2017 Seat Mii maintenance

Checking and refilling levels
●
Natur a
l gas tanks have a limited service
life. Have the natural gas tanks replaced
when required. You can obtain further infor-
mation about this at SEAT dealers or special-
ised workshops. WARNING
If the vehicle underbody touches the ground
or in the ev ent of

a rear collision, there could
be damage to the natural gas tanks.
● Check whether there is a smell of gas.
● If you notice a smell of gas, take the vehicle
to a spec
ialised workshop immediately and
have the natural gas system checked. Note
Have the natural gas system checked regular-
ly b y

a specialised workshop, according to
the Maintenance Programme. Filling the tank
Intr oduction The fuel tank flap is on the rear right of the
v
ehic
l

e. WARNING
Refuelling or handling fuel carelessly can
cau se an e

xplosion or fire resulting in serious
burns and injuries.
● Always make sure that you correctly close
the fuel c
ap to avoid evaporation and fuel
spillage.
● Fuels are highly explosive and inflammable
subs
tances that can cause serious burns and
injuries.
● Fuel could leak out or be spilt if the engine
is not
switched off or if the filler fuel nozzle is
not fully inserted into the tank filler neck
when refuelling. This could lead to a fire, ex-
plosion and severe injuries.
● When refuelling, turn off the engine and
turn off the ignition f
or safety reasons.
● Always turn off mobile telephones, radio
appar
atus and other radio wave emitting
equipment before refuelling. Electromagnetic
waves could cause sparks and lead to a fire.
● Never enter the vehicle while refuelling. If it
is ab
solutely necessary to enter, close the
door and touch a metal surface before touch-
ing the filler nozzle again. This will prevent
the generation of static electricity. Sparks
could cause a fire when refuelling.
● Never handle fuel close to flames, sparks or
obj
ects with slow combustion (e.g. ciga-
rettes).
● Avoid static electricity and electro-magnet-
ic ra
diation when refuelling. ●
Ob ser

ve the safety regulations of the serv-
ice station.
● Never spill fuel on the vehicle or in the lug-
gage c
ompartment. WARNING
For safety reasons, SEAT does not recommend
c arr y

ing a spare fuel canister in the vehicle.
Fuel could be spilled and catch fire, above all
in case of an accident and this applies to a
full container as well as empty containers.
This could lead to explosions, fires and inju-
ries.
● Observe the following if you exceptionally
have t
o carry fuel in a canister:
– Never place a fuel container, to fill it, in-
side the vehicle or on the vehicle, for ex-
ample, in the luggage compartment. Fill-
ing in these circumstances could create
an electrostatic charge and spark that
could ignite fuel fumes.
– Always place the canister on the ground
to fill it.
– Insert the fuel nozzle into the neck of the
canister as far as possible.
– If you are using a metal fuel canister, the
nozzle must always touch the canister
while it is being filled to avoid static elec-
tricity.
– Follow the legal requirements for the use,
storage and transport of spare fuel canis-
ters. » 183
Technical data
Advice
Operation
Emergencies
Safety

Checking and refilling levels
This will avoid engine oil spilling onto hot en-
gine par
t
s when the engine is running. CAUTION
● If the en gine oi

l level is above the area
››› Fig. 168 A do not start the engine. Seek
spec i
alist assistance. Otherwise catalytic
converter and engine damage may occur.
● When refilling or changing service liquids,
ensur
e 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 .
Otherw i

se 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
fr
om one en

gine 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
fillin

g 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. 168 A .
Topping up engine oil Read the additional information carefully
›› ›

 page 31.
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
Only change the engine oil yourself if you
hav e the s

