engine Alfa Romeo MiTo 2016 Service Manual

START&STOP SYSTEM
(for versions/markets, where provided)
The Start&Stop system automatically stops the engine each time the car
is stationary and starts it again when the driver wants to move off.
In this way, the efficiency of the car is increased, by reducing
consumption, emissions of harmful gases and noise pollution.
OPERATING MODES
Engine stopping mode
With the car stopped, the engine stops with gearbox in neutral and
clutch pedal released.
NoteThe engine can only be stopped automatically over about 10
km/h, to prevent the engine from being repeatedly stopped when
driving at walking pace.
The
fig. 80 symbol appears on the display when the engine stops.
Restarting the engine
Press the clutch pedal to restart the engine.
SYSTEM MANUAL ACTIVATION/
DEACTIVATION
To activate/deactivate manually the system, press thefig. 81 button
on the trim next to the steering wheel.
Start&Stop system activation
A message and a symbol will be displayed when the Start&Stop
system is activated.
Turning the Start&Stop off
❒Versions with multifunction display:a message is displayed when the
Start&Stop system is deactivated.
❒Versions with reconfigurable multifunction display:the
symbol is
displayed + a message when the Start&Stop system is deactivated.
fig. 80A0J0279fig. 81A0J0307
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When the system is deactivated, thewarning light on the instrument
panel switches on. For versions/markets where provided, a message
and symbol are also displayed in the event of system activation/
deactivation.

ENGINE STOPPING FAILURE
CONDITIONS
When the system is operating, due to comfort, emission control and
safety reasons, the engine does not stop in some conditions, among
which:
❒engine still cold;
❒especially cold outside temperature;
❒battery not sufficiently charged;
❒particulate filter regeneration (DPF) in progress (diesel engines only);
❒driver's door not shut;
❒driver's seat belt not fastened;
❒reverse gear engaged (for example, for parking manoeuvres);
❒for versions equipped with dual zone automatic climate control (for
versions/markets, where provided), if an adequate level of thermal
comfort has not been reached or with MAX-DEF function activation;
❒during the first period of use, to initialise the system.
If the climate comfort is to be favoured, the Start&Stop
system can be deactivated, for a continuous operation of
the climate control system.
ENGINE RESTARTING CONDITIONS
Due to comfort, emission control and safety reasons, the engine can
restart automatically without any action by the driver, under special
conditions, such as:
❒battery not sufficiently charged;
❒reduced braking system vacuum (e.g. if the brake pedal is pressed
repeatedly);
❒car moving (e.g. when driving on roads with a gradient);
❒engine stopping by Start&Stop system for over 3 minutes;
❒for versions equipped with dual zone automatic climate control
system (for versions/markets, where provided), if an adequate level
of thermal comfort has not been reached or MAX-DEF function
activation.
With gear engaged, automatic engine restarting is possible only by
fully depressing the clutch pedal. The driver is informed by the
displaying of a message on the display and - for versions/markets,
where provided - by the flashing of the symbol
.
Notes
If the clutch is not pressed, about 3 minutes after the engine stops, the
engine can be restarted only using the ignition key.
In cases when the engine stops and this is not desired, due for example
to the clutch pedal being released sharply with a gear engaged, if the
Start&Stop system is activated, the engine can be restarted by fully
depressing the clutch pedal or by placing the gear lever in neutral.
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SAFETY FUNCTIONS
When the engine is stopped by the Start&Stop system, if the driver
releases his/her seat belt and opens the driver's or passenger's door,
the engine can be restarted only using the ignition key.
The driver is informed by a buzzer and by the flashing of the symbol
on the display; on some versions, a message is displayed as well.
"ENERGY SAVING" FUNCTION
(for versions/markets, where provided)
If, following automatic engine restarting, the driver does not carry out
any action on the car for over 3 minutes, the Start&Stop system stops
the engine once and for all, to prevent fuel consumption. In these
cases, the engine can be restarted only using the ignition key.
NOTE In any case, it is possible to keep the engine running by
deactivating the Start&Stop system.
