2010 MERCEDES-BENZ E-CLASS CABRIOLET Owners Manual

ognise danger
sintime, cause an accident and
injur eyoursel fand others.
ATTE NTION ASSIST assesses your level of
fatigu eorlapses in concentration by taking
the following criteria into account:
R your personal driving style, e.g. steering
characteristics
R journey conditions, e.g. time of day and
length of journey
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R if the road condition is poor, e.g. the sur-
face is uneven or there are potholes
R if there is astron gside wind
R if you have adopted asporty driving style
with high cor nering speeds or hig hrates of
acceleration
R if you are predominantly driving slower
than 80 km/ horfaster than 180 km/h
R if you are currently using COMAND APS or
making atelephone call with it
R if the tim ehas been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display Example: vehicles with automatic transmission
X Activate ATTENTION ASSIST using the on-
board computer (Y page 203).
Symbol :appears in the multifunc tion
display.
If ATTENTION ASSIS Tisactive, it wil lnot warn
you until at least 20 minutes after your jour-
ney has begun. You then hear an intermittent warnin
gtonet wice and the Attention
Assist :Time for abreak? message
appears in th emultifunction display.
X If necessary, take abreak.
X Press ato con firm th emessage.
On long journeys, take regula rbreaks in good
time to allow yoursel ftorest properly. If you
do not take abrea kand ATTENTION ASSIST
stil ldetect sfatigue or increasing lapses in
concentration, you will be warned again after
15 minutes at the earliest.
ATTENTION ASSIST is reset when you con-
tinue your journey and start sassessing your
tiredness agai nif:
R you switch off th eengine
R you take off your sea tbelt and open the
driver' sdoor, e.g. for achange of driver sor
to take abreak Spee
dLimit Assist
Impor tant safety guidelines i
Speed Limit Assist is not operational in all
coun tries.
Speed Limit Assist ,inconjunc tion with your
navigation system ,shows you speed limits it
has detec tedint he multifunc tion display. The
display appears when traffic signs stating the
speed limit hav ebeen detected. Example
:
Traffic sign symbol showing the speed
limit
; Traffic sign symbol indicatin gthe end of
the speed limit zone
Speed Limi tAssist detec ts these signs with a
camera at the top of the windscreen. 182
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:
Speed Limi tAssist camera G
Risk of accident
Speed Limit Assis tiso nlyana id and may
detect speed limit sign sincorrectly or not at
all.
The sys temm ay be impaired or may not fun c-
tion if:
R there is poo rvisibility, e.g .due to snow,
rain ,fog or spray.
R there is glare, e.g .fro mt hesun or from
oncomi ngtraffic.
R the windscreen is dirty, misted up or cov-
ered, for instance by asticker, in the vicinity
of the camera.
R the traffic signs are covered, for instance
by dirt, snow or trees.
R the traffic signs are poorly illuminated.
R there are ambiguous traffic signs, for
instance near roadworks or on multi-lane
roads.
Traffic signs always have priority over the
Speed Limit Assist display. Speed Limit Assist
cannot detect road and traffic conditions. It is
not asubstitute for attentive driving.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injure yoursel fand others. Information in the multifunctio
ndisplay Exam
ple:vehicle swith automatic transmission
: Traffic sign symbol showing the speed
limit or traf fics ign symbol indicatin gthe
end of the speed limit zone
; Speed Limi tAssist is available and the
warnin gfunction is switched on in the on-
board computer
= Unit sused in the traf fics ign displayed
X Activate the Speed Limit Assist warning
function using the on-board computer
(Y page 202).
Symbol ;appears. As soon as speed limit
sign/sign indicatin gthe end of aspeed
limit :is detected, the speed limit
appear sint he multifunction displa yfor
approximately fiv eseconds. An yother
information in the multifunction display is
hidden for this period.
or
X Display Speed Limit Assist using the on-
board computer (Y page 202).
As soo nasspeed limit sign/sign indicating
the end of aspeed limit :is detected, the
speed limit appear sint he multifunction
display.
Speed limit sign :showin gthe maximum
permissible speed is generally displayed
until:
R sign :indicatin gthe end of aspeed limit
is detected and displayed for approx-
imately fiv eseconds.
R you mak eaturn.
R you leave or enter acity or town. Drivin
gsystems
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R
the roa dtypec hanges (e.g. mot orway,
country road).
