0071WARNING Risk of accident due tothe
brake sy stem overheating
If yo u lea veyour foot on the brake pedal
when driving, the brake sy stem may over‐
heat.
This increases the braking dis tance and the
brake sy stem may evenfa il.
00BBNe ver use the brake pedal as a foot re st.
00BBDo not depress the brake pedal and the
accelerator pedal at the same time
while driving.
0075 NO
TEWearing out the brake linings by
continuously dep ressing the brake pedal
00BBDo not depress the brake pedal contin‐
uously whilst driving.
00BBTo use the braking ef fect of the engine,
shift toa lo werge ar in good time.
0075 NO
TEDama getothe driv etra in and the
engine when pulling away
00BBDo not warm upthe engine when the
ve hicle is stationar y.Pull away immedi‐
atel y.
00BBAvoid high engine speeds and driving at
full thro ttle until the engine has reached
operating temp erature.
00BBDo not allow the wheels tospin.
0075 NO
TEDama getothe catalytic con verter
due tonon-combu sted fuel
The engine is not running smoot hly and is
misfiring.
Non-combus ted fuel may get into the cata‐
lytic con verter.
00BBOnly depress the accelera tor pedal
slightl y.
00BBHave the cause rectified immediately at
a qu alified specialist workshop.
Limited braking ef fect on salt-treate dro ads:
Rdue tosalt build-up on the brake discs and
brake lining, the braking dis tance can
increase conside rably or result in braking
only on one side.
Rmaintain a much greater safe dis tance tothe
ve hicle in front.
To preve nt salt build-up:
Rbrake occasionally while paying attention to
th e tra ffic conditions.
Rcarefully depress the brake pedal at the end
of the journey and when starting the next
journe y.
ECOstart/s top function
Opera ting the ECO start/s top function
The engine is au tomatically switched off if the
fo llowing conditions are me t:
RYoubr ake theve hicle toast andstill in trans‐
mission position 005Bor005C.
RAll vehicle conditions for an au tomatic
engine stop are met.
13 6
Driving and pa rking
The00D6 symbol appears in the multifunction
display when theve hicle is stationar y.
The engine is restar ted automatically if:
RYo ure lease the brake pedal in transmission
position 005Bwhen the HOLD function is not
active.
RYo u shift from transmission position 005D.
RYou enga getransmission position 005Bor005E.
RYoudepr essthe accelerator pedal
RYo uch ange theve hicle le vel.
RYo u open or close the soft top.
RAn automatic engine start is necessar y.
If th e engine was switched off bythe ECO start/
st op function and you lea vetheve hicle, a warn‐
ing tone sounds. The 9 H K L F O H 2 S H U D W L R Q D O 6 Z L W F K
W K H , J Q L W L R Q 2 I I % H I R U H ( [ L W L Q J displaymessage
also appears in the multifunction displa y.Ifyo u
do not switch off the ignition, the ignition is
automatically switched off af ter one minute. Deactivating or activating
the ECO start/
sto p function
00BBPress button 1.
If indicator la mp2lights up, the ECO start/
st op function is switched on.
00CE Depending on the model, the button may
also be located at a dif fere nt position in the
center console.
Fu nction of the ECO display
The ECO display summarizes the driving style
from thest art of the journey toits completion
and assists you in achieving the most economi‐
cal driving style.
Yo u can influence consum ption if you:
Rdrive wit h particular care
Rdriv eth eve hicle in drive program E
Robservethege arshift recommendations
The inner segment lights up green and the outer
segment fills up:
R1 Moderate acceleration
Driving and parking 13
7
The electric parking brake is applied ifthe trans‐
mission is in position 005Dand one of thefo llow‐
ing conditions is fulfilled:
RThe engine is switched off.
RThe seat belt tongue is not inser ted in the
seat belt buckle of the driver's seat and the
driver's door is opened.
00CE Toprev ent application: pull the handle of the
electric parking brake.
