2017 MERCEDES-BENZ CLA transmission

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 winter-proofed at a qualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur-
faces. Avoid sudden acceleration, steering and
braking maneuvers. Do not use cruise control or
Distance Pilot DISTRONIC.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed: X
Shift the transmission to position N .X
Try to bring the vehicle under control using
corrective steering.
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 dis-
played 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 condi-
tions when temperatures are around freezing
point.
For more information on driving with snow
chains, see ( Y
page 285).
For more information on driving with summer
tires, see ( Y
page 284).
Observe the notes in the "Winter operation" sec-
tion ( Y
page 284).
Driving systems
Cruise control
General notes
Cruise control maintains a constant road speed
for you. It brakes 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 gear in good time.
You need to have selected manual drive pro-
gram M ( Y
page 135). By doing so, you will make
use of the braking effect of the engine. This relieves the load on the brake system and pre-
vents the brakes from overheating and wearing
too quickly.
When the engine is running, you can use the
cruise control lever to limit the speed to any
speed between 20 mph (30 km/h) and the tech-
nically permitted maximum speed of the vehicle.
Use cruise control only if road and traffic con-
ditions make it appropriate to maintain a steady
speed for a prolonged period.
The speed indicated in the speedometer may
differ slightly from the speed stored.
Important safety notes If you fail to adapt your driving style, cruise con-
trol 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: R
in road and traffic conditions which do not
allow you to maintain a constant speed e.g. in
heavy traffic or on winding roads R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid R
in 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
C
Activates or increases speed
D
Activates or reduces speed148
Driving systems
Driving and parking

R
ESP ®
intervenes or you deactivate ESP ®
R
you shift the transmission to position N while
driving
If cruise control is deactivated, you will hear a
warning tone. You will see the Cruise Con‐
trol Off message in the multifunction display
for approximately five seconds.
i When you switch off the engine, the last
speed stored is cleared.
Distance Pilot DISTRONIC
General notes Distance Pilot DISTRONIC regulates the speed
and automatically helps you maintain the dis-
tance to the vehicle detected in front. Vehicles
are detected with the aid of the radar sensor
system. Distance Pilot DISTRONIC brakes auto-
matically to avoid exceeding the set speed or to
maintain the designated distance from the vehi-
cle in front.
If Distance Pilot DISTRONIC detects that there is
a risk of a collision, you will be warned visually
and acoustically. Without your intervention, Dis-
tance Pilot DISTRONIC cannot prevent a colli-
sion. 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.
Distance Pilot DISTRONIC operates in the range
between 0 mph (0 km/h) and 120 mph
(200 km/h).
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 wear-
ing too qui ckly.
Do not use Distance Pilot DISTRONIC on roads
with steep gradients.
For Distance Pilot DISTRONIC to assist you
when driving, the radar sensor system must be
operational.
Since Distance Pilot DISTRONIC 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. i USA only: This device has been approved by
the FCC as a "Vehicular Radar System". The
radar sensor is intended for use in an auto-
motive radar system only. Removal, tamper-
ing, or altering of the device will void any war-
ranties, and is not permitted by the FCC. 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.
i Canada only: This device complies with
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
1. This device may not cause harmful inter-
ference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tam peri ng, or altering of the device
w
ill 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
G WARNING
Distance Pilot DISTRONIC does not react to: R
people or animals R
stationary objects on the road, e.g. stopped
or parked vehicles R
oncoming vehicles and crossing traffic
As a result, Distance Pilot DISTRONIC may
neither give warnings nor intervene in such
situations. There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
G WARNING
Distance Pilot DISTRONIC cannot always
clearly identify other road users and complex
traffic situations.150
Driving system s
Dr ivi ng an d parking

