2014 Seat Mii check engine light

Checking and refilling levelsFlashes for about 10
secondsState of the barsPossible cause ››› Solution
and the segments
remaining a)Reserve zone (four small segments)The fuel tank is almost empty.
The reserve tank is being used
››› page 203.Refuel as soon as possible ››› .
–The vehicle is running in natural gas operating mode.–
a)
This only applies to vehicles with the fuel gauge on the dash panel display.
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.
In natural gas engines
The warning lamp  lights up when both fuel
type

s (petrol and natural gas) have reached
reserve level.
The warning lamp  lights up when the vehi-
cl

e is running in natural gas operating mode.
The warning lamp  switches off when the
natural gas is exhausted. The engine
changes to operate with petrol.
Problem:
if the vehicle is left parked for a
long time just after refuelling, the gas level
indicator does not accurately indicate the
same level shown after refuelling when the
vehicle is started up again. This is not due to
a leak in the system, but to a drop in pres-
sure in the gas tank for technical reasons af- ter a cooling phase immediately after refuel-
ling. WARNING
Driving with insufficient fuel reserve could re-
sult in the vehicle breaking down in traffic
and a serious accident.
● If the fuel level is too low then the fuel sup-
ply to the engine can become irregular espe-
cially on slopes.
● If the engine “is choked” or stalls due to
lack of or irregularity of the fuel supply, the
power steering as well as all of the driver as-
sistance systems including braking assis-
tance will stop working.
● Always refuel when there is only one quar-
ter of the fuel tank left to avoid running out of
fuel. CAUTION
● Always pay attention to any lit control
lamps and to the corresponding descriptions and instructions to avoid damage to the vehi-
cle.
● Never run the fuel tank completely dry. An
irregular fuel supply may lead to ignition
faults and unburnt fuel could enter the ex-
haust system. This could damage the catalyt-
ic converter. Note
The arrow next to the fuel pump symbol on
the instrument panel ››› Fig. 101 indicates the
s ide of

the vehicle on which the tank flap is
located. 141
Technical specifications
Advice
Operation
Safety

Advice
Fig. 106
C: Bonnet securing rod in the bon-
net. D: Bonnet supported by the bonnet se-
curing rod Opening the bonnet
● Before opening the bonnet, make sure that
the windscreen wiper arms are in place
against the windscreen ››› .
● Pull the release lever 1 in the direction of
the arrow ›››
Fig. 105
A. The bonnet is re- leased from the lock carrier by a spring mech-
anism
››› .
● Lift the bonnet up slightly while pressing
the release lever 2
B
in the direction of the
arr

ow to completely open the bonnet.
● Take out the bonnet support rod from its
clip in the direction of the arrow 3
C
and
p

lace it in the corresponding open position
4
D
(arrow).
C

losing the bonnet
● Slightly lift the bonnet ››› .
● Take out the bonnet support rod from the
opening catch 4
D
and insert it into its clip
3
C
in the opening catch.
● L

et the bonnet fall from a height of 30 cm
into its clip; Do not
apply pressure!
If the bonnet is not correctly closed, open it
once again and close it correctly.
The bonnet is correctly closed when it is flush
with the corresponding parts on the body-
work. WARNING
If the bonnet is not correctly closed, it could
suddenly open while driving leaving the driv-
er without visibility. This could result in a se-
rious accident.
● After closing the bonnet, always check that
it is properly secured by the locking mecha-
nism in the lock carrier piece. The bonnet must be flush with the surrounding body pan-
els.
●
While driving, if you notice that the bonnet
is not correctly closed then stop immediately
and close it correctly.
● Only open and close the bonnet when there
is nobody within its range. CAUTION
● To avoid damage to the bonnet and to the
windscreen wiper arms, only open it when
the windscreen wipers are in place against
the windscreen.
● Before driving, always lower the wiper
arms. Engine oil
Introduction WARNING
Incorrectly handling engine oil can cause in-
jury and serious burns.
● Always protect your eyes when handling
engine oil.
● Oil is toxic and must be kept out of the
reach of children.
● Engine oil should only be kept in its origi-
nal packaging; the same goes for used oil un-
til it is disposed of. 146