In thefo llowing situations, the electric parking
brake is also engaged:
RAc tive Dis tance Assist DISTRONIC is bringing
th eve hicle toast andstill.
RThe HOLD function is keeping theve hicle sta‐
tionar y.
RActive Parking Assist is keeping theve hicle
st ationar y.
This is only the case if one of thefo llowing con‐
ditions is also fulfilled:
RThe engine is switched off.
RThe seat belt tongue is not inser ted in the
seat belt buckle of the driver's seat and the
driver's door is opened.
RThere is a sy stem malfunction.
RThe po wer supply is insuf ficient.
RThe vehicle is stationary for a lengt hyperiod.
When the electric parking brake is applied, the
0049 (USA) or 0024(Canada) indicator lamp
lights up in the instrument clus ter.
The electric parking brake is not automatically
applied if the engine is switched off bythe ECO
st art/ stop function.
Electric parking brake function (releasing
automatically)
The electric parking brake is released when the
fo llo wing c
onditions are fulfilled:
RThe engine is
running.
RThe seat belt tongue is inser ted into the seat
belt buckle of the driver's seat.
RThe transmission is in position 005Bor005E and
yo u depress the accelera tor pedal or you shift from transmission position
005Dto005B or
005E.
RIf th e transmission is in position 005E,the
trunk lid must be closed.
If th e seat belt tongue is not inser ted into the
seat belt buckle of the driver's seat, thefo llow‐
ing conditions must be fulfilled:
RThe driver's door is closed.
RYo u mo vethe transmission out of transmis‐
sion position 005Doryou ha veprev iously
driven faster than 2 mph (3 km/h).
RIfth e transmission is in position 005E,the
trunk lid must be closed.
If th e electric parking brake is released, the
0049 (USA) or 0024(CANADA) indicator lamp in
th e instrument clus ter goes out.
Driving and parking 15
1
Overview of driving systems and driving
saf ety sy stems
In this section, youwill find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R360° Camera (→page 181)
RABS ( Anti-lock Braking Sys tem)
(→page 154)
RAc tive Dis tance Assist DISTRONIC
(→pa ge 162)
RAIR BODY CONTROL (→page 171)
RAc tive Brake Assi st(→page 156)
RAc tive Lane Keeping Assist (→page 195)
RATTENTION ASSIST (→page 189)
RBA S (Brak eAssist System) (→page 154)
REBD ( Electronic Brakeforc eDistribution)
(→page 155)
RESP®(E lectronic Sta bility Program)
RHill Start Assist
RHOLD function (→page 170)
RSTEER CONTROL (→page 155)
RAc tive Steering Assist (→page 167)
RAc tive Parking Assist (→page 184)
RParking Assist PARKTRONI C (→page17 5)
RRe ar view camera (→page 178)
RCruis e control (→page 160)
RBlind Spot Assist and Active Blind Spot Assi st
(→page 193)
RTraf fic Sign Assist (→page191)
Fu nctions of ABS (Anti-lock Brake Sy stem)
ABS regulates the brake pressure in critical driv‐
ing situations:
RDuring braking, e.g. at maximum full-s top
braking or insuf ficient traction of the tires,
th e wheels are pr evented from blocking.
RVehicle 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
RABS is active from speeds of appr ox. 5 mph
(8 km/h).
RABS may be impaired or may not function if a
malfunction has occur red and theye l‐
low 0025 ABSwarning lamp lights up contin‐
uously in the instrument clus ter af terth e
engine is star ted.
Fu nction of BAS (Brake Assist Sy stem)
0071
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assist Sys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an eme rgency braking situation is
increased.
00BBDepress the brake pedal with full forc e
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.
15 4
Driving and pa rking
Ifyo udepr essthe brake pedal quickl y,BA S is
acti vated:
RBA S au tomatical lyboosts the brake pres‐
sure.
RBA S can short enthe braking dis tance.
RABS pr events the wheels from locking.
The brakes will function as usual once you
re lease the brake pedal. BAS is deactivated.
