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St
andby mode (extension of the star ter bat‐
te ry 's period out of use) St
andby mode function
If standby mode is activated, theve hicle can be
par kedfo r an extended pe riod of time without
losing po wer.
St andby mode is characterised bythefo llowing:
R thest ar ter battery is preser ved.
R the maximum period out of use is displa yed
in the multimedia sy stem displa y.
R functions such as interior pr otection or tow-
aw ay protection are not available.
R the connection toonline services is inter rup‐
te d.
If th efo llowing conditions are fulfilled, standby
mode can be activated or deactivated using the
multimedia sy stem:
R the engine is switched off.
R the ignition is switched on.
Exceeding theve hicle's displa yed period out of
use may cause incon venience, i.e. it cannot be guaranteed
that thest ar ter battery will reliably
st art the engine.
The star ter battery must be charge dfirs t in the
fo llowing situations:
R theve hicle's period out of use must be
ex tended.
R theBattery charge insufficient for standby
mode message appears in the multimedia
sy stem displa y.
% Standby mode is automatically deactivated
when the ignition is switched on.
Ac tivating or deactivating standby mode
Multimedia sy stem:
, Vehicle .
î Vehicle set-
tings .
Standby mode #
Activate Oor deacti vate ª the function.
When you activate the function, a prom pt
appears. #
Select Yes.
St andby mode is activated. Driving and driving saf
ety sy stems Driving sy
stems and your responsibility Yo
ur vehicle is equipped with driving sy stems
which assist you in driving, parking and manoeu‐
vring theve hicle. The driving sy stems are aids
and do not relie ve you of your responsibility. Pay
attention tothe tra ffic conditions at all times
and inter vene when necessa ry. Be aware of the
limitations rega rding the safe use of these sys‐
te ms. 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 thera diator grille. Keep these
parts free of dirt, ice and slush (→ page 358).
The sensors must not be co vered, forex ample
by bicycle rack s, ove rhanging loads or radar-
re flecting sticke rs.Fo llowing an impact and in 16 6
Driving and pa rking
Page 170 of 521

th
eeve nt of associated dama ge, which may not
be visible, tothe bumpers or radiator grille, ha ve
th e function of thera dar sensors checked at a
qu alified specialist workshop. The driver assis‐
ta nce sy stem may no longer workproperly. 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 201)
R ABS (Anti-lock BrakingSystem) (→ page167)
R Distance Pilot DISTRONIC (→ page 180)
R Adaptive brake lights (→ page177)
R AIR BODY CONTROL (→ page191)
R Active Brake Assi st (→page 172)
R Active Lane Keeping Assist (→ page215)
R ATTENTION ASSIST (→ page 209)
R BAS (Bra keAssist System) (→ page168)
R DYNA MIC BODY CONTROL (→ page191) R
EBD ( Electronic Brakeforc eDistribution)
(→ page 171)
R ESP ®
(Electronic Stability Program)
(→ page 168)
R Hill Start Assist (→ page189)
R HOLD function (→ page190)
R STEER CONTROL (→ page 172)
R Steering Pilot (→ page187)
R Limi ter (→ page 177)
R Parking Pilot (→ page 204)
R Parking Assist PARKTRONIC(→ page194)
R Reversing camera (→ page198)
R Cruise control (→ page 177)
R Blind Spot Assi stand Active Blind Spot Assi st
( → page 213)
R Traf fic Sign Assi st (→page 210) Fu
nctions of ABS (anti-lock braking sy stem) ABS
regulates the brake pressure in critical driv‐
ing situations:
R During braking, e.g. at maximum full-s top
braking or insuf ficient traction of the tyres,
th e wheels are pr evented from blocking.
R Vehicle steerability while braking is ensured.
If ABS inter venes when braking, you will feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road
conditions and can ser veas a reminder totake
ex tra care while driving.
Sy stem limitations
R ABS is active from speeds of appr ox.
8 km/h.
R ABS may be impai red or may not function if a
malfunction has occur red and theye l‐
low ! ABSwarning lamp lights up contin‐
uously in the instrument clus ter af terthe
engine is star ted. Driving and parking
167
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Fu
nction of BAS (Brake Assist Sy stem) &
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assi stSys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an emergency braking situation is
increased. #
Dep ress the brake pedal with full force
in emer gency braking situations. ABS
pr eve nts the wheels from locking. BA
S suppo rts yo ur eme rgency braking situation
with additional brake forc e.
If yo u depress the brake pedal quickl y,BA S is
acti vated:
R BAS au tomatical lyboosts the brake pres‐
sure.
R BAS can sho rten the braking dis tance.
R ABS pr events the wheels from locking.
The brakes will function as usual once you
re lease the brake pedal. BAS is deactivated. Fu
nctions of ESP ®
(Electronic Stability Pro‐
gr am) &
WARNING Risk of skidding if ESP ®
is
malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ry
out vehicle stabilisation. In addition, other
driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified spe‐
cialist workshop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ry
out vehicle stabilisation. #
ESP ®
should on lybe deactivated in the
fo llowing situations. ESP
®
monitors and impr oves driving stability and
traction, particular ly inthefo llowing situations:
R When pulling away on wet or slippe ryroads. R
When braking.
R Vehicles with trailer hitch: In trailer opera‐
tion from speeds of 65 km/h, if theve hicle/
trailer combination begins tosw ay from side
to side.
R Instro ng sidewinds when you are driving
fa ster than 80 km/h.
ESP ®
can stabilise theve hicle byinter vening in
th efo llowing ways:
R One or more wheels are braked.
R The engine output is adap ted according to
th e situation.
ESP ®
is deactivated if the ESP ®
OFF å warn‐
ing lamp lights up continuously in the instrument
clus ter:
R Driving stability will no lon ger be impr oved.
R Vehicles with trailer hitch: Stabilisation of
th eve hicle/trailer combination is no longer
active.
R Crosswind Assist is no longer active.
R The drive wheels could spin. 16 8
Driving and pa rking
Page 172 of 521

