Seat Mii 2017 Owner's manual

Driver assistance systems
Switch off the City Safety Assist function in
the f o
l
lowing situations
Switching off the City Safety Assist function is
recommended in the following situations
››› :
● While the vehicle is being towed.
● If the vehicle has been taken to an auto-
m atic
c

ar wash.
● If the vehicle is above a test bed.
● If the laser sensor is faulty.
● After the laser sensor has been involved in
a col
lision.
● When driving off road (overhanging branch-
es).
● If o

bjects are protruding above the bonnet,
e.g. a loa
d carried on the roof that signifi-
cantly protrudes over the front.
● If the windscreen is damaged in the laser
sensor are
a. WARNING
Failure to switch off the City Safety Assist
fu nction in the abo

ve situations may result in
accidents and serious injury.
● Switch off the City Safety Assist function in
critica
l situations. Special driving situations
Fig. 156
A: Vehicle on a bend. B: Motorcyclist
driv in
g ahe

ad out of range of the laser sen-
sor. Fig. 157
Other vehicles changing lanes The City Safety Assist function is limited by
the l
a
w

s of physics and by the nature of the
system itself. For this reason, this may pro-
duce reactions from the City Safety Assist
system in certain circumstances that are late
or unexpected by the driver. For this reason,
always pay due attention and if necessary, in-
tervene.
For example, the following driving situations
require special attention:
Driving through a bend
When entering or leaving a “long” bend, the
vehicle may decelerate when the laser sensor
detects a vehicle travelling in the opposite
lane ››› Fig. 156 A. To interrupt deceleration
you can accelerate, turn the steering wheel or
press the clutch.
Narrow vehicles in front
The laser sensor will only detect narrow vehi-
cles in front if they are in the sensor's detec-
tion zone ››› Fig. 156 B. This applies especial-
ly to narrow vehicles such as motorbikes.
Other vehicles changing lanes
Vehicles moving into your lane in close prox-
imity can cause unexpected braking from the
City Safety Assist system ›››
Fig. 157. To inter-
rupt deceleration you can accelerate, turn the
steering wheel or press the clutch. »
159
Technical data
Advice
Operation
Emergencies
Safety

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

Driver assistance systems
It lights up
The Start-Stop sys-
tem is enabled but
the engine cannot
be automatically
stopped.
Contact a specialised workshop.

It lights up
The Start-Stop sys-
tem cannot start the
engine.Start the engine by hand using
the vehicle's key
››› page 133.
There is a fault in the
alternator.››› page 196 
Flashes
The Start-Stop sys-
tem is not available.Contact a specialised workshop.
Some warning and control lamps will light up
briefly
when the ignition i
s

switched on to
check certain functions. They will switch off
after a few seconds. WARNING
Observe the safety warnings ›››
in On the
ins trument
panel on page 26. Start-Stop system
Fig. 158
At the top of the centre console:
St ar
t

-Stop system button. With the Start-Stop system enabled, the en-
gine i
s
aut

omatically stopped when the vehi-
cle is at a standstill. It will start again auto-
matically as required.
This function remains enabled while the igni-
tion is switched on. The instrument panel dis-
play shows information on the current status
››› page 160.
Disconnect the Start-Stop system by hand
whenever crossing water.
Vehicles with a manual gearbox
● When the vehicle is stopped, put it into
neutral and r
elease the clutch pedal. The en-
gine will stop.
● To restart, simply engage the clutch. Vehicles with an automatic gearbox
●
When the vehicle is at a standstill, depress
the brake or k
eep it pressed down. The en-
gine switches off.
● The engine will start again as soon as you
rele
ase the brake pedal.
● With the selector lever set to position N,
the engine wi
ll not start until a range of gears
is selected or the accelerator pedal is de-
pressed.
Important conditions for the engine to stop
automatically
● The driver's seat belt must be fastened.
● The driver door must be closed.
● The bonnet must be closed.
● The engine must have reached a minimum
temperat
ure.
● The vehicle must have moved since the last
time the engine wa
s stopped.
● The vehicle's battery must be sufficiently
char
ged.
● The battery temperature must not be too
low or too high.
● The

vehicle must not be on a very steep
slope. »
161
Technical data
Advice
Operation
Emergencies
Safety

