2016 Seat Mii engine

Advice
●
Never s t
art the engine when the vehicle is
raised! The vehicle may fall from the platform
due to the engine vibrations.
● If it is necessary to work underneath the ve-
hicle whi
le it is raised, you should check that
the supporting stands have an adequate load
capacity.
● Never climb onto the lifting platform.
● Always make sure that the weight of the ve-
hicle doe
s not exceed the lifting platform
load capacity. CAUTION
● Never r ai

se the vehicle at the engine oil
sump, the gearbox or the rear or front axles.
● Always use an intermediate rubber support
to prev
ent damage to the vehicle underbody.
Check that the arms of the lifting platform are
able to move with obstruction.
● The arms should not come into contact with
the side runnin
g boards or other parts of the
vehicle. Caring for and cleaning the ve-
hic
le e

xterior
Introduction Regular maintenance and washing help to
m
aint
ain the

value of the vehicle. This may
also be one of the requirements for acknowl- edging warranty claims in the event of body-
work c

orrosion or paint defects.
Products suitable for the care of your vehicle
are available at any technical service. WARNING
Car-care products may be toxic and hazard-
ous. If c

ar care products are not suitable or
are used inappropriately, this could result in
accident, serious injury, burns or intoxica-
tion.
● Car care products must always be stored in
the original
container which should be kept
closed.
● Observe information provided by the manu-
factur
er.
● To prevent confusion, never store car care
products
in empty food cans, bottles or other
containers.
● Keep all care products out of reach of chil-
dren.
● Harmfu

l vapours may be produced when us-
ing car c
are products. Therefore, care prod-
ucts should only be used in well-ventilated
spaces or in the open air.
● Never use fuel, turpentine, engine oil, ace-
tone or any
other volatile liquid to wash,
clean or care for the vehicle. These are toxic
and highly flammable. WARNING
Inappropriate care and cleaning of vehicle
component s

may effect the vehicle safety
equipment, increasing the risk of severe in-
jury.
● Vehicle components should only be
cle
aned and maintained in accordance with
the manufacturer's instructions.
● Only use approved or recommended care
products. CAUTION
Cleaning products which contain solvents will
dam ag

e the material. For the sake of the environment
Only wash the vehicle in areas allocated for
this p

urpose, to prevent dirty water which
may be contaminated by oil, grease or fuel,
from entering the drains. In some places,
even washing it outside the planned areas is
banned. For the sake of the environment
Where possible, always use products which
re s

pect the environment. For the sake of the environment
The remains of car care products should not
be dis po

sed of with ordinary household170

Care and maintenance
De-icing the door lock cylinder To de-ice the lock cylinders, SEAT recommend
the use of
g
enuine SEAT spray with lubricat-
ing and anti-corrosive properties. CAUTION
The use of products containing degreasing
agent s

to de-ice the locks may rust the lock
cylinder. Protection of vehicle undercarriage
The vehicle underbody is coated to protect it
fr
om c
hemic

al and mechanical damage. The
protective coat on the undercarriage may
wear from use while driving. Therefore, SEAT
recommends that the protective coating on
the undercarriage and on the running gear
should be regularly checked, and repaired if
necessary. WARNING
Additional underseal or anti-corrosion prod-
ucts c

ould catch fire due to the high tempera-
tures reached by the exhaust gas system and
other engine components.
● Do not apply additional underseal or anti-
corro
sion products to the exhaust pipes, cat-
alytic converters, heat shields or other parts
of the vehicle which reach high temperatures. Cleaning the engine compartment
The engine compartment of any motor vehi-
cl
e i

s a potentially hazardous area
››› page 186.
The engine compartment should only be
cleaned by qualified personnel. If it is not
correctly cleaned, the anti-corrosion coating
and consequently electrical components may
be damaged. Moreover, water may filter di-
rectly into the vehicle interior through the wa-
ter chamber ››› .
If the en gine c

ompartment is very dirty, al-
ways take the vehicle to a specialised work-
shop for professional cleaning. SEAT recom-
mends taking your car in for technical serv-
ice.
Water box
The water box is in the engine compartment,
between the windscreen and the engine, and
beneath a perforated cover. Air is taken in
through the water box from outside to the ve-
hicle interior via the heating and air condi-
tioner.
Leaves and other loose objects should be
regularly cleaned away from the water box ei-
ther by hand or with a vacuum. WARNING
When working on the engine or in the engine
comp ar

