2016 MERCEDES-BENZ CLA-Class engine

General notes
:ECO start/stop display
The ECO start/stop function is activated
whenever you start the engine using the
SmartKey or the Start/Stop button.
If the engine has been switched off automat-
ically by the ECO start/stop function, the
è ECO symbol is shown in the multifunc-
tion display.
Mercedes-AMG vehicles: the ECO start/
stop function is only available in drive pro-
gram C.
Automatic engine switch-off
If the vehicle is braked to a standstill in Dor N,
the ECO start/stop function switches off the
engine automatically.
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green.
Rthe outside temperature is within the range
that is suitable for the system.
Rthe engine is at normal operating temper-
ature.
Rthe set temperature for the vehicle interior
has been reached.
Rthe battery is sufficiently charged.
Rthe system detects that the windshield is
not fogged up when the air-conditioning
system is switched on.
Rthe hood is closed.
Rthe driver's door is closed and the driver's
seat belt is fastened.
All of the vehicle's systems remain active
when the engine is stopped automatically. The HOLD function can also 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 switch-off can take place a
maximum of four times in a row (initial stop,
then three subsequent stops)..
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function
by pressing the ECO button
Rin transmission position
Dor Nthe brake
pedal is released and the HOLD function is
not active
Ryou depress the accelerator pedal
Ryou engage reverse gear R
Ryou move the transmission out of position
P
Ryou unfasten your seat belt or open the
driver's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe battery's condition of charge is too low
Shifting the transmission to position Pdoes
not start the engine.
152Driving
Driving and parking

Problems with the engine
ProblemPossible causes/consequences andMSolutions
The engine does not
start.The HOLD function or DISTRONIC PLUS is activated.
XDeactivate the HOLD function (Ypage 187) or DISTRONIC
PLUS (
Ypage 180).
XTry to start the engine again.
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
Before attempting to start the engine again:
XTurn the SmartKey back to position 0in the ignition lock.
or
XPress the Start/Stop button repeatedly until all indicator lamps in the instrument cluster go out.
XTry to start the engine again (Ypage 149). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 319).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XAllow the starter motor to cool down for approximately two
minutes.
XTry to start the engine again.
If the engine still does not start:
XConsult a qualified specialist workshop.
154Driving
Driving and parking

ProblemPossible causes/consequences andMSolutions
The engine is not run-
ning smoothly and is
misfiring.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
XHave the cause rectified immediately at a qualified specialist
workshop.
The coolant tempera-
ture gauge shows a
value above 248 ‡
(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 no longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 299). Observe the warning
notes as you do so and add coolant if necessary.
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 char-
acteristics will change:
Rthe drive (engine and transmission man-
agement)
Rthe suspension (vehicles with damping sys-
tem or AMG adaptive sport suspension sys- tem)
Rthe steering
Rthe availability of the ECO start/stop func-
tion
Rthe climate control:
Each time you start the engine with the
SmartKey or the Start/Stop button, drive pro-
gram Cis activated. For further information
about starting the engine, see (
Ypage 149).
XPress DYNAMIC SELECT button :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 set-
tings are displayed briefly in the Audio 20 or
COMAND display.
iIn a few countries, the ECO start/stop
function is deactivated at the factory due to the available fuel grade. In this case, the
ECO start/stop function is not available in
any drive program, regardless of the display
in the Audio 20 or COMAND display.
DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)155
Driving and parking
Z