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

Towing bracket device
Towing bracket device
Driv in
g w
ith a trailer
Information on driving with a trailer The vehicle is
not certified f
or trailer cou-
pling. The vehicle is not factory-equipped
with a towing bracket, nor is it possible to ret-
rofit it. WARNING
Installing a towing bracket on the vehicle
ma y

cause accidents and serious injuries
while operating the vehicle.
● Never install a towing bracket on the vehi-
cle.
● The tr

ailer may be released from the vehicle
when the vehic
le is moving. CAUTION
Any type of towing bracket installed on the
vehic l

e can cause serious and costly damage
that are not covered under the SEAT guaran-
tee. 163
Technical data
Advice
Operation
Emergencies
Safety

Advice
Advice
C ar
e and m
aintenance
Accessories, replacement of
parts and modifications Introduction WARNING
The use of spare parts and accessories, or in-
corr ectly

performed modifications or repairs
may result in damage to the vehicle, acci-
dents and serious injury.
● SEAT strongly recommends you to only use
SEAT ap
proved accessories and SEAT ®
origi-
nal spare parts. These parts and accessories
have been specially tested by SEAT for suita-
bility, reliability and safety.
● Have any repairs or modifications carried
out at a s
pecialised workshop. These work-
shops have the necessary tools, diagnostics
equipment, repair information and qualified
personnel.
● Only mount parts with the same specifica-
tions a
s the parts fitted at factory.
● Never mount, fasten or fit objects such as
drink hol
ders or telephone cradles over the
covers of the airbag modules or within their
deployment zones. ●
Only u

se wheels and tyre combinations
which have been approved by SEAT for your
vehicle type. Accessories and spare parts
SEAT recommends you consult an Official
Serv
ic

e before purchasing accessories and
spare parts or consumables. For example,
when fitting accessories at a later date, or
when replacing a component. A SEAT Official
Service will advise you as to the legal require-
ments and manufacturer's recommendations
regarding accessories, spare parts and other
components.
SEAT recommend you use only approved
SEAT accessories and genuine SEAT spare
parts ®
. These parts and accessories have
been specially tested by SEAT for suitability,
reliability and safety. In addition, SEAT tech-
nical services will guarantee that assembly is
performed professionally.
Although we continually monitor the market,
SEAT cannot guarantee that products not ap-
proved by SEAT are reliable, safe or suitable
for the vehicle. Therefore, SEAT cannot accept
liability, even in those cases authorised by
an officially recognised technical inspection
office or other official body.
Any retro-fitted equipment which has a direct
effect on vehicle control must be approved by SEAT for use in your vehicle and bear the
e
mark (the E

uropean Union's authorisation
symbol). This includes cruise control systems
or electronically controlled suspension.
If any additional electrical devices are fitted
which do not serve to control the vehicle it-
self, these must bear the  mark (European
Union manufacturer conformity declaration).
This includes refrigerator boxes, laptops or
ventilator fans. WARNING
Unprofessional repairs or modifications to
the v ehic

le may affect the performance of the
airbags, and may cause operating faults or fa-
tal accidents.
● Never mount, fasten or fit objects such as
drink hol
ders or telephone cradles over or
next to the covers of the airbag modules or
within their deployment zones.
● Objects placed over the airbag covers, or
within their deplo
yment zones, could lead to
serious injury or loss of life if the airbags are
triggered. Service fluids and components
All vehicle fluids and consumables
, suc
h a
s
notched belts, tyres, coolant fluids, engine
oils, spark plugs and batteries are continual-
ly being developed. Therefore all fluids and
164

