Due to the nature of the system:
Rwarnings may be issued in error when driv-ing close to crash barriers or similar solid
lane borders.
Rwarnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
Indicator and warning display
:Yellow indicator lamp/red warning lamp
Active Blind Spot Assist is not active at
speeds below approximately 20 mph
(30 km/h). Vehicles in the monitoring range
are then not indicated.
When Active Blind Spot Assist is activated,
indicator lamp :in the exterior mirrors lights
up yellow at speeds of up to 20 mph
(30 km/h). At speeds above 20 mph
(30 km/h), the indicator lamp goes out and
Active Blind Spot Assist is operational.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp :on the corre-
sponding side lights up red. This warning is
always given when a vehicle enters the blind
spot monitoring range from behind or from
the side. When you overtake a vehicle, the
warning only occurs if the difference in speed
is less than 7 mph (12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Active Blind
Spot Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light. Visual and acoustic collision warning
When you switch on the turn signals to
change lanes and a vehicle is detected in the
side monitoring range, you receive a visual
and acoustic collision warning. You then hear
a double warning tone and red warning
lamp
:flashes. If the turn signal remains on,
detected vehicles are indicated by the flash-
ing of red warning lamp :. There are no fur-
ther warning tones.
Course-correcting brake application
GWARNING
A course-correcting brake application cannot always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the
sides.
216Driving system s
Driving an d parking
If a course-correcting brake application
occurs, red warning lamp:flashes in the
exterior mirror and a dual warning tone
sounds. In addition, display ;appears in the
multifunction display.
If Active Blind Spot Assist detects a risk of a
lateral collision in the monitoring range, a
course-correcting brake application is carried
out. This is meant to assist you in avoiding a
collision.
The course-correcting brake application is
available in the speed range between 20 mph (30 km/h) and 120 mph (200 km/h).
Either a very slight course-correcting brake
application, or none at all, may occur if:
Rthere are vehicles or obstacles, e.g. crash
barriers, located on both sides of your vehi-
cle.
Ra vehicle approaches you too closely at the
side.
Ryou have adopted a sporty driving style with
high cornering speeds.
Ryou clearly brake or accelerate.
Ra driving safety system intervenes, e.g.
ESP®or PRE-SAFE®Brake.
RESP®is switched off.
Ra loss of tire pressure or a defective tire is
detected.
Switching on Active Blind Spot Assist
XMake sure that Active Blind Spot Assist is
activated (
Ypage 231).
XTurn the SmartKey to position 2in the igni-
tion lock.
Warning lamps :in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Active Lane Keeping Assist
General notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of camera :
at the top of the windshield. Active Lane
Keeping Assist detects lane markings on the
road and warns you before you leave your
lane unintentionally. If you do not react to the
warning, a lane-correcting application of the
Driving systems217
Driving and parking
Z
brakes can bring the vehicle back into the
original lane.
If you selectkm
on the on-board computer in
the Display Unit Speed-/Odometer
func-
tion (
Ypage 232), Active Lane Keeping Assist
is activated starting at a speed of 60 km/h. If
the miles
display unit is selected, the assis-
tance range begins at 40 mph.
Important safety notes
If you fail to adapt your driving style, Active
Lane Keeping Assist can neither reduce the
risk of accident nor override the laws of phys-
ics. Lane Keeping Assist cannot take into
account the road, traffic and weather condi-
tions. Lane Keeping Assist is merely an aid.
You are responsible for the distance to the
vehicle in front, for vehicle speed, for braking
in good time and for staying in your lane.
Active Lane Keeping Assist cannot continu-
ously keep your vehicle in its lane.
GWARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
Rgive an unnecessary warning and then
make a course-correcting brake application
to the vehicle
Rnot give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention in a non-critical driv-
ing situation.
The system may be impaired or may not func-
tion if:
Rthere is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet)
Rthe windshield is dirty, fogged up, damaged or covered, for instance by a sticker, in the
vicinity of the camera
Rthere are no, several or unclear lane mark-
ings for a lane, e.g. in areas with road con- struction work
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
Rthe lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
Rthe road is narrow and winding
Rthere are strong shadows cast on the road
Warning vibration in the steering wheel
A warning may be given if a front wheel
passes over a lane marking. It will warn you by means of intermittent vibration in the steer-
ing wheel for up to 1.5 seconds.