R yo uh avet ravelle dacertainminimum
distanc ewithou tthe roa dsign being
repeated or detec teda gain. Blind Spot Assist
Important safety guidelines Blin
dSpot Assist uses aradar sensor system
to monitor the areas on both sides of your
vehicle. Blin dSpot Assist provides assistance
at speeds higher than 30 km/h. Awarning
display in the exterior mirrors draws your
attention to vehicles in the monitored area. If
you then indicat eaturn toward sthat side
before changing lane, you will also receive
visual and audible collision warnings. For this
purpose, Blind Spot Assist uses sensor sinthe
rea rbumper. G
Risk of accident
Blind Spot Assis tiso nly an aid designe dto
assis tdriving. It may fail to detec tsome vehi-
cles and is no substitute for attentiv edriving.
Blind Spo tAssist can notd etect road and traf-
fic conditions. It may fail to detect narrow
vehicles, such as motor cycles or bicycles ,or
only detec tthem too late.
Monitoring ma ybeaffected by dirty sensors,
stro ngspra yorp oor visibility caused by snow,
rai norm ist, for example. In this case, vehicles
are detected late or not at all.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injur eyoursel fand others.
The radar senso rsystem is automatically
deactivated near radio telescope facilities
(Y page 324).
For Blind Spot Assist to assist you when driv-
ing, the radar sensor syste mmust be activa-
ted (Y page 208 )and operational. Monitoring range of the sensors Blind Spot Assist monitors the area up to
three metres behind your vehicl
eand directly
next to your vehicl easshown in the diagram. Sid
eview, Coupé (example) G
Risk of accident
Blind Spot Assist monitors certain areas in the
immediate vicinit yofyour vehicle. Vehicles
that approach and driv epast at high speeds
are not detected. There is no display and no
warning.
If the lanes are very wide, it may not be pos-
sible to monitor the complete width of the
neighbouring lane. For this reason, vehicles in
the next lane may not be detected, especially
if they are driving in astaggered formation in
different lanes .This ma ybethe case if vehi-
cles ar edrivin gatt he edge of their lan ethat
is furthest away from your vehicle.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you ma yfail to
recognise dangers in time, cause an accident
and injure yourself and others.
If the lanes are narrow, the system may be
unable to distinguish the neighbouring lane
from the one beyond it. For this reason, vehi-
cles in the farther lane may be indicated,
especially if the vehicles are driving in astag-
gered formation in different lanes .Inparticu- 184
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lar, this may be the case if the vehicles are
drivin gatthe edge of their lan enearest your
vehicle. Due to the nature of the system,
warnings may be issued in err or when driving
clos etoc rashb arriers or similar solid lane
borders.
The two sensors for Blind Spot Assis tare
integrate dinto the sides of the rear bumper.
Make sure that the bumpe risfree from dirt,
ice or slus haround th esensors. For example,
the rada rsensors must not be covered by
cycle racks or overhanging loads. Followin ga
severe impac torinthe even tofdamage to
the bumpers, have the function of the radar
sensors checked at aqualified specialist
workshop, e.g. aMercedes-Ben zService
Cent re.B lind Spot Assist may otherwise not
work properly.
Information and warning display :
Yellow indicator lamp/red warnin glamp
When Blind Spot Assis tisa ctivated, indicator
lamp :in the exterior mirrors lights up in
yellow at speed sofupto30km/ h.At speeds
above 30 km/h, the indicator lamp goe sout
and Blind Spo tAssist is operational.
If av ehicle is detected within the monitoring
range of Blin dSpot Assist at speeds above
30 km/h, warning lamp :on the corre-
sponding side lights up red. This warning is
always issued when avehicle enter sthe blind
spot monitoring range from behind or from
the side. When you overtak eavehicle, the
warning only occurs if the difference in speed
is less than 12 km/h. The yellow indicator lam
pgoes out after
reverse gear is engaged. In this event, Blind
Spot Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light. G
Risk of accident
Blind Spot Assist is not active at speeds below
30 km/h, and the indicator lamps in the exte-
rio rm irror sare yel low.Vehicles in the moni-
toring range are then not indicated.
Alway spay attention to traffic conditions and
your surroundings. Otherwise ,you may fai lto
recognise dangers in time ,cause an accident
and injure yoursel fand others.
Collisio nwarning If
av ehicle is detected in the mon itoring range
of Blind Spot Assis tand you switch on the turn
signal, adouble warnin gtone sounds. Red
warnin glamp :flashes .Ifthe tur nsignal
remains on, detected vehicles are indicated
by the flashing of red warnin glamp :.T here
ar enof urther warning tones.
Switching on Blind Spot Assist X
Make sure that the radar senso rsystem
(Y page 208) and Blind Spot Assist
(Y page 203) are activated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors
ligh tupinr ed for about 1. 5seconds and
then tur nyellow.
