2014 MERCEDES-BENZ CLA warning

Crossing vehicles
DISTRONIC PLUS may detect vehicles that
are crossing your lane by mistake. Activating
DISTRONIC PLUS at traffic lights with
crossing traffic, for example, could cause
your vehicle to pull away unintentionally.
HOLD function
Important safety notes
GWARNING
When leaving the vehicle, it can still roll away
despite being braked by theHOLD 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
compartment, 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.
!If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes
automatically in certain situations. To
prevent damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in
the following or other similarsituations:
Rwhen towing the vehicle
Rin the car wash
Deactivating the HOLD function
(Ypage 173).
General notes
The HOLDfunction can assistthe 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.
Activation conditions
You can activate the HOLD function if:
Rthe vehicle is stationary
Rthe engine is running or if it has been
automatically 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
Rthe transmission positionD,RorNis
engaged while driving a vehicle with an
automatic transmission
RDISTRONIC PLUS is deactivated
172Driving systems
Driving and parking

care not to scratch or damage them
(Ypage 289).
Front sensors
CenterApprox. 40in (approx.
100cm)
CornersApprox. 24in (approx.
60cm)
Rear sensors
CenterApprox. 48 in (approx.
120 cm)
CornersApprox. 32in (approx.
80cm)
Minimum distance
CenterApprox. 8in (approx. 20cm)
CornersApprox. 8in (approx. 20cm)
If there is an obstacle within this range, the
relevant warning displays light up and a
warning tone sounds. If the distance falls
below the minimum, the distance may no
longer be shown.
Warning displays
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 airvents.
The warning display for the rear area is
located on the headliner in the rear
compartment.
Warning display for the frontarea
Segments on the left-hand side of the
vehicle
Segments on the right-hand side of the
vehicle
"Segments showing operational readiness
The warning display for each side of the
vehicle is divided into five yellow and two red
segments. PARKTRONIC is operational if
yellow segments showing operational
readiness"light up.
The selected transmission position and the
directioninwhich the vehicle is rolling
determine which warning display is active
when the engine is running.
Transmission
position
Warning display
DFront area activated
R,Nor the vehicle
is rolling
backwards
Rear and front areas
activated
PNo areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the
vehicle's distance from the obstacle.
From the:
Rsixth segment onwards, you will hear an
intermittent warning tone for
approximately two seconds.
Rseventh segment onwards, you will hear a
warning tone for approximately two
176Driving systems
Driving and parking

Problems with PARKTRONIC
ProblemPossible causes/consequences and
Solutions
Only the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is then
deactivated and the
indicator lamp on the
PARKTRONIC button
lights up.
PARKTRONIC has malfunctioned and has switched off.
XIf problems persist, have PARKTRONIC checked at a qualified
specialist workshop.
Only the red segments
in the PARKTRONIC
warning displays are lit.
PARKTRONIC is then
deactivated.
The PARKTRONIC sensors are dirty or there is interference.
XCleanthe PARKTRONIC sensors (Ypage 289).
XSwitch the ignition back on.
The problem may be caused by an external source of radio or
ultrasound waves.
XSee if PARKTRONIC functions in a different location.
Active Parking Assist
General notes
Active Parking Assist is an electronic parking
aid with ultrasound. It measures the road on
both sides of the vehicle.Aparking symbol
indicates a suitable parking space. Active
steering interventioncan assistyou during
maneuvering and parking. You may also use
PARKTRONIC (Ypage 175).
Important safety notes
Active Parking Assist is merely an aid. It is not
a replacement for your attention to your
immediate surroundings. You are always
responsible for safe maneuvering, parking
and exiting a parking space. Make sure that
no persons, animals or objects are in the
maneuvering range.
When PARKTRONIC is switched off, Active
Parking Assist is also unavailable.
GWARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
result in a collision with another road user.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active
Parking Assist parking procedure.
!If unavoidable, you should drive over
obstacles such as curbs slowly and not at
a sharp angle. Otherwise, you may damage
the wheels or tires.
Active Parking Assist may possibly indicate
parking spaces which are not suitable for
parking, for example:
Rwhere parking or stopping is prohibited
Rin front of driveways or entrances and exits
Ron unsuitable surfaces
178Driving systems
Driving and parking