Available drive programs:
CComfortComfortable and econom-
ical driving characteristics
SSpo rtSporty driving character-
istics
IIndivi dualIndividual settings
E EconomyParticularly economical
driving characteristics
Ad ditional information for drive programs
(
Ypage 162).
You can also change gear yourself using the
steering wheel paddleshifters. For further
information on the manual drive program
(
Ypage 164).
DYNAMIC SELECT controller
(Mercedes-AMG vehicles)
Use the DYNAMIC SELECT controller to
change the drive program. Depending on the
driv e program selected the following vehicle
characteristics will change:
Rthe drive
Rthe transmission management
RESP®
Rthe suspension (vehicles with AMG adap-
tive sport suspension system)
Rthe availab ility of the ECO start /stop func-
tion
Rthe availab ility of gliding mode
Each time you start the engine with the
Sm artKey or the Start /S top button, drive pro-
gram Cis activated. For further information
about starting the engine, see (
Ypage 149).
XTurn DYNAMIC SELECT controller :as
many times as necessary unt ilthe desired
driv e program isselected.
The selected drive program appears inthe
multifunction display. After five seconds
the disp lay goes out and the status icon of
the selected drive program appears.
The drive program indicator on DYNAMIC
SE LECT controller :lights up inred.
Available drive programs:
I Indivi dualIndividual settings
CComfortComfort-oriente d,opti-
mum-economy engine
and transmission settings
S Spo rtSporty engine and trans-
mission settings
S+ Sport PlusParticularly sporty trans-
mission settings
RaceMaximum sportiness and
engine and transmission
settings suitable for the
racetrack
Additional information for drive programs
(
Ypage 162).
You can also change gear yourself using the
steering wheel paddleshifters. For further
information on the manual drive program
(
Ypage 164).
156DYNAMIC SELECT controller (Mercedes-AMG vehicles)
Driving and parking

Automa tic trans mission
Import ant safety notes
GWARNIN G
If th eengin espee dis abov eth eidlin gspee d
and you engage transmission position Dor R,
th evehicl ecould pull away suddenly. There is
a ris kof an accident.
When engagin gtransmission position Dor R,
always firmly depress th ebrak epedal and do
no tsimultaneously accelerate .
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off th eengine.
The vehicl emay rol laway. There is aris kof an
accident.
Afte rswitching off th eengine, always switch
to parking position P.Preven tth eparked vehi-
cle from rollin gaway by applyin gth eparking
brake.
DIRECT SELECT lever
Overview oftrans mission positions
jPark position wit hparking loc k
kReversegear
iNeutral
hDrive
All vehicles (excep tMercedes-AM G vehi-
cles): theDIRECT SELECT lever is on th eright
of th esteering column . Fo
rinformation on th eselector lever in
Mercedes-AM Gvehicles (
Ypage 159).
The DIRECT SE LECT lever always return sto
it s original position .The curren ttransmission
position P,R,N or Dappear sin th etransmis -
sion position display in th emultifunction dis-
play (
Ypage 157).
Trans mission position and drive pr o-
gram display
The curren ttransmission position and driv e
program appear in th emultifunction display.
:Transmi ssion position
;Gear
=Drive program display
The arrows in th etransmission position dis-
play sho whow and int owhic htransmission
position syou can shif tusin gth eDIRECT
SE LECT lever.
If th etransmission position display in th emul-
tifunction display is no tworking ,you should
pull away carefully to chec kwhether th e
desired transmission position is engaged.
Ideally, you should select transmission posi-
tion Dand driv eprogram Eor S.
Engaging pa rkposition P
!If th eengin espee dis to ohigh or th evehi-
cle is moving ,do no tshif tth eautomatic
transmission directly from Dto R,from Rto
D or directly to P.The automatic transmis -
sion could otherwise be damaged.
Automatic transmission15 7
Driving an d parking
Z