IRREGULAR OPERATION
In the event of malfunction, the Start&Stop system is deactivated.
The driver is informed of the fault by the
warning light switching
on in the instrument panel and, for versions/markets where provided,
a message and symbol on the display.
In this case, contact Alfa Romeo Authorized Services.
CAR INACTIVITY
In the event of car inactivity (or if the battery is replaced), special
attention must be paid to the disconnection of the battery power
supply.
The procedure must be carried out as follows: press button A fig. 82 to
detach connector B from battery status monitoring sensor C (this is
located on the negative pole of the battery itself).
In case of battery replacement, always contact Alfa
Romeo Authorized Services. Replace the battery with
one of the same type (HEAVY DUTY) and with the same
specifications.
IMPORTANT After turning the ignition key to STOP, wait at least 1
minute before disconnecting the electrical supply to the battery.
fig. 82A0J0379
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JUMP STARTING
When jump starting, never connect the negative lead (–) of the
auxiliary battery to the negative pole A fig. 83 of the car battery, but
rather to an engine/gearbox earth point.
Before opening the bonnet, make sure the engine is off and
the ignition key is in the STOP position. Follow the
indications on the plate underneath the bonnet fig. 84. It is
advisable to extract the key when there are other people in the car.
Leave the car only after having removed the ignition key or having
turned it to STOP. During refuelling, make sure that the engine is off
and that the ignition key is in the STOP position.
DYNAMIC SUSPENSION
(active shock absorber system)
(for versions/markets, where provided)
This system interacts with the “Alfa DNA” system (see paragraph “Alfa
DNA”).
The “Alfa DNA” system lever allows you to choose three different
driving settings depending on the route type and on the road surface:
❒d = Dynamic (sports driving mode);
❒n = Natural (mode for driving in normal conditions);
❒a = All Weather (mode for driving in poor grip conditions, such as
rain and snow).
fig. 83A0J0388fig. 84A0J0341
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In “Natural” and “All Weather” operating mode, the active shock
absorbers adjust the car suspension to suit the route type and
the driving stresses, thus considerably improving driving comfort in
particular on rough terrain.
The "Dynamic" operating mode produces a sports driving setting
characterised by more responsive acceleration and greater effort on
the steering wheel to give a sporty feeling. The shock absorber
damping action is also adjusted and divided, to guarantee higher
precision and reactivity of the car, while maintaining a good comfort
level.
The car is more precise when entering bends and quicker in changing
direction.EOBD SYSTEM
(European On Board Diagnosis)
(for versions/markets, where provided)
The aim of the EOBD system (European On Board Diagnosis) is to:
❒monitor the system efficiency;
❒indicate an increase in emissions;
❒indicate the need to replace damaged components.
The car also has a diagnostic connector that can be interfaced with
appropriate tools, which makes it possible to read the error codes
stored in the electronic control units together with a series of specific
parameters for engine operation and diagnosis. This check can also be
carried out by the traffic police.
IMPORTANT After eliminating a fault, to check the system completely,
Alfa Romeo Authorised Services are obliged to run tests and, if
necessary, road tests which may also call for a long journey.
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ELECTRIC POWER STEERING
This only operates with the key turned to MAR-ON and the engine
started. Power steering allows the force required at the steering wheel
to be adapted to driving conditions.
The different power assistance modes can be selected via the "d,n,a"
positions of the “Alfa DNA System” lever (see “Alfa DNA System”
paragraph).
It is absolutely forbidden to carry out any after-market
operation involving steering system or steering column
modifications (e.g.: installation of anti-theft device)
that could badly affect performance and safety, invalidate the
warranty and also result in non-compliance of the car with
type-approval requirements.
Before performing any maintenance operations,
always turn off the engine and remove the key from
the ignition to lock the steering column, especially
when the car’s wheels are not touching the ground.
INSTALLING ELECTRICAL/
ELECTRONIC DEVICES
Electrical and electronic devices installed after buying the car in the
context of after-sales service must carry the following label: fig. 85
Fiat Group Automobiles S.p.A. authorises the installation of transceiver
devices on condition that such installations are carried out in a
workmanlike fashion, following the manufacturer’s instructions, at a
specialised centre.
