2014 MERCEDES-BENZ CLA warning

XHold test gaugevertically on brake
discand slide measuring pinonto
brake disc.
XCheck which colorfield!the arrow on
measuring pinis pointing to.
Green:the brake pad/lining thickness is
sufficient.
Red:the brake pad/lining thickness is not
sufficient. Have the brake pads/lining
checked at a qualified specialist workshop.
iTo avoid an inaccurate measurement:
Rmake sure you position the wheels
suitably
Rdo not put the measuring pin on a recess
in the brake disc
Driving on wet roads
Hydroplaning
If water has accumulated to a certain depth
on the road surface, there is a danger of
hydroplaning occurring, even if:
Ryou drive at low speeds.
Rthe tires have adequate tread depth.
For this reason, in the event of heavy rain or
in conditions in which hydroplaning may
occur, you must drive in the following
manner:
Rlower your speed.
Ravoid ruts.
Rbrake carefully.
Driving on flooded roads
!Do not drive through flooded areas.
Check the depth of any water before driving
through it. Drive slowly through standing
water. Otherwise, water may enter the
vehicle interior or the engine compartment.
This can damage the electronic
components in the engine or the automatic
transmission. Water can also be drawn in
by the engine's air suction nozzles and this
can cause engine damage.
Winter driving
General notes
GWARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on a slippery road surface.
GDANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open
a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Winter operation"
section (Ypage 314).
Driving with summer tires
Observe the notes in the "Winter operation"
section (Ypage 314).
Slippery road surfaces
GWARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on a slippery road surface.
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If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
XShift the transmission to positionN.
Drive particularly carefully on slippery road
surfaces.Avoid sudden acceleration, steering
and braking maneuvers. Do not use the cruise
control or DISTRONIC PLUS.
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Changes in the outside temperature are
displayed after a short delay.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges. You
should pay special attention to road
conditions when temperatures are around
freezing point.
iFor more information on driving with
snow chains, see (Ypage 315).
Driving systems
Cruise control
General notes
Cruise control maintains a constant road
speed for you.Itbrakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select a low gearin
good time. For this, you will need to have
selected manual drive program
M(Ypage 148). By doing so, you will make
use of the braking effect of the engine, This
relieves the load on the brake system and
prevents the brakes from overheating and
wearing too quickly.
Use cruise control only if road and traffic
conditions make it appropriate to maintain a
steady speed for a prolonged period. You can
store any road speed above 20 mph
(30 km/h).
Important safety notes
If you fail to adapt your driving style, cruise
control can neither reduce the risk of an
accident nor override the laws of physics.
Cruise control cannot take into account the
road, traffic and weather conditions. Cruise
control is only 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.
Do not use cruise control:
Rin road and traffic conditions which do not
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
Ron slippery road surfaces. Braking or
accelerating could cause the drive wheels
to lose traction and the vehicle could then
skid
Rwhen there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
To activate or increase speed
To activate or reduce speed
"To deactivate cruise control
!To activate at the current speed/last
stored speed
When you activate cruise control, the stored
speed is shown in the multifunction display
for five seconds.
162Driving systems
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Activation conditions
To activate cruise control, all of the following
activation conditions mustbe fulfilled:
Rthe electric parking brake must be
released.
Ryou are driving faster than
20 mph(30 km/h).
RESP®must be active, but not intervening.
Ron vehicles with automatic transmission,
the selector lever must be in positionD.
Storing, maintaining and calling up a
speed
Storing and maintaining the current
speed
You can store the currentspeed if you are
driving faster than 20 mph (30km/h).
XAccelerate the vehicle to the desired
speed.
XBriefly press the cruise control lever
upor down.
XRemove your foot from the accelerator
pedal.
Cruise control is activated. The vehicle
automatically maintains the stored speed.
iCruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient
evens out. Cruise controlmaintains the
stored speed on downhill gradients by
automatically applying the brakes.