Parking tips:
ROn narrow roads, drive as close to the
parking space as possible.
RParking spaces that are littered or
overgrown might be identified or measured
incorrectly.
RParking spaces that are partially occupied
by trailer drawbars might not be identified
as such or be measured incorrectly.
RSnowfall or heavy rain may lead to a parking
space being measured inaccurately.
RPay attention to the PARKTRONIC
(Ypage 176) warning messages during the
parking procedure.
RYou can intervene in the steering procedure
to correct it at any time. Active Parking
Assist will then be canceled.
RWhen transporting a load which protrudes
from your vehicle, you should not use
Active Parking Assist.
RNever use Active Parking Assist when snow
chains are installed.
RMake sure that the tire pressures are
always correct. This hasadirectinfluence
on the parking characteristics of the
vehicle.
Use Active Parking Assist for parking spaces:
Rthatare parallel or at right-angles to the
direction of travel
Rthat are on straight roads, not bends
Rthat are on the same level as the road, e.g.
not on the pavement
Detecting parking spaces
Objects located above the height range of
Active Parking Assist will not be detected
when the parking space is measured. These
are not taken into account when the parking
procedure is calculated, e.g. overhanging
loads, tail sections or loading ramps of goods
vehicles.
GWARNING
If there are objects above the detection range,
Active Parking Assist may turn prematurely.
You may cause a collision as a result. There is
a risk of an accident.
If there are objects above the detection range,
stop and deactivate Active Parking Assist.
For further information on the detection
range (Ypage 175).
Active Parking Assist does not support you
with parking spaces at right-angles to the
direction of travel if:
Rtwo parking spaces are located directly
next to one another
Rthe parking space is directly next to a low
obstacle such as a low curb
Ryou park forwards
Active Parking Assist does not support you
with parking spaces that are parallel or at
right-angles to the direction of travel if:
Rthe parking space is onacurb
Rthe parking space is apparently blocked,
for example by foliage or grass paving
blocks
Rthe range of movement is too small
Rthe parking space is bordered by an
obstacle which is notclearly defined such
as a tree or a trailer
Detected parking space on the left
Parking symbol
"Detected parking space on the right
Active Parking Assist is automatically
activated when driving forwards. The system
is operational at speeds of up to
approximately 22 mph (35 km/h). While in
operation, the system independently locates
Driving systems179
Driving and parking
Z

and measures parking spaces on both sides
of the vehicle.
Active Parking Assist will only detect parking
spaces:
Rthat are parallel or at right-angles to the
direction of travel
Rthat are parallel to the direction of travel
and at least 59 in (1.5 m) wide
Rthat are parallel to the direction of travel
and at least 39.5 in (1.0m) longer than your
vehicle
Rthat are at right angles to the direction of
travel and at least 39.5 in (1.0 m) wider
than your vehicle
iIn the case of parking spaces that are at
right angles to the direction of travel,
please ensure that the parking space is
long enough to accommodate your vehicle.
When driving at speeds below 19 mph
(30 km/h), you will see parking symbol as a
status indicator in the instrument cluster.
When a parking space has been detected, an
arrow towards the right or the left also
appears. By default, Active Parking Assist
only displays parking spaces on the front-
passenger side. Parking spaces on the
driver's side are displayed as soon as the turn
signal on the driver's side is activated. When
parking on the driver's side, this must remain
switched on until you acknowledge the use of
Active Parking Assist by pressing the
button on the multifunction steering wheel.
The system automatically determines
whether the parking space is parallel or at
right-angles to the direction of travel.
Aparking space is displayed while you are
driving past it, and until you are
approximately 50 ft (15 m) away from it.
Parking
GWARNING
Active Parking Assist merely aids you by
intervening actively in the steering. If you do
not brake there is a risk of an accident.
Always apply the brakes yourself when
maneuvering and parking.
XStop the vehicle when the parking space
symbol shows the desired parking space in
the instrument cluster.
XShift the transmission to positionR.
TheStart Park Assist? Yes: OK No:
message appears in the multifunction
display.
XTo cancel the procedure:press the
button on the multifunction steering
wheel or pull away.
or
XTo park using Active Parking Assist:
press thebuttononthe multifunction
steering wheel.
ThePark Assist Active Accelerate
and Brake Observe Surroundings
message appears in the multifunction
display.
XLet go of the multifunction steering wheel.
XBack up the vehicle, being ready to brake
at all times. Do not exceed a maximum
speed of approximately5mph (10 km/h)
when backing up. Otherwise Active Parking
Assist will be canceled.
iIn tight parking spaces, you will achieve
the best parking results by backing up as
far as possible. When doing so, also
observe the PARKTRONIC messages.
XStop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
Maneuvering may be required in tight
parking spaces.
ThePark Assist Active Select D
ObserveSurroundingsmessage appears in
the multifunction display.
XShift the transmission to positionDwhile
the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction.
ThePark Assist Active Accelerate
and Brake Observe Surroundings
180Driving systems
Driving and parking

