2017 Seat Mii battery

Operation
Conditions for the engine to restart automat-
ic a
l
ly
The engine can be automatically restarted in
the following cases:
● If the vehicle starts to moves.
● If the battery voltage drops.
Conditions
requiring engine start-up using
the key
The engine has to be manually started in the
following cases:
● If the driver unbuckles his/her seat belt.
● If the driver door is opened.
● If the bonnet is opened.
Switc
hing the Start-Stop system on and off
● Press the button  situat
ed in the centre
console ››› Fig. 158.
● The button will light up when the Start-Stop
syst
em is switched off.
The engine will start immediately if the vehi-
cle is in Stop mode when the system is
switched off by hand. WARNING
The smart technology included in the hill
hol d c

annot change the laws of physics. Do
not let the extra convenience afforded by the hill hold tempt you into taking any risks
when drivin
g.
● An

y accidental movement of the vehicle
coul
d result in serious injury.
● The hill hold is not a replacement for driver
awar
eness.
● Adjust your speed and driving style to visi-
bility
, weather, road and traffic conditions.
● The hill hold cannot always keep the vehi-
cle at
a standstill on a slope or brake suffi-
ciently when travelling downhill (e.g. on slip-
pery or frozen surfaces). WARNING
The brake servo and the electromechanical
st eerin

g do not work when the engine is
switched off.
● The vehicle must never be allowed to move
with the engine sw
itched off.
● Disconnect the Start-Stop system before
workin
g in the engine compartment. CAUTION
The vehicle's battery could be damaged if the
vehic l

e is used for long periods at very high
outside temperatures. Note
In some cases, it may be necessary to start
the engine b y

hand using the key. Refer to the corresponding control lamp on the instru-
ment p
anel

.162

Advice
WARNING
The high voltages of the electrical system can
give el ectric
shocks as well as causing burns
and serious injury and possibly even death!
● Never cause short circuits in the electrical
syst
em. The battery could explode.
● To minimise the risk of electric shock and
serious c
onsequences while the engine is
running or starting the engine, note the fol-
lowing:
– Never touch the electrical wiring of the
ignition system. WARNING
In the engine compartment, there are rotat-
ing p ar

ts that could cause serious injury.
● Never place your hands directly on or near
the radi
ator fan. Touching the rotor blades
could seriously harm you. The ventilator
works according to the engine temperature
and could start suddenly even when the igni-
tion is turned off and the key is removed.
● If any work has to be performed when the
engine is
started or with the engine running,
there is an additional, potentially fatal, safety
risk from rotating parts, such as the drive
belts, alternator, radiator fan, etc., as well as
from the high-voltage ignition system. Al-
ways work with the utmost caution.
– Always make sure that no parts of your
body, jewellery, ties, loose clothing and
long hair can be trapped by the rotating
parts of the engine. Before any work, re- move ties and jewellery (necklaces, etc),
tie long h
air b

ack 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, s
uch 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 e a

sily 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 ma
y ignite hot engine parts and
cause injuries.
● If it is necessary to work on the fuel system
or the electrica
l 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. ●
Alw a

ys keep a recently serviced and per-
fectly working fire extinguisher close by.
● Never cover the engine with additional in-
sul
ating materials such as a blanket. Risk of
fire! WARNING
If the bonnet is not correctly closed, it could
s ud den

ly 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.
● Make sure the bonnet is opened and closed
safely
(when the engine is off, no smoke is
coming from the engine compartment, there
is enough space around the car, no people
are near, etc.). CAUTION
● When refi l

ling 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! 188

Advice
● Chec k
ther
e is enough water in the reser-
voir.
● To top up, mix water with a window cleaner
recommended b
y SEAT ››› . Please follow
the in s
truction
s for use found on the packag-
ing.
● In cold weather, a special antifreeze should
also be ad
ded to prevent the water from
freezing.
Reservoir capacity
The washer bottle capacity is approximately 3
litres. WARNING
If the water from the windscreen washer does
not c ont