tment, there is a risk of injury, burns,
accident or fire.
● Before starting work, please ensure you are
famili
ar with the required procedure and the
safety precautions ››› page 186.
● SEAT recommends getting a specialised
workshop t
o do these jobs. CAUTION
If water is manually poured into the water box
(e.g. u s

ing a high pressure cleaning appli-
ance), this could cause significant damage to
the vehicle. For the sake of the environment
Only wash the engine compartment in areas
al loc

ated for this purpose, to prevent dirty
water which may be contaminated by oil,
grease or fuel, from entering the drains. In
some places, even washing this compartment
outside planned areas for this purpose is
banned. 175
Technical data
Advice
Operation
Emergencies
Safety

Advice
Caring for and cleaning the ve-
hic l
e int
erior
Introduction The dye from many items of modern clothing
(e.g. d
ark

jeans) is not always colour-fast.
Seat upholstery (material and leather), espe-
cially when light-coloured, may visibly discol-
our if the dye comes out of clothing (even
when used correctly). This is not an uphols-
tery defect but indicates that the dye in the
item of clothing is not sufficiently colour-fast. WARNING
Car-care products may be toxic and hazard-
ous. If c

ar care products are not suitable or
are used inappropriately, this could result in
accident, serious injury, burns or intoxica-
tion.
● Car care products must always be stored in
the original
container which should be kept
closed.
● Observe information provided by the manu-
factur
er.
● To prevent confusion, never store car care
products
in empty food cans, bottles or other
containers.
● Keep all care products out of reach of chil-
dren.
● Harmfu

l vapours may be produced when us-
ing car c
are products. Therefore, care prod- ucts should only be used in well-ventilated
sp
ac

es or in the open air.
● Never use fuel, turpentine, engine oil, ace-
tone or any
other volatile liquid to wash,
clean or care for the vehicle. These are toxic
and highly flammable. WARNING
Inappropriate care and cleaning of vehicle
c omponent s

may effect the vehicle safety
equipment, increasing the risk of severe in-
jury.
● Vehicle components should only be
cle
aned and maintained in accordance with
the manufacturer's instructions.
● Only use approved or recommended care
products. CAUTION
● Cle

aning products which contain solvents
will damage the material.
● To avoid damage, stubborn stains should
be remov
ed by a specialised workshop. Note
Suitable vehicle care products are available
from y

our technical service. How to care for the upholstery
To treat and maintain your seat upholstery,
keep the f
o

llowing in mind ››› :
● Before entering the vehicle, close any Vel-
cr o f

asteners that might snag on the uphols-
tery or trim fabric. Any open Velcro fasteners
may damage the trim or upholstery fabrics.
● To prevent damage, avoid direct contact
between sharp dec
orative objects and the
upholstery and trim fabrics. Decorative ob-
jects include zips, rivets and rhinestones on
clothing and belts.
● From time to time, clean the dust that gath-
ers in the per

forations, folds and seams so
that the surfaces of the seats are not dam-
aged by its abrasive effect.
● Make sure clothes are colour-fast to avoid
them running and s
taining the upholstery.
This is especially important if the upholstery
is light in colour. CAUTION
If the instructions for upholstery and trim
car e ar

e not followed, they may deteriorate
and discolour. Note
SEAT recommends you take the vehicle to a
Spec i

alised workshop to treat any stains on
the upholstery caused by the discolouration
of clothing. 176

Care and maintenance
Notes for the user Intr oduction WARNING
Failure to treat the vehicle with the correct
car e inc
reases the risk of accident and injury.
● Observe legal requirements.
● Observe the Instruction Manual. CAUTION
If the vehicle is not properly cared for, dam-
age m a

y occur.
● Observe legal requirements.
● Carry out regular maintenance of the vehi-
cle, ac
cording to specifications in the Mainte-
nance Programme.
● Observe the Instruction Manual. Labels and plates
Fig. 163
Warnings pertaining to the handling
of the C
ity