Activating Distance Pilot DISTRONIC Acti va tion conditions
! When Distanc e Pilo t DISTRONI C or th e
HOLD function is activated, th e vehicl e
brakes automatically in certain situations.
To avoi d damag e to th e vehicle, deactivat e
Distanc e Pilo t DISTRONI C and th e HOLD
function in th e followin g or similar situations:R
when towin g th e vehicl eR
in th e car wash
To activat e Distanc e Pilo t DISTRONIC, th e fol -
lowin g condition s mus t be fulfilled :R
th e engin e mus t be started. It may tak e up to
two minute s of drivin g before Distanc e Pilo t
DISTRONI C is read y for use.R
th e electric parking brak e mus t be released.R
ES P ®
mus t be active , but no t intervening .R
Parking Pilo t mus t no t be activated.R
th e transmission mus t be in position D .R
th e driver's door mus t be closed when you
shif t from P to D or your seat belt mus t be
fastened. R
th e front-passenger door mus t be closed.R
th e vehicl e mus t no t skid.
Acti va tingX
Briefly pull th e cruise control lever toward s
you

If Distance Pilot DISTRONIC detects a faster-
moving vehicle in front, it increases the driving
speed. However, the vehicle is only accelerated
up to the speed you have stored.
i Distance Pilot DISTRONIC is deactivated
when you depress the brake, except when the
vehicle is stationary.
Selecting the drive program Distance Pilot DISTRONIC supports a sporty
driving style when you select the S+ drive pro-
gram (Mercedes-AMG vehicles only), S
( Y
page 133) or the manual drive program
( Y
page 135). Acceleration behind the vehicle in
front or to the set speed is then noticeably more
dynamic. If you have selected the E (Mercedes-
AMG vehicles: C ) drive program, the vehicle
accelerates more gently. This setting is recom-
mended in stop-and-start traffic.
Changing lanes If when driving on multilane roads you wish to
change to the overtaking lane, Distance Pilot
DISTRONIC supports you if: R
you are driving faster than 45 mph (70 km/h) R
Distance Pilot DISTRONIC is maintaining the
distance to a vehicle in front R
you switch on the appropriate turn signal R
Distance Pilot DISTRONIC does not currently
detect a danger of collision
If these conditions are fulfilled, your vehicle is
accelerated. Acceleration will be interrupted if
changing lanes takes too long or if the distance
between your vehicle and the vehicle in front
becomes too small.
Stopping
If Distance Pilot DISTRONIC detects that the
vehicle in front is stopping, it brakes your vehicle
until it is stationary.
Once your vehicle is stationary, it remains sta-
tionary and you do not need to depress the
brake.
i After a time, the electric parking brake
secures the vehicle and relieves the service
brake.
i Depending on the specified minimum dis-
tance, your vehicle will come to a standstill at
a sufficient distance behind the vehicle in
front. The specified minimum distance is set
using the control on the cruise control lever. When Distance Pilot DISTRONIC is activated,
the transmission is shifted automatically to
position P if: R
the driver's seat belt is not fastened and the
driver's door is open. R
the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function.
The electric parking brake secures the vehicle
automatically if Distance Pilot DISTRONIC is
activated when the vehicle is stationary and: R
a system malfunction occurs. R
the power supply is insufficient.
If a malfunction occurs, the transmission may
also shift into position P automatically.
Setting a speed Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set. X
Press the cruise control lever up C for a
higher speed or down D for a lower speed.X
To adjust the set speed in1 mphincre-
ments (1 km/hincrements): briefly press
the cruise control lever up C or down D to
the pressure point.
The last stored speed increases or decreases
in 1 mph (1 km/h) increments. X
To adjust the set speed in5 mphincre-
ments (10 km/hincrements): briefly press
the cruise control lever up C or down D to
the pressure point.
The last stored speed increases or decreases
in 5 mph (10 km/h) increments.
i Distance Pilot DISTRONIC is not deactivated
if you depress the accelerator pedal. If you
accelerate to overtake, Distance Pilot
DISTRONIC adjusts the vehicle's speed to the
last speed stored after you have finished over-
taking.
Setting a specified minimum distance
You can set the specified minimum distance for
Distance Pilot DISTRONIC by varying the time
span between one and two seconds. With this
function you can set the minimum distance that
Distance Pilot DISTRONIC maintains to the vehi-
cle in front, dependent on vehicle speed. You
can see this distance in the multifunction dis-
play ( Y
page 154).Driving systems 153
Driving and parking Z

