2016 MERCEDES-BENZ CLA COUPE engine

position
Dor R, the vehicle may accelerate
suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always keep the brake pedal firmly depressed
and do not depress the accelerator pedal at
the same time.
! Vehicles with manual transmission:
change gear in good time and avoid spinning
the wheels. You could otherwise damage the
vehicle.
Depress the accelerator carefully when pulling
away.
The vehicle automatically locks centrally once
you have pulled away. The locking knobs in the
doors drop down.
You can open the doors from the inside at any
time.
You can also deactivate the automatic door
locking system (Y page 211).
Vehicles with automatic transmission: it is
only possible to shift the transmission from posi-
tion Pto the desired position if you depress the
brake pedal. Only then can the parking lock be
deactivated.
All vehicles (except Mercedes-AMG vehi-
cles): if you do not depress the brake pedal, the
DIRECT SELECT lever can still be moved but the
parking lock remains engaged.
Mercedes-AMG vehicles: if you do not depress
the brake pedal, the selector lever can still be
moved but the parking lock remains engaged.
Vehicles with automatic transmission: at
transmission fluid temperatures below Ò20 †,
you can only shift out of position Pinto another
transmission position when the engine is run-
ning.
i Vehicles with automatic transmission:
upshifts take place at higher engine speeds
after a cold start. This helps the catalytic con- verter to reach its operating temperature
more quickly.
Vehicles with automatic transmission: infor-
mation on automatically releasing the electric
parking brake (Y page 158). Pulling away with a trailer
To ensure that you do not roll backwards when
pulling away on an uphill slope, apply the electric
parking brake.
X Press and hold handle :.
The electric parking brake continues to brake
and prevents the vehicle from rolling back-
wards.
The red !indicator lamp in the instrument
cluster remains lit.
X Depress the accelerator pedal.
X As soon as the vehicle/trailer combination is
held by the driving force of the engine, release
handle :.
The electric parking brake is released
The red !indicator lamp in the instrument
cluster goes out.
Further information on the electric parking
brake (Y page 157).
Hill start assist Hill start assist helps you when pulling away for-
wards or in reverse on an uphill gradient. It holds the vehicle for a short time after you have
removed your foot from the brake pedal. This
gives you enough time to move your foot from
the brake pedal to the accelerator pedal and
depress it before the vehicle begins to roll. G
WARNING
After a while, hill start assist no longer holds
the vehicle and it may roll away. There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist. 136
DrivingDriving and parking

Hill start assist is not active if:
R you are pulling away on a level road or a
downhill gradient
R on vehicles with automatic transmission, the
transmission is in position N
R the electric parking brake is applied
R ESP ®
is malfunctioning
Further information on holding the vehicle sta-
tionary on uphill gradients (Y page 148).ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
When pulling away again, the engine starts auto-
matically. The ECO start/stop function thereby
helps you to reduce the fuel consumption and
emissions of your vehicle.
Important safety notes G
WARNING
If the engine is switched off automatically and you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving. There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes :
ECO start/stop display
The ECO start/stop function is activated when-
ever you start the engine using the key or the
Start/Stop button.
If the è symbol is shown on the multifunction
display, the ECO start/stop function switches the engine off automatically if the vehicle stops
moving.
If the ECO start/stop function has been man-
ually deactivated (Y page 138) or a malfunction
has caused the system to be deactivated, the
è orç ECO symbol is not displayed.
Mercedes-AMG vehicles: the ECO start/stop
function is only available in drive program C.
Automatic engine switch-off General notes
The ECO start/stop function is operational and
the è ECO symbol is displayed on the mul-
tifunction display if:
R the indicator lamp in the ECO button is lit
green
R the outside temperature is within the range
that is suitable for the system
R the engine is at normal operating temperature
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently charged
R the system does not detect moisture on the
windscreen when the air-conditioning system
is switched on
R the bonnet is closed
R the driver's door is closed and the driver's
seat belt is fastened
If all conditions for automatic engine switch-off
are not fulfilled, the çECO symbol is shown.
All the vehicle's systems remain active when the engine is switched off automatically.
The engine can be switched off automatically a
maximum of four times (initial stop, then three
subsequent stops) in succession. The çECO
symbol is shown on the multifunction display
after the engine has been started automatically
for the fourth time. When the èECO symbol
is shown on the multifunction display, automatic
engine switch-off is possible again.
Vehicles with manual transmission Driving
137Driving and parking Z