Care and maintenance
consumables should be changed at a speci-
ali sed w
ork
shop. Technical services are per-
manently informed of any modifications. WARNING
The incorrect use or handling of fluids or con-
sum ab

les may result in accident, serious in-
jury, burns or intoxication.
● Therefore, fluids must always be stored
closed in their origin
al container.
● Never store fluids in empty food containers
or bottles
as other people may accidentally
drink the fluid.
● Keep all fluids and consumables out of
reac
h of children.
● Read and observe the information and
warning
s given on the fluid containers.
● Only work in the open air or in well-ventila-
ted z
ones, when using products which give
off harmful vapours.
● Never use fuel, turpentine, engine oil, ace-
tone or any
other volatile liquid in the main-
tenance of the vehicle. These are toxic and
highly flammable. They could lead to fire or
explosions! CAUTION
● Only u

se appropriate fluids. Do not confuse
fluids as this can cause serious malfunctions
or engine damage.
● Accessories and other components moun-
ted in front
of the air inlet reduce the cooling effect of the coolant. If the engine is running
under gr
e

at strain in high outside tempera-
tures, it could overheat. For the sake of the environment
Leaking fluids could pollute the environment.
C o l

lect any spilt fluids in suitable containers
and dispose of them in accordance with legis-
lation and with respect for the environment. Repairs and technical changes
When performing repairs and technical mod-
ific
ation
s,

SEAT's directives must be ob-
served! ››› Unauthorised modifications to the electronic
c
omponents
or sof

tware in the vehicle may
cause malfunctions. Due to the way the elec-
tronic components are linked together in net-
works, other indirect systems may be affec-
ted by the faults. This may significantly affect
the vehicle's performance, increase compo-
nent wear and could mean that the vehicle
registration documents are no longer valid.
Your SEAT Official Service cannot be held lia-
ble for any damage caused by technical mod-
ifications or repairs performed incorrectly.
The SEAT Official Service does not accept lia-
bility for damage resulting from technical
modifications or repairs performed incorrect- ly; neither is the SEAT warranty valid in these
case

s.
SEAT recommends you have any technical
modifications or repairs performed at a SEAT
Official Service and that you use genuine
SEAT spare parts ®
.
Vehicles with special accessories and equip-
ment
The manufacturers of additional equipment
guarantee that the equipment complies with
applicable laws and regulations with respect
to the environment, in particular Directives
2000/53/CE and 2003/11/CE. The first direc-
tive governs the disposal of end-of-life vehi-
cles while the second refers to the restric-
tions on the marketing and use of certain
dangerous substances and preparations.
The vehicle owner should keep the documen-
tation for the additional equipment safely
and hand it over to the scrap yard at the end
of the vehicle's service life. This ensures that
any additional equipment mounted in end-of-
life vehicles is correctly disposed of with re-
spect for the environment. WARNING
Repairs or modifications which are not per-
formed c orr

ectly may result in damage or er-
rors in the vehicle operation, affecting the ef-
fectiveness of the driver assist systems. This
could result in serious accident. » 165
Technical data
Advice
Operation
Emergencies
Safety

Advice
●
All
repairs and modifications to the vehicle
should only be performed by a specialised
workshop. Repairs and malfunctions in the air-
bag sy
s

tem When performing repairs and technical mod-
ification
s,

SEAT's directives must be ob-
served! ››› Modifications and repairs to the front bump-
er
, door
s, fr

ont seats, and repairs to the roof
or chassis should only be carried out in a
specialised workshop. These components
may contain parts or sensors belonging to
the airbag system.
If work is carried out on the airbag system or
parts have to be removed and fitted on the
system when performing other repair work,
parts of the airbag system may be damaged.
The consequence may be that, in the event of
an accident, the airbag inflates incorrectly or
does not inflate at all.
So that the effectiveness of the airbag is not
reduced and that removed parts do not cause
any injuries or environmental pollution, regu-
lations must be observed. These require-
ments are known to specialised workshops.
Modifications to the vehicle suspension may
affect the operation of the airbag system in
the event of collision. For example, if wheel and tyre combinations not approved by SEAT
are used, or if