IMPORTANT Traffic police may not allow the car on the road if devices
have been installed which modify the features of the car. This may
also cause invalidation of warranty in relation to faults caused by the
change either directly or indirectly related to it.
Fiat Group Automobiles S.p.A. shall not be liable for damage caused
by the installation of accessories either not supplied or recommended
by Fiat Group Automobiles S.p.A. and/or not installed in compliance
with the provided instructions.
fig. 85DISPOSITIVI-ELETTRONICI
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TPMS (Tyre Pressure
Monitoring System)
(for versions/markets, where provided)
The car may be fitted with a tyre pressure monitoring system (TPMS),
which informs the driver of the tyre inflation status via the "Check
tyre pressure" and "Low tyre pressure" messages on the display.
This system comprises a radio frequency transmitter fitted to each
wheel (on the wheel rim inside the tyre), which is able to send
information on the tyre inflation pressure of each wheel to the control
unit.
IMPORTANT INFORMATION ABOUT
THE TPMS
The fault indications are not stored and will therefore not be displayed
after the engine has been switched off and then on again.
If the fault conditions persist, the control unit will send the relative
indications to the instrument panel only after the car has been in
motion for a short time.
The presence of the TPMS does not permit the driver to
neglect regular checks of the tyre pressure, including
for the spare wheel.
Tyre pressure must be checked with tyres rested and
cold. Should it become necessary for whatever reason
to check pressure with warm tyres, do not reduce
pressure even though it is higher than the prescribed value, but
repeat the check when tyres are cold.
Should one or more wheels be fitted without sensors,
the system will no longer be available and a warning
message will be shown on the display, until 4 wheels
with sensors are fitted again.
The TPMS cannot warn of sudden decreases in tyre
pressure (for example when a tyre bursts). In this case,
stop the car, braking with caution and avoiding
abrupt steering.
Replacing standard tyres with winter tyres and vice
versa requires TPMS system adjustment that must only
be performed by Alfa Romeo Authorised Services.
Variations in outside temperature may cause tyre
pressures to vary. The TPMS may temporarily indicate
insufficient pressure. In this case, check the tyre
pressure when cold and, if necessary, restore the inflation values.
When a tyre is removed, it is advisable to replace the
rubber valve seal as well: contact Alfa Romeo
Authorised Services. Tyre and rim fitting/removal
operations require specific precautions; to avoid damaging or
fitting the sensors incorrectly, tyre and wheel fitting/removal
operations should only be carried out by specialised staff.
Contact Alfa Romeo Authorised Services.
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REFUELLING THE CAR
Stop the engine before refuelling.
PETROL ENGINES
Only use unleaded petrol. The petrol octane rating (RON) must not be
lower than 95. In order to prevent damage to the catalytic converter
never introduce even the smallest amount of leaded petrol, even in the
event of an emergency.
DIESEL ENGINES
Use only diesel fuel compliant with European specification EN590. The
use of other products or mixtures may damage the engine beyond
repair and consequently invalidate the warranty, due to the damage
caused.
Operation at low temperatures
If the outside temperature is very low, the diesel thickens due to the
formation of paraffin clots with consequent defective operation of the
fuel supply system.
In order to avoid these problems, different types of diesel fuel are
distributed according to the season: summer type, winter type and
arctic type (cold/mountain areas). If refuelling with diesel fuel whose
features are not suitable for the temperature of use, it is advisable
to mix TUTELA DIESEL ART additive with the fuel, in the proportions
shown on the container. Pour the additive into the tank before the fuel.
When using or parking the vehicle for a long time in the mountains
or cold areas, it is advisable to refuel using locally available fuel.
In this case, it is also advisable to keep the tank over 50% full.
FUEL TANK CAP
Opening
Open flap A fig. 88, pulling it outwards, hold cap B still, insert the
ignition key in the lock and turn it anticlockwise. Then turn the cap
anticlockwise and remove it.
The plug is provided with a loss prevention device C which secures it to
the flap, so it cannot be lost. Attach the cap to device D during
refuelling.
