2014 Seat Mii technical specifications

Checking and refilling levels
parts of the engine. Before any work, re-
move ties and jewellery (necklaces, etc),
tie long hair back and tie all items of
loose clothing to your body to make sure
that they cannot be trapped by engine
components.
– Take extreme caution when operating the
accelerator and remain attentive. The ve-
hicle could move, even if the handbrake
is applied.
● Always make sure you have not left any ob-
jects, such as cleaning cloths and tools, in
the engine compartment. If any object is left
in the engine compartment, this could cause
malfunctions, engine faults and even a fire. WARNING
Refill liquids and certain materials can catch
fire easily in the engine compartment, caus-
ing a fire and serious injury!
● Never smoke.
● Never work close to places exposed to
flames or sparks.
● Never pour service fluids over the engine.
These fluid may ignite hot engine parts and
cause injuries.
● If it is necessary to work on the fuel system
or the electrical system, please follow the in-
structions below:
–Always disconnect the vehicle battery.
– Never work close to heaters, heat sources
or places exposed to flames or sparks. ●
Always keep a recently serviced and per-
fectly working fire extinguisher close by.
● Never cover the engine with additional in-
sulating materials such as a blanket. Risk of
fire! CAUTION
When refilling or changing service liquids,
ensure that you put the liquids into the right
tank. Making a mistake when refilling could
cause serious malfunctions and damage the
engine! For the sake of the environment
Service fluids leaks are harmful to the envi-
ronment. For this reason you should make
regular checks on the ground underneath
your vehicle. Take the vehicle to a specialised
workshop to be checked if you see stains, oil
or other fluids on the ground. Collect any
spilt service fluids and allow a professional to
dispose of them. Opening and closing the bonnet
Fig. 105
A: Release lever in the footwell on
the driver side B: Release lever on the bonnet » 145Technical specifications
Advice
Operation
Safety

Checking and refilling levels
●
Never store engine oil in empty food con-
tainers or bottles as other people may acci-
dentally drink it.
● Regular contact with engine oil can be bad
for the skin. If you come into contact with en-
gine oil, wash your skin with soap and water.
● With the engine running, the engine oil
gets extremely hot and can cause severe skin
burns. Always wait until the engine has fully
cooled. For the sake of the environment
Similar to the other service liquids, spilled
engine oil can be bad for the environment.
Collect these liquids in suitable containers
and dispose of them while respecting the en-
vironment. Warning and control lampsFlashesPossible
causeSolution

Engine oil
pressure too
low. 
Stop the vehicle!
Switch off the engine. Check
the engine oil level, and if
necessary, refill with
››› page 148.
engine oil - If the warning in-
dicator flashes although the
oil level is correct, do not
continue driving or leave the
engine running. Otherwise,
the engine could be dam-
aged. Seek specialist assis-
tance. WARNING
Observe the safety warnings ››› in Control
and warning lamps on page 40. Engine oil specifications
Replacement engine oil must strictly comply
with the specifications.
The correct oil must be used to ensure the
correct operation and long service life of the
engine. The engine comes with a high-quality
multigrade oil that can generally be used all
year round.Only use an engine oil that complies to SEAT
standards whenever possible
››› . Only refill
engine oil using approved engine oil in ac-
cordance with the corresponding VW stand-
ard ( ››› table on page 147 ). All oils indicated
ar e synthetic multigrade oils .
Engine oils are being continuously further
developed. Technical services are constantly
updated with any modifications. SEAT there-
fore recommends that you have the engine
oil changed by a technical service.
Engines
Specifications of en- gine oil with a serv- ice dependent on
time/distance travel- led
44 kW - 55 kW Petrol en-ginesVW 504 00, VW 502 00
Natural gas engineVW 502 00 CAUTION
● Only use engine oils whose specifications
are expressly approved by SEAT. The use of
any other type of oil could cause engine dam-
age!
● No additives should be used with engine
oil. Any damage caused by the use of such
additives would not be covered by the factory
warranty. 147
Technical specifications
Advice
Operation
Safety