Safety Assist system laser sensor
function Some parts in the engine compartment come
fr
om the f
act

ory with certificates of safety, la-
bels or plates containing important informa-
tion regarding the operation of the vehicle,
for example, on the fuel tank flap, on the pas-
senger's sun visor, on the driver door strut, or
on the floor of the boot.
● Never remove these certificates of safety,
labels
or plates, and ensure they are kept in
good condition and are legible.
● If a vehicle part, bearing a certificate of
safety
, label or plate, is replaced, the special-
ised workshop should attach the information
back in the same place. Certificate of safety
A certific

ate of safety on the door strut states
that all the safety standards and regulations
established by the national traffic authorities
responsible for road safety were met at the
time of manufacture. It may also give the
month and year of manufacture, together
with the chassis number.
Warning of high voltage label
There is a label close to the bonnet lock
which warns of high voltage in the vehicle's
electrical system.
Warning relating to the City Safety Assist
system laser sensor
There are some warning and information
signs on the City Safety Assist system laser
sensor ››› Fig. 163.
Using your vehicle in other countries
and continents The vehicle is manufactured at the factory for
u
se in a p
ar

ticular country in accordance with
the national legislation in force at the time of
manufacture.
If the vehicle is sold in another country or
used in another country for an extended peri-
od of time, the applicable legislation of that
country should be observed. »
179
Technical data
Advice
Operation
Emergencies
Safety

Checking and refilling levels
Checking and refilling levels
F uel
T y
pes of petrol The correct grade of petrol is listed inside the
fuel
t

ank flap, located on the right side of the
rear section of the vehicle.
The vehicle is equipped with a catalytic con-
verter and must only be run on unleaded pet-
rol. The petrol must comply with European
Standard EN 228 or German standard DIN
51626-1 and must be unleaded. You can re-
fuel with a maximum ethanol proportion of
10 % (E10). The types of petrol are differenti-
ated by their octane rating (RON).
The following titles appear on the corre-
sponding adhesive on the fuel tank flap:
Super unleaded 95 octane or normal 91 oc-
tane unleaded petrol
We recommend you use super 95 octane pet-
rol. If this is not available: normal 91 octane
petrol, with a slight decrease in power.
Super unleaded petrol with a minimum of 95
octanes
You should use super petrol with a minimum
of 95 octanes. If super is not available,
in an emergency y
ou
may refuel with normal 91 octane petrol. In
this case only use moderate engine speeds
and a light throttle. Refuel with super as soon
as possible.
In all cases, you may use 98 octane petrol.
Petrol additives
The quality of the fuel influences the behav-
iour, power and service life of the engine.
This is why the petrol you use should carry
suitable additives already included by the
petrol industry, free of metals. These addi-
tives will help to prevent corrosion, keep the
fuel system clean and prevent deposits from
building up in the engine.
If good-quality petrol with metal-free addi-
tives is not available or engine problems
arise, the necessary additives must be added
when refuelling ››› .
Not al
l

petrol additives have been shown to
be effective. The use of unsuitable petrol ad-
ditives may cause significant damage to the
engine and the catalytic converter. Metal ad-
ditives should never be used. Metal additives
may also be contained in petrol additives for
improving anti-detonation ratings or octane
ratings ››› .
S EA
T r

ecommends “genuine Volkswagen
Group Fuel Additives for petrol engines”.
These additives can be bought at SEAT deal- ers, where information on how to use them
can also be o

btained. CAUTION
● Do not r ef

uel if the filler indicates that the
fuel contains metal. LRP ( lead replacement
petrol) fuels contain high concentrations of
metal additives. Using them may damage the
engine!
● Never refuel with fuels containing a large
proportion of
ethanol (for example, E50, E85).
This could damage the fuel system.
● Just filling one full tank of leaded fuel or
fuel c
ontaining other metal additives would
seriously impair the efficiency of the catalytic
converter.
● Only use fuel additives that have been ap-
prov
ed by SEAT. Octane boosting or anti-
knock additives may contain metal additives
that could seriously damage the engine or
the catalytic converter. These additives must
not be used.
● High engine speed and full throttle can
damag
e the engine when using petrol with an
octane rating lower than the correct grade for
the engine. Note
● You m a

y use petrol with a high octane num-
ber than the one recommended for your en-
gine. » 181
Technical data
Advice
Operation
Emergencies
Safety

