2017 Seat Mii fuel cap

The essentials
Fluid Level control Fi l
lin
g the fuel tank
Fuel tank capacity
Petrol enginesAround 35.0 l,
of which approximately 4.0 are the reserve.
Natural gas en-
gineNatural gas: approx. 11 kg; of whichmax. 1.5 kg reserve
Petrol: approx. 10 l; of which approx. 5 l reserve
Windscreen washer tank capacity
The washer bottle capacity is approximately 3 litres.Fuel
Fig. 39
Open fuel tank flap with tank cap in
the ho l
der Opening the fuel tank cap
The t
ank fl

ap is at the rear of the vehicle on
the right.
● Pull the rear zone of the fuel tank flap to
open.
● Unfold the key shaft if necessary
›››
 page 92.
● Insert the vehicle key into the lock cylinder
of the fuel
tank plug and turn the key in an
anticlockwise direction.
● Take out the fuel tank plug by turning it in
an anticlock
wise direction and rest it on the
upper part of the fuel tank flap ››› Fig. 39.
Closing the fuel tank cap
● Screw on the fuel tank filler plug in a clock-
wise dir
ection until it is fully inserted with a
click.
● Insert the vehicle key into the lock cylinder
of the fuel
tank plug, turn the key in a clock-
wise direction and remove the key.
● Press the tank flap until you hear it click in-
to pl
ace. The tank flap must be flush with the
body contour.

››› in Introduction on page 183
››› page 185 Oil
Fig. 40
Engine oil dipstick. Fig. 41
In the engine compartment: Engine
oi l
fi

ller cap. The level is measured using the dipstick loca-
t
ed in the en
gine c

ompartment.
The oil should leave a mark between zones A and
C . It should never exceed zone
A .
● Zone A : Do not add oil.
» 31

The essentials
Start the engine of the vehicle with the
fl at
b
attery and wait for 2 or 3 minutes
until the engine is running.
Removing the jump leads Before you remove the jump leads,
switch off the dipped beam headlights if
they are switched on.
Turn on the heater blower and heated
rear window in the vehicle with the flat
battery. This helps minimise voltage
peaks which are generated when the
leads are disconnected.
When the engine is running, disconnect
the leads in reverse order to the details
given above.
Make sure the battery clamps have sufficient
metal-to-metal contact with the battery termi-
nals.
If the engine fails to start after about 10 sec-
onds, switch off the starter and try again after
about 1 minute. WARNING
● Ple a

se note the safety warnings referring to
working in the engine compartment
›››  page 187.
● The battery providing assistance must have
the same v
oltage as the flat battery (12V) and
approximately the same capacity (see imprint 8.
9.
10.
11.
on battery). Failure to comply could result in
an exp
lo

sion.
● Never use jump leads when one of the bat-
teries
is frozen. Danger of explosion! Even af-
ter the battery has thawed, battery acid could
leak and cause chemical burns. If a battery
freezes, it should be replaced.
● Keep sparks, flames and lighted cigarettes
awa
y from batteries, danger of explosion.
Failure to comply could result in an explo-
sion.
● Observe the instructions provided by the
manufact
urer of the jump leads.
● Do not connect the negative cable from the
other vehic
le directly to the negative terminal
of the flat battery. The gas emitted from the
battery could be ignited by sparks. Danger of
explosion.
● Never attach the negative cable to fuel sys-
tem component
s or the brake lines in the oth-
er vehicle.
● The non-insulated parts of the battery
clamp
s must not be allowed to touch. The
jump lead attached to the positive battery
terminal must not touch metal parts of the ve-
hicle, this can cause a short circuit.
● Position the leads in such a way that they
cannot c
ome into contact with any moving
parts in the engine compartment.
● Do not lean on the batteries. This could re-
sult
in chemical burns. Note
The vehicles must not touch each other, oth-
erw i

se electricity could flow as soon as the
positive terminals are connected. Changing the wiper blades
Wind s

creen wipers service position Fig. 61
Wipers in service position. The wiper arms can be raised when the wip-
er
s
ar

e in service position ›››
Fig. 61.
● Close the bonnet ›››

 page 187.
● Switch the ignition on and off.
● Press the windscreen wiper lever down-
ward
s briefly ›››
Fig. 32 4 .
» 45

Operation
Parking When parking your vehicle, all legal require-
ments shou
l
d be observed.
To park the vehicle
Complete operations only in the sequence
given. ● Park the vehicle on a suitable surface ›››
.
● Press and hold the brake pedal until the ve-
hicl e c

omes to a standstill.
● Apply the handbrake firmly ›››
page 139.
● For an automatic gearbox, move the selec-
tor lev
er to position N.
● Switch off the engine and release the brake
pedal.
● R

emove the key from the ignition.
● If necessary, turn the steering wheel slight-
ly to loc
k the steering.
● With a manual gearbox, engage 1st gear on
flat gr
ound and slopes, or even reverse gear
on hills, and release the clutch pedal.
● Ensure that all passengers leave the vehi-
cle, e
specially children.
● When leaving the vehicle, take all keys with
you.
● Loc