Checking and refilling levels
This will avoid engine oil spilling onto hot
engine parts when the engine is running.
CAUTION
● If the engine oil level is above the area Ado not start the engine. Seek specialist assis-
tance. Otherwise catalytic converter and en-
gine damage may occur.
● When refilling or changing service liquids,
ensure that you put the liquids into the right
tank. Making a mistake when refilling could
cause serious malfunctions and damage the
engine! For the sake of the environment
The oil level must never be above area A .
Otherwise oil can be drawn in through the
crankcase breather and escape into the at-
mosphere via the exhaust system. Engine oil consumption
The consumption of engine oil can be differ-
ent from one engine to another and can vary
during the useful life of the engine.
Depending on how you drive and the condi-
tions in which the vehicle is used, oil con-
sumption can be up to 1 ltr./2000 km. In the
case of new vehicles, the consumption can
exceed this figure over 5,000 kilometres. For
this reason the engine oil level must be checked at regular intervals, preferably when
filling the tank and before a journey.
When the engine is working hard, for in-
stance during sustained high-speed motor-
way cruising in summer or when climbing
mountain passes, the oil level should pref-
erably be kept within area
››› Fig. 107 A .
Changing the engine oil The engine oil must be changed regularly ac-
cording to the specifications of the Mainte-
nance Programme.
Due to the problems linked with disposing of
used oil and the need for suitable tools and
special knowledge, always visit a specialised
workshop to have the engine oil and filter
changed. SEAT recommends taking your car
in for technical service.
Detailed information on the service intervals
is shown in the Maintenance Programme.
Engine oil additives make new oil darker after
the engine has been running for a short peri-
od. This is normal and does not mean more
frequent oil changes are required.
WARNING
If, in exceptional circumstances, you must
change the engine oil yourself, please note
the following: ●
Wear eye protection.
● Always wait until the engine has complete-
ly cooled to avoid being burned.
● Always keep your arms horizontal when un-
screwing the oil drainage bolt so that it does
not run down your arms.
● Use a suitable container large enough to
collect all of the used oil in the engine.
● Never collect engine oil in empty food con-
tainers, cans, bottles or other containers as
not all people are able to identify engine oil.
● Oil is toxic and must be kept out of the
reach of children. For the sake of the environment
Before changing the engine oil, find a suita-
ble location or service for proper disposal. For the sake of the environment
Always dispose of engine oil with the utmost
respect for the environment. Never dispose of
used engine oil in places such as a garden,
woods, drains, roads, paths, rivers and drain-
age systems. 149Technical specifications
Advice
Operation
Safety

Checking and refilling levels
reduce the frost protection and, in turn, de-
crease the cooling capacity.
When the coolant is topped up, use a mixture
of distilled water and, at least, 40 % of the G
13 or G 12 p lu
s-plus (TL-VW 774 G) additive
(both are purple) to obtain an optimum anti-
corrosion protection ››› . The mixture of G
13 with G 12 plus (TL-VW 774 F), G 12 (red) or
G 11 (green-blue) engine coolants will signifi-
cantly reduce the anticorrosion protection
and should, therefore be avoided ››› .
WARNING
If there is not enough anti-freeze in the cool-
ant system, the engine may fail leading to se-
rious damage.
● Please make sure that the percentage of
additive is correct with respect to the lowest
expected ambient temperature in the zone in
which the vehicle is to be used.
● When the outside temperature is very low,
the coolant could freeze and the vehicle
would be immobilised. In this case, the heat-
ing would not work either and inadequately
dressed passengers could die of cold. CAUTION
The original additives should never be mixed
with coolants which are not approved by
SEAT. Otherwise, you run the risk of causing
severe damage to the engine and the engine
cooling system. ●
If the fluid in the expansion tank is not pur-
ple but is, for example, brown, this indicates
that the G 13 additive has been mixed with
an inadequate coolant. The coolant must be
changed as soon as possible if this is the
case! This could result in serious faults and
engine damage. For the sake of the environment
Coolants and additives can contaminate the
environment. If any fluids are spilled, they
should be collected and correctly disposed
of, with respect to the environment. Checking the engine coolant level and
refilling
Fig. 109
In the engine compartment: Marking
on coolant expansion tank Fig. 110
In the engine compartment: Coolant
expansion tank cap If the coolant level is low, the coolant warn-
ing indicator will light.
Preparations
● Park the vehicle on even, flat and firm
ground.
● Allow the engine to cool ››› .
● Open the bonnet  ››› page 143.
● The coolant expansion tank is easily recog-
nisable because of the symbol  on the cap
››› Fig. 110 .
Chec k

