2018 MERCEDES-BENZ A-CLASS HATCHBACK cruise control

1
Steering wheel gearshift paddles →
16 6
2 Combination swit ch →
124
3 DIRECT SELECT le ver →
16 4
4 Start/ stop button →
15 2
5 Multimedia sy stem display →
284
6 Climate control sy stems →
14 2
7 Haza rdwa rning lights →
12 5
8 PASSENGER AIRB AGindicator lamps →
41
9 Glovebox →
102
A Stow age compartment →
102
B Cup holder →
11 0
C Control knob
Swit ches the sound and volume on and off →
280
Swit ches the multimedia sy stem on/off →
280
D Calls up navigation →
324
E Calls up thera dio →
413
Calls up media →
408 F
Calls up thete lephone →
368
G Calls up favo urites →
296
H Calls up vehicle functions →
288
I Active Parking Assist →
227
J DYNA MIC SELECT switch →
161
K Control elements forth e multimedia sy stem →
284
L Control panel forth e multimedia sy stem →
24 9
M Adjusts thesteering wheel →
97
N Control panel for:
On-board computer →
24 9
Operating cruise contro l ortheva riable limiter →
19 8
Operating Active Dis tance Assi stDISTRONIC →
202
O Diagno stics connection →
25
P Unloc ksthe bonn et →
421
Q Electric parking brake →
181
R Light switch →
12 2 At
aglance – Cockpit 7

Fu
nction of thera dar senso rs Some driving and driving sa
fety sy stems use
ra dar sensors tomonitor the area in front of,
behind or next totheve hicle (depending on the
ve hicle's equipment).
Depending on theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind the Mercedes star. Keep these
parts free of dirt, ice and slush (→ page 432).
The sensors must not be co vered, forex ample
by cycle rack s, ove rhanging loads, sticke rs,fo il
or foils toprotect against stone chipping. In the
eve nt of dama getothe bumpers or radiator
grille, or following a collision impacting the
bumpers or radiator grille, ha vethe function of
th era dar sensors checked at a qualified special‐
ist workshop. The driver assis tance sy stem may
no longer workproper ly. Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R 360° Camera (→ page 221)
R ABS (Anti-lock Braking System)
(→ page 185)
R Active Dis tance Assi stDISTRONIC
(→ page 200)
R Adaptive brake lights (→ page196)
R Active Brake Assi st (→page 190)
R Active Lane Keeping Assist (→ page240)
R ATTENTION ASSIST (→ page 231)
R BAS (Brak eAssist System) (→ page186)
R Hill Start Assist
R DYNA MIC BODY CONTROL (→ page214)
R EBD ( Electronic Brakeforc eDistribution)
(→ page 190)
R ESP ®
(Electronic Stability Program)
(→ page 186) R
Speed Limit Assist (→ page 233)
R Active Speed Limit Assi st (→page 204)
R HOLD function (→ page212)
R STEER CONTROL (→ page 190)
R Active Steering Assist (→ page 206)
R Speed limiter (→ page197)
R Active Parking Assist (→ page 225)
R Parking Assist PARKTRONIC ( →page 214)
R Reversing camera (→ page218)
R Cruise control (→ page196)
R Function of Blind Spot Assi stand Active Blind
Spot Assi stwith exitwa rning (→ page 237)
R Traf fic Sign Assi st (→page 235) Fu
nction of ABS (Anti-lock Braking Sy stem) ABS
regulates the brake pressure in critical driv‐
ing situations:
R During braking, e.g. at full brake application
or insuf ficient tyre traction, the wheels are
pr eve nted from lo cking.
R Vehicle steerability while braking is ensured. Driving and parking
18 5

Setting
Active Brake Assi stRe
quirements:
R The ignition is switched on.
Multimedia sy stem:
, © .
Settings .
Assis-
tance .
Active Brake Assist
The following settings are available:
R Early
R Medium
R Late #
Select a setting.
The setting is retained when the engine is
next star ted.
Deactivating Active Brake Assi st
% It is recommended that you alw ays lea ve
Ac tive Brake Assi stactivated. #
Select Off.
The dis tance warning function, the autono‐
mous braking function and the Evasive Steer‐
ing Assist are deactivated. When
theve hicle is next star ted, the middle
setting is automatically selected.
% IfAc tive Brake Assi stis deactivated, the
æ symbol appears inthest atus bar of the
multifunction displa y. Fu
nction of Adaptive Brake Lights Ad
aptive Brake Lights warnfollowing traf fic in an
emergency braking situation wi th thefo llowing
actions:
R Byflashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds
abo ve50 km/h, the brake lamps flash rapidl y.
This pr ovides traf fic tr avelling behind you with an
ev en more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake applica‐
tion, the hazard warning lights switch on once
th eve hicle is stationar y.When you pull away
again, the hazard warning lights will switch off
automatically at appr oximately 10km/h. Yo u can also switch off
the hazard warning lights
using the hazard warning button. Cruise control and limiter
Fu
nction of cruise control
Cruise cont rolre gulates the speed totheva lue
selec tedby the driver.
If yo u accelerate toove rtake, forex ample, the
st ored speed is not dele ted. If youre mo veyour
fo ot from the accelera tor pedal af terov ertaking,
cruise control will resume speed regulation back
to thestored speed.
Cruise contro l is operated using the cor respond‐
ing steering wheel buttons. You can store any
ro ad speed abo ve20 km/h up tothe maximum
ro ad speed or tothe set winter tyre limit.
If yo ufa ilto adapt your driving style, cruise con‐
trol can neither reduce therisk of an accident
nor override the la wsof ph ysics. It cannot take
into account road, weather or traf fic conditions.
Cruise control is only an aid. You are responsible
fo r maintaining a safe dis tance totheve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane. 19 6
Driving and pa rking