Trailer towing When you attach
atrailer, yo umust ensure
that the electrical connection has been estab-
lished correctly. You can check the trailer
lighting to make sure. Blind Spot Assis tis
then deactivated .The indicator lam pint he
exterior mirror lights up yellow and the
Active Blin dSpot Assist currently Drivin
gsystems
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unavailable See Owner's Manual
mes-
sage appe arsint he multifunction display. Trailer towing
Folding out th
eball coupling
Before you can tow atrailer wit hyour vehicle,
you must fold out the ball coupling.
The release wheel is located behind the left-
hand side trim panel in the boot. G
Risk of accident
Make sur ethat the ball coupling is engaged,
either in its folded-ou torfolded-i nposition,
and that the indicator lam pisoff.
Do not turn the releas ewheel when atrailer
is coupled up. Otherwise, th etrailer might
detach. X
To ope nthe cov er:turn handle :anti-
clockwis eand fold dow ncover ;. X
Pull out release wheel ;.
X Tur nrelease wheel ;anti-clockwise until
the ball couplin greleases and folds out from under the rear bumper
.Indicator
lamp :flashes. X
Pull the ball coupling in the direction of the
arrow until it engages in avertical position.
Indicator lamp :goes out. The power
socket folds down automatically.
The multifunction display shows the
Traile rhitch Check lock mech. mes-
sage until th eball coupling is engaged.
X Remove the protective cap from the ball
coupling and store it in asafe place.
X Make sure that the ball of the ball coupling
is clean and that, depending on the trailer
specification, it is greased or dry (without
grease) when used. Coupling up
atrailer G
Risk of injury
Do not disconnect atrailer wit hanengaged
overrun brake. Otherwise, your hand could
become trappe dbetween the bumper and
trailer drawbar.
X Make sure that the transmission is in posi-
tion P.
X Apply the parking brake.
X Position the trailer level behind the vehicle.
X Couple up the trailer.
X Establish the electrical connection
between the vehicl eand the trailer. 186
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Uncoupling
atrailer G
Ris
kofi njury
As soon as yo uraise the trailer drawbar, the
unladen vehicl erises slightly .The vehicl ethen
lowers to driving level.
Make sure that nobody is in the vicinity of the
wheel arch or the underbody. You coul doth-
erwise trap yoursel forothers. G
Risk of injury
The vehicle is lowered as soo nasyou discon-
nec tthe trailer cable. Make sur ethat nobody
is in the vicinit yofthe wheel arch or the
underbody. You coul dotherwis etrap yourself
or others.
As soon as you decoupl ethe trailer ,the unla-
den vehicle rise sslightly. Make sure that you
or others are not injured in the process.
! Do not uncouple atrailer wit hoverrun
brake between th ebumper and drawbar,
otherwis eyour vehicle coul dbedamaged
by the spring action of the overrun brake.
X Make sure that the transmission is in posi-
tion P.
X Apply the parking brake.
X Secure the trailer against rolling away.
X Remove the trailer cable and decouple the
trailer. Notes on towing
atrailer
Important safety instructions G
Ris
kofa ccident
When reversing the vehicle towards the
trailer, mak esure there is nobody between
the trailer and the vehicle.
Couple and uncouple the trailer carefully. If
you do not couple the trailer to the towing
vehicle correctly, the trailer could become
detached.
Make sure that the following values are not
exceeded: R
the permissible trailer drawbar noseweight
R the permissible trailer load
R the permissible rear axle load of the towing
vehicle
R the maximu mpermissible gross vehicle
weight of both the towing vehicle and the
trailer
You will fin dthe applicable permissible val-
ues, whic hmust not be exceeded ,inthe vehi-
cle documen ts.
You will find the values approved by the man-
ufacturer on the vehicle identification plates
and those for the towing vehicle in the "Tech-
nical data" section. G
Risk of accident
If the Checktrailer hitch locking
mechanism message appears in th emulti-
function display while the vehicle is in motion,
pull over immediately and check whethe rthe
ball coupling is correctly engaged. G
Risk of accident
Always observ ethe maximum speed permit-
ted in Germany for vehicle/ trailer combina-
tions, even in countries where higher speeds
are permitted. This lowers the risk of an acci-
dent. G
Risk of accident
Never depress the brake pedal continuously
while the vehicle is in motion ,e.g. never cause
the brakes to rub by appl yingc onstant slight
pedal pressure. This causes the brake system
to overheat, increases the brakin gdistance
and can lead to the brakes failing completely. G
Risk of accident
On no account should you attempt to draw the
vehicle/trailer combination out by increasing
speed. Trailer towing
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Gen
eral information i
When towing atrail er,s et the tyr epres-
sure on th erear axle of the towing vehicle
for am aximum load; se ethe tyr epressure
table in th efuel filler flap.