ing the engine coolant level
● When the engine is cold, check the coolant
level using the side marking on the expan-
sion tank ››› Fig. 109.
● If the l

evel is below the “MIN” mark, top up
with coolant. When the engine is hot it may
be slightly above the marked area. »
151
Technical specifications
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Checking and refilling levels
In the course of time, the brake fluid absorbs
water from the ambient air. If there is too
much water in the brake fluid, the brake sys-
tem could be damaged. In addition, the boil-
ing point of the brake fluid is significantly
lowered. When the brake fluid contains too
much water and the brakes are subject to
considerable forces, bubbles of water vapour
can form in the system. These bubbles can
significantly reduce braking power, notably
increasing braking distance, and could even
result in the total failure of the brake system.
Ensuring that the brake system is always
functioning correctly is essential for your own
safety and the safety of other road users
››› .
Brake fluid specifications
SEAT have developed a special brake fluid
optimised for the brake systems of their vehi-
cles. To ensure the optimum working of the
brake system, SEAT recommends the use of
brake fluid in accordance with the VW 501 14
standard . If this brake fluid is not available or
another br ak
e fluid is used for different rea-
sons, use a brake fluid that complies with the
United States standard FMVSS 116 DOT 4 or
the German standard DIN ISO 4925 CLASS 4
››› .
Brake fluids conforming to the standard
VW 501 14, fulfil the American requirements
of the FMVSS 116 DOT 4 standard and the
German DIN ISO 4925 CLASS 4 standard. However, fluids that comply with the Ameri-
can FMVSS 116 DOT 4 standard or the Ger-
man DIN ISO 4925 CLASS 4 standard do not
necessarily comply with the VW 501 14
standard. Always check the information on
the brake fluid container and ensure that you
are using suitable brake fluid.
A suitable brake fluid can be obtained from
SEAT dealerships.
Brake fluid level
The level of the brake fluid should always be
between the MIN and MAX marks, or above
the MIN mark
››› .
It is not always possible to check the level of
the brake fluid, as in some models the en-
gine components make it difficult to see the
brake fluid reservoir. If you cannot read the
exact brake fluid level, consult a specialist.
The brake fluid level drops slightly when the
vehicle is being used due to wear of the
brake pads and the automatic readjustment
of the brake.
Changing the brake fluid
The brake fluid should be changed in accord-
ance with the instructions given in the Main-
tenance Programme. Have the brake fluid
changed by a specialised workshop. SEAT
recommends taking your car in for technical
service. This means that only brake fluid complying with the required specifications
will be used. WARNING
If the brake fluid level is low or unsuita-
ble/old brake fluid is used, the brake system
may fail or braking power may be reduced.
● Check the brake system and the brake fluid
level regularly!
● The brake fluid should be changed regular-
ly in accordance with the instructions given
in the Maintenance Programme.
● When the brake fluid is used and brakes
are subjected to extreme braking forces, bub-
bles of vapour form in the brake system.
These bubbles can significantly reduce brak-
ing power, notably increasing braking dis-
tance, and could result in the total failure of
the brake system.
● Always ensure that you use suitable brake
fluid. Only used brake fluid that conforms to
the VW 501 14 standard, FMVSS 116 DOT 4
standard or even the DIN ISO 4925 CLASS 4
standard. Other types of brake fluid could af-
fect brake operation and reduce braking pow-
er. Do not use a brake fluid if the container
does not specify compliance with the
VW 501 14, FMVSS 116 DOT 4 or
DIN ISO 4925 CLASS 4 standards.
● The replacement brake fluid must be new. WARNING
Brake fluid is poisonous. » 153
Technical specifications
Advice
Operation
Safety

