2017 MERCEDES-BENZ CLA-Class Distance warning

The specified minimum distance can be
changed while Distance Pilot DISTRONIC is
switched on or off.
iMake sure that you maintain the minimum
distance to the vehicle in front as required by
law. Adjust the distance to the vehicle in front
if necessary.
XTo increase: turn control=in direction ;.
Distance Pilot DISTRONIC then maintains a
greater distance between your vehicle and
the vehicle in front.
XTo decrease: turn control=in direction :.
Distance Pilot DISTRONIC then maintains a
shorter distance between your vehicle and
the vehicle in front.
Deactivating Distance Pilot DISTRONIC
There are several ways to deactivate Distance
Pilot DISTRONIC:
XBriefly press the cruise control lever for-
wards :.
or
XBrake, unless the vehicle is stationary
When you deactivate Distance Pilot DISTRONIC,
the Distance Pilot Off
message appears in the multifunction display for approximately five
seconds.
iThe last speed stored remains stored until
you switch off the engine. Distance Pilot
DISTRONIC is not deactivated if you depress
the accelerator pedal.
Distance Pilot DISTRONIC is automatically deac-
tivated if:
Ryou engage the electric parking brake or if the
vehicle is automatically secured with the elec-
tric parking brake
RESP®intervenes or you deactivate ESP®
Rthe transmission is in the P,Ror Nposition
Ryou pull the cruise control lever towards you
in order to pull away and the front-passenger
door or one of the rear doors is open
Rthe vehicle is skidding
Ryou switch on Parking Pilot
If Distance Pilot DISTRONIC is automatically
deactivated, you will hear a warning tone. The
Distance Pilot Off
message appears in the
multifunction display for approximately five sec- onds.
Distance Pilot DISTRONIC is automatically deac-
tivated if you activate DSR. The ÃDSR sym-
bol appears in the multifunction display.
Distance Pilot DISTRONIC displays in
the instrument cluster
Displays in the speedometer
When Distance Pilot DISTRONIC is activated and
there are no vehicles detected in front, one or
two segments ;in the speed range set light up.
If Distance Pilot DISTRONIC detects a vehicle in
front, segments ;between speed of the vehi-
cle in front =and stored speed :light up.
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Driving and parking

HOLD function
General notes
The HOLD function can assist the driver in the
following situations:
Rwhen pulling away, especially on steep slopes
Rwhen maneuvering on steep slopes
Rwhen waiting in traffic
The vehicle is kept stationary without the driver having to depress the brake pedal.
The braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.
Important safety notes
GWARNING
When leaving the vehicle, it can still roll away despite being braked by the HOLD function if:
Rthere is a malfunction in the system or in
the voltage supply.
Rthe HOLD function has been deactivated by
pressing the accelerator pedal or the brake
pedal, e.g. by a vehicle occupant.
Rthe electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
Rthe battery is disconnected
There is a risk of an accident.
If you wish to exit the vehicle, always turn off the HOLD function and secure the vehicle
against rolling away.
!When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations:
Rwhen towing the vehicle
Rin the car wash
Deactivating the HOLD function (
Ypage 156).
Activation conditions
You can activate the HOLD function if:
Rthe vehicle is stationary
Rthe engine is running or if it has been auto-
matically switched off by the ECO start/stop
function
Rthe driver's door is closed or your seat belt is
fastened
Rthe electric parking brake is released
RDistance Pilot DISTRONIC is deactivated
Rthe transmission position D,R or Nis engaged
while driving a vehicle with an automatic
transmission
Activating the HOLD function
XMake sure that the activation conditions are
met.
XDepress the brake pedal.
XQuickly depress the brake pedal further
until :appears in the multifunction display.
The HOLD function is activated. You can
release the brake pedal.
iIf depressing the brake pedal the first time
does not activate the HOLD function, wait
briefly and then try again.
Deactivating the HOLD function
The HOLD function is deactivated automatically
if:
Ryou accelerate. On vehicles with automatic
transmission: only when the transmission is in
position Dor R.
Rthe transmission is in position Pon vehicles
with automatic transmission.
Ryou depress the brake pedal again with a cer-
tain amount of pressure until :disappears
from the multifunction display.
Ryou activate Distance Pilot DISTRONIC.
Ryou secure the vehicle using the electric park- ing brake.
