2017 Seat Mii change time

Operation
Possible malfunction in the laser sensor
If l
a
ser sensor operation is impaired, for ex-
ample due to heavy rain, mist, snow or dirt,
the City Safety Assist system function is tem-
porarily switched off. On the instrument pan-
el display the control lamp  flashes.
When the fault in the laser sensor has been
rectified, the City Safety Assist system func-
tion automatically becomes available again.
The control lamp  switches off.
The following conditions could prevent the
City Safety Assist system from functioning:
● Tight bends.
● Accelerator pressed all the way down to the
floor.
● If the C

ity Safety Assist system is switched
off or there i
s a fault ››› page 157.
● If the laser sensor is dirty, covered or over-
heated ›

›› page 158.
● In the event of snow, heavy rain or dense
fog.
● If ther

e are vehicles in front.
● Vehicles changing lanes.
● Vehicles moving in the opposite direction
in the same lane.
● V

ery dirty vehicles with a low degree of re-
flection.
● Pre

sence of thick dust. Hill driving assistant*
Operation This function is only included in vehicles with
ESC.
The hi
l

l driving assistant helps the driver to
move off and upward on a hill when the vehi-
cle is stationary.
The system maintains brake pressure for ap-
proximately two seconds after the driver
takes his foot off the brake pedal to prevent
the vehicle from lurching backward when it is
started. During these 2 seconds, the driver
has enough time to release the clutch pedal
and accelerate without the vehicle moving
and without having to use the handbrake,
making start-up easier, more comfortable
and safer.
These are the basic operation conditions:
● being on a ramp or hill/slope,
● doors closed,
● vehicle completely stationary,
● engine running and foot on the brake,
● besides having a gear engaged or being in
neutral f

or manual gear change and with the
selector lever at positions S, D or R in vehi-
cles with an automatic gearbox.
This system is also active when reversing up-
hill. WARNING
● If y

ou do not start the vehicle immediately
after taking your foot off the brake pedal, the
vehicle may start to roll back under certain
conditions. Depress the brake pedal or use
the hand brake immediately.
● If the engine stalls, depress the brake ped-
al or u
se the hand brake immediately.
● When following a line of traffic uphill, if you
want t
o prevent the vehicle from rolling back
accidentally when starting off, hold the brake
pedal down for a few seconds before starting
off. Note
The Official Service or a specialist workshop
can t el

l you if your vehicle is equipped with
this system. Start-Stop System
C ontr
o

l lamps 
It lights up
The Start-Stop system is enabled.
160

Checking and refilling levels
driving. Whenever the ignition is switched
on, the needl e c
h
anges first for a few sec-
onds to the petrol area in order to display the
current level of fuel. The needle then moves
to the natural gas area. After the engine is
started, the needle changes to the area corre-
sponding to the current operating mode.
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-
su lt

in the vehicle breaking down in traffic
and a serious accident.
● If the fuel level is too low then the fuel sup-
ply t
o 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 f
uel tank left to avoid running out of
fuel. CAUTION
● Alw a

ys 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
irregu
lar 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 ins trument

panel ››› Fig. 164 indicates the
side of the vehicle on which the fuel tank flap
is located. Refuelling with petrol
Fig. 166
Open fuel tank flap with tank cap in
the ho l
der Read the additional information carefully
› ›
›

 page 31
Before refuelling, always turn off the engine,
the ignition, mobile telephones, auxiliary
heating and keep them off during refuelling.
Refuelling
The correct petrol type for the vehicle is loca-
ted on a sticker inside the fuel tank flap
››› page 181.
● If the automatic filler nozzle is operated
correctly
, it will switch itself off as soon as
the fuel tank is full ››› .
● Do not continue to refuel if it is turned off!
Other w
i

se, this will fill the expansion cham-
ber and fuel may leak out if the ambient con-
ditions are warm.
Vehicles with a natural gas engine
Every 6 months it is necessary to run on pet-
rol until the control lamp switches off  and
then the tank must be refilled. This is neces-
sary to ensure the efficient operation of the
system and the fuel quality required for run-
ning on gas. WARNING
Do not continue refilling once the fuel nozzle
ha s

switched itself off. The fuel tank may be
filled too much. As a result, fuel may spurt
out and spill. This could lead to a fire, explo-
sion and severe injuries. » 185
Technical data
Advice
Operation
Emergencies
Safety

Advice
●
When refi l
ling liquids, avoid spilling them
on parts of the engine and the exhaust sys-
tem. Spilled liquids could cause a fire. Under
specific circumstances, the ethylene glycol
can catch fire. WARNING
If there is not enough anti-freeze in the cool-
ant sys

tem, the engine may fail leading to se-
rious damage.
● Please make sure that the percentage of
additiv
e 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 cool
ant 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
● If ther e i

s no appropriate coolant liquid
available, fill it using distilled water, and
nothing else. Any other type of water may
lead to considerable rusting in the engine
due to its chemical components. This could
consequently damage the engine. If you have
not used distilled water but another type of
water to top up the coolant, a specialised
workshop must immediately replace all of the
fluid in the engine cooling system.
● Only top up coolant to the top level of the
marked ar
ea ››› Fig. 170. Otherwise the ex- cess coolant will be forced out of the cooling
sys
t

em when the engine is hot, causing dam-
age.
● If a lot of liquid coolant has been lost, wait
for the engine t
o cool down completely before
adding coolant. Extensive coolant loss is an
indication of leaks in the engine cooling sys-
tem. Have the engine cooling system inspec-
ted immediately by a specialised workshop.
Otherwise engine damage may occur.
● When refilling service liquids, ensure that
you put
the liquids into the right tank. Mak-
ing a mistake when refilling could cause seri-
ous malfunctions and damage the engine! CAUTION
The original additives should never be mixed
with c oo

lants 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 b
ut is, for example, brown, this indicates
that the G13 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. Brake fluid
Chec k
in

g the brake fluid level Read the additional information carefully
›› ›

 page 33
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
››› .
Br ak
e fluid s

pecifications
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 brake fluid is used for different rea-
sons, use a brake fluid that complies with the
United States standard FMVSS 116 DOT 4 or
194

