stop mes‐sage appears in
the multifunction displa y.Ifthe
driver still does not respond, Active Dis tance
Assi stDISTRONIC reduces the speed. The vehi‐
cle is decelerated in stages toast andstill. 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 theve hicle is secured with the electric park‐
ing brake
R Active Dis tance Assi stDISTRONIC is ended
R theve hicle 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 pressing a steering wheel button
R operating Touch Control
R activating or deactivating Active Dis tance
Assi stDISTRONIC Overvi
ewofActive Di stance Assist
DISTRO NIC displa ysinthe instrument clus‐
ter The assis
tance graphic and thest atus display
show thest atus of thefo llowing functions in the
instrument clus ter:
R Active Dis tance Assi stDISTRONIC
R Route-based speed adap tation
R Active Steering Assist Driving and parking
215

Assistant display
1
Route-based speed adap tation (type of route
eve nt)
2 Vehicle in front
3 Distance indica tor
4 Set specified di stance
5 Active Lane Change Assi stlane change dis‐
play Ac
tive Di stance Assist DISTRO NICstatus dis‐
play and route-based speed adaptation 1
Active Dis tance Assi stDISTRONIC selected,
set speci fied dis tance (number of segments
below theve hicle)
2 Active Dis tance Assi stDISTRONIC deacti va‐
te d, speed stored 3
Active Dis tance Assi stDISTRONIC acti ve,
speed stored, no vehicle de tected (bright
ve hicle symbol)
4 Active Dis tance Assi stDISTRONIC acti ve,
speed stored, vehicle de tected (green vehi‐
cle symbol)
5 Active Dis tance Assi stDISTRONIC and route-
based speed adap tation acti ve, speed stored
% On mo torw ays or high-speed major roads,
th e green çvehicle symbol is displa yed
cyclically when theve hicle is ready topull
aw ay.
% Ifyo u depress the accelerator pedal be yond
th e setting of theAc tive Dis tance Assi st
DISTRONIC, the sy stem is switched topas‐
sive mode. The çsuspended message
appears in the multifunction displa y.
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. Activation or deacti va‐
tion of Active Dis tance Assi stDISTRONIC, as 216
Driving and pa rking

we
ll as alterations tothe speed due tomanual or
auto matic adoption of the speed limit, are dis‐
pla yed in the control feedback of the multifunc‐
tion display on a single line.
Ac tive Steering Assist status display 1
Grey steering wheel: Active Steering Assist
switched on and passive
2 Green steering wheel: Active Steering Assist
switched on and active
3 Flashing steering wheel: prom pttothe driver
to actively con firm or transition from active
to passive status, sy stem limitation de tected Fu
nction of 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 Vehicles with automatic transmission: the
transmission is in position hork.
R The electric pa rking brake is released.
This gives you enough time tomo veyour foot
from the brake pedal tothe accelera tor pedal
and depress it before theve hicle begins toroll
aw ay. &
WARNING Risk of accident and inju ry
due totheve 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
pedal. Ne ver attem pttolea vetheve hi‐
cle if it is being held byHill Start Assist. HOLD function
HOLD function
The HOLD function holds
theve hicle at a stand‐
st ill without requ iring youto depress the brake
pedal, e.g. while waiting in traf fic.
The HOLD function is only an aid. The responsi‐
bility forth eve hicle safely standing still remains
with the driver.
Sy stem limitations
The HOLD function is only intended toprov ide
assis tance when driving and is not a su fficient
means of safeguarding theve hicle against rolling
aw ay when stationar y.
R The incline must not be greater than 30%. Driving and parking
217

Ac
tivating/deactivating the HOLD function &
WARNING Risk of an accident due tothe
HOLD function being activated when you
lea vetheve hicle
If yo u lea vetheve hicle while only the HOLD
function is braking theve hicle, theve hicle
can rollaw ay inthefo llowing situations:
R Ifth ere is a malfunction in the sy stem or
in the po wer supp ly.
R Ifth e HOLD function is deactivated by
depressing the accelera tor pedal or brake
pedal, e.g. byave hicle occupant. #
Alw ays deactivate the HOLD function
and secure theve hicle against rolling
aw ay before leaving theve hicle. *
NO
TEDama gefrom auto matic braking If one of
thefo llowing functions is switched
on, theve hicle brakes automatically in cer‐
ta in situations:
R Active Brake Assi st
R Active Dis tance Assi stDISTRONIC
R HOLD function
R Active Parking Assist
To avo id damage totheve hicle, deactivate
th ese sy stems in thefo llowing or similar sit‐
uations: #
During towing #
In a car wash Re
quirements:
R The vehicle is stationar y.
R The driver's door is closed or the seat belt on
th e driver's side is fastened.
R The engine is running or has been au tomati‐
cally switched off bythe ECO start/ stop
function. R
The electric parking brake is released.
R Active Dis tance Assi stDISTRONIC is deacti‐
va ted.
R The transmission is in position h,kori.
Ac tivating the HOLD function #
Dep ress the brake pedal and af ter a short
time quickly depress fur ther until theë
display appears in the multifunction displa y. #
Release the brake pedal.
Deactivating the HOLD function #
Depress the accelerator pedal topull away.
or #
Depress the brake pedal until theë dis‐
play disappears from the multifunction dis‐
pla y.
The HOLD function is deactivated in thefo llow‐
ing situations:
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
R The transmission is switched toposition j. 218
Driving and pa rking

