engine MERCEDES-BENZ CLA 2014 Repair Manual

The clutch may overheat if you hold the
vehicle stationary on uphill gradients by
depressing the accelerator pedal. If the clutch
overheats, a warning tone sounds.
All vehicles (except AMG vehicles):the
StopVehicleShifttoPLeaveEngine
Runningdisplay message appears in the
multifunction display.You will only be able to
continue your journey once the clutch has
cooled down and the display message in the
multifunction display has disappeared.
AMG vehicles:theTrans. Oil
Overheated Drive on with Caredisplay
message appears in the multifunction
display.
Do not hold the vehicle stationary on uphill
gradients by depressing the accelerator
pedal. Instead, only ever hold the vehicle
stationary on uphill gradients by:
Rdepressing the brake pedal
Ractivating the HOLD function
Rengaging the electric parking brake
Kickdown
AMG vehicles:kickdown is only possible in
temporary manual drive programM. For
further information on manual drive program
M(Ypage 148).
Use kickdown for maximum acceleration:
XDepress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a
lower gear depending on the engine speed.
XEase off the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts back up.
Rocking the vehicle free
Shifting the transmission repeatedly between
gearsDandRmay help to free the vehicle if
it has become stuck in slush or snow. The
vehicle's engine management system limits
the speed to a maximum of 5 mph (9 km/h)
when shifting back and forth. To shift back
and forth between transmission positionsD
andR, move the selector lever up and down
beyond the pressure point.
Programselector button
General notes
The program selectorbutton allows you to
choose between drive programs with
different driving characteristics.
Example: program selector button
EEconomyComfortable, economical
driving
SSportSporty driving style
MManualManual gear shifting
Only change from automatic drive program
EorSto manual drive programMwhen the
vehicle is stationary.
XPress program selector button
repeatedly until the letterfor the desired
gearshift program appears in the
multifunction display.
iThe automatic transmission shifts to
automatic drive programEeach time the
engine is started.
iFor further information on the automatic
drive program, see (Ypage 147).
146Automatic transmission
Driving and parking

AMG vehicles
CControlled
Efficiency
Comfortable, economical
driving
SSportSporty driving style
MManualManual gear shifting
Only change from automatic drive program
CorSto manual drive programMwhen the
vehicle is stationary.
XPress program selector button
repeatedly until the letterfor the desired
gearshift program appears in the
multifunction display.
iThe automatic transmission shifts to
automatic drive programCeach time the
engine is started.
iFor further information on the automatic
drive program, see (Ypage 147).
Steering wheel paddle shifters
Left steering wheel paddle shifter (shifts
down)
Right steering wheel paddle shifter (shifts
up)
In drive programM, you can change gear
yourself using the steering wheel paddle
shifters.
If you pull the left or right steering wheel
paddle shifter when in automatic drive
programE(drive programCon AMG vehicles)
orS, the automatic transmission shifts into
drive programMfor a limited time.
Depending on which paddle shifter is pulled,
the automatic transmission immediately
shifts into the next gear down or up.
AMG vehicles:you can activate drive
programMRACE START (Ypage 173) using
the steering wheel paddle shifters.
iYou can only change gear with the
steering wheel paddle shifters when the
transmission is in positionD.
iFor further information on the manual
drive program, see (Ypage 148).
Automatic drive program
Drive programE(drive programCon MAG
vehicles) is characterized by the following:
Rcomfort-oriented engine settings
Roptimal fuel consumption resulting from
the automatic transmission shifting up
sooner
Automatic transmission147
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Rthe vehicle pulling away moregently in
forward and reverse gears, unless the
accelerator pedal is depressed fully
Rincreased sensitivity. This improves driving
stability on slippery road surfaces, for
example
Rthe automatic transmission shifting up
sooner.This results in the vehicle being
driven at lower engine speeds and the
wheels being less likely to spin
Drive programSis characterized by the
following:
Rsporty engine settings
Rthe automatic transmission shifting up
later
Rthe fuel consumption possibly being higher
as a result of the later automatic
transmission shift points
Manual drive program
Introduction
In manual drive programM, you can change
gear yourself by using the steering wheel
paddle shifters. For this, the transmission
must be in positionD. The gear currently
selected and engaged is shown in the
multifunction display.
Manual drive programMdiffers from drive
programsE(drive programCon AMG
vehicles) andSwith regard to spontaneity,
responsiveness and smoothness of gear
changes.
GearDriving situations
You can use the engine's braking
effect
\nYou can use the braking effect of
the engine on downhill gradients
and for driving:
Ron steep mountain roads
Rin mountainous terrain
Rin arduous conditions
To use the braking effect of the
engine on extremely steep downhill
gradients and on long downhill
stretches
Switching on the manual drive program
Activating permanently
XPress the program selector button
(Ypage 146) repeatedly untilMappears in
the multifunction display.
Manual drive programMremains active
until drive programE(drive programCon
AMG vehicles) orSis selected.
Activating temporarily
XPull the right or left steering wheel paddle
shifter (Ypage 147).
Mis shown in the multifunction display.
Manual drive programMis temporarily
active. Depending on which paddle shifter
is pulled, the automatic transmission
immediately shifts into the next gear down
or up.
iWhen manual drive programMis
activated via the steering wheel paddle
shifters, the temporarily active manual
drive programMwill be deactivated
automatically after a limited time, if the
driving situation permits. The automatic
transmission switches to the previously
activated drive programE(drive program
Con AMG vehicles) orS.When driving on
downhill gradients, the temporarily active
manual drive programMwill only be
deactivated if the accelerator pedal is
depressed while the vehicle is rolling
downhill.
148Automatic transmission
Driving and parking