k the vehicle. Additional information for steep slopes and
hill

s
Before switching off the engine, rotate the
steering wheel so that if the vehicle should
move, it will be held by the kerb.
● On slopes, turn the front wheels so that
they are ag
ainst the edge of the kerb.
● Uphill, turn the wheels towards the centre
of the ro
ad. WARNING
The components of the exhaust system reach
ver y

high temperatures. This could cause a
fire and considerable damage.
● Always park your vehicle so that no part of
the exhau
st system can come in contact with
flammable materials (such as wood,
leaves,dried grass, or spilled fuel). CAUTION
● Spec i

al care should be taken when parking
in areas with high kerbs or fixed barriers. Ob-
jects protruding from the ground may dam-
age the bumper or other parts of the vehicle
during manoeuvres. To avoid damage, stop
before the wheels touch the barrier or kerb.
● Special attention is required when driving
through entranc
es, over ramps, kerbs or oth-
er objects. The vehicle underbody, bumpers,
mudguards and running gear, and the engine
and exhaust system could be damaged as
you drive over these objects. Information on the brakes
For the first 200 to 300 km, the new brak
e
p
ads have not yet reached their maximum
braking capacity, and need to be “run in”
first ››› . The slightly reduced braking effect
can be c ompen

sated for by increasing pres-
sure on the brake pedal. While running in,
the full braking distance or emergency brak-
ing distance is larger then when the brake
pads have been run in. While running in,
avoid full power braking or situations requir-
ing braking performance. For example, in
heavy traffic.
The rate of wear of the brake pads depends
to a great extent on the conditions in which
the vehicle is used and the way the vehicle is
driven. If the vehicle is used frequently in city
traffic or for short trips or driven sport style,
visit a specialised workshop regularly, more
frequently than advised in the Maintenance
Programme, to have the brake pads checked.
If you drive with wet brakes, for example, af-
ter crossing areas of water, in heavy rainfall
or even after washing the car, the effect of
the brakes is lessened as the brake discs are
wet or even frozen (in winter). At higher
speed, “dry” the brakes as quickly as possi-
ble by braking gently several times. Only do
this without endangering vehicles behind
you or any other road users ››› .
A l ay

er of salt on the discs and brake pads
will reduce the effectiveness of the brakes
140

Operation
Catalytic converter The catalytic converter permits the subse-
quent tr
e
atment of the exhaust gases thus
reducing contaminating gas emissions. To
ensure a longer working life for the exhaust
system and catalytic converter in a petrol en-
gine:
● Always use unleaded petrol.
● Never run the fuel tank completely dry.
● Do not top up with too much engine oil
›››
page 189.
● Do not tow-start the vehicle; use the starter
cab l

es ›››
 page 43.
If you should notice misfiring, uneven run-
ning or loss of power when the car is moving,
reduce speed immediately. Have the car in-
spected by a specialised workshop. If this
happens, unburnt fuel can enter the exhaust
system and escape into the atmosphere. The
catalytic converter can also be damaged by
overheating. For the sake of the environment
Even when the emission control system is
work in

g perfectly, there may be a smell of
sulphur under certain conditions. This de-
pends on the sulphur content of the fuel
used. Driving tips
Driv in
g abr

oad In some countries, certain safety regulations
and requir
ements

are in force relating to ex-
haust gas emissions, which differ from the
technical characteristics of the vehicle. Be-
fore travelling abroad, SEAT recommends you
consult a technical service about the legal re-
quirements and the following points:
● Does the vehicle need technical modifica-
tions f

or driving abroad, for example, adjust-
ment of the headlamps?
● Does the vehicle have all the tools, diag-
nostic
s equipment and spare parts required
for inspections and repairs?
● Are there any SEAT dealers in the destina-
tion countr
y?
● For petrol vehicles: Is unleaded petrol avail-
able at
the right octane rating?
● For diesel engines: is diesel fuel available
with a low s
ulphur content?
● Are a suitable engine oil ( ›››

page 189) and
other engine fluids complying with SEAT
specifications available in the destination
country?
● Are special tyres required in the destination
countr
y? CAUTION
SEAT does not accept liability for any damage
to the v

ehicle due to the use of a lower quali-
ty fuel, an inadequate service or the non-
availability of genuine spare parts. Driving through flooded roadways
To prevent damage to the vehicle when driv-
ing thr
ough w

ater, for example, along a floo-
ded road, please observe the following:
● Check the depth of the water before enter-
ing the flooded z

one. The water should never
come above the lower edge of the bodywork
››› .
● Do not drive faster than a pedestrian.
● Do not stop in the water, use reverse gear
or sw it
c

h off the engine.
● Oncoming traffic will cause waves which
raise the l
evel of the water, making it difficult
to cross the water.
● Disconnect the Start-Stop system whenever
cro
ssing water. WARNING
When driving through water, mud, melted
sno w

, etc., please remember that due to
damp or frozen brake discs and shoes in win-
ter, the braking effect may be delayed, there-
fore the required braking distance is greater. 152