Displa
yson the multifunction display
The status of cruise control and thestored
speed are shown in the multifunction displa y.1
Cruise cont rol is selec ted
2 Speed is sa ved, cruise control is deactivated
3 Speed is sa ved, cruise control is activated
% The segments extending from the cur rent
st ored speed tothe end of the scale, or to
th e set winter tyre limit, light up in the
speedome ter. Sy
stem limitations
Cruise control may be unable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed when the gradient evens out.
Change into a lo werge ar in good time on long
and steep downhill gradients. Take particular
no te ofthis when driving a laden vehicle. By
doing so, you will make use of the engine's brak‐
ing ef fect. This relie vesth e load on the brake
sy stem and pr events the brakes from overheat‐
ing and wearing tooqu ickl y.
Do not use cruise control in thefo llowing situa‐
tions:
R In traf fic situations whi chrequ ire frequent
ch anges of speed, e.g. in heavy traf fic, on
winding roads.
R On slippe ryroads. Accelerating can cause
th e drive wheels tolose traction and the
ve hicle could then skid.
R Ifyo u are driving when visibility is poor.
Fu nction of the limi ter
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 speed limits, e.g. in built-up
areas.
R Perm anen t:for long-term speed restrictions,
e.g. when driving in winter tyre mode.
The variable limiter is operated using the cor re‐
sponding steering wheel buttons. You can store
any road speed abo ve20 km/h up tothe maxi‐
mum road speed or tothe set winter tyre limit.
Yo u can also per form settings while theve hicle
is stationary if theve hicle has been star ted.
If yo ufa ilto adapt your driving style, the limiter
can neither reduce therisk of an accident nor
ov erride the la wsof ph ysics. It cannot take into
account road, weather or traf fic conditions. The
limiter is only an aid. You are responsible for
maintaining a safe dis tance totheve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane.
Displa ysinthe Instrument Display
The status of the limiter and thestored speed
are shown in the multifunction displa y. Driving and pa
rking 197

1
Limiter is selected
2 Speed is stored, limiter is deactivated
3 Speed is stored, limiter is activated
% The segments in the speedome ter light up,
up tothe cur rently stored speed.
% When the driving speed is greater than the
st ored speed, display 3flashes.
Kickd own
If yo u depress the accelerator pedal be yond the
pressure point (kickdown), the limiter switches
to passive mode. The Limiter passivemessage
appears on the multifunction displa y.Af
ter completion of kickdown, theva riable lim‐
iter is activated again in thefo llowing situations:
R Ifth e driven speed drops below thestored
speed.
R Ifth estored speed is called up.
R Ifyo ustore a new speed.
Operating cruise control or theva riable lim‐
iter &
WARNING Risk of accident due tostored
speed
If yo u call up thestored speed and this is
lo we rth an your cur rent speed, theve hicle
decelerates. #
Take into account the tra ffic situation
before calling up thestored speed. Re
quirements:
Cruise control
R Cruise control is selected.
R ESP ®
must be activated, but not inter vening.
R The driving speed is at least 20 km/h. R
The transmission is in position h.
Va riable limiter:
R The vehicle has been star ted.
R The variable limiter is selec ted.
Switching between cruise control and the
va riable limi ter 19 8
Driving and pa rking