pecialist knowledge required!
● Before opening the bonnet, read and ob-
serve the w
arnings ››› page 187.
● Wait for the engine to cool down. Hot oil
may
cause burn injuries.
● Wear eye protection to avoid injuries, such
as ac
id burns, caused by splashes of oil.
● When removing the oil drain plug with your
finger
s, keep your arm horizontal to help pre-
vent oil from running down your arm.
● Wash your skin thoroughly if it comes into
contact
with engine oil.
● Engine oil is poisonous! Used oil must be
stor
ed in a safe place out of the reach of chil-
dren. CAUTION
No additives should be used with engine oil.
This c

ould result in engine damage. Any dam-
age caused by the use of such additives
would not be covered by the factory warranty. For the sake of the environment
Before changing the engine oil, find a suita-
bl e loc

ation or service for proper disposal. For the sake of the environment
Always dispose of engine oil with the utmost
re s

pect for the environment. Never dispose of » 191
Technical data
Advice
Operation
Emergencies
Safety

Checking and refilling levels
the German standard DIN ISO 4925 CLASS 4
› ›
›
.
Br ak
e fluid
s 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 i
s

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 shou

ld 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-
bl e/o

ld 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 acc
ordance with the instructions given
in the Maintenance Programme.
● Always ensure that you use suitable brake
fluid. Only u
sed 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.
● Brake fluid should be stored in the closed
original
container in a safe place out of reach
of children. Risk of poisoning! ●
If the br ak

e fluid is left in the system for
too long and the brakes are subjected to
heavy use, vapour bubbles may form in the
brake system. This would seriously affect the
efficiency of the brakes and the safety of the
vehicle. This may cause an accident. CAUTION
Brake fluid damages the vehicle paintwork.
W ipe off an

y brake fluid from the paintwork
immediately. For the sake of the environment
Brake fluid is an environmental pollutant.
Co l

lect any spilt service fluids and allow a
professional to dispose of them. Windscreen washer reservoir
Chec k
in

g and topping up the wind-
screen washer reservoir with water Read the additional information carefully
› ›
›

 page 33
Check the water level in the windscreen
washer reservoir regularly and top up as re-
quired.
● Open the bonnet  ›››

page 187.
● The washer reservoir is marked with the
symbol 

on the lid. »
195
Technical data
Advice
Operation
Emergencies
Safety

Checking and refilling levels
●
Keep c hi
ldren away from acid and the bat-
tery itself!
● Wear eye protection.
● Battery acid is very corrosive and caustic. It
can burn sk
in 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 workin
g with cables and electrical devi-
ces.
● Never short the battery terminals.
● Never use a damaged battery. It can ex-
plode. Rep
lace a damaged battery immedi-
ately.
● Replaced damaged or frozen batteries as
soon as po
ssible. A flat battery can also
freeze at temperatures close to 0°C (+32°F). CAUTION
● Never di s

connect 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 lon
g 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 d
am

aged. Warning lamp

It lights up
Faulty generator.
Contact a specialised workshop.
Have the electrical system checked.
Disconnect any unnecessary elec-
trical devices. The generator does
not charge the battery while the ve-
hicle is in motion.
Several warning and control lamps light up
f
or a f
ew sec

onds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds. WARNING
Observe the safety warnings ›››
in On the
ins trument
panel on page 26. Checking the electrolyte level of the
v
ehic
l

e battery Fig. 172
In the engine compartment: Remove
the c o
v

er from the vehicle's battery. The battery's electrolyte level should be
c
hec
k

ed regularly in high-mileage vehicles,
in hot countries and in older batteries. Other
batteries do not require maintenance.
Vehicles fitted with the Start-Stop system are
equipped with special batteries. For technical
reasons, the electrolyte level cannot be
checked in these batteries.
Preparations
● Prepare the vehicle for work in the engine
compar
tment ››› page 187
● Open the bonnet  ›››
page 187.
● Press on the tabs ›››
Fig. 172 (arrows) in the
direction of the arrows and lift the battery
cover up. »
197
Technical data
Advice
Operation
Emergencies
Safety