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

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
CAUTION
● Alw a
ys remove any fuel spilled anywhere
on the vehicle to avoid damage to the wheel
housing, the tyre and vehicle paintwork. 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. Refuelling with natural gas
Fig. 167
Tank flap open: gas filler mouth 1 ,
fi l
l

er mouth retainer 2Before r
efuelling, the engine and the igni-
tion, mo b

ile telephone and heating must be
switched off separately ››› .
It i
s

also essential to carefully read the in-
structions for the natural gas pump. The vehicle is equipped for refuelling only
with Compr

essed Natural Gas (CNG) ››› . Re-
f uel
lin
g with another type of natural gas is
not allowed, e.g. Liquefied Natural Gas (LNG)
or hydromethane.
Opening the fuel tank cap
The natural gas filler mouth is behind the fuel
tank cap, next to the petrol filler mouth.
● Unlock the vehicle with the key or with the
central
locking button  situated on the driv-
er door ››› page 97.
● Press on the rear area of the flap and open
it.
Ref

uelling
Problem: If the ambient temperature is very
high, the natural gas pump protection
against overheating disconnects this auto-
matically.
● Remove the plug from the gas filler mouth
›››
Fig. 167 1 .
● Connect the pump filling nozzle to the gas
fi l
l

er mouth.
● The fuel tank will be full when the p
ump
compressor automatically cuts the supply.
● If you wish to finish refuelling in advance,
pres
s the button on the pump to stop the
flow. Closing the fuel tank cap
●
Check that the gas filler mouth retainer 2 is not trapped with the filler nozzle. If neces-
s
ar
y

, place it in the filler mouth again.
● Insert the plug in the filler mouth.
● Close the tank flap. Make sure you hear it
click
into place. WARNING
Natural gas is a highly explosive, easily flam-
mab l

e substance. Incorrect handling of the
natural gas can cause accidents serious
burns and other injuries.
● Before refuelling with natural gas, the fill-
ing mouth mus
t be correctly engaged. If you
can smell gas, stop refuelling immediately. 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
● The fil lin

g nozzles of natural gas pumps
can differ in the way they are operated. If you
are unacquainted with the pump, it is advisa-
ble that a member of staff of the service sta-
tion performs the refuelling operation. 186

Checking and refilling levels
●
Noise s
heard when refuelling are normal
and do not indicate the presence of a fault in
the system.
● The vehicle natural gas system is prepared
both for ref
uelling with a small compressor
(slow refuel) and a large compressor (fast re-
fuel) in natural gas service stations. Bonnet
Work in

g in the engine compartment Read the additional information carefully
› ›
›

 page 10
Before working in the engine compartment,
make sure that the vehicle is parked on hori-
zontal and firm ground.
The engine compartment of the vehicle is a
hazardous area. Never work on the engine or
in the engine compartment if you are not fa-
miliar with the operations to be carried out,
the applicable safety standards and especial-
ly if you do not have the necessary instru-
ments, liquids and tools ››› ! If required,
h av
e an

y work carried out by a specialised
workshop. Negligent work can cause serious
injury. WARNING
If the vehicle moves unexpectedly, this could
cau se seriou

s injury. ●
Never w ork

under the vehicle if it has not
been immobilized. If you must work under-
neath the vehicle with the wheels in contact
with the ground then it should be parked on
flat ground, the wheels should be prevented
from moving and the key should be removed
from the ignition.
● If you have to work underneath the vehicle,
you mus
t use suitable stands additionally to
support the vehicle, there is a risk of acci-
dent!. The jack is not intended for this kind of
work and its failure could lead to severe inju-
ries.
● Disconnect the Start-Stop system. WARNING
The engine compartment is a dangerous area
cap ab

le of causing serious injury.
● For all type of work, always take the utmost
precaution
s, work carefully and note the gen-
eral safety standards in force. Never take per-
sonal risks.
● Never work on the engine or in the engine
compar
tment if you are not familiar with the
necessary operations. If you are not sure
about procedures then visit a specialised
workshop to carry out the necessary work.
Working incorrectly can cause serious inju-
ries.
● Never open the bonnet if you see steam or
cool
ant escaping from the engine compart-
ment. This may cause serious burns. Always
wait until you cannot see or hear the sound of steam or coolant coming from the engine
comp
ar

tment.
● Always allow the engine to cool down be-
fore openin
g the bonnet.
● Contact with hot elements of the engine
and the exhau
st system can cause burns.
● Once the engine has cooled, follow the in-
structions
below before opening the bonnet:
– Engage the handbrake and place the gear
selector lever in N or the gear stick in
neutral.
– Remove the key from the ignition.
– Keep children away from the engine com-
partment and never leave them unsuper-
vised.
● When the engine is warm or hot, the cool-
ing sys
tem is pressurised. Do not unscrew
the cap on the expansion tank when the en-
gine is hot. Otherwise, coolant may spray out
under pressure causing burns and serious in-
jury.
– After cooling, carefully and slowly un-
screw the cap anticlockwise, gently
pressing down on it.
– Always protect your face, hands and arms
from hot coolant and steam using a large,
thick cloth.
● When refilling liquids, avoid spilling them
on part
s of the engine and the exhaust sys-
tem. Spilled liquids could cause a fire. » 187
Technical data
Advice
Operation
Emergencies
Safety