156Driving systems
Driving and parking

Front sensors
CenterApprox. 40 in (approx.
100 cm)
CornersApprox. 24 in (approx.
60 cm)
Rear sensors
CenterApprox. 48 in (approx.
120 cm)
CornersApprox. 32 in (approx.
80 cm)
Minimum distance
CenterApprox. 8 in (approx. 20 cm)
CornersApprox. 6 in (approx. 15 cm)
If there is an obstacle within this range, the rel-
evant warning displays light up and a warning
tone sounds. If the distance falls below the min-
imum, the distance may no longer be shown.
Warning displays
:Segments on the left-hand side of the vehi-
cle
;Segments on the right-hand side of the vehi-
cle
=Segments showing operational readiness
The warning displays show the distance
between the sensors and the obstacle. The
warning display for the front area is located on
the dashboard above the center air vents. The
warning display for the rear area is located on
the headliner in the rear compartment.
The warning display for each side of the vehicle
is divided into five yellow and two red segments. Parking Assist PARKTRONIC is operational if yel-
low segments showing operational readiness
=
light up.
The gear lever position or the transmission posi-
tion of the automatic transmission and the
direction in which the vehicle is rolling deter-
mine which warning display is active when the
engine is running.
Transmission posi-
tionWarning display
DFront area activated
R, Nor the vehicle is
rolling backwardsRear and front areas
activated
PNo areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the vehi-
cle's distance from the obstacle.
From the:
Rsixth segment onwards, you will hear an inter-
mittent warning tone for approximately two
seconds.
Rseventh segment onwards, you will hear a
warning tone for approximately two seconds.
This indicates that you have now reached the minimum distance.
Deactivating or activating Parking
Assist PARKTRONIC
:Indicator lamp
;Deactivates or activates Parking Assist
PARKTRONIC
If indicator lamp :is lit, Parking Assist
PARKTRONIC is deactivated.
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As soon as the parking procedure is complete,
theParkingPilotEndedmessage appears in
the multifunction display and a warning tone
sounds. The vehicle is now parked.
The vehicle is kept stationary without the driver
having to depress the brake pedal. The braking
effect is canceled when you depress the accel-
erator pedal.
Parking Pilot no longer supports you with steer-
ing interventions and brake applications. When
Parking Pilot is ended, you must steer and brake
again yourself. Parking Assist PARKTRONIC is
still available.
Parking tips:
RThe way your vehicle is positioned in the park- ing space after parking is dependent on vari-
ous factors. These include the position and
shape of the vehicles parked in front and
behind it and the conditions of the location. It
may be the case that Parking Pilot guides you
too far into a parking space, or not far enough
into it. In some cases, it may also lead you
across or onto the curb. If necessary, you
should abort the parking procedure with Park-
ing Pilot.
RYou can also select preselect transmission
position D. The vehicle redirects and does not
drive as far into the parking space. Should the
transmission change take place too early, the
parking procedure will be canceled. A sensi-
ble parking posi
tion can no longer be ach-
ieved from this position.
Exiting a parking space
In order for Parking Pilot to support you when
exiting the parking space:
Ryou need to have parked using Parking Pilot.
Rthe border of the parking space must be high
enough at the front and the rear. A curb stone is too small, for example.
Rthe border of the parking space must not be
too wide, as the position of the vehicle must
not exceed an angle of 45° to the starting
position as it is maneuvered into the parking
space.
Ra maneuvering distance of at least 3.3 ft
(1.0 m) must be available .
Parkin gPilo t can assist you with exiting a park-
ing space only if you have parked the vehicle
parallel to the direction of travel using Parking
Pilot.
iIf Parking Assist PARKTRONIC detects
obstacles, Parking Pilot brakes automatically
whilst the vehicle is exiting the parking space.
You are responsible for braking in good time.
XStart the engine.
XRelease the electric parking brake.
XSwitch on the turn signal in the direction you
will drive out of the parking space.
XShift the transmission to position Dor R.
The Start Parking Pilot?
Yes: OKNo:% message appears in the multifunction
display.
XTo cancel the procedure:press the %
button on the multifunction steering wheel or pull away.
or
XTo exit a parking space using Parking
Pilot: press the abutton on the multi-
function steering wheel.