R
ETS/4ETS traction control is still active.
% Even when ESP ®
is deactivated, you are still
assis tedby ESP ®
when braking.
ESP ®
is inter vening if the ESP ®
÷ warning
lamp flashes in the instrument clus ter:
R Do not deacti vate ESP ®
.
R Only depress the accelera tor pedal as far as
is necessar y.
R Adapt your driving style to suit the cur rent
ro ad and weather conditions.
Deactivate ESP ®
in thefo llowing situations to
impr ovetraction:
R When using snow chains R
In deep sn ow
R On sand or gr avel
% Spinning the wheels results in a cutting
action which pr ovides better grip.
ESP ®
is deactivated if theå ESP®
OFF warn‐
ing lamp lights up continuously in the instrument
clus ter.
If th e ESP ®
÷ warning lamp lights up continu‐
ousl y,ESP ®
is not available due toa malfunction.
Obse rve any information which may be displa yed
in the instrument clus ter:
R Warning and indicator lamps (→ page 463)
R Display messages (→ page419) ETS/4ETS (Electronic
Traction Sy stem)
ETS/4E TStraction control is pa rtof ESP ®
.
ETS/4ETS can impr ovetheve hicle's traction by
inter vening in thefo llowing ways:
R The drive wheels are braked individually if
th ey spin.
R More drive torque is transferred tothe wheel
or wheels with traction.
Influence of drive prog rams on ESP ®
The drive prog rams enable ESP ®
to adapt todif‐
fe re nt we ather and road conditions as well as
th e driver's prefer red driving style. You can
select the drive prog rams using theDY NA MIC
SELECT switch. Driving and parking
16 9
Page 173 of 521
ESP
®
ch aracteristics per drive prog ramDrive prog
ram
ESP®
mode Cha
racteristics
C (Comfort)
E (Economy) ESP
®
Comfort These drive prog
rams pr ovide the ideal balance
between traction and stabilit y.
Select drive program Eor Cin di fficult road con‐
ditions, such as in sn owor ice, or when thero ad
is we t from rain.
S (Sport)
ESP®
Sport This drive program continues
toofferst ability
but with a sporty setup which allo wsthe enthu‐
siastic driver a more active driving style.
Only select drive prog ram Sin good road condi‐
tions, forex ample on dry car riag ewa ysand clear
st re tches of road.
S+ (Sport Plus)
ESP®
Spo rtPlus The
vehicle's own under steering and overste er‐
ing characteristics are accentuated. This allo ws
a more active driving style to be adop ted.
Only select drive prog ram S+ in good road con‐
ditions, forex ample on dry car riag ewa ysand
clear stre tches of road. 17 0
Driving and pa rking
Page 174 of 521

Ac
tivating/deactivating ESP ®
(Electronic Sta‐
bility Prog ram) Multimedia sy
stem:
, Vehicle .
k Assistance .
ESP #
Activate Oor deacti vate ª the function.
ESP ®
is deactivated if theå ESP®
OFF warn‐
ing lamp lights up continuously in the instrument
clus ter.
Obser vethe information on warning lamps and
display messages which may be shown in the
instrument clus ter. Fu
nctions of ESP ®
Crosswind Assist ESP
®
Crosswind Assist de tects sudden gu sts of
side wind and helps the driver tokeep theve hi‐
cle in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds between 80 km/h and 200 km/h
when driving stra ight ahead or cornering
slight ly. R
The vehicle is stabilised bymeans of individ‐
ual brake application on one side. Fu
nctions of ESP ®
trailer stabilisation &
WARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot pr event lu rching of
th eve hicle/trailer combination. Trailers with
a high centre of grav ity may tip over before
ESP ®
de tects this. #
Alw ays adapt your driving style to suit
th e cur rent road and weather condi‐
tions. When driving with a trailer, ESP
®
can stabilise
yo ur vehicle if the trailer begins toswer vefrom
side toside:
R ESP ®
trailer stabilisation is active abo ve
speeds of 65 km/h. R
Slight swerving is reduced bymeans of a tar‐
ge ted, individual brake application on one
side.
R Intheeve nt of se vere swerving, the engine
output is also reduced and all wheels are
braked.
ESP ®
trailer stabilisation may be impaired or
may not function if:
R The trailer is not connec ted cor rectly or is
not de tected prope rly by theve hicle. Fu
nction of EBD (Electronic Brake forc e Dis‐
tribution) EBD is
characterised bythefo llowing:
R Monitoring and regulating the brake pressure
on there ar wheels.
R Impr oved driving stability when braking,
especially on bends. Driving and parking
171
Page 175 of 521