Storing the currentspeedorcalling up the
last stored speed
GWARNING
If you call up the stored speed and it differs
from the current speed, the vehicle
accelerates or decelerates. If you do not know
the stored speed, the vehicle could accelerate
or brake unexpectedly.There is a risk of an
accident.
Pay attention to the road and traffic
conditions before calling up the stored speed.
If you do not know the stored speed, store the
desired speed again.
XBriefly pull the cruise control lever towards
you!.
XRemove your foot from the accelerator
pedal.
The first time cruise control is activated, it
stores the current speed or regulates the
speed of the vehicle to the previously
stored speed.
Settingaspeed
Keep in mind thatitmay take a briefmoment
until the vehicle has accelerated or braked to
the speed set.
XPress the cruise control lever upfor a
higher speed or downfor a lower speed.
XTo adjust the set speed in 1 mph
increments (1 km/h increments):briefly
press the cruise control lever upor
downto the pressure point.
Every time the cruise control lever is
pressed upor downthe last speed
stored is increased or reduced.
XTo adjust the set speed in 5 mph
increments (10 km/h increments):
briefly press the cruise control lever
upor downto the pressure point.
Every time the cruise control lever is
pressed upor downthe last speed
stored is increased or reduced.
iCruise control is not deactivated if you
depress the accelerator pedal. For
example, if you accelerate briefly to
overtake, cruise control adjusts the
vehicle's speed to the last speed stored
after you have finished overtaking.
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Deactivating cruise control
There are several ways to deactivate cruise
control:
XBriefly press the cruise control lever
forwards".
or
XBrake.
Cruise control is automatically deactivated if:
Rthe vehicle is secured with the electric
parking brake
Ryou are driving at less than 20 mph
(30 km/h)
RESP®intervenes or you deactivate ESP®
Ryou shift the transmissionto positionN
while driving
If cruise control is deactivated, you will hear
a warning tone. You will see theCruise
Control Offmessage in the multifunction
display for approximately five seconds.
iWhen you switch off the engine, the last
speed stored is cleared.
DISTRONIC PLUS
General notes
DISTRONIC PLUS regulates the speed and
automatically helps you maintain the
distance to the vehicle detected in front.
Vehicles are detected with the aid of the radar
sensor system. DISTRONIC PLUS brakes
automatically so that the set speed is not
exceeded.
Change into a lower gear in good time on long
and steep downhill gradients. This is
especially important if the vehicle is laden. By
doing so, you will make use of the braking
effect of the engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
If DISTRONIC PLUS detects that there is a risk
of a collision, you will be warned visually and
acoustically. DISTRONIC PLUS cannot
prevent a collision without your intervention.
An intermittent warning tone will then sound
and the distance warning lamp will light up in
the instrument cluster. Brake immediately in
order to increase the distance to the vehicle
in front or take evasive action provided it is
safe to do so.
DISTRONIC PLUS operates in range between
0 mph (0 km/h) and 120 mph (200 km/h).
Do not use DISTRONIC PLUS while driving on
roads with steep gradients.
As DISTRONIC PLUS transmits radar waves,
it can resemble the radar detectors of the
responsible authorities. You can refer to the
relevant chapter in the Operator's Manual if
questions are asked about this.
iThis device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the
device will void any warranties, and is not
permitted. Do not tamper 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.
Important safety notes
GWARNING
DISTRONIC PLUS does not react to:
Rpeople or animals
Rstationary obstacles on the road, e.g.
stopped or parked vehicles
Roncoming and crossingtraffic
As a result, DISTRONIC PLUS may neither give
warnings nor intervene in such situations.
There is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
164Driving systems
Driving and parking

GWARNING
DISTRONIC PLUS cannot always clearly
identify other road users and complextraffic
situations.
In such cases, DISTRONIC PLUS may:
Rgive an unnecessary warning and then
brake the vehicle
Rneither give a warning nor intervene
Raccelerate unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, in particular when warned to do so by
DISTRONIC PLUS.