Upshifting
XPull the right-hand steering wheel paddle
shifter (Ypage 147).
The automatic transmission shifts up to the
next gear.
iAll vehicles (except AMG vehicles):in
order to preventengine damage the
automatic transmission automatically
shifts up:
Rif the maximumengine speed on the
currently engaged gear is reached and
Ryou continue to accelerate.
AMGvehicles:
!In manual drive programM, the automatic
transmission does not shiftup
automatically evenwhen the engine
limiting speed for the current gear is
reached. When the engine limiting speed is
reached, the fuel supply is cut to prevent
the engine from overrevving. Always make
sure that the engine speed does not reach
the red area of the tachometer. There is
otherwise a risk of engine damage.
AMG vehicles
!In manual drive programM, the automatic
transmission does not shift up
automatically even when the engine
limiting speed for the current gear is
reached. When the engine limiting speed is
reached, the fuel supply is cut to prevent
the engine from overrevving. Always make
sure that the engine speed does not reach
the red area of the tachometer. There is
otherwise a risk of engine damage.
Gear indicator
Upshift indicator
Before the engine speed reaches the red area,
an upshift indicator will be shown in the
multifunction display.
XIf the color in the speedometer
multifunction display changes to red and
theUPdisplay message is shown, shift up
a gear.
Downshifting
XPull the left-hand steering wheel paddle
shifter (Ypage 147).
The automatic transmission shifts down to
the next gear.
iIf you slow down or stop without shifting
down, the automatic transmission
automatically shifts down.
iFor maximum acceleration, pull the left-
hand steering wheel paddle shifter until the
transmission selects the optimum gear for
the current speed.
iIf the engine exceeds the maximum
engine speed when shifting down, the
automatic transmission protects against
engine damage by not shifting down.
Kickdown
AMG vehicles:kickdown is only possible in
temporary manual drive programM.
You can also use kickdown for maximum
acceleration in manual drive programM.
XDepress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a
lower gear depending on the engine speed.
XShift back up once the desired speed is
reached.
iDuring kickdown, you cannot change gear
using the steering wheel paddle shifters.
iIf you apply full throttle, the automatic
transmission shifts up to the next gear
when the maximum engine speed is
Automatic transmission149
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reached. This prevents the engine from
overrevving.
Switching off the manual drive program
XPress the programselectorbutton
(Ypage 146) repeatedly untilEorS
appears in the multifunction display.
Deactivatingthe temporary manual drive
program
XPull and hold the right steering wheel
paddle shifter until the automatic
transmission shifts into the last active
automatic drive programE(drive program
Con AMG vehicles) orS.
iWhen manual drive programMis
deactivated, the automatic transmission in
automatic drive programE(drive program
Con AMG vehicles) orSmay shift from the
current gearinto a higherorlower gear.
This is dependent on the position of the
accelerator pedal, speed and load.
150Automatic transmission
Driving and parking