Advice
Checking the battery electrolyte level
● Make sure there is sufficient lighting to
c l
e
arly recognise the colours. Never use
flames or shiny objects as a light source.
● Depending on the level of acid, the Magic
eye on the top of
the battery will change col-
our.
Colour indica-
torNecessary operations
Light yellow or
colourlessThe electrolyte level of the vehicle's
battery is too low. Have the battery
checked and, where applicable, re-
placed by a specialised workshop.
BlackThe electrolyte level of the vehicle's
battery is correct. WARNING
Working with the vehicle battery involves a
risk of

corrosion, explosions and electric
shock.
● Never tilt the vehicle battery. Battery acid
coul
d spill out of the openings for the release
of gases and cause corrosion damage.
● Never open the vehicle battery.
● If battery acid splashes on you, immediate-
ly rinse
your eyes and skin abundantly with
water for several minutes. Then seek medical
care immediately.
● If acid is swallowed by mistake, consult a
doctor immediat
ely. Charging, replacing and connecting or
di
s
c

onnecting the battery Charging the battery
The v
ehic

le battery should be charged by a
specialised workshop only, as batteries us-
ing special technology have been installed
and they must be charged in a controlled en-
vironment ››› . SEAT recommends taking
your c ar in f

or technical service.
Replacing a vehicle battery
The battery has been developed to suit the
conditions of its location and has special
safety features. If the battery must be re-
placed, consult a technical service for infor-
mation on electromagnetic compatibility, the
size and maintenance, performance and
safety requirements of the new battery in
your vehicle before you purchase one. SEAT
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
y

ou must disconnect the battery from the
electrical system, please note the following:
● Switch off the ignition and all electrical
equipment.
● The v

ehicle must be unlocked before dis-
connecting the b
attery, otherwise the alarm
will be triggered.
● First disconnect the negative cable and
then the positiv
e ››› .
C onnectin
g the
vehicle's battery
● Before reconnecting the battery, switch off
the engine and all
electrical devices.
● First reconnect the positive cable and then
the negativ
e ››› .
Diff er
ent
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 88. Respect the maximum service in-
tervals permitted ››› Booklet Maintenance
Programme.
198

Checking and refilling levels
Automatic device disconnection
The int el
lig
ent 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-
ternat
or provides more electricity.
● Where necessary, the power to the most
power
ful devices is reduced or even com-
pletely disconnected.
● On starting the engine, the power supply
from the 12-v
olt 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
star
ting the engine, particularly if the ignition
is switched on.
● Use of electrical devices with the engine
switc
hed off. WARNING
Incorrectly securing the battery or using the
wron g b

attery can cause short-circuits, fire
and serious injuries.
● Always use only maintenance-free batter-
ies, prot
ected 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-
le a

sed when the battery is under charge.
● The batteries should be charged in a well-
ventil
ated room only.
● Never charge a frozen or recently thawed
batter
y. 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 shor
t circuit. Reconnect first the posi-
tive cable and then the negative cable. CAUTION
● Never di s

connect the battery if the ignition
is switched on or if the engine is running.
This could damage the electrical system or
electronic components.
● Never plug accessories that supply current,
such a
s solar panels or a battery charger, to
the 12-volt power socket or the cigarette
lighter. This could damage the vehicle's elec-
trical system. For the sake of the environment
Dispose of the battery in an environment-
friendly m anner

. Batteries contain toxic sub-
stances such as sulphuric acid and lead. For the sake of the environment
Battery acid can contaminate the environ-
ment. C o

llect any spilt service fluids and dis-
pose of them correctly. 199
Technical data
Advice
Operation
Emergencies
Safety

