2016 Seat Mii technical data

Airbag system
Airbag system
Brief intr
oduction
Intr
oduction Front airbags have been installed for both
driver and p
a

ssenger. The front airbags can
also protect the chest and head of driver and
passenger if the seats, seat belts head re-
straints and, for the driver, the steering
wheel are correctly adjusted and used. Air-
bags are considered as additional safety
equipment. An airbag cannot replace the
seat belt, which must be worn at all times,
even in front seats where front airbags have
been installed.
The airbag can protect vehicle occupants in
the event of an accidents, cushioning the
movement of the occupants in the direction
of the collision in frontal and side accidents.
Deployed airbags fill with a propellant gas.
This causes the airbag covers to break and
the airbags to deploy extremely quickly in
their entire deployment space within frac-
tions of a second. When an occupant with the
seat belt properly fastened puts pressure on
the inflated airbag, the propellant gas es-
capes to absorb the force of the impact and
slow the movement. This reduces the risk of
severe or fatal injuries. Airbag deployment
does not mean that other types of injury such as swelling, bruising and skin injuries can be
rul
ed out

. Upon deployment of the airbag,
friction can cause the generation of heat.
Airbags do not protect the arms or the lower
part of the body.
The most important factors for triggering the
airbag are the type of accident, the angle of
impact, the vehicle speed and the character-
istics of the object the vehicle hits. Therefore,
airbags are not triggered every time the vehi-
cle is visibly damaged.
The activation of the airbag system depends
on the magnitude of the deceleration of the
vehicle caused by a collision, which registers
through an electronic control unit. If the de-
celeration magnitude value is below the ref-
erence value programmed in the control unit,
the airbags will not deploy even though seri-
ous damage might be caused to the vehicle
as the result of an accident. Damage suffered
by the vehicle, reparation costs or absence of
damage suffered from the accident are not
indications of whether an airbag should have
been deployed. Due to the varying nature of
collision situations, it is impossible to define
a speed range of the vehicle and reference
values. For this reason, it is not possible to
cover all types of collisions and collision an-
gles resulting in the deployment of the air-
bag. Factors necessary for the airbag to be
deployed can be, the characteristics of the
object (hard or soft) against which the vehi- cle collides, the collision angle and the vehi-
cle s
peed.
Airbags act in conjunction with the three-
point seat belts in certain accident situa-
tions, when the vehicle deceleration rate is
severe enough to trigger the airbags. Airbags
only deploy once and only under certain cir-
cumstances. Seat belts remain present to of-
fer protection in situations where airbags are
not triggered or where they have already de-
ployed. For example, when a vehicle hits an-
other after an initial collision or is hit by an-
other vehicle. The airbag system is an integral part of the
car's passive safety system. The airbag sys-
tem can only work effectively when the vehi-
cle occupants are wearing their seat belts
correctly and have adjusted the head re-
straints properly  ››› page 48. WARNING
Never exclusively trust the airbag system as a
mean s

of protection.
● Even when triggered, airbag protection is
only aux
iliary.
● The airbags provide the best protection
when the seat belt
s are properly fastened,
thus reducing the risk of sustaining injuries
››› page 52, Why wear a seat belt? .» 59
Technical data
Advice
Operation
Emergencies
Safety

Airbag system
● He a
d r
estraints optimised for rear-end colli-
sion.
● Adjustable steering column.
● If necessary, anchor points for child seats
for the re
ar seats.
● Where applicable, mountings for the child
seat up
per retaining strap.
Situations in which the front and side air-
bags do not deploy:
● If the ignition is switched off during the col-
lision.
● In fr

ontal collisions, when the deceleration
meas
ured by the control unit is too low.
● In minor side collisions.
● In rear collisions.
● In the event of the vehicle overturning.
● When the impact speed is lower than the
refer
ence value set in the control unit.
There is a fault in the system if the control
lamp :
● does not light up when the ignition is
switc
hed on,
● turns off after 4 seconds after the ignition
is sw
itched on
● turns off and then lights up again after the
ignition is sw
itched on
● illuminates or flashes while the vehicle is
movin
g. WARNING
● The seat belt

