Page 265 of 497

Activ
eBlind Spo tAssist monitors the area up
to 3.0 mbehind your vehicle and directly next
to your vehicle, as shown in the diagram.
The detection of vehicles may be impaired in the case of:
R dirt on the sensor sorobscured sensors
R poor visibility, e.g. due to rain, snow or
spray
Vehicles in the monitoring range will then be
indicated late or not at all.
Active Blind Spot Assist may not detec tnar-
row vehicles, such as motorcycles or bicy-
cles, or may only detec tthem too late.
If the lanes are narrow, vehicles driving in the
lane beyond the lane nexttoy our vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may be the case if ther eare vehicles at the edge of
their lane.
Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders
R warnings may be interrupted when driving
alongside long vehicles, for example lor-
ries, for aprolonged time
Warning display :
Warnin gdisplay
Active Blind Spot Assist is not active at
speeds below approximately 30 km/h. Vehi-
cles in the monitoring range are then not indi-
cated. If Active Blind Spot Assist is activated, indi-
cator lamp
:in the exterior mirror slights up
yellow up to aspeed of 30 km/h. At speeds
above 30 km/h, the indicator lamp goes out
and Active Blind Spot Assist is operational.
If av ehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the corre-
spondin gside lights up red. Awarning is
alway sissued when avehicle enters the mon-
itorin grange of Blind Spot Assist from behind
or from the side. When you overtake avehicle,
the warning only occur sifthe difference in
speed is less than 12 km/h.
The yellow indicator lamp goes out if reverse gear is engaged. Active Blind Spot Assist is
not operational.
The brightness of the warning lamps is auto-
matically adapted to the brightness of the
surroundings.
Visua land acoustic collision warning
If you switch on the turn signals to change
lanes and avehicle is detected in the side
monitoring range, you receive avisual and
acoustic collision warning. You then hear a
double warning tonea nd red warning lamp:
flashes. If the turn signal remains on, detec-
ted vehicles are indicated by the flashing of
red warning lamp :.There are no further
warning tones.
Course-correcting brak eapplication
If Active Blind Spot Assist detects arisk of a
side impact in the monitoring range, acourse-
correcting brake application is carried out.
This is designed to help you avoid acollision. G
WARNING
Ac ourse-correcting brake application cannot
alway spreven tacollision. There is arisk of an
accident.
Always steer ,brake or accelerat eyourself,
especially if Active Blind Spot Assist warns
you or makes acourse-correcting brake appli-
cation .Always maintain asafe distanc eatthe
sides. 262
Driving systemsDriving and parking
Page 266 of 497

Example: Saloon
If ac ourse-correcting brake application
occurs, red warning lamp :flashe sinthe
exterio rmirror and adualw arning tone
sounds. In addition, display ;underlining
the dange rofasidec ollision appear sinthe
multifunctio ndisplay.
In ver yrarec ases, the system ma ymakean
inappropriate brake application. Acourse-
correcting brake applicatio nmaybe interrup-
ted at any time if yo ustee rsligh tlyint he
opposite direction or accelerate.
The course-correcting brake applicatio nis
availabl einthe speed range between
30 km/h and 200 km/h.
Either acourse-correcting brake application
appropriate to the driving situation, or none at all, ma yoccu rif:
R ther earevehicles or obstacles, e.g .crash
barriers ,onboths ides of your vehicle
R av ehicl eapproaches too closel yonthe
side
R yo uh avea dopt edasporty driving style with
high cornering speeds R
yo uc learly brake or accelerate
R ad riving safety system intervenes, such as
ESP ®
or PRE-SAFE ®
Brake
R ESP ®
is deactivated
R al os soft yrep ressure or adefective tyr eis
detected
Activatin gActiveB lind Spo tAssist
X Make sure tha tActive Blind Spo tAssist
(Y page 288 )isactivated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterio rmirrors
light up red for approximatel y1.5 seconds
and then tur nyellow.
Towin gatrailer
If yo ucoupl eupa trailer, make sure tha tyou
have correctl yestablished the electrical con-
nection. Thi scan be accomplished by check-
ing the traile rlig hting. Active Blind Spo tAssist
is then deactivated .The indicator lamps in the
exterio rmirrors light up yellow and the
Active
Active Blind BlindSpot
SpotAssist
Assist not
notavaila‐
availa‐
ble whe ntowing atraile rSee Own‐
ble whe ntowing atraile rSee Own‐
er' sManual
er' sManual message appear sinthe multi-
functio ndisplay.
Activ eLaneK eeping Assist General notes
Active Lane Keeping Assist monitors the area
in front of your vehicl ebymeans of multi-
functio ncamera :at the top of the wind-
screen. Various different area stothe front, Driving systems
263Driving andparking Z
Page 267 of 497