Problems with the transmission
ProblemPossible causes/consequences and
Solutions
The transmission has
problems shifting gear.
The transmission is losing oil.
XHave the transmission checked at a qualified specialist
workshop immediately.
The acceleration ability
is deteriorating.
The transmission no
longer shifts into all of
the gears.
Reverse gear can no
longer be engaged.
The transmission is in emergency mode.
XStop the vehicle.
XShift the transmission to positionP.
XSwitch off the engine.
XWait at least 10 seconds before restarting the engine.
XShift the transmission to positionD.
XHave the transmission checked at a qualified specialist
workshop immediately.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and
explosion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before
refueling.
GWARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance
without delay.
RIf fuel is swallowed, seek medical
assistance without delay.Donot induce
vomiting.
RImmediately change out of clothing which
has come into contact with fuel.
GWARNING
Electrostatic buildup can create sparks and
ignite fuel vapors. There is a risk of fire and
explosion.
Always touch the vehicle body before opening
the fuel filler flap or touching the fuel pump
nozzle. Any existing electrostatic buildup is
thereby discharged.
!Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the
ignition if you accidentally refuel with the
wrong fuel. Otherwise, the fuel will enter
the fuel system. Even small amounts of the
wrong fuel could result in damage to the
fuel system and the engine. Notify a
qualified specialist workshop and have the
fuel tank and fuel lines drained completely.
Refueling151
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!Overfilling the fuel tank could damage the
fuel system.
!Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
!Use a filter when refueling from a fuel can.
Otherwise, the fuel lines and/or injection
system could be blocked by particles from
the fuel can.
Do not get into the vehicle againduring the
refueling process. Otherwise, electrostatic
charge could build up again.
If you overfill the fuel tank, fuel could spray
out when the fuel pump nozzle is removed.
Forfurther information on fuel and fuel quality
(Ypage 346).
Refueling
Opening/closing the fuel filler flap
To open the fuel filler flap
Tire pressure table
"To insert the fuel filler cap
!Fuel type to be used
The fuel filler flap is unlocked or locked
automatically when you open or close the
vehicle with the SmartKey.
The position of the fuel filler cap is displayed

in the instrumentcluster.The arrow on
the filling pump indicates the side of the
vehicle.
Opening
XSwitch the engine off.
XRemove the SmartKey from the ignition
lock.
XPress the fuel filler flap in the direction of
arrow.
The fuel filler flap swings up.
XTurn the fuel filler flap counter-clockwise
and remove it.
XInsert the fuel filler cap into holder on the
inside of fuel filler flap".
XCompletely insert the filler neck of the fuel
pump nozzle into the tank, hook in place
and refuel.
XOnly fill the tank until the pump nozzle
switches off.
iDo not add any more fuel after the pump
stops filling for the first time. Otherwise,
fuel may leak out.
Closing
XReplace the cap on the filler neck and turn
clockwise until it engages audibly.
XClose the fuel filler flap.
iClose the fuel filler flap before locking the
vehicle.
iIf you are driving with the fuel filler cap
open, thereserve fuel warning lamp
flashes.Amessage appears in the
multifunction display (Ypage 228).
In addition, theCheck Engine warning
lamp may light up (Ypage 248).
For further information on warning and
indicator lamps in the instrument cluster,
see (Ypage 248).
152Refueling
Driving and parking