HOLD function
General notes The HOLD function can assist the driver in the
following situations: R
when pulling away, especially on steep slopes R
when maneuvering on steep slopes R
when 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
G WARNING
When leaving the vehicle, it can still roll away
despite being braked by the HOLD function if: R
there is a malfunction in the system or in
the voltage supply. R
the HOLD function has been deactivated by
pressing the accelerator pedal or the brake
pedal, e.g. by a vehicle occupant. R
the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with. R
the 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: R
when towing the vehicle R
in the car wash
Deactivating the HOLD function ( Y
page 156). Activation conditions You can activate the HOLD function if: R
the vehicle is stationary R
the engine is running or if it has been auto-
matically switched off by the ECO start/stop
function R
the driver's door is closed or your seat belt is
fastened R
the electric parking brake is released R
Distance Pilot DISTRONIC is deactivated R
the transmission position D , R or N is engaged
while driving a vehicle with an automatic
transmission
Activating the HOLD function X
Make sure that the activation conditions are
met. X
Depress the brake pedal. X
Quickly depress the brake pedal further
until C appears in the multifunction display.
The HOLD function is activated. You can
release the brake pedal.
i If 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: R
you accelerate. On vehicles with automatic
transmission: only when the transmission is in
position D or R . R
the transmission is in position P on vehicles
with automatic transmission. R
you depress the brake pedal again with a cer-
tain amount of pressure until C disappears
from the multifunction display. R
you activate Distance Pilot DISTRONIC. R
you secure the vehicle using the electric park-
ing brake.156
Driving systems
Driving and parking

i After a time, the electric parking brake
secures the vehicle and relieves the service
brake.
When the HOLD function is activated, the trans-
mission is shifted automatically to position P if:R
the driver's seat belt is not fastened and the
driver's door is open. R
the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function.
The electric parking brake secures the vehicle
automatically if the HOLD function is activated
when the vehicle is stationary and: R
a system malfunction occurs. R
the power supply is insufficient.
Start-off assist (except Mercedes-
AMG vehicles)
Important safety notes
G WARNING
If you use start-off assist, individual wheels
may start to spin and the vehicle may skid. If
ESP ®
is deactivated, there is a greater danger
of skidding and having an accident. Make sure
that no persons or obstacles are in the vicinity
of the vehicle.
Start-off assist enables optimum acceleration
from a standstill. For this, a suitably high-grip
road surface is required, along with the tires and
vehicle being in proper operating condition.
Do not activate start-off assist on public roads.
Observe the safety notes on driving safety sys-
tems ( Y
page 60).
Be sure to read the safety notes and information
on ESP ®
( Y
page 63).
Activating start-off assist X
Deactivate ESP ®
( Y
page 182).X
Turn the steering wheel to the straight-ahead
position. X
Depress the brake pedal hard with your left
foot and keep it depressed. X
Shift the transmission to position D .X
Use the DYNAMIC SELECT button to select
the S drive program ( Y
page 127). X
Quickly depress the accelerator pedal fully. X
Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum acceler-
ation.
i Activate ESP ®
as soon as the acceleration
process has ended. ESP ®
will otherwise not
be able to stabilize the vehicle if the vehicle
starts to skid or a wheel starts to spin.
Canceling start-off assist X
Remove your foot from the accelerator pedal. X
Reactivate ESP ®
.
RACE START (Mercedes-AMG vehi-
cles)
Important safety notes
i RACE START must not be used on normal
roads. RACE START must only be activated
and used on dedicated road circuits, outside
of public road use.
i RACE START is only available in
Mercedes ‑ AMG vehicles.
G WARNING
If you use RACE START, individual tires may
start to spin and the vehicle could skid.
Depending on the selected ESP ®
mode, there
is an increased risk of skidding and having an
accident. Make sure that no persons, animals
or obstacles are within range of the vehicle.
RACE START enables optimal acceleration from
a standing start. For this, a suitably high-grip
road surface is required, along with the tires and
vehicle being in proper operating condition.
i Observe the safety notes on driving safety
systems ( Y
page 60).
Be sure to read the safety notes and informa-
tion on ESP ®
( Y
page 63).
Conditions for activation
You can activate RACE START if: R
the doors, hood and the trunk lid are closed. R
the engine is running and the transmission,
all-wheel drive clutch and the engine are at
operating temperature.Driving systems 157
Driving an d parking Z