rear and side of yourv
ehicleare alsom oni-
tored with the aid of the rada rsensor system.
Active Lane Keeping Assist detects lane
markings on the road and can warn you
before you leave yourl ane unintentionally.If
you do not react to the warning, alane-cor-
recting application of the brakes can bring the
vehicl eback into the original lane.
This function is available withi naspeedrange
between 60 km/h and 200 km/h.
For Active Lane Keeping Assist to assist you
when driving, the rada rsensor system must
be operational.
Important safety notes
If you fail to adapt yourd riving style,Active
Lane Keeping Assist can neither reduce the
risk of an accident nor overrid ethe lawsof
physics. Active Lane Keeping Assist cannot
take account of road and weather conditions.
It may not detect traffic situations. Active
Lane Keeping Assist is only an aid.Y ou are
responsible for the distance to the vehicl ein
front, for vehicl espeed, for braking in good
time, and for staying in lane.
Active Lane Keeping Assist cannot continu-
ousl ykeep yourv ehicleini ts lane. G
WARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
R give an unnecessary warning and then
make acourse-correcting brake application
to the vehicle
R neither give awarning nor intervene
There is arisk of an accident.
Always pay particular attention to the traffic
situation and keep withi nthe lane, especially
if Active Lane Keeping Assist alerts you.T er-
minate the intervention in anon-critical driv-
ing situation. The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road ,ordue to
snow, rain, fog or spray
R there is glare, e.g. from oncoming traffic,
the sun or reflectio nfrom other vehicles
(e.g. if the road surface is wet)
R the windscreen is dirty ,misted up, dam-
agedorc overed, for instance by asticker,
in the vicinity of the camera
R the rada rsensors in the front or rear bump-
ers or the radiator trim are dirty ,e.g.
obscured by snow
R no or several, unclea rlane markings are
present for one lane, e.g. in aconstruction
area
R the lane markings are worn away,d ark or
covered up, e.g. by dirt or snow
R the distance to the vehicl einfront is too
smal land the lane markings thus cannot be
detected
R the lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
R the road is narrow and winding
R there are highly variable shad econditions
on the road
If no vehicl eisdetected in the adjacent lane
and broken lane markings are detected, no
lane-correcting brake application is made.
Warning vibratio nthrough the steering
wheel
Aw arning may be given if afront wheel
passes over alane marking. It willw arny ou by
means of intermittent vibration in the steer-
ing whee lfor up to 1.5 seconds.
Lane-correcting brake application G
WARNING
Al ane-correcting brake application cannot
alwaysb ring the vehicl eback into the original
lane. There is arisk of an accident. 264
Driving systemsDriving and parking
Page 268 of 497

Alway
ssteer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
yo uorm akes alan e-correcting brake appli-
cation. G
WARNING
Active Lane Keeping Assist onl ydetects traf-
fic conditions or roa dusers to alim ited
extent. In ver yrarec ases, the system may
make an inappropriate brake application, e.g. afte rintentionally driving ove rasolid lane
marking .There is ariskofana ccident.
An inappropriate brake applicatio nmaybe
interrupte datany time if yo ustee rslightly in
the opposite direction. Alway smakes uret hat
ther eiss ufficient distance to the side for
othe rtraffic or obstacles. Example: Saloon
If yo uleave your lane under certain circum-
stances, the vehicl ewillb rake briefl yonone
side .Thisisi ntende dtohelpy ou return the
vehicl etothe original lane.
If al an e-correcting brake applicatio noccurs,
display :appear sinthe multifunctio ndis-
play.
Al ane-correcting brake applicatio ncan be
made afte rdriving ove ralanem arking detec-
ted as being solid or broken. Before this, a
warning must have been issued by means of
intermittent vibratio nthroug hthe steering
wheel. In addition, alan ew ithl an em arkings
on both side smustbed etected.
In the cas eofabroken lane marking being
detected, alan e-correcting brake application
can onl ybemadeifav ehiclehasbeen detec- ted in the adjacent lane. The following vehi-
cle scan have an influence on brake applica-
tion: oncoming traffic, vehicles tha tare over-
taking and vehicles tha tare driving parallel to
your vehicle.
i Af
urthe rlan e-correcting brake applica-
tio nc an onl yoccu rafte ryourv ehicl ehas
returned to the original lane.
No lane-correcting brake applicatio noccurs
if:
R yo uc learly and activel ysteer, brake or
accelerate
R yo uc ut the corne ronasharp bend
R yo uh avea dopt edasporty driving style with
high cornering speed sorhighr ates of
acceleration
R yo uh aves witched on the turn signals
R ad riving safety system intervenes, such as
ESP ®
,P RE -SAFE ®
Brake or Active Blind
Spo tAssist
R ESP ®
is deactivated
R the transmission is not in position D
R on vehicles with atraile rtow hitch, the
electrical connectio ntothe traile rhas been
correctl yestablished
R an obstacle ha sbeend etecte dint he lane in
which yo uaredriving
R al ossoft yrep ressure or adefective tyre
ha sb eend etecte dand displayed
There is apossibility tha tthe Active Lane
Keeping Assist could misjudge the given traf-
fic situation. An inappropriate brake applica-
tio nm aybe interrupte datany time if:
R yo us tee rslightly in the opposite direction
R yo us witch on the turn signal
R yo uc learly brake or accelerate
Al ane-correcting brake applicatio nisinter-
rupte dautomaticall yif:
R ad riving safety system intervenes, such as
ESP ®
,P RE -SAFE ®
Brake or Active Blind
Spo tAssist
R lane marking sareno longe rdetected Driving systems
265Driving andparking Z
Page 269 of 497