Fu
nction of STEER CONT ROL ST
EER CONTROL helps youby transmitting a
noticeable steering forc eto thesteering wheel in
th e direction requ ired forve hicle stabilisation.
This steering recommendation is given pa rticu‐
larly in thefo llowing situations:
R Both right wheels or bo thleft wheels are on
a we t or slippe ryroad sur face when you
brake.
R The vehicle starts toskid.
Sy stem limitations
ST EER CONTROL may be impaire d or may not
function in thefo llowing situations:
R ESP ®
is deactivated.
R ESP ®
is malfunctioning.
R The steering is malfunctioning.
If ESP ®
is malfunctioning, you will be assis ted
fur ther by the electric po werst eering. Fu
nction of Active Brake Assi st Ac
tive Brake Assi stconsi sts of:
R Distance warning function
R Autonomous braking function
R Situation-dependent braking assi stance
R Vehicles with Driving Assistance Pack‐
age: Evasi veSteering Assist
Ac tive Brake Assi stcan help youto minimise the
ri sk of a collision with vehicles or pedestrians or
to reduce the ef fects of su cha collision.
If Ac tive Brake Assi sthas de tected a risk of colli‐
sion, you will be warned visually and acousti‐
cally.
If yo u do not react tothe visual or acoustic warn‐
ing, autonomous braking can be initiated in criti‐
cal situations.
In especially critical situations, Active Brake
Assi stcan initia teautonomous braking direct ly.
In this case, the visual and acoustic warning
occurs simultaneously with the braking applica‐
tion. If
yo u apply the brake yourself in a critical situa‐
tion or apply the brake during autonomous brak‐
ing, situation-dependent braking assis tance
occu rs. The brake pressure increases up tomax‐
imum full-s top braking if necessar y.
If th e autonomous braking function or the situa‐
tion-dependent braking assis tance is trig gered,
additional pr eventive measures for occupant
pr otection (PRE-SAFE ®
) may also be initiated, if
th eve hicle is equipped with these. &
WARNING Risk of an accident caused by
limited de tection per form ance of Active
Brake Assi st
Ac tive Brake Assi stcannot al ways clearly
identify objects and compl extraf fic situa‐
tions.
In su chcases, Active Brake Assi stmight:
R Give a warning or brake without reason
R Not give a warning or not brake #
Alw ays pay careful attention tothe traf‐
fi c situation; do not rely on Active Brake
Assi stalone. Active Brake Assi stis only 17 2
Driving and pa rking
Page 176 of 521

an aid. The driver is
responsible for
maintaining a suita ble distance tothe
ve hicle in front, vehicle speed and for
braking in good time. #
Be prepared tobrake or swer veif nec‐
essar y. Also obser
vethe sy stem limitations of Active
Brake Assi st. The individual subfunctions are
available in
th efo llowing speed ranges:
Distance warning function
The dis tance warning function issues a warning
at speeds:
R From appr oximately 30 km/h, if over se veral
seconds the dis tance maintained totheve hi‐
cle tr avelling in front is insuf ficient forthe driven speed. The
·distance warning
lamp then lights up in the instrument clus ter.
R From appr oximately 7 km/h, if your vehicle
is critically close toave hicle or pedestrian.
An intermittent warning tone sounds and the
· distance warning lamp lights up in the
instrument clus ter.
Brake immediately or take evasive action, pr ovi‐
ded it is safe todo so and the traf fic situation
permits.
The distance warning function can aid you in thefo llowing situations with an intermit tent wa rning tone and a warning lamp: Ve
hicles tr avelling in
front St
ationary vehicles Crossing vehicles Crossing pedestrians Stationary pedes‐
trians
Ve hicles without Driv‐
ing Assis tance pa ck‐
age up
toappr ox.
250 km/h up
toappr ox. 80 km/h no reaction uptoappr ox. 60 km/h no reaction
Ve hicles with Driving
Assis tance pa ckage up
toappr ox.
250 km/h up
toappr ox.
10 0 km/h up
toappr ox. 70 km/h up toappr ox. 70 km/h up toappr ox. 70 km/h Driving and pa
rking 17 3