2014 MERCEDES-BENZ CLA brake light

DISTRONIC PLUS displays in the
instrument cluster
Displays in the speedometer
Example: DISTRONIC PLUSdisplays in thespeedometer
When DISTRONIC PLUS is activated, one or
two segmentsin the set speed rangelight
up.
If DISTRONIC PLUS detectsavehicle in front,
segmentsbetween speed of the vehicle in
front"and stored speedlight up.
iFor design reasons, the speed displayed
in the speedometer may differ slightly from
the speed set for DISTRONIC PLUS.
Display when DISTRONIC PLUS is
deactivated
Vehicle in front, if detected
Distance indicator, current distance to
the vehicle in front
"Specified minimum distance to the
vehicle in front; adjustable
!Own vehicle
In the Assistance menu (Ypage 202) of the
on-board computer, you can select the
assistance display.
XSelect theAssistance Graphicfunction
using the on-board computer
(Ypage 203).
Display when DISTRONIC PLUS is
activated
Vehicle in front, if detected
Specified minimum distance to the
vehicle in front; adjustable
"Own vehicle
!DISTRONIC PLUS active (text only
appears when the cruise control lever is
actuated)
XSelect theAssistance Graphicfunction
using the on-board computer
(Ypage 203).
You will initially see the stored speed for
about five seconds when you activate
DISTRONIC PLUS.
Tips for driving with DISTRONIC PLUS
General notes
The following contains descriptions of certain
road and traffic conditions in which you must
be particularly attentive. In such situations,
brake if necessary. DISTRONIC PLUS is then
deactivated.
170Driving systems
Driving and parking

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

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

20 mph (30km/h), then warning lampon
the corresponding side lights up red. This
warning is always emitted whenavehicle
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 than7mph
(12 km/h).
The yellow indicator lamp goes out if 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.
Collision warning
If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the
corresponding turn signal, a double warning
tone sounds. Red warning lampflashes. If
the turn signal remains on, vehicles detected
are indicated by the flashing of red warning
lamp.There are no further warning tones.
Switching on Blind Spot Assist
XMake sure that Blind Spot Assist is
activated in the on-board computer
(Ypage 205).
XTurn the SmartKey to position2in the
ignition lock.
Warning lampsin the exterior mirrors
light up red for approximately
1.5 seconds and then turn yellow.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of a camera at
the top of the windshield. Lane Keeping Assist
detects lane markings on the road and warns
you before you leave your lane
unintentionally.
Lane Keeping Assist camera
If you selectkmon the on-board computer in
theDisplay Unit Speed-/Odometer
function (Ypage 206), Lane Keeping Assist
is active starting ataspeed of 60 km/h. If the
milesdisplay unit is selected, the assistance
range begins at 40 mph.
Important safety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning does not
returnthe vehicle to the original lane. There
is a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane
Keeping Assist.
If you fail to adapt your driving style, Lane
Keeping Assist can neither reduce the risk of
an accident nor override the laws of physics.
Lane Keeping Assist cannot take into account
the road, traffic and weather conditions. Lane
Keeping Assist is merely an aid. You are
responsible for the distance to the vehicle in
190Driving systems
Driving and parking

Safety systems
Display messagesPossible causes/consequences and
Solutions

Currently
Unavailable See
Operator's Manual
ABS (Anti-lock Braking System), ESP®(Electronic Stability
Program), BAS (Brake Assist), the HOLD function and hill start
assist are temporarily unavailable.
COLLISION PREVENTION ASSIST/COLLISION PREVENTION
ASSIST PLUS may also have failed.
In addition, the,andwarning 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
affected. 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 short distance on a suitable stretch of road,
making slight steering movements at a speed above 12 mph
(20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
XDrive on carefully.
XVisit a qualified specialist workshop.

Inoperative See
Operator's Manual
ABS, ESP®, BAS, the HOLD function and hill start assist are
unavailable due to a malfunction.
COLLISION PREVENTION ASSIST/COLLISION PREVENTION
ASSIST PLUS may also have failed.
In addition, the,,andwarning lamps light
up in the instrument cluster.
ATTENTION ASSIST is deactivated.
GWARNING
Display messages213
On-board computer and displays
Z

Display messagesPossible causes/consequences and
Solutions
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lockifyou
brake hard, for example.
The steerability and braking characteristics may be severely
affected. 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.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.

Currently
Unavailable See
Operator's Manual
ESP®, BAS, the HOLD function and hill start assist are temporarily
unavailable.
COLLISION PREVENTION ASSIST/COLLISION PREVENTION
ASSIST PLUS may also have failed.
In addition, theandwarning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
The self-diagnosis function might not be complete, for example.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
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 short distance on a suitable stretch of road,
making slight steering movements at a speed above 12 mph
(20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
XDrive on carefully.
XVisit a qualified specialist workshop.
214Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions

Inoperative See
Operator's Manual
ESP®, BAS, the HOLD function and hill start assist are unavailable
due to a malfunction.
COLLISION PREVENTION ASSIST/COLLISION PREVENTION
ASSIST PLUSmay also have failed.
In addition, theandwarning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continuesto function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XDrive on carefully.
XVisit a qualified specialist workshop.


Inoperative See
Operator's Manual
EBD (electronic brake force distribution), ABS, ESP®, BAS, the
HOLD function and hill start assist are not available due to a
malfunction.
COLLISION PREVENTION ASSIST/COLLISION PREVENTION
ASSIST PLUS may also have failed.
In addition, the,andwarning lamps light up in
the instrument cluster and a warning tone sounds.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. 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.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
Display messages215
On-board computer and displays
Z

Display messagesPossible causes/consequences and
Solutions
(USA
only) (Canada
only)
Please Release
Parking Brake
The red(USA only)/ (Canada only) indicatorlamp
flashes and a warning tone sounds.Acondition for automatic
release of the electric parking brake is not fulfilled (Ypage 154).
You are driving with the electric parking brake applied.
XRelease the electric parking brake manually.
The red(USA only)/ (Canada only) indicator lamp
flashes and a warning tone sounds.
You are using the electric parking brake for emergency braking
(Ypage 154).
(USA
only) (Canada
only)
Parking Brake See
Operator's Manual
The yellow warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
XSwitch the ignition off.
XPress the electric parking brake handle for at least ten seconds.
XShift the transmission toP.
XConsult a qualified specialist workshop.
The yellow warning lamp and the red(USA
only)/ (Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
XSwitch off the ignition and turn it back on.
XRelease the electric parking brake manually.
or
XRelease the electric parking brake automatically (Ypage 154).
If the electric parking brake still cannot be released:
XDo not drive on.
XConsult a qualified specialist workshop.
216Display messages
On-board computer and displays