Activatin
gActive Lane Keeping Assist
X Activat eActiv eLaneK eepin gAssist using
th eo n-bo ard computer; to do so, select
Standard
Standard orAdaptive
Adaptive (Ypage 288).
If you driv eatspeeds abov e60km/ hand
lane markings are detected, th elines in the
assistance graphic display (Y page 286)
are shown in green .ActiveL aneK eeping
Assist is read yfor use.
If Standard
Standard is selected, no warning vibra-
tion occur sif:
R you have switched on th eturns ignals. In
this case, th ewarning sare suppressed
for acertai nperiod of time.
R ad riving safet ysystem intervenes, such
as ABS, BA SorESP®
.
When Adaptive
Adaptive is selected, no warning
vibration occur sif:
R you have switched on th eturns ignals. In
this case, th ewarning sare suppressed
for acertai nperiod of time.
R ad riving safet ysystem intervenes, such
as ABS, BA SorESP®
.
R you accelerate hard ,e.g.k ickdown.
R you brak ehard.
R you steer actively, e.g. swerve to avoi dan
obstacle or chang elane quickly.
R you cut th ecorner onashar pbend.
In order that you are warned only when nec-
essary and in good time if you cross th elane
marking, th esystem detect scertai ncondi-
tion sand warn syou accordingly.
The warning vibration occur searlier if:
R you approac hthe outer lane markin gona
bend
R ther oad has ver ywide lanes, e.g. amotor-
way
R thes ystem detect ssolid lane markings
The warning vibration occur slater if:
R ther oad has narrow lanes
R you cut th ecorner onabend Towing
atrailer
If you couple up atrailer ,makes ure that you
have correctly established th eelectrical con-
nection .This can be accomplished by check-
ing th etrailer lighting. Towin
gatrailer Important safety notes
G
WARNING
You could lose control of th evehicle/trailer
combination if it begins to swerve. The vehi-
cle/traile rcom bination could eve noverturn.
Ther eisar iskofana ccident.
On no accoun tshould you attemp tto
straighten out th evehicle/traile rcom bina-
tio nbyi ncreasing speed. Decrease your
spee dand do no tcountersteer. Brake if nec-
essary. G
WARNING
If th emaximum th epermissible load for acar-
rier system is exceeded, th ecarrier could
come loos efromt hevehicl eand endanger
other road users. Ther eisariskofana ccident
and injury.
Never excee dthe permissible noseweight
when usin gacarrier.
Exceedin gthe maximum permissible nose-
weigh tofthetrailer drawbar on th eball cou-
plin gm ay caus edamag etothefollowing:
R your vehicle
R thet railer
R theb all coupling
R trailer to whitch
The vehicle/traile rcom bination could
become unstable.
If th enoseweight used is lower than th emin-
imum permissible noseweight ,the vehicle/
trailer combination could also become unsta- ble. 266
Towin
gatrailerDriving and pa rking
Page 270 of 497

To avoid hazardous situations:
R make sure to check the noseweight before
each journey
R use adrawbar noseweight as close as pos-
sible to the maximum noseweight
R do not exceed the maximum permissible
noseweight
R do not use anoseweight lower than the
minimum noseweight
When reversin gthe vehicle towards the
trailer, make sure 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 maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer
You will find the applicable permissible val-
ues, which must not be exceeded, in the vehi-
cle documents.
You will find the values approved by the man- ufacturer on the vehicle identification plates
and those for the towing vehicle under "Tech-
nical data" (Y page 484).
When towing atrailer, your vehicle's handling
characteristics will be different in comparison to when driving without atrailer.
The vehicle/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 demands more sensitive steering
R has alarger turnin gcircle This can impair the vehicle's handling char-
acteristics. Adapt your driving style accord-
ingly. Maintain
asafe distance. Drive care-
fully.
When towing atrailer, alway sadjust your
speed to the curren troad and weather con-
ditions. Do not exceed the maximum permis- sible speed for your vehicle/trailer combina-
tion. Notes on towing
atrailer
General notes Trailer towing is not permissible on the fol-
lowing models:
R E2 20 BlueTEC BlueEFFICIENCY Edition
R E1 80
R E63A MG
R E63A MG S-MODEL
R E63A MG 4MATIC
R E63A MG S-MODEL4 MATIC
i When towing
atrailer, set the tyre pres-
sure on the rear axle of the towing vehicle
for am aximum load; see the tyre pressure
table in the fuel filler flap (Y page 420).
Please notet hat when towing atrailer,
PARKTRONIC (Y page 235), Active Parking
Assist (Y page 239) and Blind Spot Assist
(Y page 257) are only available with limita-
tions, or not at all.
i On vehicles without level control, the
height of the ball coupling will alter accord-
ing to the load placed on the vehicle. If nec- essary, use atrailer with aheight-adjusta-
ble drawbar.
You will find fitting dimensions and loads
under "Technical data" (Y page 482).
Driving tips i
Observe the notes on ESP ®
trailer stabi-
lisation (Y page 86). Towing
atrailer
267Driving and parking Z
Page 271 of 497