jPark position with parking lock
kReverse gear
iNeutral
hDrive
XPush the DIRECT SELECT lever in the direc-
tion of arrowP.
Transmission position display Pis shown in
the multifunction display.
When you have engaged park position P,
make sure that the transmission position dis-
play shows Pin the multifunction display.
You can only engage park position Pwhen the
vehicle is stationary.
Depressing the brake and pushing the
DIRECT SELECT lever up or down disengages
the parking lock. The transmission is in N
neutral.
At transmission fluid temperatures below
Ò4 ‡ (Ò20 †), you can only shift out of park
position Pinto another transmission position
when the engine is running.
In order to shift from park position Pdirectly
into Ror D:
Rdepress the brake pedal and
Rpush the DIRECT SELECT lever up or down
past the first point of resistance
Engaging park position P automatically
Park position Pis automatically engaged if:
Ryou switch off the engine using the Smart-
Key and remove the SmartKey
Ryou switch off the engine using the Smart-
Key or using the Start/Stop button and open the driver's door or front-passenger
door
Rthe driver's door is opened when the vehi-
cle is stationary or driving at very low speed
and the transmission is in position Dor R
Under certain conditions, the automatic
transmission shifts automatically to transmis-
sion position Pif the HOLD function or
DISTRONIC PLUS is activated. Observe the
information on the HOLD function
(
Ypage 188) and on DISTRONIC PLUS
(
Ypage 183).
Engaging reverse gear R
!Only shift the automatic transmission to R
when the vehicle is stationary.
XIf the transmission is in position Dor N:
push the DIRECT SELECT lever up past the
first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT
SELECT lever up past the first point of
resistance.
The ECO start/stop function is not available
when reverse gear is engaged. Further infor-
mation on the ECO start/stop function
(
Ypage 152).
Shifting to neutral N
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
158Automatic transmission
Driving and parking

When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
XIf the transmission is in positionDor R:
push the DIRECT SELECT lever up or down
to the first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT
SELECT lever up or down to the first point of
resistance.
If you switch the engine off with the trans-
mission in position Ror D, the automatic
transmission shifts to Nautomatically.
With the SmartKey: if you then open the
driver's door or the front-passenger door or
remove the SmartKey from the ignition, the
automatic transmission shifts to Pautomati-
cally.
With the Start/Stop button: if you then
open the driver's door or the front-passenger
door, the automatic transmission shifts to P
automatically.
If you want the automatic transmission to
remain in neutral N, e.g. when having the
vehicle cleaned in an automatic car wash with
a towing system:
Using the SmartKey:
XSwitch on the ignition.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the Smart-
Key in the ignition lock.
With the Start/Stop button:
XRemove the Start/Stop button from the
ignition lock.
XInsert the SmartKey into the ignition lock.
XSwitch on the ignition.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the Smart-
Key in the ignition lock.
Engaging drive position D
XIf the transmission is in position Ror N:
push the DIRECT SELECT lever down past
the first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT
SELECT lever down past the first point of
resistance.
Selector lever (Mercedes-AMG vehi-
cles)
Overview of transmission positions
jPark position with parking lock
kReverse gear
iNeutral
hDrive
Transmission position and drive pro-
gram display
The current transmission position and drive
program appear in the multifunction display.
Automatic transmission159
Driving and parking
Z

:Transmission position display
;Drive program display
If the transmission position display in the mul-
tifunction display is not working, you should
pull away carefully to check whether the
desired transmission position is engaged.
Ideally, you should select transmission posi-
tion Dand drive program Cor S.
Engaging park position P
XWhen the vehicle is stationary, press but-
ton :.
Transmission positions
BPark position
This prevents the vehicle from roll-
ing away when stopped.
Only shift the transmission into
position Pwhen the vehicle is sta-
tionary (
Ypage 157). The parking
lock should not be used as a brake
when parking. Always apply the
electronic parking brake in addi-
tion to the parking lock in order to
secure the vehicle.
If the vehicle electronics are mal-
functioning, the transmission may
be locked in position P. Have the
vehicle electronics checked imme-
diately at a qualified specialist
workshop.
Park position Pis automatically
engaged if:
Ryou switch off the engine using
the SmartKey and remove the
SmartKey
Ryou switch off the engine using
the SmartKey or using the Start/ Stop button and open the driv-
er's door or front-passenger
door
Rthe driver's door is opened when
the vehicle is stationary or driv-
ing at very low speed and the
transmission is in position Dor R
CReverse gear
Only shift the transmission into
position Rwhen the vehicle is sta-
tionary.
160Automatic transmission
Driving and parking