In order that you are warned only when nec-
essary and in good time if you cross the lane
marking, the system recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a high-
way.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
Lane-correcting brake application
GWARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
218Driving systems
Driving and parking
you or makesalane-correcting brak eappli -
cation .
GWARNIN G
Active Lan eKeepin gAssis tdoes no tdetec t
traffic condition sor roa dusers. In ver yrar e
cases, th esystem may mak ean inappropriat e
brak eapplication ,e.g. after intentionally driv-
in gove r asoli dlan emarking .There is aris kof
an accident.
An inappropriat ebrak eapplication may be
interrupted at any time if you steer slightly in
th eopposit edirection .Always mak esur ethat
there is sufficien tdistanc eon th eside for
other traffic or obstacles.
In rar ecases, Active Lan eKeepin gAssis tcan
recogniz eunclear marking sor particular
structures on th eroadway as soli dlan emark-
ings. An inappropriat ebrak eapplication may
be interrupted at any time if you steer slightly
in th eopposit edirection .
Ifalane-correcting brak eapplication occurs,
display :appear sin th emultifunction dis-
play.
If you leav eyour lane, under certain circum -
stances th evehicl ewill brak ebriefl yon on e
side .This is mean tto assist you in bringin g
th evehicl ebac kto th eoriginal lane.
This function is available in th erange between
40 mph and 12 0mph (60 km/ h and
200 km/h).
A lane-correcting brake application can only
be made after driving over a solid, recogniz-
able lane marking. Before this, a warning must be given by means of intermittent vibra-
tion in the steering wheel. In addition, a lane
with lane markings on both sides must be
recognized. The brake application also
slightly reduces vehicle speed.
iA further lane-correcting brake applica-
tion can only occur after your vehicle has
returned to the original lane.
No lane-correcting brake application occurs
if:
Ryou clearly and actively steer, brake or
accelerate.
Ryou cut the corner on a sharp bend.
Ryou have switched on the turn signals.
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
Ryou have adopted a sporty driving style with high cornering speeds or high rates of
acceleration.
RESP®is switched off.
Rthe transmission is not in position D.
Rwhen a loss of tire pressure or a defective
tire has been detected and displayed.
Active Lane Keeping Assist does not detect
traffic situations or road users. An inappro-
priate brake application may be interrupted at
any time if you:
Rsteer slightly in the opposite direction
Rswitch on the turn signal
Rclearly brake or accelerate
A lane-correcting brake application is inter-
rupted automatically if:
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
Rlane markings can no longer be recognized.
Driving systems219
Driving and parking
Z
Switching on Active Lane Keeping Assist
XSwitch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard
orAdaptive(Ypage 232).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
(
Ypage 231) are shown in green. Lane
Keeping Assist is ready for use.
If Standard
is selected, no warning vibra-
tion occurs if:
Ryou have switched on the turn signals. In
this event, the warnings are suppressed
for a certain period of time.
Ra driving safety system intervenes, such
as ABS, BAS or ESP®.
When Adaptive
is selected, no warning
vibration occurs if:
Ryou have switched on the turn signals. In
this event, the warnings are suppressed
for a certain period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
220Driving systems
Driving and parking
Accepting a call
If someonecall syou when you are in th eTel
menu, adisplay message appear sin th emul-
tifunction display.
You can accept acall at any time, eve nif you
are no tin th eTel
menu.
XPress th e6 buttonon th esteering
whee lto accept an incoming call .
Rejectingorending a call
You can en dor rejec t acall anytime ,eve nif
you are no tin th eTel
menu.
XPress th e~ buttonon th esteering
whee lto rejec tor en d acall.
Selecting an entry in the phonebook
XPress the= or; buttonon th esteer -
ing whee lto select th eTel
menu.
XPress th e9, :ora buttonto
switch to th ephone book .
XAuthorizeaccess to th ephone book on th e
phone .
XPress:or9 to select th enames
on eafter th eother .
or
XTo star trapid scrolling :press and hold
th e: or9 buttonfor longer than
on esecond.
The names in th ephone book are displayed
quickl yon eafter th eother .
Rapid scrollin gstops when you release th e
butto nor reac hth een dof th elist .