Technical features
Technical data
T ec
hnic
al features
Important information Introduction The information in the vehicle documentation
alwa
y

s takes precedence over the informa-
tion in this Instruction Manual.
All technical specifications provided in this
documentation are valid for the standard
model in Spain. The vehicle data card inclu-
ded in the Maintenance Programme or the
vehicle registration documents shows which
engine is installed in the vehicle.
The figures may be different depending
whether additional equipment is fitted, for
different models, for special vehicles and for
other countries. Abbreviations used in the Technical Specifi-
cation
s

section
kWKilowatt, engine power measurement.
PSPferdestärke (horsepower), formerly
used to denote engine power.
rpmRevolutions per minute - engine speed.
NmNewton metres, unit of engine torque.
CZCetane number, indication of the diesel
combustion power.
RONResearch octane number, indication of
the knock resistance of petrol. Vehicle identification data
Fig. 179
Vehicle data label. Fig. 180
Vehicle identification number. Vehicle identification number
The
v
ehic
le identification number (chassis
number) can be read from outside the vehicle
through a viewer in the windscreen
››› Fig. 180. This viewer is located in the lower
part of the windscreen. The vehicle identifica-
tion number (chassis number) is also stam-
ped on the right water drain channel. The wa-
ter drain channel is located between the sus-
pension tower and the wing. Open the bon-
net to read the vehicle identification number
 .
Vehicle data plate
The vehicle data label ››› Fig. 179 is at the
front of the spare wheel well. It contains the
following data:
Vehicle identification number (chassis
number).
Vehicle type, engine power, gearbox type. »
1 2
211
Technical data
Advice
Operation
Emergencies
Safety

Technical data
Engine and gearbox code, paint number,
int erior equipment
.
Option
al extras, PR numbers.
These data are also provided in the Mainte-
nance Programme.
Specific vehicle weight information The instructions in the official vehicle docu-
ments t
ak

e precedence. All the technical data
provided in this documentation is applicable
to the basic model. The vehicle data label in
the Maintenance Programme or the vehicle
documentation shows which engine is instal-
led in your vehicle.
The figures may be different depending
whether additional equipment is fitted, for
different models and for special vehicles.
Kerb weight values shown in the following ta-
ble apply to a vehicle with driver (75 kg), liq-
uids including a fuel tank 90% full, in addi-
tion to tools and a spare wheel ››› . The
k erb w
eight

indicated increases with optional
equipment and retrofitting of accessories,
while proportionally reducing carrying ca-
pacity.
The load is equivalent to the following
weights:
● Passengers.
● Total equipment.
3 4 ●
Roof
lo

ad, included in the carrier. WARNING
Exceeding the maximum authorised weight
and the loa d on the ax

les could cause dam-
age to the vehicle, accidents and serious in-
juries.
● The real load on the axles should never ex-
ceed the max
imum permitted.
● The load and its distribution in the vehicle
have eff
ects on the vehicle handling and the
braking ability. Always drive at a suitable
speed. CAUTION
Distribute the load as uniformly and as low
down on the v

ehicle as possible. When trans-
porting heavy objects in the luggage com-
partment, these should be placed as far for-
ward as possible or over the rear axle to have
as little influence on handling as possible. Fuel consumption
Approved consumption values are derived
fr
om me
a

surements performed or supervised
by certified EU laboratories, according to the
legislation in force at the time (for more infor-
mation, see the Publications Office of the Eu-
ropean Union on the EUR-Lex website: © Eu-
ropean Union, http://eur-lex.europa.eu/) and
apply to the specified vehicle characteristics. The values relating to fuel consumption and
CO
2 emis

sions can be found in the documen-
tation provided to the purchaser of the vehi-
cle at the time of purchase.
Fuel consumption and CO 2 emissions depend
on the equipment/features of each individual
vehicle, as well as on the driving style, road
conditions, traffic conditions, environmental
conditions, load or number of passengers. Note
In practice, and considering all the factors
mentioned here, c on

sumption values can dif-
fer from those calculated in the current Euro-
pean regulations. Wheels
Ty
r

e pressure, snow chains and wheel
bolts Tyre pressure
The s
tic
k

er with the tyre pressure values can
be found on the inside of the fuel tank flap.
The tyre pressure values are given for cold
tyres ›››
page 203. The slightly raised pres-
sures of warm tyres must not be reduced.
››› 212