trunk MERCEDES-BENZ A-CLASS HATCHBACK 2021 Owners Manual

switch o.
the hazard warning lights using the haz-
ard warning button. S
S
t
tar
ar t-o.
t-o. assist
assist F
F
unction of t
unction of t he
hest
star
ar t-o.
t-o. assist
assist
The start-o. assist enables optimal vehicle accel-
eration from a standstill. Forth is, a suitably high-
gr ip road sur face is requ ired, the tyres and vehicle
must also be in good condition.
Do not activate the start-o. assist on public
ro ads.
Be sure toobser vethe saf ety no tes and informa-
tion on ESP ®
(/ page 222).
A
A ctiv ctiv ating t
ating t he
hest
starar t-o.
t-o. assist
assist &
W WARNING ARNING Risk of skidding and having an
accident from wheels spinning
When you use start-o. assist, individual
wheels could spin and you could lose control
of theve hicle.
If ESP ®
is deactivated, there is a risk of skid-
ding and accident! #
Make sure that no persons or obs tacles
are in the close vicinity of your vehicle. #
Deactivating ESP ®
(/ page 224). #
Movethe steering wheel tothe straight-ahead
position. #
Depress the brake pedal /rmly with your leT
fo ot and keep it depressed. #
Engage theh drive position (/ page 185). #
Select the sportiest available drive prog ram
B orC(/ page 179). #
Rapidly depress the accelerator pedal full y. #
Take your foot o. the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accelera-
tion. #
Switch on ESP ®
once the acceleration proce-
dure is comple te. ESP ®
will otherwise not be
able tostabilise theve hicle if theve hicle
starts toskid or a wheel starts tospin.
Cancelling t Cancelling t he
hest
star
ar t-o.
t-o. assist
assist #
Remo veyour foot from the accelerator pedal. #
Reactivate the ESP ®
. A
A
TTENTION ASSIST
TTENTION ASSIST F
F
unction of A
unction of A TTENTION ASSIST
TTENTION ASSIST
AT TENTION ASSIST assists you on long, mono to-
nous journe ys, e.g. on mo torw ays and trunk
ro ads. If ATTENTION ASSIST de tects indicators of
fa tigue or increasing lapses in concentration on
th e part of the driver, it suggests taking a break.
AT TENTION ASSIST is only an aid. It cannot
alw ays de tect fatigue or lapses in concentration in
time. The system is not a substitute for a well-res-
te d and attentive driver. On long journe ys,ta ke
re gular breaks in good time that allow for ade-
qu ate recuperation.
Yo u can choose between two settings:
R St
Standar
andar d:
d:normal system sensitivity.
R Sensitiv
Sensitiv e:
e:higher system sensitivity. The driver
is wa rned earlier and the attention le vel de tec-
te dby ATTENTION ASSIST is ada pted accord-
ingl y.
If dr owsiness or increasing lapses in concent ra-
tion are de tected, theATTENTION ASSIST: Take Driving and parking
227
227

F
F
r
req
eq uency band and maximum tr
uency band and maximum tr ansmission out-
ansmission out-
put
put F
F
r
req
eq uency band
uency band Maximum tr
Maximum transmis-
ansmis-
sion output
sion output
Short wave
3 - 54 MHz 100 W
4 m frequency band
74 - 88 MHz 30 W
2 m frequency band
144 - 174 MHz 50 W
Te rrestrial Trunked
Ra dio (TETRA)
380 - 460 MHz 10 W
70 cm frequency band
420 - 450 MHz 35 W
Tw o-w ayradio
(2G/3G/4G) 10 W The
following can be used in theve hicle without
re strictions:
R two- wayra dios with a maximum transmission
output of up to100 mW
R RF transmitters with transmitter frequencies in
th e 380 - 410 MHz frequency band and a
maximum transmission output of up to2 W
(TETRA)
R mobile phones (2G/3G/4G)
There are no restrictions when positioning the
aerial on the outside of theve hicle forth efo llo w-
ing frequency bands:
R Terrestrial Trunked Radio (TETRA)
R 70 cm frequency band
R 2G/3G/4G R R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation and not
and notes
es R
R egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation of small com
of small compo-
po-
nents
nents Manufacturer information about
radio-based vehi-
cle components can be found using thekey
phrase "Regulatory radio identi/cation" in the Dig- ital Owner's Manual in
theve hicle, on the internet
and in the app. R
R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation – Indonesia
– Indonesia Manufacturer information about
radio-based vehi-
cle components can be found using thekey
phrase "Regulatory radio identi/cation – Indone-
sia" in the Digital Operator's Manual in theve hi-
cle, on the internet and in the app.
% These are not small components. Information
about small components can be found using
th eke y phrase "Regulatory radio identi/cation
of small components". F F
urt
urt her
her com
com ponent-speci/c
ponent-speci/c inf
infor
ormation
mation Fu
rther component-speci/c information can be
fo und using theke y phrase "fur ther component-
speci/c information" in the Digital Owner's Man-
ual in theve hicle, on the internet and in the app. Te
ch nical data
391
391