GWARNING
DISTRONIC PLUS brakes yourvehicle with up
to 50% of the maximum possible deceleration.
If this braking force is insufficient, DISTRONIC
PLUS warns you visually and audibly.There is
a risk of an accident.
In such cases, apply the brakes yourself and
try to take evasive action.
!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 similar situations:
Rwhen towing the vehicle
Rin the car wash
If you fail to adapt your driving style,
DISTRONIC PLUS can neither reduce the risk
of accident nor override the laws of physics.
DISTRONIC PLUS cannot take into account
the road, traffic and weather conditions.
DISTRONIC PLUS is only 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.
Do not use DISTRONIC PLUS:
Rin road and traffic conditions which do not
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
Ron slippery road surfaces. Braking or
accelerating could cause the drive wheels
to lose traction and the vehicle could then
skid
Rwhen there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow
vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can
be impaired if:
Rdirt on the sensors or anything else
covering the sensors
Rsnow or heavy rain
Rinterference by other radar sources
Rstrong radar reflections, for example, in
parking garages
If DISTRONIC PLUS no longer detects a
vehicle in front, DISTRONIC PLUS may
unexpectedly accelerate the vehicle to the
stored speed.
This speed may:
Rbe too high if you are driving in a filter lane
or an exit lane
Rbe so high when driving in the right-hand
lane that you overtake vehicles in the left-
hand lane
Rbe so high when driving in the left-hand lane
that you overtake vehicles in the right-hand
lane
If there is a change of drivers, advise the new
driver of the speed stored.
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Cruise control lever
To store the currentspeed or a higher
speed
To store the currentspeed or a lower
speed
"To deactivate DISTRONIC PLUS
!To store the currentspeed or calling up
the last stored speed
To set the specified minimum distance
Activating DISTRONIC PLUS
Activation conditions
To activate DISTRONIC PLUS, all of the
following activation conditions must be
fulfilled:
Rthe engine must be started. It may take up
to two minutes after pulling away before
DISTRONIC PLUS is operational.
Rthe electric parking brake must be
released.
RESP®must be active, but not intervening.
RActive Parking Assist must not be
activated.
Rthe transmission must be in positionD.
Rthe driver's door must be closed when you
shift fromPtoDor your seat belt must be
fastened.
Rthe front-passenger door and rear doors
must be closed.
Activating
XBriefly pull the cruise control lever towards
you!or press it upor down.
DISTRONIC PLUS is selected.
XPress the cruise control lever repeatedly
upor downuntil the desired speed
is set.
XRemove your foot from the accelerator
pedal.
Your vehicle adapts its speed to that of the
vehicle in front, but only up to the desired
stored speed.
iIf you do not fully release the accelerator
pedal, theDISTRONIC PLUS Passive
message appears in the multifunction
display. The set distance to a slower-
moving vehicle in front will then not be
maintained. You will be driving at the speed
you determine by the position of the
accelerator pedal.
You can also activate DISTRONIC PLUS when
stationary. The lowest speed that can be set
is 18 mph (30 km/h).
XBriefly pull the cruise control lever towards
you!or press it upor down.
DISTRONIC PLUS is selected.
Activating at the current speed/last
stored speed
GWARNING
If you call up the stored speed and it differs
from the current speed, the vehicle
accelerates or decelerates. If you do not know
the stored speed, the vehicle could accelerate
or brake unexpectedly. There is a risk of an
accident.
Pay attention to the road and traffic
conditions before calling up the stored speed.
If you do not know the stored speed, store the
desired speed again.
166Driving systems
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XBriefly pull the cruise control lever
(Ypage 166) towards you!.
XRemove your foot from the accelerator
pedal.
DISTRONIC PLUS is activated. The first
time it is activated, the current speed is
stored. Otherwise, it sets the vehicle cruise
speed to the previously storedvalue.