ain enough anti-freeze, it may freeze
on the windscreen and rear window, reducing
forward and rear visibility.
● In winter, ensure the windscreen washer
contain
s enough anti-freeze.
● In cold conditions, you should not use the
winds
creen wiper system unless you have
warmed the windscreen with the ventilation
system. The antifreeze could freeze on the
windscreen and reduce visibility. WARNING
Never mix an unsuitable antifreeze or other
simi l

ar additives with the windscreen washer
water. A greasy layer may be formed on the
windscreen which will impair visibility. ●
Use c l

ean water with a window cleaner rec-
ommended by SEAT.
● If necessary, add a suitable antifreeze to
the water in the r
eservoir. CAUTION
● Do not mix

cleaning products recommen-
ded by SEAT with other products. This could
lead to flocculation and may block the wind-
screen washer jets.
● When topping up service fluids, make abso-
lutely c
ertain that you fill the fluids into the
correct reservoirs. Using the wrong fluids
could cause serious malfunctions and engine
damage! Vehicle battery
Intr oduction Read the additional information carefully
› ›
›

 page 33.
The battery is a component of the vehicle's
electrical system.
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
w ork
c

arried out by a specialised workshop.
SEAT recommends taking your car in for tech- nical service. Negligent work can cause seri-
ous injur

y.
Location of the vehicle battery
The battery is located in the engine compart-
ment.
Explanation of the warning indications on
the vehicle's battery 
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-
trica l

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 al
l electrical de-
vices then disconnect the negative connec-
tion on the battery. 196

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

Advice
tyres wear too quickly, have the wheel align-
ment c
hec
ked at a specialised workshop. WARNING
If you notice unusual vibration or the car pulls
to one s ide whi

le driving, this may indicate
that one of the tyres is damaged.
● Reduce speed immediately and stop, while
obser
ving the highway code.
● Check the wheels and tyres for damage.
● Never carry on driving on worn tyres or
wheels. Reque
st qualified assistance immedi-
ately.
● If there is no visible exterior damage, drive
slowly
and carefully to the nearest special-
ised workshop and have the vehicle checked. Tyre monitor system* 
Fig. 176
Centre console: tyre monitor system
b utt
on The tyre control lamp compares wheel revolu-
tion
s
and w

ith it, the wheel diameter of each
wheel using the ESC. If the diameter of a
wheel changes, the tyre control lamp 
lights up. The wheel diameter changes when:
● Tyre pressure is insufficient.
● The tyre structure is damaged.
● The vehicle is unbalanced because of a
load.
● The wheel

s of one axle are under more
pres
sure (for example, driving with a trailer or
on steep slopes).
● The vehicle is fitted with snow chains.
● The temporary spare wheel is fitted.
● The wheel on one axle is changed.
Tyr
e pressure adjustment
On adjusting tyre pressure or changing one
or more wheels, the ››› Fig. 176 button must
be kept pressed down, with the ignition on,
until an acoustic signal is heard.
If the wheels are under excessive load (for ex-
ample, driving with a trailer or heavy load),
the tyre pressure must be increased to the
recommended value for a full load (see the
sticker on the inside of the fuel flap). If the
tyre monitor system button is pressed down,
the new tyre pressures are confirmed. The tyre pressure control lamp
 lights up
If
the tyre pressure of a wheel is much lower
than the value set by the driver, then the tyre
pressure control lamp ››› will light up.
WARNING
● When the tyr e pr

essure control lamp lights
up, reduce speed immediately and avoid any
sudden turning or braking manoeuvre. Stop
when possible, and check the tyre pressure
and status.
● The driver is responsible for maintaining
correct
tyre pressures. For this reason, tyre
pressure must be regularly checked.
● Under certain circumstances (e.g. when
driving in a s
porty manner, in winter condi-
tions or on a dirt track) the tyre control lamp
may light up belatedly or may function incor-
rectly. Note
If the battery is disconnected, the yellow
warnin g l

amp  lights up after turning the
ignition on. This should turn off after a brief
journey. 206