s and airbags can only provide
maximum protection if the occupants are
seated correctly ››› page 48.
● If a fault has occurred in the airbag system,
have the sy
stem checked immediately by a
specialised workshop. Otherwise, during a
frontal collision the system might not trigger
correctly or may fail to trigger at all. Airbag activation
The airbags deploy extremely rapidly, within
thou
s
andths

of a second, to provide addi-
tional protection in the event of an accident.
A fine dust may develop when the airbag de-
ploys. This is normal and it is not an indica-
tion of fire in the vehicle.
The airbag system is only ready to function
when the ignition is on.
In special accidents instances, several air-
bags may activate at the same time.
In the event of minor head-on and side colli-
sions, rear-end collisions, overturning or roll-
over of the vehicle, airbags do not activate.
Activation factors
The conditions that lead to the airbag system
activating in each situation cannot be gener-
alised. Some factors play an important role,
such as the properties of the object the vehi- cle hits (hard/soft), angle of impact, vehicle
speed, etc

.
Deceleration trajectory is key for airbag acti-
vation.
The control unit analyses the collision trajec-
tory and activates the respective restraint
system.
If the deceleration rate is below the prede-
fined reference value in the control unit the
airbags will not be triggered, even though
the accident may cause extensive damage to
the car.
The following airbags are triggered in seri-
ous head-on collisions ● Driver airbag.
● Front passenger front airbag
The fol
lowing airbags are triggered in seri-
ous side-on collisions
● Front side airbag on the side of the acci-
dent.
● Re

ar side airbag on the side of the acci-
dent.
In an acc

ident with airbag activation:
● the interior lights switch on (if the interior
light swit
ch is in the courtesy light position);
● the hazard warning lights switch on;
● all doors are unlocked; »
61
Technical data
Advice
Operation
Emergencies
Safety

Airbag system
Deactivating airbags C ontr
o
l lamps Fig. 74
Control lamp for disabling the front
p a
s

senger front airbag on the dash panel 
It lights up on the combi-in-
strument
Fault in airbag sys-
tem and seat belt
tensioners.Have the system checked immedi-
ately by a specialised workshop.  
It lights up on the dash panel
Fault in the airbag
system.Have the system checked immedi-
ately by a specialised workshop.
Front passenger
front airbag disa-
bled.Check whether the airbag should
remain disabled.
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.
If the front passenger airbag is deactivated,
the lamp      does not re-
main lit, or if it is lit together with the control
lamp  on the dash panel, there may be a
fault in the airbag system ››› .
WARNING
In the event of a fault in the airbag system,
the airbag m a

y not trigger correctly, may fail
to trigger or may even trigger unexpectedly,
leading to severe or fatal injuries.
● Have the airbag system checked immedi-
ately b
y a specialised workshop.
● Never mount a child seat in the front pas-
senger se
at or remove the mounted child
seat! The front passenger front airbag may
deploy during an accident in spite of the
fault. CAUTION
Always pay attention to any lit control lamps
and to the c orr

esponding descriptions and in-
structions to avoid damage to the vehicle. Manual disabling and enabling of the
fr
ont
p

assenger front airbag with the
key switch Fig. 75
On front passenger side: Key switch
f or en
ab

ling and disabling the front passen-
ger front airbag. Read the additional information carefully
› ›
›

 page 15
Activating the front passenger front airbag
● Switch the ignition off.
● Open the door on the front passenger side.
● Unfold the vehicle key blade ›››
page 92.
● Using the vehicle key, turn the key switch to
ON ›››

Fig. 75.
● Close the door on the front passenger side.
● Check that, with the ignition switched on,
the contro
l lamp      on the
dash panel is not lit ››› page 63. »
63
Technical data
Advice
Operation
Emergencies
Safety