Driving with DISTRONIC PLUS
Pulling awayand driving
iThe vehicle can also pull away when it is
facing an unidentified obstacle or is driving
on a differentline fromanothervehicle. The
vehicle then brakes automatically. There is
a risk of an accident. Be ready to brake at
all times.
If you depress the brake, DISTRONIC PLUS is
deactivated unless your vehicle is stationary.
XIf you want to pull away with
DISTRONIC PLUS:remove your foot from
the brake pedal.
XBriefly pull cruise control (Ypage 166)lever
towards you!.
or
XAccelerate briefly.
Your vehicle pulls away and adapts its
speed to that of the vehicle in front.
If no vehicle is detected in front, your
vehicle accelerates to the set speed.
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control.
If DISTRONIC PLUS detects that the vehicle
in fronthas slowed down, it brakes your
vehicle.Inthis way, the distance you have
selected is maintained.
If DISTRONIC PLUS detects a faster-moving
vehicle in front, it increases the driving speed.
The vehicle is only accelerated up to the
speed you have stored.
Selecting the drive program
DISTRONIC Plus supports a sporty driving
style when you have selected theSorM
driving program (Ypage 146). Acceleration
behind the vehicle in frontorto the set speed
is then noticeably more dynamic. If you have
selected theEdriving program, the vehicle
accelerates more gently. This setting is
recommended in stop-and-start traffic.
Changing lanes
If you change to the passing lane, DISTRONIC
PLUS supports you when:
Ryou are driving faster than 43.5 mph
(70 km/h)
RDISTRONIC PLUS is maintaining the
distance to a vehicle in front
Ryou switch on the appropriate turn signal
RDISTRONIC PLUS does not detect a danger
of collision
If these conditions are fulfilled, yourvehicle
is accelerated. Acceleration will be
interrupted if changing lanes takes too long
or if the distance between your vehicle and
the vehicle in frontbecomes too small.
iWhen changing lanes, DISTRONIC PLUS
monitors the left lane on left-hand drive
vehicles and the right lane on right-hand
drive vehicles.
Stopping
GWARNING
When leaving the vehicle, even if it is braked
only by DISTRONIC PLUS, it could roll away if:
Rthere is a malfunction in the system or in
the voltage supply.
RDISTRONIC PLUS has been deactivated
with the cruise control lever, e.g. by a
vehicle occupantorfrom outside the
vehicle.
Rthe electrical system in the engine
compartment, the battery or the fuses have
been tampered with.
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see this distance in the multifunction display
(Ypage 170).
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.
DISTRONIC PLUS then maintains a greater
distance between your vehicle and the
vehicle in front.
XTo decrease:turn control"in
direction.
DISTRONIC PLUS then maintains a shorter
distance between your vehicle and the
vehicle in front.
Deactivating DISTRONIC PLUS
There are several ways to deactivate
DISTRONIC PLUS:
XBriefly press the cruise control lever
forwards.
or
XBrake, unless the vehicle is stationary.
When you deactivate DISTRONIC PLUS, you
will see theDISTRONIC PLUS Offmessage
in the multifunction display for approximately
five seconds.
iThe last speed stored remains stored until
you switch off the engine. DISTRONIC PLUS
is not deactivated if you depress the
accelerator pedal.
DISTRONIC PLUS is automatically
deactivated if:
Ryou engage the electric parking brake or if
the vehicle is automatically secured with
the electric parking brake
RESP®intervenes or you deactivate ESP®
Rthe transmission is in theP,RorNposition
Ryou pull the cruise control lever towards
you in order to pull awayand the front-
passengerdoor or one of the rear doors is
open
Rthe vehicle is skidding.
Ryou activate Active Parking Assist
If DISTRONIC PLUS is deactivated, you will
hear a warning tone. You will see the
DISTRONIC PLUS offmessage in the
multifunction display for approximately five
seconds.
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