Checking and refilling levels
Never work on the electrical system without
fully understanding the operations required,
the applicable safety standards and without
the correct tools ››› ! If required, have any
work carried out by a specialised workshop.
SEAT recommends taking your car in for tech-
nical service. Negligent work can cause seri-
ous injury.
Location of the vehicle battery
The battery is located in the engine compart-
ment.
Explanation of the warning indications on
the vehicle's batterySymbolMeaning 
Wear eye protection!

Battery acid is very corrosive and caustic.
Always wear protective gloves and eye
protection!

Fires, sparks, open flames and smoking
are prohibited.

A highly explosive mixture of gases is re-
leased when the battery is under charge.

Keep children away from acid and batter-
ies!
WARNING
Working on the vehicle battery and the elec-
trical system can cause corrosion, fire and electric shocks. Always read and take into ac-
count the following warnings and safety
standards before carrying out any work:
●
Before working on the battery, switch off
the engine, the ignition and all electrical de-
vices then disconnect the negative connec-
tion on the battery.
● Keep children away from acid and the bat-
tery itself!
● Wear eye protection.
● Battery acid is very corrosive and caustic. It
can burn skin and cause blindness. When
handling the battery, protect yourself from
splashes of acids, above all your hands, arms
and face.
● Do not smoke and never work close to pla-
ces exposed to flames or sparks.
● Avoid sparks and electrostatic discharges
when working with cables and electrical devi-
ces.
● Never short the battery terminals.
● Never use a damaged battery. It can ex-
plode. Replace a damaged battery immedi-
ately.
● Replaced damaged or frozen batteries as
soon as possible. A flat battery can also
freeze at temperatures close to 0 °C (+32 °F). CAUTION
● Never disconnect the battery if the ignition
is switched on or if the engine is running. This could damage the electrical system or
electronic components.
● Do not expose the battery to direct sunlight
over a long period of time, as the intense ul-
traviolet radiation can damage the battery
housing.
● If the car is left standing for long periods,
protect the battery from extreme cold temper-
ature so that it does not “freeze up” and be-
come damaged. Warning lamp
It
lights upPossible
causeSolution 
Faulty generator.
Contact a specialised
workshop. Have the elec-
trical system checked.
Disconnect any unneces-
sary electrical devices.
The generator does not
charge the battery while
the vehicle is in motion.
Several warning and control lamps light up
for a few seconds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds.
»
155
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Checking and refilling levels
recommends you have the battery replaced
by a technical service.
Use only maintenance-free genuine batteries
conforming to TL 825 06 and VW 7 50 73
Standards. These standards must be dated
April 2008 or later.
Vehicles fitted with the Start-Stop system are
equipped with a special battery. Therefore,
this battery must only be replaced by another
with the same specifications.
Disconnecting the vehicle's battery
If you must disconnect the battery from the
electrical system, please note the following:
● Switch off the ignition and all electrical
equipment.
● The vehicle must be unlocked before dis-
connecting the battery, otherwise the alarm
will be triggered.
● First disconnect the negative cable and
then the positive ››› .
Connecting the vehicle's battery
● Before reconnecting the battery, switch off
the engine and all electrical devices.
● First reconnect the positive cable and then
the negative ››› .
Different control lamps may light up after
connecting the battery and switching the ig-
nition on. They will be turned off after a short trip at a speed of between 15-20 km/h
(10-12 mph). If the warning indicators remain
lit, please visit a specialised workshop to
have the vehicle checked.
If the battery has been disconnected for a
long time, it is possible that the next service
date is not displayed or calculated correctly
››› page 36 . Respect the maximum service in-
t er
vals permitted ››› Booklet Maintenance
Programme.
Autom