The Parking Pilot Active Accelerate
and BrakeObserve Surroundingsmes-
sage appears in the multifunction display.
XLet go of the multifunction steering wheel.
XPull away, being ready to brake at all times. Do
not exceed a maximum speed of approx-
imately 6 mph (10 km/h) when exiting a park-
ing space. Otherwise, Parking Pilot is can-
celed immediately.
XDepending on the message or as required,
shift the transmission to position Dor R.
Parking Pilot immediately steers in the other
direction. The Parking Pilot Active
Accelerate and BrakeObserve Sur‐roundingsmessage appears in the multi-
function display.
iYou will achieve the best results by waiting
for the steering procedure to complete before
pulling away.
If you back up after activation, the steering
wheel is moved to the straight-ahead posi-
tion.
XDrive forwards and reverse as prompted by
the Parking Assist PARKTRONIC warning dis-
plays, several times if necessary.
Once you have exited the parking space com-
pletely, the steering wheel is moved to the
straight-ahead position. You hear a tone and the
Parking
PilotFinishedmessage appears in
the multifunction display. You will then have to
steer and merge into traffic on your own. Park-
ing Assist PARKTRONIC is still available. You can
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:Front warning display
;Additional measurement operational readi-
ness indicator for Parking Assist
PARKTRONIC
=Rear warning display
When Parking Assist PARKTRONIC is opera-
tional (
Ypage 161), additional measurement
operational readiness indicator ;appears in
the multimedia system display. If the Parking
Assist PARKTRONIC warning displays are active
or light up, warning displays :and =are also
active or light up correspondingly in the multi-
media system display.
"Reverse parking" function
Backing up straight into a parking space
without turning the steering wheel
:White guide line without turning the steering
wheel, vehicle width including the exterior
mirrors (static)
;Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
=Yellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the rear of the vehi-
cle
?Red guide line at a distance of approximately
12 in (0.30 m) fromthe rear of the vehicle
XMake sure that the rear view camera is
switched on (Ypage 167).
The lane and the guide lines are shown.
XWith the help of white guide line :, check
whether the vehicle will fit into the parking
space.
XUsing white guide line :as a guide, carefully
back up until you reach the end position.
Red guide line ?is then at the end of the
parking space. The vehicle is almost parallel
in the parking space.
Reverse perpendicular parking with the
steering wheel at an angle
:Parking space marking
;Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
XDrive past the parking space and bring the
vehicle to a standstill.
XMake sure that the rear view camera is
switched on (Ypage 167).
The lane and the guide lines are shown.
XWhile the vehicle is at a standstill, turn the
steering wheel in the direction of the parking
space until yellow guide line ;reaches park-
ing space marking :.
XKeep the steering wheel in that position and
back up carefully.
168Driving systems
Driving an d parking

:Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
XStop the vehicle when it is almost exactly in
front of the parking space.
The white lane should be as close to parallel
with the parking space marking as possible.
:White guide line at current steering wheel
angle
;Parking space marking
XTurn the steering wheel to the center position
while the vehicle is stationary.
:Red guide line at a distance of approximately
12 in (0.30 m) from the rear of the vehicle
;White guide line without turning the steering
wheel
=End of parking space
XBack up carefully until you have reached the
final position.
Red guide line:is then at end of parking
space =. The vehicle is almost parallel in the
parking space.
Wide-angle function
:Symbol for the wide-angle view function
;Own vehicle
=Parking Assist PARKTRONIC warning dis-
plays
Select this view when you are driving out of an
exit and the view of crossing traffic is restricted,
for example.
ATTENTION ASSIST
General notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways. It is
active in the 37 mph (60 km/h) to 125 mph
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XIf necessary, take a break.
XConfirm the message by pressing thea
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you do
not take a break and ATTENTION ASSIST still
detects increasing lapses in concentration, you
will be warned again after 15 minutes at the
earliest. This will only happen if ATTEN-
TION ASSIST still detects typical indicators of
fatigue or increasing lapses in concentration.
Vehicles with the COMAND multimedia sys-
tem: if a warning is output in the multifunction
display, a service station search is performed in
the multimedia system. You can select a service
station and navigation to this service station will
then begin. This function can be activated or
deactivated in the multimedia system; see the
Digital Operator's Manual.
Lane Tracking package
General notes
The Lane Tracking package consists of Blind
Spot Assist (Ypage 171) and Lane Keeping
Assist (Ypage 172).