R
the steering wheel is in the straight-ahead
position. R
the vehicle is stationary and the brake pedal is
depressed (left foot). R
the transmission is in position D .R
one of the drive programs S , S+ or RACE is
selected. ( Y
page 128)
Activating RACE START X
Depress the brake pedal with your left foot
and keep it depressed. X
Pull and hold both steering wheel paddle shift-
ers. X
The RACE START Confirm: Paddle UP
Cancel: Paddle DOWN message appears in
the multifunction display. X
Release both steering wheel paddle shifters.
i If the activation conditions are no longer ful-
filled, RACE START is canceled. The RACE
START Not Possible See Operator's
Manual message appears in the multifunction
display. X
To cancel: pull the left steering wheel paddle
shifter ( Y
page 135).
or X
To confirm: pull the right steering wheel pad-
dle shifter ( Y
page 135).
The RACE START Available Depress gas
pedal message appears in the multifunction
display.
i If you do not depress the accelerator pedal
within a few seconds, RACE START is can-
celed. The multifunction display shows the
RACE START Canceled message.X
Fully depress the accelerator pedal.
The engine speed is increased.
The RACE START Release brake to start
message appears in the multifunction display.
i If you do not release the brake pedal within
a short time, RACE START will be canceled.
The multifunction display shows the RACE
START Canceled message.X
Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum acceler-
ation.
The RACE START Active message appears in
the multifunction display. RACE START is deactivated when the vehicle
reaches a speed of approximately 50 km/h.
RACE START is deactivated immediately if you
release the accelerator pedal during RACE
START or if any of the activation conditions are
no longer fulfilled. The RACE START Not Pos‐
sible or RACE START Canceled message
appears in the multifunction display.
i If RACE START is used repeatedly within a
short period of time, it is only available again
after the vehicle has been driven a certain
distance.
AMG adaptive sport suspension sys-
tem
General notes The electronically controlled damping system
works continuously. This improves driving
safety and ride comfort.
The damping is tuned individually to each wheel
and depends on: R
your driving style, e.g. sporty R
the road surface condition, e.g. bumps R
your individual selection of "Sport" or "Com-
fort"
The suspension setting is adjusted using the
corresponding button in the center console.
i The mode can also be set using the AMG
DYNAMIC SELECT controller ( Y
page 128).
Each time you start the engine with the Smart-
Key or the Start/Stop button, Comfort mode is
activated. For further information about starting
the engine, see ( Y
page 122).
Sport mode158
Driving system s
Dr ivi ng an d parking

Parking Assist PARKTRONIC
Important safety notes Parking Assist PARKTRONIC is an electronic
parking aid with ultrasound. It monitors the area
around your vehicle using six sensors in the
front bumper and six sensors in the rear
bumper. Parking Assist PARKTRONIC visually
and audibly indicates the distance between your
vehicle and an object.
Parking Assist PARKTRONIC is only 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. When maneuvering,
parking or pulling out of a parking space, make
sure that there are no persons, animals or
objects in the area in which you are maneuver-
ing.
! When parking, pay particular attention to
objects above or below the sensors, such as
flower pots or trailer drawbars. Parking Assist
PARKTRONIC does not detect such objects
when they are in the immediate vicinity of the
vehicle. You could damage the vehicle or the
objects.
The sensors may not detect snow and other
objects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic car
wash, the compressed-air brakes of a truck or
a pneumatic drill could cause Parking Assist
PARKTRONIC to malfunction.
Parking Assist PARKTRONIC may not function
correctly on uneven terrain.
Parking Assist PARKTRONIC is activated auto-
matically when you: R
switch on the ignition R
shift the transmission to position D , R or NR
release the electric parking brake
Parking Assist PARKTRONIC is deactivated at
speeds above 11 mph (18 km/h). It is reactiva-
ted at lower speeds. Range of the sensors General notes Parking Assist PARKTRONIC does not take into
account obstacles located: R
below the detection range, e.g. people, ani-
mals or objects. R
above the detection range, e.g. overhanging
loads, tail sections or loading ramps of goods
vehicles.
C
Sensors in the front bumper, left-hand side
(example)
The sensors must be free from dirt, ice or slush.
They can otherwise not function correctly. Clean
the sensors regularly, taking care not to scratch
or damage them ( Y
page 262).
Range
C
Detection range of front sensors
D
Detection range of rear sensors160
Driving systems
Driving and parking