Transporting children safely
Important information regarding the
fr ont
p
assenger's airbag Read the additional information carefully
›› ›

 page 16.
Read and always observe the safety informa-
tion included in the following chapters: ● Safety distance with respect to the passen-
ger airbag ›

›› in Introduction on page 59.
● Objects between the passenger and the
pa s

senger side airbag ››› in Front airbags
on p ag
e 62
.
The passenger side front airbag, when ena-
bled, is a serious risk for a child that is facing
backward since the airbag can strike the seat
with such force that it can cause serious or
fatal injuries. Children up to 12 years old
should always travel on the rear seat.
Therefore we strongly recommend you to
transport children on the rear seats. This is
the safest location in the vehicle. Alternative-
ly, the front passenger airbag can be disa-
bled with a key-operated switch ›››
page 63.
When transporting children, use a child seat
suitable for the age and size of each child
››› page 67. WARNING
● If a c hi

ld seat is secured to the front pas-
senger seat, the risk to the child of sustain- ing critical or fatal injuries in the event of an
acc
ident

increases.
● An inflating front passenger airbag can
strike the r
ear-facing child seat and project it
with great force against the door, the roof or
the backrest.
● Never install a child seat facing backwards
on the front p
assenger seat unless the front
passenger front airbag has been disabled.
Risk of potentially fatal injuries to the child!
However, if it is necessary, in exceptional ca-
ses, to transport a child in the front passen-
ger seat, the front passenger front airbag
must always be disabled ››› page 63. If the
passenger seat has a height adjustment op-
tion, move it to the highest, most upright po-
sition. If you have a fixed seat, do not install
any child restraint system in this location.
● For those vehicles that do not include a key
lock sw
itch to deactivate the airbag, the vehi-
cle must be taken to a technical service.
● All vehicle occupants, especially children,
must
assume the proper sitting position and
be properly belted in while travelling.
● Never hold children or babies on your lap,
this c
an result in potentially fatal injuries to
the child!
● Never allow a child to be transported in a
vehicl
e without being properly secured, or to
stand up or kneel on a seat while travelling.
In an accident, the child could be flung
through the vehicle, causing possibly fatal in-
juries to themselves and to the other vehicle
occupants. ●
If c hi

ldren assume an improper sitting posi-
tion when the vehicle is moving, they expose
themselves to greater risk of injury in the
event of a sudden braking manoeuvre or in an
accident. This is particularly important if the
child is travelling on the front passenger seat
and the airbag system is triggered in an acci-
dent; as this could cause serious injury or
even death.
● A suitable child seat can protect your child!
● Never leave a child alone in the child seat
or inside the
vehicle because depending on
the season, very high temperatures may be
reached inside a parked vehicle, which could
be fatal.
● Children who are less than 1.5 metres tall
must
not wear a normal seat belt without a
child seat, as this could cause injuries to the
abdominal and neck areas during a sudden
braking manoeuvre or in an accident.
● Do not allow the seat belt to become twis-
ted and the seat
belt should be properly in
place ››› page 52.
● Only one child may occupy a child seat
›››

page 67.
● When a child seat is mounted in the rear
seats, the door c
hild-proof lock should be ac-
tivated ››› page 98. 65
Technical data
Advice
Operation
Emergencies
Safety

Transporting children safely
General information on transporting
c hi
l
dren in the vehicle Read the additional information carefully
›› ›

 page 17.
Legal regulations and provisions will always
take priority over the descriptions of this in-
struction manual. There are different regula-
tions and provisions for the use of child seats
and their mountings ( ››› table on page 67).
In some countries, for example, the use of
child seats on certain seats in the vehicle
may be forbidden.
The physical principles and the forces acting
on the vehicle in the event of a collision or
other type of accidents also apply to children
››› page 52. However, unlike adults and
youngsters, children do not have fully devel-
oped muscle and bone structures. In the
event of an accident, children are subject to a
greater risk than adults of sustaining severe
injuries.
Given that children's bodies are not yet fully
developed, child restraint systems must be
used that are especially adapted to their
height, weight and constitution. There are
laws in force in many countries that indicate the use of approved seat systems for trans-
portin
g b