Blind Spot Assist
General notes
Blind Spot Assist monitors the areas on either
side of the vehicle that are not visible to the
driver with two lateral, rear-facing radar sen-
sors. A warning display in the exterior mirrors
draws your attention to vehicles detected in the
monitored area. If you then switch on the cor-
responding turn signal to change lane, you will
also receive an optical and audible warning.
Blind Spot Assist supports you from a speed of
approximately 20 mph (30 km/h).
Important safety notes
GWARNING
Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of
an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
iUSA only:
This device has been approved by the FCC as
a "Vehicular Radar System". The radar sensor
is intended for use in an automotive radar
system only. Removing, tampering with, or
altering the device will void any warranties,
and is not permitted by the FCC. Do not tam-
per with, alter, or use in any non-approved
way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
Radar sensors
The radar sensors for Blind Spot Assist are inte-
grated into the rear bumper. Make sure that the
bumpers are free from dirt, ice or slush. The
sensors must not be covered, for example by
cycle racks or overhanging loads. Following a
severe impact or in the event of damage to the
bumpers, have the function of the radar sensors
checked at a qualified specialist workshop.
Blind Spot Assist may no longer work properly.
Monitoring range of the sensors
In particular, the detection of obstacles can be
impaired if:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is poor visibility, e.g. due to fog, heavy
rain or snow
Ra narrow vehicle traveling in front, e.g. a
motorbike or bicycle
Rthe road has very wide lanes
Rthe road has narrow lanes
Ryou are not driving in the middle of the lane
Rthere are barriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
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Important safety notes
GWARNING
Lane Keepin g Assist may not always clearly
recognize lane markings.
In this case, Lane Keepin g Assist may:
Rgive an unnecessary warning
Rnot give a warning
There isa risk of an acc ident.
Always pay particular attention to the traff ic
situation and stay inlane, inparticular if
warned byLane Keepin g Assist.
GWARNING
The Lane Keepin g Assist warning does not
return the veh icleto the original lane. There is
a risk of an acc ident.
You should always steer, brake or accelerate
yourself, inparticular ifwarned byLane Keep-
ing Assist.
If you fail to adapt your driving style, Lane Keep-
ing Assist can neither reduce the risk of an acc i-
dent nor overr idethe laws of physics. Lane
Keepin g Assist cannot take into account the
road, traff icand weather conditions. Lane Keep-
ing Assist ismerely an aid.You are responsible
for the distance to the veh icle infront, for veh i-
cle speed, for braking ingood time and for stay-
ing inyour lane.
The Lane Keepin g Assist does not keep the veh i-
cle inthe lane.
The system may beimpaired or may not function
if:
Rthere ispoor vis ibility, e.g. due to insuff icient
illumi nation of the road, or due to snow, rain,
fog or spray
Rthere isglare, e.g. from oncoming traffic, the
sun or reflection from other veh icles (e.g. if
the road surface iswet)
Rthe windshield is dirty, fogged up, damaged or
covered, for instance bya sticker, inthe vicin-
ity of the camera
Rthere are no, several or unclear lane markings
for a lane, e.g. inareas with road construction
work
Rthe lane markings are worn away, dark or cov-
ered up, e.g. by dirtor snow
Rthe distance to the vehicle in front istoo small
and the lane markings thus cannot be detec-
ted
Rthe lane markings change quickly, e.g. lanes
branch off, cross one another or merge
Rthe road isnarrow and winding
Rthere are highly variable shade conditions on
the roadway
Switching on Lane Keeping Assist
XSwit ch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard
or Adaptive(Ypage 183).
If you drive at speeds above 40 mph
(60 km/ h)and lane markings are detected,
the lines in the assistance graphics display
(
Ypage 182) are shown in green. Lane Keep-
ing Assist is ready for use.
If Standard
is selected, no warning vibration
occurs if:
Ryou have switched on the turn signal. In this
event, the warnings are suppressed for a cer-
tain period of time.
Ra driving safety system intervenes, e.g. ABS,
BAS or ESP®.
When Adaptive
is selected, no warning vibra-
tion occurs if:
Ryou have switched on the turn signal. In this
event, the warnings are suppressed for a cer-
tain 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.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
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 highway.
Rthe system detects solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
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