the vehicle height is lowered,
the suspension is stiffened or the suspension
springs, telescopic arms, dampers, etc., are
modified, the results received by the airbag
sensors and sent to the control unit may not
be accurate. For example, some modifica-
tions to the suspension could increase the
force measured by the sensors and result in
the triggering of the airbag systems in colli-
sions. Under normal conditions, the meas-
ured values would be lower and the airbag
would not have been triggered. Other modifi-
cations may reduce the forces measured by
the sensors and prevent the airbags from be-
ing triggered when they should. WARNING
Repairs or modifications which are not per-
formed c orr

ectly may result in damage or er-
rors in the vehicle operation, affecting the ef-
fectiveness of the airbag systems. This could
result in serious or fatal accidents.
● All repairs and modifications to the vehicle
should on
ly be performed by a specialised
workshop.
● Airbag modules must never be repaired: if
damag
ed, they must be replaced.
● Never fit recycled or reused airbag compo-
nents in
your vehicle. WARNING
Modifications to the vehicle suspension, in-
cludin g the u

se of unauthorised wheel and
tyre combinations, may affect the perform-
ance of the airbags and increase the risk of
serious or fatal injury in the event of acci-
dent.
● Never fit suspension components which are
not identica
l to the original parts in the vehi-
cle.
● Never use wheel and tyre combinations not
appro
ved by SEAT. Retrofitting of mobile phones
An exterior aerial is required for the use of
tw
o-w
a

y radios in the vehicle.
The retro-fitting of electrical or electronic ap-
pliances in the vehicle is subject to their ap-
proval for use in your vehicle. Under certain
circumstances, this could mean that your ve-
hicle registration documents are no longer
valid.
SEAT has approved your vehicle for use with
two-way radios providing the following condi-
tions are observed:
● The exterior aerial must be mounted pro-
fes
sionally.
● The maximum transmitting power is 10
watts.
166

Care and maintenance
The optimal reach of the equipment is only
ac hiev
ed w
ith an external aerial.
Check first with a specialised workshop that
understands the technical possibilities of in-
stallation if you wish to use a two-way radio
with a transmitting power of over 10 watts.
SEAT recommends taking your car in for tech-
nical service.
All legal requirements, together with the in-
structions for the use of two-way radios must
be observed. WARNING
If the two-way radio is not securely fastened
in pos ition, it

could be sent flying around the
vehicle in the event of sharp braking, sudden
manoeuvres or accident, causing injury.
● While driving, two-way radios must be se-
curely
fastened in position, outside the air-
bags deployment zones, or safely stowed
away. WARNING
When using a two-way radio without a con-
nection to an e xt

erior aerial, the maximum
permitted levels of electromagnetic radiation
may be exceeded. This is also the case if the
aerial has not been correctly installed.
● You should only use a two-way radio inside
the vehic
le if it has first been correctly con-
nected to an exterior aerial. Information stored by the control
u
nit
s Your vehicle is fitted at the factory with a ser-
ies
of

electronic control units responsible for
the engine and gearbox management. In ad-
dition, the control units supervise the per-
formance of the exhaust gas system and the
airbag systems.
Therefore, while the vehicle is being driven,
these electronic control units are continuous-
ly analysing the vehicle data. In the event of
faults or deviations from the theoretical val-
ues, only this data is stored. Normally, the
warning lamps on the instrument panel light
up in the event of faults.
This data can only be read and analysed us-
ing special equipment.
The storing of the data allows specialised
workshops to detect and repair faults. Stored
data may include:
● Data relating to the engine or the gearbox
● Speed
● Direction of travel
● Braking force
● Detection of seat belt
The v ehic

le control units never record conver-
sations held by passengers in the vehicle.
In vehicles equipped with an emergency call
function via the mobile phone or other appli- ances connected in the vehicle, it is possible
to send the v