Problems with fuel and the fuel tank
ProblemPossible causes/consequences and
Solutions
Fuel is leaking from the
vehicle.
The fuel line or the fuel tank is faulty.
GWARNING
Risk of explosion or fire.
XTurn the SmartKey to position0in the ignition lock immediately
and remove it (Ypage 137).
XDo not restart the engine under any circumstances.
XConsult a qualified specialist workshop.
The fuel filler flap
cannot be opened.
The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
XUnlock the vehicle (Ypage 72).
or
XUnlock the vehicle using the mechanical key (Ypage 73).
The fuel filler flap is unlocked, but the opening mechanism is
jammed.
XConsult a qualified specialist workshop.
Parking
Important safety notes
GWARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable
materials come into contact with parts of the
vehicle which are hot. Take particular care not
to park on dry grassland or harvested grain
fields.
GWARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking positionP.
Rstart the engine.
In addition, they may operate vehicle
equipment and become trapped. There is a
risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
!Always secure the vehicle correctly
against rolling away.Otherwise, the vehicle
or its drivetraincould be damaged.
Parking153
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To ensure that the vehicle is secured against
rolling away unintentionally:
Rthe electric parking brake must be applied.
Rthe transmission must be in positionPand
the transmission position display must
showP.
Rthe SmartKey must be removed from the
ignition lock.
Ron uphill or downhill gradients, the front
wheels must be turned towards the curb.
Switching off the engine
Important safety notes
GWARNING
The automatic transmission switches to
neutral positionNwhen 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 positionP. Prevent the parked
vehicle from rolling away by applying the
parking brake.
Vehicles with automatic transmission
All vehicles (except AMG vehicles)
XApply the electric parking brake.
XShift the transmission to positionP.
Selector lever in AMG vehicles
AMG vehicles:
XApply the electric parking brake.
XPressPbutton.
XTurn the SmartKey to position0in the
ignition lock and remove it.
The immobilizer is activated.
iIf you switch the engine off with the
transmission in positionRorD, the
automatic transmission shifts toN
automatically.
If you then open one of the front doors or
remove the SmartKey from the ignition, the
automatic transmission shifts toP.
If you shift the automatic transmission to
Nbefore switching off the engine, the
automatic transmission remains inNeven
if a door is opened.
iThe automatic transmission shifts toP
automatically if you:
Rswitch off the engine using the SmartKey
and remove the SmartKey from the
ignition lock or
Rswitch off the engine using the SmartKey
and open a front door.
If you attempt to turn off the engine when the
selector lever is not in positionP:
Ra message appears in the multifunction
display
Ra warning signal sounds
Electric parking brake
General notes
GWARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking positionP.
Rstart the engine.
154Parking
Driving and parking

In addition, they may operate vehicle
equipment and become trapped.There is a
risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
iThe electric parking brake performs a
function test at regular intervals while the
engine is switched off. The sounds that can
be heard while this is occurring are normal.
Applying/releasing manually
Applying
XPush handle.
When the electric parking brake is applied,
the(USA only) or (Canada only)
red indicator lamp lights up in the
instrument cluster.
iThe electric parking brake can also be
applied when the SmartKey is removed.
Releasing
XPull handle.
The red(USA only) or (Canada
only) indicator lamp in the instrument
cluster goes out.
iYou can only release the electric parking
brake when the SmartKey is in position1
or2in the ignition lock.
Applying automatically
The electric parking brake is applied
automatically:
Rif DISTRONIC PLUS brings the vehicle to a
standstill or
Rif the HOLD function is keeping the vehicle
stationary or
Rif Active Parking Assist is holding the
vehicle at a standstill
In addition, at least one of the following
conditions must be fulfilled:
Rthe engine is switched off.
Rthe driver's door is open and the seat belt
is not fastened.
Rthere is a system malfunction.
Rthe power supply is insufficient.
Rthe vehicle is stationary for a lengthy
period.
The red(USA only) or (Canada
only) indicator lamp in the instrumentcluster
lights up.
iThe electric parking brake is not
automatically engaged if the engine is
switched off by the ECO start/stop
function.
Releasing automatically
Your vehicle's electric parking brake is
automatically released if all of the following
conditions are met:
Rthe engine is running.
Rthe transmission is in positionDorR.
Rthe seat belt has been fastened.
Ryou depress the accelerator pedal.
If the transmission is in positionR, the tailgate
must be closed.
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