abies and children.
Only used authorised, approved child seats
that are suitable for the vehicle. Always con-
sult with a SEAT dealership or a Specialised
workshop should you have any doubts.
Specific child seat regulations for each coun-
try (selection)
Child seats must comply with the ECE-R 44 1)
regulation. You can get additional informa-
tion by consulting your SEAT dealership or at
the internet address www.seat.es. Categorisation of child seats according to
ECE
-R 44
Weight cat-egoryWeight ofthe childAge
Group 0up to 10 kgup to approximately. 9 months
Group 0+up to 13 kgup to approximately.18 months
Group 19 to 18 kgapprox. 8 months to 3 1/ 2 years
Group 215 to 25 kgapprox. 3 to 7 years
Group 322 to 36 kgapprox. 6 to 12 years Not all children fit in the seat of their weight
gr
oup
. Nor do al

l seats adapt to the vehicle.
Therefore, always check whether the child fits
properly in the child seat and whether the
seat can be installed safely in the vehicle.
Child seats approved under the ECE-R 44 reg-
ulation are fitted with the corresponding ap-
proval symbol. The sign is an upper-case E in
a circle with the identification number below
it. 1)
ECE-R: Economic Comi
ssion for Europe Regulation.
67
Technical data
Advice
Operation
Emergencies
Safety

Transporting children safely
●
Chil dr
en must always be protected with an
approved child restraint system suited to
their height and weight. Use of the child seat on the rear seat
If a child seat is mounted on the rear seat,
ad
apt

the position of the front passenger
seat so that the child has enough space.
Therefore, adapt the front passenger seat to
the size of the child seat and the height of
the child. Ensure the passenger is in the cor-
rect position  ››› page 48.
Suitable child seats
The manufacturer must authorise the child
seat for use in the rear seats with side air-
bags.
Universal seats for children can be fitted in
the passenger seat, in groups 0, 0+, 1, 2 or 3
according to the ECE-R 44 regulation.
The rear seats are suitable for child seats
with the ISOFIX system specially designed
for this type of vehicle in accordance with
regulation ECE-R 44.
ISOFIX child seats approved for rear seats
ISOFIX child seats are divided into the follow-
ing certified categories: “universal”, “semi-
universal” or “specific categories for the ve-
hicle”. ●
If the ISOFIX c

hild seat is certified “univer-
sal”, it must be supported by the lower an-
chor points and the Top Tether retaining
strap.
● If the ISOFIX child seat is certified “semi-
univer
sal” or “specific categories for the ve-
hicle”, check that the child seat is certified
for the vehicle before employing it. The child
seat manufacturer supplies, in addition to
the ISOFIX child seat, a list of vehicles for
which the corresponding ISOFIX child seat
has been certified. If necessary, contact the
child seat manufacturer for an updated list of
vehicles.
69Technical data
Advice
Operation
Emergencies
Safety

Self-help
Location Fig. 77
In the luggage compartment: Raised
c arpet
. The vehicle tool kit, spare wheel, temporary
s
p
ar
e wheel and the tyre mobility set are
stored in the luggage compartment under the
carpeted floor panel ›››
Fig. 77.
● If necessary, remove the boot variable floor
›››
page 123.
● Raise the carpet at the recess (arrow)
›››
Fig. 77. Note
After use, return the jack to its initial position
us in

g the handle in order to securely store it
in the vehicle. Accessing the vehicle tool kit and tyre
mo
b
i

lity system in vehicles fitted with
the SEAT SOUND 7 speaker system
(with subwoofer)* ●
Open the boot hatch and lift the shelf.
● If necessary, remove the boot variable floor
›› ›

page 126.
● Lift up the carpet from the recess and re-
move it
from the luggage compartment.
● Disconnect the subwoofer’s speaker cable.
● Completely remove the hand-controlled
wheel fr om the c