ehicle position. If the control
unit records an accident with airbag activa-
tion, the system may automatically send a
signal. This will depend on the network oper-
ator. Normally, transmission is only possible
in areas with good coverage.
Event Data Recorder
The vehicle is not fitted with an event data re-
corder.
An event data recorder temporarily stores the
vehicle information. Therefore, in the event of
an accident, it is possible to obtain detailed
information about how the accident occur-
red. Vehicles with airbag systems can store
data relating to impact speed, seat belt sta-
tus, seat positions and airbag activation
times may be stored, etc. The volume of data
depends on the manufacturer.
Event data recorders can only be mounted
with authorisation from the vehicle owner
and, in some countries, they are governed by
local legislation.
Reprogramming control units
On the whole, all the data required for the
component management is stored in the con-
trol units. The programming of certain con-
venience functions, such as the turn signals,
individual door opening and instructions on
the display can be modified using special »
167
Technical data
Advice
Operation
Emergencies
Safety

Advice
equipment at the workshop. If the comfort
f u
nction
s are reprogrammed, the information
and Instruction Manual descriptions will not
coincide with the modified functions. There-
fore, SEAT recommends that any modifica-
tions be recorded in the section “Other work-
shop notes” in the Maintenance Programme.
The SEAT Official Service must have a record
of any modification to the programming.
Reading the vehicle fault memory
There is a diagnostics connector in the vehi-
cle interior for reading the vehicle fault mem-
ory. The fault memory documents errors and
deviations from the theoretical values of the
electronic control units.
The diagnostics connector is in the driver
side footwell area, next to the lever for open-
ing the bonnet, below a cover.
The fault memory should only be read and re-
set by a specialised workshop.
Using a mobile telephone in a vehicle
without c
onnection to an exterior aer-
ial Mobile telephones transmit and receive radio
w
av
e

s also called high-frequency energy,
both when in use and when on stand-by. Sci-
entific studies state that radio waves exceed-
ing certain values may be harmful to the hu- man body. International committees and au-
thorities h

ave established limits and direc-
tives in order to ensure electromagnetic radi-
ation from mobile phones remains within cer-
tain limits that do not endanger health. Nev-
ertheless, there is no conclusive scientific
evidence that wireless telephones are totally
safe.
That is why some experts recommend moder-
ate use of the mobile telephone, and the ap-
pliance of measures to reduce radiation on
the human body.
When a mobile phone not connected to an
exterior aerial is used inside the vehicle, the
electromagnetic radiation may be greater
than if the mobile phone were connected to a
built-in aerial or to another exterior aerial.
If the vehicle is fitted with a suitable hands-
free device that allows the employment of
numerous additional mobile telephone func-
tions with compatible Bluetooth technolo-
gy ®
, it will comply with the legislation in
many countries which only permits the use of
mobile phones inside vehicles using a
hands-free device.
Mobile telephones must be placed in a suita-
ble telephone support or stored safely in the
vehicle. If a support is used for the tele-
phone, it must be securely fastened to the
base plate. The mobile will be secure on the
instrument panel and always within reach of
the driver only by following these procedures. Mobile telephone connection with an exter-
nal aeri
al is carried out subject to the hands-
free device, via the telephone support or by
the Bluetooth ®
connections present in the
mobile telephone and the vehicle.
If the mobile phone is connected to an aerial
incorporated into the vehicle or an exterior
aerial connected to the vehicle, it will help re-
duce the electromagnetic radiation transmit-
ted and the risk to human health. It will also
improve the quality of the connection.
If the phone is used inside the vehicle with-
out the hands-free system, it will not be se-
curely fastened and will not be connected to
the exterior aerial of the vehicle telephone.
Nor will the telephone charge if it is not on
the support. In addition, some calls may
break off and the quality of the connection
will be affected.
Mobile telephones should only be used in-
side the vehicle if they are connected to a
hands-free system. SEAT recommends using
an external aerial should you wish to use a
mobile telephone inside the vehicle.
Bluetooth ®
is a registered trademark of Blue-
tooth ®
SIG, Inc. WARNING
If the mobile phone is not securely fastened
in pos ition, it

could be sent flying around the
vehicle in the event of sharp braking, sudden
manoeuvres or accident, causing injury. 168