You will find installatio ndimensions and loads
in the "Technical data” section
(Y page 322).
The maximum permissible trailer drawbar
noseweight on the ball coupling is 75 kg.
However ,the actual noseweight must not
exceed the value given on the trailer tow hitch
and trailer identification plates. The lowest
weight applies.
! Use anoseweight as close as possible to
the maximum permissible noseweight .Do
not use anoseweight of less than 50 kg,
otherwise the trailer ma ycome loose.
Bear in min dthat the payload and the rear
axl eload ar ereduced by the actual nose-
weight.
Please not ethat when towing atrailer, PARK-
TRONIC (Y page 174) and parkin gguidance
(Y page 177 )are onl yavail ablew ith limita-
tions, or not at all.
i The height of the ball coupling changes
with the load of the vehicle. If necessary,
use atrailer wit haheight-adjustable draw-
bar.
Driving tips i
Observ ethe notes on ESP ®
trailer stabi-
lisation (Y page 58).
In Germany, the maximum permissible speed
for vehicle/ trailer combinations depends on
the type of trailer and is either 80 km/ hor
100 km/h. In some countries ,higher maxi-
mum speeds are permissible for vehicle/
trailer combinations. Befor ebeginnin gthe
journey ,check the trailer's documen tsto see
what the maximum permitted speed is.
For certain Mercedes-Benz vehicles, the max-
imum permissible rear axle load is increased
when towing atrailer. Refer to th e"Technical data
"section to fin dout whether this applies
to your vehicle. If you utilise any of the added
maximum rear axle load when towing atrailer,
th ev ehicle/ trailer combination may not
exceed amaximum spee dof100 km/h for
reasons concerning the operating permit.
This als oapplies in countries in which the
permissible maximum speed for vehicle/
trailer combinations is above 10 0km/h.
When towing atrailer, your vehicle's handling
characteristics wil lbedifferent in comparison
to when drivin gwithout atrailer.
Th ev ehicle/ trailer combination:
R is heavier
R is restricted in its acceleration and gradi-
ent-climbin gcapability
R has an increased braking distance
R is affected more by stron gcrosswinds
R demand smore sensitive steering
R consume smore fuel
On long and steep downhil lgradients ,you
must shift to alower gear in good time, or on
vehicles with automatic transmission ,select
the shift range 1,2or 3.
i This also applies if you have activated
cruise control, SPEEDTRONIC or DI S-
TRONIC PLUS.
This will use the brakin geffect of th eengine,
so les sbraking wil lberequired to maintain
the speed. This relieves the load on the brake
system and prevent sthe brakes from over-
heating and wearing too quickly .Ifyou need
additional braking, depress the brake pedal
repeatedly rather than con tinuously.
Driving tips R
Maintain agreater distance from th evehi-
cle in front than when driving without a
trailer.
R Avoid braking abruptly. If possible, brake
gently at first to allow the trailer to run on.
Then increase the braking force rapidly.
R The values given for gradient-climbing
capabilities from astandstill refer to sea 188
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level. When drivin
ginmountainous areas,
not ethat the power output of the engine,
and consequently the vehi cle's gradient-
climbing capability, decrease with increas-
ing altitude.
If the trailer swing sfrom side to side:
X Do not accelerate.
X Do not cou nter-steer.
X Brake if necessary. Folding in th
eball coupling
i Foldthe ball couplin gback in if you are
not using the trailer tow hitch. G
Risk of injury
Make sure that no persons or animals are in
the pivoting rang eofthe ball coupling. Other-
wise, the ycould be injured.
X Place the protective cap on the ball cou-
pling.
The release wheel is located behin dthe lef t-
hand side trim pane linthe boot. X
To ope nthe cover: turnh andle :anti-
cloc kwise and fold down cover ;. X
Pull out release wheel ;.
X Turn release wheel ;anti-clockwise.
The ball couplin gunlock sand lowe rs.Ind i-
cator lamp :flashes. X
Press th eball couplin gint he direction of
th ea rrow until it engage sbehin dthe
bumper.
Indicato rlamp :goes out and the mes-
sage in the multifunction display disap-
pears. Trailer power supply
When it leaves the factory, your vehicle's
trailer socket is equipped wit hapermanent
power supply and apower supply that is
switched on via the ignition lock.
The permanen tpower supply is supplied via
trailer socket pin 9.
The power supply that is switched on via the
ignition lock is supplied via trailer socket pin
10. Trailer towing
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