Activating/deactivating ESP®(Electronic Sta‐
bility Prog ram)
Multimedia sy stem:
0086 9 H K L F O H00CFk $ V V L V W D Q F H00CF ( 6 3
00BBActivate 0073or deacti vate 0053 the function.
ESP
®is deactivated if the00BB ESP®OFFwarn‐
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 gust s of
side wind and helps the driver tokeep theve hi‐
cle in the lane:
RESP®Crosswind Assist is active at vehicle
speeds between 50 mph(8 0 km/h) and
12 5mp h(2 00 km/h) when driving stra ight
ahead or cornering slightly .
RThevehicle is stabilized bymeans of individ‐
ual brake application on one side.
Fu nction of EBD (Electronic Brake forc e Dis‐
tribution)
EBD is characterized bythefo llowing:
RMonitoring and regulating the brake pressure
on there ar wheels.
RImpr oved driving stability when braking,
especially on bends.
ST EER CONT ROL function
STEER CONTROL helps youby transmitting a
noticeable steering forc eto thesteering wheel in
th e direction requ ired forve hicle stabilization.
This steering recommendation is given part icu‐
larly in thefo llowing situations:
RBo th right wheels or bo thleft wheels are on
a we t or slippe ryroad sur face when you
brake.
RThe vehicle starts toskid.
Sy stem limitations
ST EER CONTROL may be impaire d or may not
function in thefo llowing situations:
RESP®is deactivated.
RESP®is malfunctioning.
RThe steering is malfunctioning.
If ESP
®is malfunctioning, youwill be assis ted
fur ther by the electric po werst eering.
Driving and parking 15
5
Function of Active Brake Assi st
Active Brake Assi stconsist s of:
RDistance warning function
RAu tonomous braking function
RSituation-dependent braking assist ance
RVehicles with Driving Assistance Pack‐
age: Evasi veSteering Assist
Ac tive Brake Assi stcan help youto minimize the
ri sk of a collision with vehicles or pedestrians or
to reduce the ef fects of such a collision.
If Ac tive Brake Assi sthas de tected a risk of colli‐
sion, youwill be warned visually and acousti‐
cally.
If yo udo not react tothe visual and audible colli‐
sion warning, autonomous braking can be initi‐
ated in critical situations.
In especially critical situations, Active Brake
Assi stcan initiate autonomous 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 ina critical situa‐
tion or apply the brake during autonomous brak‐
ing, situation-dependent braking assis tance
occurs . This increases the brake pressure up to
maximum 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.
0071
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 complex traffic situa‐
tions.
In such cases,Active Brake Assi stmight:
RGive a warning or brake without reason
RNot give a warning or not brake
00BBAlw ays pay careful attention tothe traf‐
fi c situation; do not rely on Active Brake
Assi stalone. Active Brake Assi stis only
an aid. The driver is responsible for
maintaining a sui table dis tance tothe
ve hicle in front, vehicle speed and for
braking in good time.
00BBBe 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:
RFr om appr oximately 4 mph (7 km/h), if your
ve hicle is critically close toave hicle or
pedestrian. An intermittent warning tone
sounds and the00BA 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
allo wsthis.
15 6
Driving and pa rking
0071WARNING Risk of an accident despite
Evasive Steering Assist
Evasive Steering Assist cannot always clearly
identify objects and complex traf fic situa‐
tions.
In addition, thesteering support of Evasive
St eering Assist is general lynot suff icientto
avo id a collision.
In such cases Evasive Steering Assist can:
Rgive an unnecessary warning or pr ovide
assis tance
Rnot give awa rning or not pr ovide assis‐
ta nce
00BBAlw ays pay careful attention tothe traf‐
fi c situation; do not rely on Ev asive
St eering Assist alone.
00BBBe ready tobrake and take evasive
action if necessar y.
00BBPreve ntthe assis tance byactively steer‐
ing in non-critical driving situations.
00BBDrive at an appropriate speed if pedes‐
trians are close tothe path of your vehi‐
cle.