The maximum permissible speed for vehicle/
trailer combinations depends on the type of
trailer. Before beginnin gthe journey, check
the trailer's document stosee what the max-
imum permitted speed is. Observe the legally
prescribed maximum speed in the relevant
country.
For certain Mercedes-Benz vehicles, the max-
imum permissible rear axle load is increased
when towing atrailer. See the "Technical
data" section to find out whether this applies to your vehicle (Y page 484). If you utilise any
of the added maximum rear axle load when
towing atrailer, the vehicle/trailer combina-
tion may not exceed amaximum speed of
100 km/hf or reasons concerning the oper-
ating permit. This also applie sincountrie sin
which the permissible maximu mspee dfor
vehicle/trailer combinations is above
100 km/h.
When towing atrailer, you rvehicle's handling
characteristics wil lbedifferent in comparison
to whe ndriving without atrailer and it will
consume more fuel.
Change into alower gea ringood time on long
and steep downhill gradients.
i This also applie
sifyou have activated
cruis econtrol, SPEEDTRONIC or
DISTRONIC PLUS.
This wil luse the braking effect of the engine,
so less braking wil lberequired to maintain
vehicle speed. This relieves the loa donthe
brake system and prevents the brake sfrom
overheating and wearing too quickly. If you
need additiona lbraking, depress the brake
pedal repeatedl yrather than continuously.
Driving tips If the trailer swings from side to side:
X Do not accelerate.
X Do not countersteer.
X Brake if necessary. R
Maintain agreater distance to the vehicle in
front than whe ndriving without atrailer.
R Avoid braking abruptly .Ifpossible ,brake
gently at first to allow the trailer to run on.
Then, increase the braking force rapidly.
R The values give nfor gradient-climbing
capabilities from astandstil lrefer to sea
level. When driving in mountainous areas,
note that the power outpu tofthe engine,
and consequently the vehicle's gradient-
climbing capability, decrease with increas-
ing altitude. Foldin
gout the ball coupling G
WARNING
If the bal lcoupling is not correctly engaged,
the trailer can detach .There is arisk of an
accident.
Always engag ethe bal lcoupling as described. G
WARNING
If you release the bal lcoupling or it does not
engag ecorrectly whe nfolding in, it wil lswing
out. Withi npivoting range of the bal lcoupling,
there is an increased risk of an accident and
injury.
Only release the bal lcoupling if the pivoting
range is unobstructed. Always make sure that the bal lcoupling engages whe nfolding in. Saloon
Before you can tow
atrailer with you rvehicle,
you must fold out the bal lcoupling. 268
Towing
atrailerDriving and parking
Page 272 of 497

The release wheel is located behind the left-
hand side trim panel in the boot.
Opening the cover (Saloon):
X Slide luggage net ;down.
X Turn handle :around anti-clockwise and
fold cover =down. Estate
Before you can tow
atrailer with your vehicle,
you must fold out the ball coupling.
The release wheel is located behind the left-
hand side trim panel in the boot/luggage
compartment.
Opening the cover (Estate):
X Pull handle :in the direction of the arrow
and fold cover ;down. Saloon
Unlocking and folding out the ball cou-
pling (Saloon):
X Grip release wheel Aso that your thumb
lies on the thumb rest.
X Turn release wheel Aaround anti-clock-
wise until the ball coupling releases and folds out from under the rear bumper. Indi-
cator lamp ?flashes. Estate
Unlocking and folding out the ball cou-
pling (Estate):
X Grip release wheel ?so that your thumb
lies on the thumb rest.
X Turn release wheel ?around anti-clock-
wise until the ball coupling releases and
folds out from under the rear bumper. Indi- cator lamp =flashes. Saloon
Estate Towing
atrailer
269Driving and parking Z