The ECO start/stop function switches off the
engine automatically at low speeds.
X Brake the vehicle.
X Shift to neutral N(Y page 142), (follow gear-
shift instructions :to shift into neutral N, if
necessary).
X Release the clutch pedal.
The engine is switched off automatically.
Vehicles with automatic transmission If the vehicle is braked to a standstill with the
transmission in Dor N, the ECO start/stop func-
tion switches off the engine automatically.
The HOLD function can be activated if the
engine has been switched off automatically. It is
then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
Automatic engine start General notes
The engine is started automatically if:
R you deactivate the ECO start/stop function
by pressing the ECO button
R you engage reverse gear R
R you unfasten your seat belt or open the driv-
er's door
R the vehicle starts to roll
R the brake system requires this
R the temperature in the vehicle interior devi-
ates from the set range
R the system detects moisture on the wind-
screen when the air-conditioning system is
switched on
R the battery's charge status is too low
Vehicles with manual transmission
! Only engage gear when the clutch pedal is
depressed.
The engine is started automatically if you:
R depress the clutch pedal fully
R depress the accelerator pedal Vehicles with automatic transmission
The engine is started automatically if you:
R release the brake pedal in transmission posi-
tion Dor Nwhen the HOLD function is not
active
R depress the accelerator pedal
R move the transmission out of position P
Shifting the transmission to position Pdoes not
start the engine.
If you shift the transmission from Rto D, the
ECO start/stop function is available again as
soon as the èsymbol reappears on the mul-
tifunction display.
Switching the ECO start/stop function
off/on X
To deactivate: press ECO button :.
Indicator lamp ;and the èorç ECO
symbol on the multifunction display go out.
X To activate: press ECO button :.
Indicator lamp ;lights up.
If all conditions for the automatic engine
switch-off (Y page 137) are fulfilled, the è
ECO symbol is shown in the multifunction dis- play.
If all conditions for the automatic engine
switch-off (Y page 137) are not fulfilled, the
ç ECO symbol is shown in the multifunc-
tion display. If this is the case, the ECO start/
stop function is not available.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi- cle stops. 138
DrivingDriving and parking

AMG performance exhaust system
(Mercedes-AMG vehicles)
You can choose between different AMG Per-
formance exhaust system volumes using the
position of the exhaust flap.
If the ignition is switched off for less than four
hours, the previously selected setting is activa-
ted when the engine is next started. If the igni-
tion is switched off for more than four hours, the quietest setting is activated when the engine is
next started. Setting the volume:
X Press button :.
If you select the loudest setting, indicator
lamp ;lights up. Problems with the engine
Problem
Possible causes/consequences and
M MSolutions The engine does not
start. The HOLD function or Distance Pilot DISTRONIC is activated.
X Deactivate the HOLD function (Y page 172) or Distance Pilot
DISTRONIC (Y page 171).
X Try to start the engine again. The engine does not
start. The starter motor
is turning audibly. R
The engine electronics are malfunctioning.
R The fuel supply is malfunctioning.
Before attempting to start the engine again:
X Turn the key back to position 0in the ignition lock.
or X Press the Start/Stop button repeatedly until all indicator lamps on
the instrument cluster go out.
X Start the engine again (Y page 134). Avoid excessively long and
frequent attempts to start the engine, as this will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. Driving
139Driving and pa rking Z

Problem
Possible causes/consequences and
M
MSolutions The engine does not
start. The starter motor
is turning audibly. The
reserve fuel warning
lamp is lit and the fuel
gauge display shows 0. The fuel tank is empty.
X Refuel the vehicle. The engine does not
start. The starter motor
is not turning audibly. The on-board voltage is too low because the battery is too weak or
discharged.
X Jump-start the vehicle (Y page 301).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to excessively high thermal load.
X Allow the starter motor to cool down for approximately two minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. Vehicles with a petrol
engine:
The engine is not running
smoothly and is misfir-
ing. The engine electronics or a mechanical component of the engine
management system are/is malfunctioning.
X Depress the accelerator pedal only slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
X Have the cause rectified immediately at a qualified specialist work-
shop. The coolant temperature
display is showing more
than 120 †. The coolant warning lamp may also
be on and a warning tone
may sound. The coolant level is too low. The coolant is too hot and the engine is not
being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 283). Observe the warning notes
as you do so and top up the coolant if necessary. If the coolant level is correct, the engine radiator fan may be faulty. The
coolant is too hot and the engine is not being cooled sufficiently.
X If the coolant temperature is below 120 †, you can continue driving
to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic. 140
DrivingDriving and parking