message appears in the multifunction
display.
iYou will achieve the best results by
waiting for the steering procedure to
complete before pulling away.
XDrive forwards and be ready to brake at all
times.
XStop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
ThePark Assist Active Select R
ObserveSurroundingsmessage appears in
the multifunction display.
Further transmission shifts may be
necessary.
As soon as the parking procedure is
complete, thePark Assist Finished
message appears and a warning tone sounds.
Active Parking Assist no longer supports you
with steering interventions. When Active
Parking Assist is finished, you must steer
again yourself. PARKTRONIC is still available.
XManeuver if necessary.
XAlways observe the warning messages
displayed by PARKTRONIC (Ypage 176).
Parking tips:
RThe way yourvehicle is positioned in the
parking space after parkingis dependent
on various 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 Active
Parking Assist 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
cancel the parking procedure with Active
Parking Assist.
RYou can also engage forward gear
prematurely.The vehicle redirects and
does not drive as far into the parking space.
Should a gear be changed too early, the
parking procedure will be canceled. A
sensible parking position can no longer be
achieved from this position.
Exitingaparking space
In order that Active Parking Assist can
support you whenyou exit the parking space:
Rthe border of the parking space must be
high enough.Acurb 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 maneuvering into
the parking space.
Ra maneuvering distance of at least 3.3 ft
(1.0m) must be available.
Active Parking Assist can only assist you with
exiting a parking space if you have parked the
vehicle parallel to the direction of travel using
Active Parking Assist.
XStart the engine.
XSwitch on the turn signal in the direction
you are pulling away.
XShiftthe transmission to positionDorR.
TheStart Park Assist? Yes: OK No:
message appears in the multifunction
display.
XTo cancel the procedure:press the
button on the multifunction steering
wheel or pull away.
or
XTo exitaparking space using Active
Parking Assist:press thebutton on
the multifunctionsteering wheel.
ThePark Assist Active Accelerate
and Brake Observe Surroundings
message appears in the multifunction
display.
XLet go of the multifunctionsteering wheel.
XReverse the vehicle or drive forwards, being
ready to brake at all times. Do not exceed
a maximum speed of approximately
6 mph (10 km/h) when exiting a parking
space.Otherwise Active Parking Assist will
be canceled.
XStop when PARKTRONIC sounds the
continuous warning tone, if not before.
Driving systems181
Driving an d parking
Z

XShift the transmissionto positionDorRas
required while the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction.ThePark Assist
Active Accelerate and Brake
ObserveSurroundingsmessage appears
in the multifunction 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
position.
XDrive forwards and back up as prompted by
the PARKTRONIC warning displays, several
times if necessary.
XStop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
Once you have exited the parking space
completely, the steering wheel is moved to
the straight-ahead position. You hear a tone
and the messagePark Assist Finished
appears in the multifunction display. You will
then have to steer and merge into traffic on
your own. PARKTRONIC is still available. You
can take over the steering, before the vehicle
has exited the parking space completely. This
is useful, for example when you recognize
that it is already possible to pull out of the
parking space.
Canceling Active Parking Assist
You can cancel Active Parking Assist at any
time.
XStop the movement of the multifunction
steering wheel or steer yourself.
Active Parking Assist will be canceled at
once. ThePark Assist Canceled
message appears in the multifunction
display.
or
XPress the PARKTRONIC button on the
center console (Ypage 177).
PARKTRONIC is switched off and Active
Parking Assist is immediately canceled.
ThePark Assist Canceledmessage
appears in the multifunction display.
Active Parking Assist is canceled
automatically if:
Rthe electric parking brake is engaged
Rtransmission positionPis selected
Rparking using Active Parking Assist is no
longer possible
Ryou are driving faster than 6 mph
(10 km/h)
Ra wheel spins, ESP®intervenes or fails. The
warning lamp lights up in the
instrument cluster.
Awarning tone sounds. The parking symbol
disappears and the multifunction display
shows thePark Assist Canceled
message.
If Active Parking Assist is canceled, you must
steer again yourself.
Rear view camera
General notes
Rear view camerais in the trunk lid handle.
The rear view camera is an optical parking and
maneuvering aid. It uses guide lines to show
the area behind your vehicle in the Audio/
COMAND display.
The area behind the vehicle is displayed as a
mirror image, as in the rear view mirror.
The rear view camera is protected from
raindrops and dust by meansofaflap. When
the rear view camera is activated, this flap
182Driving systems
Driving and parking

Lanes
White guide line withoutturning the
steering wheel, vehicle width including
the exterior mirrors (static)
Yellow lane marking tires at current
steering wheel angle, vehicle width to the
outer side of the wheels (dynamic)
"Red guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
!Bumper
Guide lines
!Bumper
Red guide line at a distanceof
approximately 10 in (0.25 m) from the
rear of the vehicle
Yellow guide line at a distance of
approximately 13 ft(4.0m)from the rear
of the vehicle
Vehicle center axle (marker assistance)
Yellow guide line at a distance of
approximately 3 ft (1.0 m) from the rear
of the vehicle
The lanes and guide lines are only displayed
if you have engaged reverse gear.
The distance specifications only apply to
objects that are at ground level.
Additional displays on vehicles with PARKTRONICand COMAND
Front warning display
Additional PARKTRONIC measurement
operational readiness indicator
"Rearwarning display
Vehicles with PARKTRONIC and
COMAND:if PARKTRONIC is operational
(Ypage 175), an additional operational
readiness indicator will appear in COMAND
display.If the PARKTRONIC warning
displays are active or light up, warning
displaysand"are also active or light up
correspondingly in the COMAND display.
"Reverse parking" function
XMake sure that the rear view camera is
activated and the "Reverse parking"
function is selected; see the separate
operating instructions for the audio
system/COMAND.
The lane and the guide lines are shown.
184Driving systems
Driving and parking