Advice
●
In those c ou
ntries where unleaded petrol is
not available, you may refuel with a fuel with
a low lead content. Natural gas
Natural gas
Natur
al

gas can be compressed or in liquid
form, addition to others.
Liquefied natural gas (LNG) is the result of
heavy cooling of natural gas. Therefore its
volume is considerably reduced compared
with compressed natural gas (CNG). In vehi-
cles with a natural gas engine, liquefied nat-
ural gas cannot be directly refilled, as the gas
would expand excessively in the vehicle gas
tank.
Therefore, vehicles with a natural gas engine
must only be refuelled using compressed
natural gas ››› .
Nat ur
a

l gas quality and consumption
Natural gas is divided into the groups H and
L depending on its quality.
Gas type H has a superior heating power and
inferior nitrogen and carbon dioxide content
than type L. The higher the heating power of
the natural gas, the lower the consumption
will be. However, the heating power and the propor-
tion of nitrog

en and carbon dioxide can fluc-
tuate within the quality groups. Therefore, ve-
hicle consumption can also vary when using
a single type of gas only.
The engine management automatically
adapts to the natural gas used according to
its quality. Therefore, different quality gases
can be mixed in the tank, without the need
for comprehensive draining before applying a
different quality gas.
Natural gas and safety
If you can smell gas or suspect that there is a
leak ››› :
● Stop the vehicle immediately.
● Switch the ignition off.
● Open the doors to appropriately ventilate
the v
ehic

le.
● Extinguish cigarettes immediately.
● Move away from the vehicle or switch off
obj
ects that may cause sparks or a fire.
● If you continue to smell gas, do not contin-
ue driving!
● Seek

specialist assistance. Have the fault
repair
ed. WARNING
Failure to act when you can smell gas in the
vehic l

e or when refuelling can cause serious
injuries.
● Carry out the necessary operations.
● Leave the danger zone.
● If necessary, warn the emergency services. WARNING
The vehicle is not prepared to use liquefied
nat ur

al gas (LNG) and this fuel must not be
added under any circumstances. Liquefied
natural gas can cause the natural gas tank to
explode, resulting in serious injury. 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.
182

Checking and refilling levels
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. –
Ins ur

e that the fuel container complies
with manufacturing standards, for exam-
ple, ANSI or ASTM F852-86. CAUTION
● Alw a

ys remove any fuel spilled anywhere
on the vehicle to avoid damage to the wheel
housing, the tyre and vehicle paintwork.
● Refuelling a petrol engine with diesel can
cause seriou
s engine and fuel system dam-
age; the resulting malfunctions are not cov-
ered by the SEAT warranty. If you refuel with
the wrong type of fuel, never start the engine.
This applies to even the smallest amount of
the wrong fuel. Seek specialist assistance.
With the engine running, the composition of
the wrong fuel could significantly damage the
fuel system and the engine itself. For the sake of the environment
Fuels can contaminate the environment. Col-
lect an

y spilt service fluids and allow a pro-
fessional to dispose of them. 183
Technical data
Advice
Operation
Emergencies
Safety

Advice
Control lamps and fuel gauge Fig. 164
On the instrument panel: fuel gauge
f or petr
o
l Fig. 165
On the instrument panel: Fuel gauge
f or petr
o

l and natural gas. The fuel gauge can vary depending on the ve-
hic
l
e equipment

››› Fig. 164 or ››› Fig. 165.
It lights
upPossible cause / Solution ››› 
a)
Fuel tank is almost empty. The reserve
tank is being used (red mark
››› Fig. 164)
››› page 31.
Refuel as soon as possible ›››
. 
a)
The natural gas tank is almost empty. The
reserve tank is being used (red mark
››› Fig. 165) ››› page 31.
Refuel as soon as possible ›››
.
a)
This only applies to vehicles with the fuel gauge on the dash
panel ››› Fig. 164.
Flashes for
about 10 sec- ondsPossible cause / Solution
››› 
and the seg-
ments remaining a)Fuel tank is almost empty. The re-
serve tank is being used
››› page 31.
Refuel as soon as possible ›››
.
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
While in gear, the fuel level indicator gauge
appears in the fuel area with which it is flow- ing at that time. When the ignition is connec-
ted, the gaug

e first changes for a few sec-
onds to the petrol area to show the actual
level of this petrol. Then, the gauge moves to
the natural gas level. After turning on the en-
gine, the gauge changes to the area corre-
sponding to the operating mode at that time.
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. 184