Index
Index
A
Abr o
a
d
extended stay abroad with your vehicle . . . . . 179
sale of vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . 179
ABS see Anti-lock brake system . . . . . . . . . . . . . . . 137
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Acoustic alarm seatbelt unfastened . . . . . . . . . . . . . . . . . . . . . . 53
Adjust front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Adjusting lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
rear head restraints . . . . . . . . . . . . . . . . . 51, 112
seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Adjusting the head restraints rear head restraints . . . . . . . . . . . . . . . . . . . . . 112
Advice for driving spare wheel or temporary spare wheel . . . . . . 207
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . 14, 58 activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
cleaning dash panel . . . . . . . . . . . . . . . . . . . . . 178
control and warning lamps . . . . . . . . . . . . . . . . 62
description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
front airbags . . . . . . . . . . . . . . . . . . . . . . . . . 14, 61
functioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
locking the vehicle after deployment . . . . . . . . 95
repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
use of child seats . . . . . . . . . . . . . . . . . . . . . . . . 15
vehicle care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . 129
air recir culation . . . . . . . . . . . . . . . . . . . . . . . . . 130
air vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
climatronic . . . . . . . . . . . . . . . . . . . . . . . . 28, 129
instructions for use . . . . . . . . . . . . . . . . . . . . . 132
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
water under vehicle . . . . . . . . . . . . . . . . . . . . . 133
Air recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . 130 climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
how it works . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Air vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . 166, 180
Anti-freeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Anti-lock brake system . . . . . . . . . . . . . . . . . . . . . 137
Anti-lock system . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Anti-puncture . . . . . . . . . . . . . . . . . . . . . . . . . . 35, 72
Anti-puncture kit . . . . . . . . . . . . . . . . . . . . . . . . 35, 72 check after 10 minutes . . . . . . . . . . . . . . . . . . . . 74
do not use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Anti-puncture set . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Anti-theft security system . . . . . . . . . . . . . . . . . . . 97
Ashtray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Aspects to take into account before starting the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
ASR see Traction control system . . . . . . . . . . . . . . . 137
Assistance systems brake assist system (BAS) . . . . . . . . . . . . . . . . 138
cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . 155
electronic differential lock (EDS) . . . . . . . . . . . 138
optical parking system (OPS) . . . . . . . . . . . . . 154
parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
parking distance warning system . . . . . . . . . . 154
safety Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 traction control (ASR) . . . . . . . . . . . . . . . . . . . . 138
traction contr
ol (TC) . . . . . . . . . . . . . . . . . . . . . 138
Assisted starting . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Audible warning control and warning lamps . . . . . . . . . . . . . . . . 25
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Automatic belt retractor . . . . . . . . . . . . . . . . . . . . . 57
Automatic device disconnection battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Automatic dipped beam control . . . . . . . . . . . . . 104
Automatic gearbox driving tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
ignition key removal lock . . . . . . . . . . . . . . . . . 134
kick-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
starting on a slope . . . . . . . . . . . . . . . . . . . . . . 145
stopping on a slope . . . . . . . . . . . . . . . . . . . . . 145
Automatic gear change . . . . . . . . . . . . . . . . . . . . 144
Axle loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
B Bag support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
BAS see Brake assist system . . . . . . . . . . . . . . . . . . 138
Battery changing in the vehicle key . . . . . . . . . . . . . . . . 93
Battery acid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Before starting the vehicle . . . . . . . . . . . . . . . . . . 47
Belt tension device service and disposal . . . . . . . . . . . . . . . . . . . . . 58
Belt tensioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Belt tension limiter . . . . . . . . . . . . . . . . . . . . . . . . . 57
Belt tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10, 187
Brake assist system . . . . . . . . . . . . . . . . . . . . . . . 137
219