Closure
Fit the cap (complete with key) and turn it clockwise until it clicks once
or more. Then turn the key clockwise and extract it, then close the flap.
The sealing may cause a slight pressure increase in the tank. A little
breathing off, while slackening the cap is absolutely normal.
Do not place naked flames or lit cigarettes near to the
fuel filler: fire risk. Also, keep your face away from
this fuel inlet to avoid inhaling harmful fumes.
fig. 88A0J0327
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PROTECTING THE ENVIRONMENT
The following devices are used for reducing petrol fuel engine
emissions: catalytic converter, oxygen sensors and evaporation control
system
The following devices are used for reducing diesel fuel engine
emissions: oxidising catalytic converter, exhaust gas recirculation
system (EGR) and particulate filter (DPF).
DIESEL PARTICULATE FILTER (DPF)
(Diesel Particulate Filter)
(for versions/markets, where provided)
The Diesel Particulate Filter is a mechanical filter, integral to the
exhaust system, that physically traps carbon particles present in the
exhaust gases of diesel engines.
The diesel particulate filter is needed to eliminate almost all carbon
particle emissions in compliance with current/future regulations and
standards.
During standard use of the vehicle, the engine control unit records a set
of data (e.g.: travel time, type of route, temperatures, etc.) and it will
then calculate how much particulate has been trapped by the filter.Since this filter physically traps particulate, it should be periodically
regenerated (cleaned) at regular intervals by burning carbon particles.
The regeneration procedure is controlled automatically by the engine
management control unit according to the filter conditions and vehicle
use conditions.
During the regeneration there may be a limited increase in the engine
idle speed, fan activation, a limited increase in fumes and high
temperatures at the exhaust.
These are not faults; they do not impair normal car performance or
damage the environment. If the dedicated message is displayed, see
contents of "Warning lights and messages" paragraph.
The catalytic converter and particulate filter (DPF) reach
very high temperatures during operation. Therefore
do not park the car on flammable materials (grass, dry
leaves, pine needles, etc.): fire hazard.
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NOTE On versions equipped with sports front seats, the passenger side
seat belt fastened indication (warning light 1 for RHD versions or
warning light 5 for LHD versions) will never be displayed.
FRONT SEATS (warning light no. 1 =
driver and no. 5 = passenger)
Driver
If the driver is the only occupant and their seat belt is not fastened,
when 20 km/h is exceeded or when travelling at a speed between 10
and 20 km/h for longer than 5 seconds, an acoustic signal cycle
will be started for the front seats (continuous acoustic signal for
6 seconds followed by a 90 second beep). The warning light will flash.
The warning lights will stay on constantly at the end of the cycle until
the engine is stopped. The acoustic signal will be interrupted
immediately when the driver’s seat belt is fastened and the warning
light will turn green.
The reminder cycle (acoustic and visual) will be repeated as described
above and the red warning light will flash if the seat belt is unfastened
again while travelling.
Passenger
A similar situation applies to the front passenger, with the difference
that the warning light turns green and the indication is also interrupted
when the passenger leaves the car.
If both front seat belts are unfastened a few seconds apart while the
car is travelling, the acoustic signal will refer to the most recent event
and the two warning lights will proceed with the visual indication
independently.
REAR SEATS (warning light no. 2, no.
3 and no. 4)
For the rear seats, the reminder cycle is only activated when any seat
belt is unfastened (flashing red).
In this condition, the warning light for the seat belt which has been
unfastened will flash (red) for approximately 30 seconds. An acoustic
signal is also emitted.
The visual indication (flashing red) will start and stop independently for
each warning light if several seat belts are unfastened. The warning
light will become green when the relevant seat belt is fastened again.
The rear seat warning lights will switch off, regardless of the state
of the belt (red or green) approximately 30 seconds after the last
signal.
IMPORTANT
The warning lights are all off if all seat belts (front and rear) are
already fastened when the ignition key is turned to MAR.
All warning lights switch on when at least one belt changes from
fastened to unfastened or vice versa.
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