R
The vehicle is secured with the electric park‐
ing brake.
In thefo llowing situations, theve hicle is held by
th e transmission position jorby the electric
parking brake:
R The seat belt is unfas tened and the driver's
door is opened.
R The drive sy stem is switched off.
R There is a malfunction in the sy stem or the
po we r supply is insuf ficient. St
art-off assi st Fu
nction of thest art-off assi st
The start-off assist enables optimal vehicle
acceleration from a standstill. Forth is, a suitably
high-grip road sur face is requ ired, the tyres and
ve hicle must also be in good condition.
Do not activate thest art-off assist on public
ro ads.
Be sure toobser vethe saf ety no tes and informa‐
tion on ESP ®
. Ac
tivating the start-off assi st &
WARNING Risk of skidding and having
an accident from wheels spinning
When you use start-off assist, individual
wheels could spin and you could lose cont rol
of theve hicle.
If ESP ®
is deactivated, there is a risk of skid‐
ding and accident! #
Make sure that no persons or obstacles
are in the close vicinity of your vehicle. #
Deactivating ESP ®
(/ page194). #
Movethesteering wheel tothest ra ight-
ahead position. #
Depress the brake pedal firm ly wi thyour left
fo ot and keep it depressed. #
Enga getheh drive position
(/ page171). #
Select the sportiest available drive program
B orC(/ page165). #
Rapidly depress the accelerator pedal full y. #
Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accelera‐
tion. #
Swit chon ESP ®
once the acceleration proce‐
dure is comple te. ESP ®
will otherwise not be
able tostabilise theve hicle if theve hicle
st arts toskid or a wheel starts tospin.
Cancelling thest art-off assi st #
Remo veyour foot from the accelerator pedal. #
Reactivate the ESP ®
. Fu
nction of adapt ive damping adjustment Suspension with adaptive damping adjustment
continuously adjusts
thech aracteristics of the
suspension dampers tothe cur rent operating
and driving conditions.
The da mping is tuned individually for each wheel
and is af fected bythefo llowing factors:
R thero ad sur face conditions
R vehicle load
R the drive prog ram selected Driving and parking
219

R
the driving style
The drive program can be adjus ted using the
DY NA MIC SELECT switch. Park
ing Assist PARKTRONIC Fu
nction of Parking Assist PARKTRONIC Pa
rking Assist PARKTRONIC is an electronic
parking assi stance sy stem with ultrasound. It
monitors the area around your vehicle using six
sensors 1inthe front bumper and six sensors
in there ar bumper. Parking Assist PARKTRONIC
sho wsyouth e dis tance between your vehicle
and a de tected obs tacle visually and audibly. Pa
rking Assist PARKTRONIC is on lyan aid. It is
not a substitute foryo ur attention tothe sur‐
ro undings. The responsibility for safe manoeu‐
vring and parking remains with you. Make sure
th at there are no persons, animals or objects in
th e manoeuvring area while manoeuvring and
parking in/exiting parking spaces.
In thest andard setting, an intermit tent wa rning
to ne sounds from a di stance of appr oximately
0.3 m toan obs tacle in front and appr oximately
1. 0 m toan obs tacle behind. A continuous tone
sounds from a di stance of appr oximately 0.2 m.
Using theWa rnear lysetting in the multimedia
sy stem, thewa rning tones for front and side
impact pr otection can also be set tosound at a
greater dis tance of appr oximately 1.0 m
(/ page 223).
% The Warnear lysetting is alw ays active in
th ere ar of theve hicle.
If Pa rking Assist PARKTRONIC is deacti vated,
Ac tive Parking Assist is una vailable. Pa
rking Assist PARKTRONIC displ ayinthe
mu ltimedia sy stem Ve
hicles with Active Parking Assist without a
360° Camera 220
Driving and parking

Ve
hicles with Active Parking Assist and a 360°
Camera
If Ac tive Parking Assist is deactivated and an
obs tacle is de tected in the path of theve hicle, a
pop-up window forPa rking Assist PARKTRONIC
1 appears in the multimedia sy stem at speeds
below 10km/h.
Sy stem limitations
Pa rking Assist PARKTRONIC does not necessa‐
ri ly take into account thefo llowing obs tacles:
R Obs tacles bel ow the detection range, e.g.
pe rsons, animals or objects. R
Obs tacles ab oveth e de tection range, e.g.
ove rhanging loads, overhangs or loading
ra mp s of lor ries.
The sensors must be free of dirt, ice and slush.
Otherwise, they may not function cor rectly.
Clean the sensors regularly, taking care not to
scratch or damage them.
Ve hicles with trailer hitch: Parking Assist
PA RKTRONIC is deacti vatedfo rth ere ar zone
when you es tablish an elect rical connection
between your vehicle and a trailer.
Fu nction of the passive side impact pr otec‐
tion
Pa ssive side impact pr otection is an additional
Pa rking Assist PARKTRONIC function which
wa rnsth e driver about obs tacles at the side of
th eve hicle. A warning is issued when obs tacles
are de tected between the front and rear de tec‐
tion range. In order for an object on the side to
be de tected, the sensors in the front and rear
bumper must firs t de tect the object while you
are driving past it.
During the parking procedure or manoeuvring,
objects are de tected as theve hicle drives past. If
yo usteer in the direction of a de tected obs ta‐
cle and there is a risk of a lateral collision, a
wa rning is issued. The segments on the sides
light up yellow or red, depending on the dis tance
to the obs tacle.
Segment colour depending on distance Colour Lateral distance in
cm
Ye llo wA pprox. 30 - 60
Re dA pprox. < 30 In order
for lateral front or rear segments tobe
displa yed, theve hicle must firs t tr ave l a dis tance
of at least half of theve hicle length. Once the
ve hicle has tr avelled the length of theve hicle, all
of the lateral front and rear segments can be dis‐
pla yed. Driving and parking
221