Advice
Engine coolant Introduction WARNING
Engine coolant is toxic!
● Only keep engine coolant in its original
container, tightly shut and in a safe place.
● Never store engine coolant in empty food
containers or bottles as other people may ac-
cidentally drink it.
● Always keep engine coolant out of reach of
children.
● Ensure that the proportion of engine cool-
ant additive corresponds to the lowest out-
side temperature to which the vehicle will be
exposed.
● If the outside temperature is extremely low,
the engine coolant could freeze causing the
vehicle to stop. As this would also cause the
heating to stop working, vehicle occupants
without warm clothing could freeze. For the sake of the environment
Coolants and additives can contaminate the
environment. Collect any spilt fluids in suita-
ble containers and dispose of them in accord-
ance with legislation and with the utmost re-
spect for the environment. Coolant warning lamp
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.It lights
upPossible
causeSolution 
Excessive en-
gine coolant
temperature.  Stop the vehicle!
Stop the vehicle safely as
soon as possible. Switch
off the engine and let it
cool.
Insufficient en-
gine coolant
level. 
¡Stop the vehicle!
Check the engine coolant
when the engine has
cooled and, if it is low, re-
fill with engine coolant
››› page 151.
Engine coolant
system faulty.  Do not drive any fur-
ther.
Obtain professional as-
sistance.
FlashesPossible
causeSolution 
Engine coolant
system faulty.Seek specialist assis-
tance. WARNING
Observe the safety warnings ››› in Control
and warning lamps on page 40. Note
On the display of the Portable Navigation
System (supplied by SEAT) ››› page 123 an en-
gine coolant temperature gauge can be seen. Engine coolant specifications
The engine cooling system is supplied from
the factory with a specially treated mixture of
water and, at least, 40 % of the additive
G 13
(TLVW 774 J). The engine coolant additive is
recognisable by its purple colour. This mix-
ture of water and additive gives the necessa-
ry frost protection down to -25°C (-13 F) and
protects the light alloy parts of the cooling
system against corrosion. It also prevents
scaling and considerably raises the boiling
point of the coolant.
To protect the engine cooling system, the
percentage of additive must always be at
l e

ast 40 %, even in warm climates where an-
ti-freeze protection is not required.
If greater frost protection is required in very
cold climates, the proportion of additive can
be increased. However, the percentage of ad-
ditive should not exceed 60%, as this would
150

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
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
Technical specifications
Advice
Operation
Safety

Advice
WARNING
Observe the safety warnings ››› in Control
and warning lamps on page 40. Checking the electrolyte level of the
vehicle battery
Fig. 113
In the engine compartment: Remove
the cover from the vehicle's battery. The battery's electrolyte level should be
checked 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
compartment ››› page 143
● Open the bonnet  ››› page 143.
● Press on the tabs ››› Fig. 113 (arrows) in the
dir ection of
the arrows and lift the battery
cover up.
Checking the battery electrolyte level
● Make sure there is sufficient lighting to
clearly 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 in-
dicatorNecessary operations
Light yellow
or colourlessThe electrolyte level of the vehicle's bat-
tery is too low. Have the battery checked
and, where applicable, replaced by a
specialised workshop.
BlackThe electrolyte level of the vehicle's bat-
tery is correct. WARNING
Working with the vehicle battery involves a
risk of corrosion, explosions and electric
shock. ●
Never tilt the vehicle battery. Battery acid
could 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 immediately. Charging, replacing and connecting or
disconnecting the battery
Charging the battery
The vehicle 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 car in for 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
156

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

Advice
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.
● Never plug accessories that supply current,
such as 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 manner. Batteries contain toxic sub-
stances such as sulphuric acid and lead. For the sake of the environment
Battery acid can contaminate the environ-
ment. Collect any spilt service fluids and dis-
pose of them correctly. Wheels and tyres
Wheels Introduction SEAT recommend that all work on tyres and
wheels is carried out by a specialised work-
shop. These workshops have the necessary
special tools and replacement parts, trained
personnel and facilities for disposing of the
old tyres while respecting the environment.
SEAT recommends taking your car in for tech-
nical service.
WARNING
The vehicle cannot be totally controlled or
braked if the tyres (new or used) are worn or
damaged.
● Incorrect use of wheels and tyres could
make driving more dangerous and result in
serious accidents and damage.
● All four wheels must be fitted with radial
tyres of the same type, size (rolling circumfer-
ence) and the same tread pattern.
● New tyres do not give maximum grip and
will not have reached their maximum braking
capacity to start with, and therefore need
running in. To prevent accidents and major
damage, extreme caution should be taken for
the first 600 km. ●
Check tyre pressures regularly and ensure
they are maintained at the pressures indica-
ted. If the tyre pressure is too low, they could
overheat, resulting in tread detachment or
even burst tyres.
● Never drive on damaged (punctured, cut,
cracked or dented) or worn tyres. Driving on
damaged or worn tyres could result in burst
tyres, serious accidents or damage. Worn or
damaged tyres must be replaced immediate-
ly.
● Never exceed the maximum permitted
speed or loads specified for the type of tyre
fitted on your vehicle.
● The effectiveness of driver and brake assist
systems also depends on the grip of the
tyres.
● If you notice unusual vibration or if the ve-
hicle pulls to one side when driving, stop the
car immediately and check the tyres and
wheels for damage.
● To minimise the risk of losing control of the
vehicle or causing a serious accident, never
undo the bolted joints of beadlock wheels.
● Never mount used tyres or wheels if you are
not sure of their previous history. They may
be damaged, although the damage is not im-
mediately visible.
● Old tyres, even if they have never been
used, may lose air or burst unexpectedly
while driving, especially at high speeds, re-
sulting in serious accident and injury. If tyres
are over six years old, they should only be
used in an emergency and with extreme cau-
tion. 158