atic device disconnection
The intelligent vehicle electrical system auto-
matically implements a range of measures to
prevent the battery from discharging when
high demands are made on it:
● The idling speed is increased so that the al-
ternator provides more electricity.
● Where necessary, the power to the most
powerful devices is reduced or even com-
pletely disconnected.
● On starting the engine, the power supply
from the 12-volt power sockets and the ciga-
rette lighter may be interrupted for a short
time.
The on-board management program cannot
always prevent the battery from running flat.
For example, if the ignition is left on for a
long period with the engine off or if the side
lights or parking lights are left on while the
vehicle is stationary. Why the battery runs flat:
●
When stationary for a long time without
starting the engine, particularly if the ignition
is switched on.
● Use of electrical devices with the engine
switched off. WARNING
Incorrectly securing the battery or using the
wrong battery can cause short-circuits, fire
and serious injuries.
● Always use only maintenance-free batter-
ies, protected to prevent a leak, and whose
properties, specifications and size corre-
spond to the standard battery. WARNING
A highly explosive mixture of gases is re-
leased when the battery is under charge.
● The batteries should be charged in a well-
ventilated room only.
● Never charge a frozen or recently thawed
battery. A flat battery can also freeze at tem-
peratures close to 0 °C (+32 °F).
● Always replace a battery which has frozen.
● Battery cables not correctly connected may
cause a short circuit. Reconnect first the posi-
tive cable and then the negative cable. » 157
Technical specifications
Advice
Operation
Safety

Wheels and tyres
Note
For technical reasons, it is not generally pos-
sible to use the wheels from other vehicles.
In some cases, this may also be true for the
same model of wheel. Please refer to the ve-
hicle documentation or ask at a technical
service. About your tyres and wheels
Fig. 114
Diagram for changing wheels The tyres of a vehicle are the components
which are subjected to most stress and are
the most underestimated. Tyres are very im-
portant, as the support offered by their nar-
row surface is the only point of contact be-
tween the vehicle and the road.
The service life of tyres is dependent on tyre
pressure, driving style, the care they receive
and the correct fitting. The tyres and wheel rims are an essential
part of the vehicle's design. The tyres and
rims approved by SEAT are specially matched
to the characteristics of the vehicle and our
critical to good road holding and safe han-
dling.
Avoiding damage to tyres and wheels
● If you have to drive over a kerb or similar
obstacle, drive very slowly and as near as
possible at a right angle to the kerb.
● Inspect the tyres regularly for damage
(punctures, cuts, cracks, dents).
● Remove any foreign bodies found on the
outside of the tyre tread and ensure that they
have not passed through the wall of the tyre
››› page 163 .
● In a d
dition, the instructions for tyre control
systems should always be observed.
● Replace damaged or worn tyres as soon as
possible ››› page 163.
● Re

gularly check tyres for non-visible dam-
age ››› page 163
.
● Never exceed the maximum permitted
speed or loads specified for the type of tyre
fitted on your vehicle ››› page 167.
● Do not allow tyres (including the spare
wheel) to come into contact with aggressive
substances, grease, oil, fuel or brake fluid
››› .●
Lost valve caps should be replaced imme-
diately.
Tyres with directional tread pattern
Tyres with directional tread pattern have
been designed to operate best when rotating
in only one direction. An arrow on the tyre
sidewall indicates the direction of rotation on
tyres with directional tread ››› page 167. Al-
ways observe the direction of rotation indica-
ted when mounting the wheel. This guaran-
tees optimum grip and helps to avoid aqua-
planing, excessive noise and wear.
If the tyre is mounted in the opposite direc-
tion of rotation, drive with extreme caution,
as the tyre is no longer being used correctly.
This is of particular importance when the
road surface is wet. Change the tyre as soon
as possible or remount it with the correct di-
rection of rotation.
Interchanging tyres
To ensure that the wear is equal on all tyres
the wheels should be changed round from
time to time according to the system
››› Fig. 114 . The useful life of all the tyres will
then be about the s

ame time.
SEAT recommends you take the vehicle to a
specialised workshop to have the tyres
changed. »
159
Technical specifications
Advice
Operation
Safety