#
Toselect cruise control: pressrocker
switch 1up. #
Toselect theva riable limi ter: press rocker
switch 1down.
% Vehicles with Active Dis tance Assi st
DISTRONIC: theva riable limiter is selec ted
by a dif fere nt button (→ page 202).
Ac tivating cruise control or the variable lim‐
iter #
Press rocker switch 2up (SET+) or down
(SET-).
The cur rent driven speed is stored and theve hi‐
cle maintains this speed (cruise control) or does
not exceed it (limiter).
Increasing/decreasing thesto red speed #
Press rocker switch 2up/down tothe pres‐
sure point.
The stored speed is increased or reduced by
1 km/h.
or #
Press and hold rocker switch 2up/down to
th e pressure point.
The stored speed is increased or reduced in
increments of 1 km/h.
or #
Press rocker switch 2beyond the pressure
point.
The stored speed is increased or reduced by
10 km/h.
or #
Press rocker switch 2beyond the pressure
point and hold.
The stored speed is increased or reduced in
increments of 10km/h.
or #
Accelerate theve hicle tothe desired speed. #
Press rocker switch 2up.
Ad opting the de tected speed
If cruise control/ variable limiter is activated and
Speed Limit Assist or Traf fic Sign Assi sthas
de tected a speed restriction sign wi tha maxi‐
mum permissible speed and this is displa yed in
th e instrument clus ter: #
Press rocker switch 3up.
The maximum permissible speed shown by
th e traf fic sign is stored and theve hicle
maintains or does not exceed this speed.
Deactivating cruise control or theva riable
limi ter #
Press rocker switch 3(CNCL) down.
When cruise control or theva riable limiter is
deactivated, rocker switch 2(SET+) or (SET-)
sa ve sth e cur rently driven speed and theve hicle
maintains this speed. When rocker switch 3
(RES) is pressed, the speed last stored is called
up and theve hicle maintains this speed.
% Ifyo u brake, deactivate ESP ®
or if ESP ®
inter venes, cruise control is deacti vated. The
va riable limiter is not deactivated.
When you swit choff theve hicle, the last
speed stored is cleared.
% When you activate cruise cont rol or Active
Dis tance Assi stDISTRONIC, the last speed
st ored forth eva riable limiter is cleared. Driving and parking
19 9

Wa
rning when the maximum permissible
speed is exceeded
The sy stem can warnyou if you unin tentional ly
exc eed the maximum permissible speed. Todo
th is, you can specify in the multimedia sy stem
by how much the maximum permissible speed
can be exceeded before a warning is issued. Yo u
can specify whe ther thewa rning is tobe just a
visual warning or an acoustic one as well.
Display in the Instrument Display 1
Perm issible speed
2 Perm issible speed when there is a restriction
3 Additional sign with restriction %
The illu stra tion sho wsthe Instrument Display
in theWi descreen Cockpit
Sy stem limitations
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, high lyvariable
shade conditions, 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 ere is dirt on the windscreen in the vicin‐
ity of the multifunction camera or the camera
is mis ted up, damaged or obscured.
R Ifth e traf fic signs are ha rdtodetect, e.g. due
to dirt or sno w,or because they are co vered
or due toinsuf ficient lighting.
R Ifyo u turn sharpl y,yo u may pass traf fic signs
th at are outside the camera's field of vision. Setting Speed Limit Assist
Multimedia sy
stem:
, © .
Settings .
Assis-
tance .
Speed Limit Assist
Displaying de tected traf fic signs in the
medi a display #
Select Display in head unit. #
Activate or deacti vate the function.
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.
% When DISTRONIC, cruise control or theva ri‐
able limiter are activated, the speed de tec‐
te d can be adop ted as the speed limit
(→ page 202).
Speed Limit Assist is only an aid. The driver is
re sponsible forke eping a safe dis tance tothe 234
Driving and parking

Multimedia sy
stem:
, © .
Settings .
Assistance .
Traf-
fic Sign Assist
Ac tivating/deactivating automatic adoption
of speed limits #
Select Adopt limit . #
Activate or deacti vate the function.
The speed limits de tected byTraf fic Sign
Assi stare automatically adop tedby Active
Dis tance Assi stDISTRONIC.
% When DISTRONIC, cruise control or theva ri‐
able limiter are activated, the speed de tec‐
te d can be manually adop ted as the speed
limit (→ page 202).
Displaying de tected traf fic signs in the
media display #
Select Display in head unit .#
Activate or deacti vate the function.
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. Blind Spot Assist and
Active Blind Spot
Assi stwith exitwa rning Fu
nction of Blind Spot Assist and Active
Blind Spot Assi stwith exitwa rning
Blind Spot Assist and Active Blind Spot Assi st
use two lateral, rear-facing radar sensors to
monitor the area up to40 m behind your vehicle
and 3 m directly next to yourvehicle.
If a vehicle is de tected at speeds ab ove appr ox‐
imately 12km/h and this vehicle subsequently
enters the monitoring range di rectly next to your
ve hicle, thewa rning lamp in the outside mir ror
lights up red.
If a vehicle is de tected close tothe side of your
ve hicle, there dwa rning lamp in the outside mir‐
ro rflashes. If you swit chon the turn signal indi‐
cator in the cor responding direction, a warning to
ne sounds once. If the turn signal indicator
re mains switched on, all other de tected vehicles
are indicated only bytheflashing of thered
wa rning lamp.
If yo uove rtake a vehicle quickl y,no warning is
given. &
WARNING Risk of accident despi teBlind
Spot Assi st
Blind Spot Assi stdoes not react tovehicles
approaching and overtaking you at a greatly
di fferent speed.
As a result, Blind Spot Assist cannot warn
drivers in this situation. #
Alw ays pay careful attention tothe traf‐
fi c situation and maintain a safe dis‐
ta nce at the side of theve hicle. Blind Spot Assist and
Active Blind Spot Assi st
are on lyaids. They may failto detect some vehi‐
cles and are no substitute for attentive driving.
Alw ays ensure that there is suf ficient di stance to
th e side forot her road users and obs tacles. Driving and pa
rking 237