Also obser vethe sy stem limitations of Evasive
St eering Assist.
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing situations:
RIn sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
RIf th e sensors are dirty, mis ted up, damaged
or co vered.
RIfth e sensors malfunction due to otherradar
source inter fere nce, forex ample stro ng radar
re flections in parking garage s.
RIf a loss of tire pressure or a defective tire
has been de tected and displ ayed.
The sy stem may not react cor rectly:
RIn complex traffic situations whe reobjects
cannot always be clearly identified.
RTo pedestrians or vehicles if they mo ve
qu ickly into the sensor de tection range.
RTo pedestrians who are hidden by other
objects.
RIf th e typical outline of a pedestrian cannot
be distinguished from the bac kground.
RIf a pedestrian isnot recognized as such , e.g.
due tospecial clo thing or other objects.
ROn bends with a tight radius.
Setting Active Brake Assi st
Multimedia system:
0086 9 H K L F O H00CFk $ V V L V W D Q F H00CF $ F W L Y H
% U D N H $ V V L V W
Ve hicles without Driving Assistance pack‐
age: The settings can be made af terst arting the
ve hicle.
Ve hicles with Driving Assistance pac kage:
The settings can be made when the ignition is
switched on.
00CE It is recommended that you alw ays lea ve
Ac tive Brake Assi stactivated.
Driving and parking 15
9
RActive Dis tance Assist DISTRONIC is acti va‐
te d.
RIfth e driving speed is higher than 45 mph
(70 km/h).
RIf th e driven speed drops below thestored
speed.
RThe sy stem cannot detect a vehicle in there l‐
ev ant area of theove rtaking lane.
Ve hicles with Driving Assistance Package
and Traf fic Sign Assis t:Ac tive Dis tance Assist
DISTRONIC also has theAc tive Speed Limit
Assi stfunction. This function can be configure d
in the multimedia sy stem. If a change in the
speed limit is de tected and Active Dis tance
Assist DISTRONIC is acti vated, Ac tive Dis tance
Assist DISTRONIC assumes this new speed.
The driven speed is adap ted when theve hicle is
le ve l with the tra ffic signs. The speed limit dis‐
play in the Instrument Display is alw ays update d
when theve hicle is le vel with the tra ffic sign.
If Ac tive Dis tance Assist DISTRONIC has been
put into passive modebypressing the accelera‐ to
r pedal, only speed limits which are higher
th an the set speed are adop ted.
Pulling the cruise control le ver will set the dis‐
pla yed speed limit as the speed, pr ovided that:
RAc tive Speed Limit Assi sthas been activated
in the multimedia sy stem and
RAc tive Dis tance Assist DISTRONIC has been
acti vated.
If no speed limit is displa yed when the 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 Active Dis tance
Assist DISTRONIC. Depending on which drive
prog ram is selected, the driving characteristics
can be geared towa rds fuel econom y,comfort or
dynamic per form ance (
→page 138).
Sy stem limitations
Ve hicles with the Driving Assistance Pack‐
age: Active Dis tance Assist DISTRONIC is acti ve
in the 0 mph(0 km/h) to130mp h(210 km/h)
speed range. The sy
stem may be impaired or may not function
in thefo llowing ins tances, forex ample:
RIn snow ,ra in, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
RThe windshield in the area of the camera is
dirty, mis ted up, damaged or co vered.
RIfth era dar sensors are dirty or co vered.
ROn slippery roads, braking or accelerating
can cause the drive wheels tolose traction
and theve hicle could then skid.
RIn parking garage s,tollst ations or on roads
with steep uphill or downhill gradients.
Do not use Active Dis tance Assist DISTRONIC in
th ese situations.
Tips
Pa yparticu
la rattention in thefo llowing traf fic
situations. In such situations, brake if necessar y.
Ac tive Dis tance Assist DISTRONIC is then deacti‐
va ted:
RWhen cornering, entering and exiting a bend.
RWhen not driving in the center of the lane.
Driving and parking 16
3