entre of the subwoofer
speaker by turning it anti-clockwise.
● Take out the subwoofer, which is on top of
the tool
s and tyre mobility system.
● When finished, place the tools and system
back
in the same way and place as before to
ensure the speaker sits properly in its hous-
ing.
● Place the subwoofer in the direction of the
arrow and w
ith the word “FRONT” facing for-
ward.
● Reconnect the speaker cable and firmly ro-
tate the sec
uring wheel clockwise so that the
subwoofer is firmly in place. Components
Fig. 78
Components of the vehicle tool kit The vehicle tool kit depends on the vehicle
equipment
.
The f

ollowing is a description for
a vehicle with all options.
The individual elements of the vehicle tool
kit ››› Fig. 78
Screwdriver with hexagon socket in the
handle for screwing and unscrewing the
wheel bolts. The screwdriver bit is inter-
changeable. The screwdriver may be
found underneath the wheel spanner.
Adapter for anti-theft bolt. SEAT recom-
mend you carry the wheel bolt adapter in
the vehicle tool kit at all times. The code
number of the anti-theft wheel bolt is
stamped on the front of the adapter. In »
1 2
71
Technical data
Advice
Operation
Emergencies
Safety

Self-help
The Anti-puncture kit* (Tyre Mobility System)
w i
l
l reliably seal punctures caused by the
penetration of a foreign body of up to about
4 mm in diameter. Do not remove foreign ob-
jects, e.g. screws or nails, from the tyre.
After inserting the sealant residue in the tyre,
you must again check the tyre pressure about
10 minutes after starting the engine.
You should only use the tyre mobility set if
the vehicle is parked in a safe place, you are
familiar with the procedure and you have the
necessary tyre mobility set! Otherwise, you
should seek professional assistance.
The tyre sealant must not be used in the fol-
lowing cases:
● If the wheel rim has been damaged.
● In outside temperatures below -20 °C
(-4 °F).
● In the event of cuts or perforations in the
tyre gr
eater than 4 mm.
● If you have been driving with very low pres-
sure or a c
ompletely flat tyre.
● If the sealant bottle has passed its use by
date. WARNING
Using the tyre mobility system can be dan-
ger ou

s, especially when filling the tyre at the
roadside. Please observe the following rules
to minimise the risk of injury: ●
Stop the v

ehicle safely as soon as possible.
Park it at a safe distance from surrounding
traffic to fill the tyre.
● Ensure the ground on which you park is flat
and solid.
● Al

l passengers and particularly children
must
keep a safe distance from the work area.
● Turn on the hazard warning lights to warn
other roa
d users.
● Use the tyre mobility system only if you are
famili
ar with the necessary procedures. Oth-
erwise, you should seek professional assis-
tance.
● The tyre mobility set is intended for tempo-
rary
emergency use only until you can reach
the nearest specialised workshop.
● Replace the repaired tyre with the tyre mo-
bility
set as soon as possible.
● The sealant is a health hazard and must be
cle
aned immediately if it comes into contact
with the skin.
● Always keep the tyre mobility set out of the
reac
h of small children.
● Never use an equivalent jack, even if it has
been appro
ved for your vehicle.
● Always stop the engine, apply the hand-
brake l
ever firmly and engage gear if using a
manual gearbox, in order to reduce the risk of
vehicle involuntary movement. WARNING
A tyre filled with sealant does not have the
same per f

ormance properties as a conven-
tional tyre.
● Never drive faster than 80 km/h (50 mph).
● Avoid heavy acceleration, hard braking and
fas
t cornering.
● Drive for only 10 minutes at a maximum
speed of 80
km/h (50 mph) and then check
the tyre. For the sake of the environment
Dispose of used or expired sealant observing
any l

egal requirements. Note
● A new bottle of se

alant can be purchased at
SEAT dealerships.
● Take into account the separate instruction
manual
of the tyre mobility set* manufactur-
er. 73
Technical data
Advice
Operation
Emergencies
Safety