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

Wheels and tyres
The service life of tyres is dependent on tyre
pr e
s
sure, 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
obs
tacle, drive very slowly and as near as
possible at a right angle to the kerb.
● Inspect the tyres regularly for damage
(punct
ures, cuts, cracks, dents).
● Remove any foreign bodies found on the
outside of the ty
re tread and ensure that they
have not passed through the wall of the tyre
››› page 205.
● In addition, the instructions for tyre control
syst
ems should always be observed.
● Replace damaged or worn tyres as soon as
poss
ible ››› page 205.
● Regularly check tyres for non-visible dam-
age ››

› page 205.
● Never exceed the maximum permitted
speed or loa
ds specified for the type of tyre
fitted on your vehicle ››› page 208.
● Do not allow tyres (including the spare
wheel) to come int
o contact with aggressive substances, grease, oil, fuel or brake fluid
›››
.
● Lost valve caps should be replaced imme-
di at
ely

.
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 208. 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. 173. The useful life of all the tyres will
then be about the same time.
SEAT recommends you take the vehicle to a
specialised workshop to have the tyres
changed. Tyres over 6 years old
Tyr

es are subject to an ageing process as a
result of physical and chemical processes.
This may affect their performance. Tyres
which are stored for long periods of time
without being used, harden and become
more fragile than tyres which are in constant
use.
SEAT recommends that tyres over six years
old are replaced with new tyres. This also ap-
plies to tyres (including the spare wheel)
which appear to be in perfect condition on
the outside and which have a tread depth
within the values stipulated by the Law ››› .
The d at
e of

manufacture, part of the tyre
identification number (TIN), indicates the age
of the tyre ( ) ››› page 208.
Storing tyres
Mark tyres when you remove them to indicate
the direction of rotation (left, right, forwards,
backwards). This ensures you will be able to
mount them correctly when you replace
them. When removed, the wheels and/or
tyres should be stored in a cool, dry and pref-
erably dark location. Do not place tyres
mounted on the wheel in a vertical position.
Protect tyres not mounted on wheels from
dirt by storing them in suitable bags and
standing them on the ground on their tread. »
201
Technical data
Advice
Operation
Emergencies
Safety

SEAT S.A. is permanently concerned about continuous development of its t\
ypes and models. For this reason we ask you to under-
stand, that at any given time, changes regarding shape, equipment and te\
chnique may take place on the car delivered. For this reason
no right at all may derive based on the data, drawings and descriptions \
in this current handbook.
All texts, illustrations and standards in this handbook are based on the\
status of information at the time of printing. Except for error
or omission, the information included in the current handbook is valid a\
s of the date of closing print.
Re-printing, copying or translating, whether total or partial is not all\
owed unless SEAT allows it in written form.
SEAT reserves all rights in accordance with the “Copyright” Act.
All rights on changes are reserved.
❀This paper has been manufactured using bleached non-chlorine cellulose.
© SEAT S.A. - Reprint: 15.11.17
About this manual
This manual contains a description of the
equipment supplied with the vehicle at the
time this manual was published. Some of the
units described herein will not be available
until a later date or are only available in cer -
tain markets.
Because this is a general manual for the Mii,
some of the equipment and functions that are
described in this manual are not included in
all types or variants of the model; they may
vary or be modied depending on the techni -
cal requirements and on the market; this is in
no way deceptive advertising.
The illustrations are intended as a general
guide and may vary from the equipment tted
in your vehicle in some details.
The steering indications (left, right, forward,
reverse) appearing in this manual refer to the
normal driving movements of the vehicle ex -
cept when otherwise indicated.
The equipment marked with an aster -
isk* is tted as standard only in certain
versions, and is only supplied as op -
tional extras for some versions, or are
only offered in certain countries.
® All registered marks are indicated with
®. Although the copyright symbol does
not appear, it is a copyrighted mark.
>> The section is continued on the follow -
ing page.
Important warnings on a given page
Detailed contents on a given page
General information on a given page

Emergency information on a given page

WARNING
Texts preceded by this symbol contain infor -
mation on safety. They warn you about possi -
ble dangers of accident or injury.
CAUTION
Texts with this symbol draw your attention to
potential sources of damage to your vehicle.
For the sake of the environment
Texts preceded by this symbol contain rele-
vant information concerning environmental
protection.
Note
Texts preceded by this symbol contain additio -
nal information.
This manual is divided into six large parts,
which are:
1. The essentials
2. Safety
3. Emergencies
4. Operation
5. Tips
6. Technical data
At the end of this manual, there is a detailed
alphabetical index that will help you quickly
nd the information you require.