XIf only one telephone number is store d
for a name: press th e6 ora button
to start dialing.
or
XIf there is mor ethan one number for a
particular name: pressthe6 ora
butto nto display th enumber s.
XPressthe9 or: buttonto select th e
number you want to dial.
XPress th e6 ora buttonto start dial-
ing .
or
XTo exit th etelephone book :pre ssthe
~ or% button.
Redialing
The on-board computer saves th elast names
or number sdialed in th eredial memory.
XPre ssthe= or; buttonon th e steer -
ing whee lto select th eTel
menu.
XPress th e6 buttonto switch to th e
redial memory.
XPre ssthe9 or: buttonto select th e
desired nam eor number .
XPress the6 ora buttonto start dial-
ing .
or
XTo exit th eredial memory :pre ssthe
~ or% button.
Assistance menu
Introd uction
Dependin gon your vehicle's equipment, in
th eAssist .
menu, you hav eth efollowin g
options:
RDisplayin gth eassi stanc egraphic
(
Ypage 231)
RMercedes-AM Gvehicles: setting th evehi-
cle level (
Ypage 197)
RActivating/deactivating PRE-SAF E®Brake
(
Ypage 231)
RActivating/deactivating ATTENTION
ASSIST (
Ypage 231)
230Menus and submenus
On-board computer and displays
RActivating/deactivating Active Blind Spot
Assist (
Ypage 231)
RActivating/deactivating Active Lane Keep-
ing Assist (
Ypage 232)
Displaying the assistance graphic
XPress the=or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress9or: to select Assistance
Graphic.
XPressato confirm your selection.
The multifunction display shows the
DISTRONIC PLUS distance display in the
assistance graphic.
The assistance graphic shows you the sta-
tus of and/or information from other driv-
ing systems or driving safety systems:
RDISTRONIC PLUS (Ypage 189)
RPRE-SAFE®Brake (Ypage 77)
RATTENTION ASSIST (Ypage 209)
RActive Lane Keeping Assist
(
Ypage 217)
RSpotlight function of Night View Assist
Plus (
Ypage 233)
Activating/deactivating PRE-SAFE®
Brake
PRE‑SAFE®Brake is only available in vehicles
with DISTRONIC PLUS.
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress the9or: button to select
PRE-SAFE Brake
.
XPress ato confirm your selection.
The current selection appears.
XTo activate/deactivate: press thea
button again.
When the PRE-SAFE
®Brake is deactivated,
the multifunction display in the assistance
graphic shows the æsymbol.
For more information on PRE‑ SAFE
®Brake,
see (
Ypage 77).
Activating/deactivating ATTENTION
ASSIST
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress the9or: button to select
Attention Assist
.
XPress ato confirm your selection.
The current selection appears.
XTo activate/deactivate: press thea
button again.
When ATTENTION ASSIST is deactivated,
the é symbol appears in the multifunc-
tion display in the assistance graphics dis-
play.
For further information about ATTENTION
ASSIST, see (
Ypage 209).
Activating/deactivating Active Blind
Spot Assist
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress the9or: button to select
Blind Spot Assist
.
XPress ato confirm your selection.
The current selection appears.
XTo activate/deactivate: press thea
button again.
For further information about Active Blind
Spot Assist, see (
Ypage 214).
Menus and submenus231
On-board computer and displays
Z
Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
Currently Unavail‐
able See Opera‐
tor's Manual
ABS (Anti-lock Braking System), ESP®(Electronic Stability Pro-
gram), BAS (Brake Assist), PRE ‑SAFE®, the HOLD function and hill
start assist are temporarily unavailable.
BAS PLUS and PRE‑SAFE
®Brake may also have failed.
In addition, the ÷,åand! warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XCarefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message:
XDrive on carefully.
XVisit a qualified specialist workshop.
!÷
Inoperative See
Operator's Manual
ABS, ESP®, BAS, PRE‑SAFE®, the HOLD function and hill start
assist are unavailable due to a malfunction.
BAS PLUS and PRE‑ SAFE
®Brake may also have failed.
The $ (USA only) or J(Canada only), ÷,åand!
warning lamps in the instrument cluster also light up.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
240Display messages
On-board computer and displays