DYNAMIC SELECT button (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change the drive program. Depending on the drive program
selected, the following vehicle characteristics
will change:
R The drive (engine and transmission manage-
ment)
R the suspension (vehicles with adjustable
damping or AMG RIDE CONTROL)
R the steering
R the availability of the ECO start/stop function
R the climate control
If the ignition is switched off for less than four
hours, the previously selected drive program is
activated when the engine is next started. If the
ignition is switched off for more than four hours,
drive program Cis activated when the engine is
next started. X
Press DYNAMIC SELECT controller :as
many times as necessary until the desired
drive program is selected.
The selected drive program appears in the
multifunction display. After five seconds the
display goes out and the status icon of the
selected drive program appears.
In addition, the current drive program settings are shown briefly on the display of the multi-
media system.
i In a few countries, the ECO start/stop func-
tion is deactivated at the factory due to the
quality of the available fuel. In this case, the
ECO start/stop function is not available in any
drive program, regardless of what is shown on
the multimedia system display. Available drive programs: C
Comfort Comfortable and economi-
cal driving characteristics
S
Sport Sporty driving characteris-
tics
I
Individual Individual settings
E
Economy Particularly economical
driving characteristics
Additional information on drive programs
(Y
page 148).
You can also change gear yourself using the
steering wheel gearshift paddles. Further infor-
mation on manual gearshifting (Y page 150). DYNAMIC SELECT controller
(Mercedes-AMG vehicles)
Use the DYNAMIC SELECT controller to change
the drive program. Depending on the drive pro-
gram selected, the following vehicle character-
istics will change:
R the drive
R the transmission management
R ESP ®
R the suspension (vehicles with AMG RIDE
CONTROL)
R the availability of the ECO start/stop function
R the availability of gliding mode
If the ignition is switched off for less than four
hours, the previously selected drive program is
activated when the engine is next started. If the
ignition is switched off for more than four hours,
drive program Cis activated when the engine is
next started. DYNAMIC SELECT cont
roller (Mercedes-AMG vehi cles)
141Driving and pa rking Z

X
Turn DYNAMIC SELECT controller :as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display. After five seconds the
display goes out and the status icon of the
selected drive program appears.
The drive program indicator on DYNAMIC
SELECT controller :lights up in red.
Available drive programs: I
Individual Individual settings
C
Comfort Comfort-orientated, engine
and transmission settings
optimised for economy
S
Sport Sporty engine and trans-
mission settings
S+
Sport Plus Particularly sporty trans-
mission settings
RACE
Maximum sportiness and
engine and transmission
settings suitable for the
racetrack
Additional information on drive programs
(Y page 148).
You can also change gear yourself using the
steering wheel gearshift paddles. Further infor-
mation on manual gearshifting (Y page 150).Manual transmission
Gear lever
! Only engage gear when the clutch pedal is
depressed.
! When shifting to
5thand 6thgear, you must
press the shift lever to the right. Otherwise,
you could shift unintentionally into 3rdor4th
gear and damage the engine or transmission.
If you shift down at too high a speed (trans-
mission braking), this can cause the engine to
overrev, leading to engine damage.
Do not use the clutch bite point to keep the
vehicle stationary on uphill gradients. There is otherwise a risk of damaging the clutch.
! On long and steep downhill gradients, espe-
cially if the vehicle is laden or towing a trailer, you must shift into gear
1, 2or3in good time.
This uses the engine's braking effect. This
relieves the load on the brake system and
prevents the brakes from overheating and
wearing too quickly. k
Reverse gear
1 -6
Forward gears Shifting to neutral N
X
Depress the clutch pedal fully.
X Shift the gear lever to position N:. Engaging reverse gear
! Only shift into reverse gear
Rwhen the vehi-
cle is stationary. Otherwise, you could dam-
age the transmission.
X Pull the gear lever up, push it to the left and
then pull it back.
The ECO start/stop function is not available
when reverse gear is engaged. For further infor- mation on the ECO start/stop function, see
(Y page 137). 142
Manual transmissionDriving and parking

Gearshift recommendation
The gearshift recommendation assists you in
adopting a fuel-efficient driving style. The rec-
ommended gear is shown on the multifunction
display.
X Shift gear according to gearshift recommen-
dation :when shown in the multifunction
display of the instrument cluster. Drive programs
Drive program C (Comfort) Drive program
Cis characterised by the follow-
ing:
R the vehicle exhibits comfortable, economical
driving characteristics.
R the vehicle has improved driving stability, e.g.
on slippery road surfaces.
Drive program S (Sport) Drive program
Sis characterised by the follow-
ing:
R sporty engine settings.
Drive program I (Individual) In drive program
I, the following properties of
the drive program can be selected:
R the drive (engine and transmission manage-
ment)
R the suspension (vehicles with adjustable
damping)
R the steering
R the availability of the ECO start/stop function
R the climate control
Information on configuring drive program Iwith
the multimedia system can be found in the Dig-
ital Owner's Manual. Drive program E (Economy) Drive program
Eis characterised by the follow-
ing:
R the vehicle exhibits particularly economical
driving characteristics.
R the vehicle has improved driving stability, e.g.
on slippery road surfaces.
R the performance of the air-conditioning and
heating systems is reduced. Automatic transmission
Important safety notes
G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate. G
WARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake. Automatic transmission
143Driving and parking Z