2012 Seat Mii air condition

104Transporting
Roof carrier system
Introduction
The vehicle roof has been designed to optimise aerodynamics. For this rea-
son, conventional roof carrier systems cannot be secured to the water
drains.
Given that the water drains have been incorporated into the roof for aerody-
namic reasons, only the SEAT approved basic supports and roof carrier sys-
tems can be used.
When the roof carrier system should be removed:
● When it is not being used.
● When the vehicle is being washed in a car wash.
● When the vehicle height exceeds the maximum height, for example, in a
garage.
Additional information and warnings:
● Light ⇒ page 84
● Transporting ⇒  page 97
● Ecological driving ⇒ page 144
● Wheels and tyres ⇒ page 210
● Accessories, parts replacement, repairs and modifications ⇒ page 222
WARNING
The risk of an accident is increased by transporting heavy or bulky loads
on the roof, which affects the vehicle's handling by shifting the centre of
gravity and increasing susceptibility to cross winds.
● Always secure loads correctly with suitable and undamaged attach-
ment rope or straps.
● Large, heavy, wide and flat loads negatively affect the vehicle aerody-
namics, centre of gravity and handling.
● Avoid brusque manoeuvres and sudden braking.
● Adjust your speed and driving style to visibility, road, traffic and
weather conditions.
CAUTION
● Always remove the roof carrier system from the roof before entering a car
wash.
● The height of your vehicle is changed by the installation of the roof carri-
er and the load secured on it. Compare the vehicle height with the passage
height, for example in underground car parks or entering garage doors.
● The roof antenna and the range of the rear lid should not be affected by
the roof carrier system and the load being transported.
● Take extra care not to let the rear lid strike the roof load when opening.
For the sake of the environment
The vehicle uses more fuel when the roof carrier system is fitted. 

117
Practical equipment
Electrical power socket* Introduction
Electrical equipment can be connected to the socket in the vehicle.
Connected equipment must be in perfect condition and show no signs of
faults.
Additional information and warnings:
● Cigarette lighter ⇒ page 115
● Accessories, parts replacement, repairs and modifications ⇒ page 222
WARNING
Improper use of the socket or electrical devices could lead to a fire and
cause serious injuries.
● Never leave children unsupervised in the vehicle. The socket and
equipment connected to it can be used when the ignition is switched on.
● Should a connected electrical device overheat, switch it off and un-
plug it immediately.
CAUTION
● To avoid damage to the vehicle's electrical system, never connect equip-
ment that generates electrical current, such as solar panels or battery charg-
ers, to the 12 Volt sockets in order to charge the vehicle's battery.
● Only use accessories with approved electromagnetic compatibility ac-
cording to current regulations. ●
To avoid damage due to voltage variations, switch off all appliances con-
nected to the 12 V socket before switching the ignition on or off and before
starting the engine.
● Never connect an appliance to the 12 Volt socket that consumes more
than the power indicated in watts. Exceeding the maximum power absorp-
tion could damage the vehicle's electrical system.
For the sake of the environment
Do not leave the engine running when the vehicle is at a standstill.
Note
Using electrical appliances with the engine stopped and the ignition switch-
ed on will drain the battery.
Note
Unshielded equipment can cause interference on the radio system equip-
ment and the vehicle's electrical system.
Note
If electrical equipment is used near an aerial, you may observe interference
in the reception of AM stations. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical Data

138Starting, changing gears, parking
A layer of salt on the discs and brake pads will reduce brake efficiency and
increase braking distance. If you drive for a prolonged period on salted
roads without braking then brake carefully several times to eliminate the
layer of salt on the brakes ⇒ 
.
If the vehicle remains parked for considerable lengths of time, is used little,
or if the brakes are not used, there may be corrosion on the brake discs and
a build-up of dirt on the brake pads. If the brakes are not used frequently, or
if rust has formed on the discs, SEAT recommends cleaning the pads and
discs by braking firmly a few times at a moderately high speed. Only do this
without endangering vehicles behind you or any other road users ⇒ 
.
Faults in the brake system
During braking, if you notice that the vehicle does not react as usual (that
the braking distance has increased suddenly) it may be possible that there
is a fault in the braking system. This is indicated by the warning lamp .
Take the vehicle to a Specialised workshop immediately and have the fault
repaired. Drive at a moderate speed and be prepared to use more pressure
on the brake pedal, and allow for longer braking distances.
Brake servo
The brake servo only operates when the engine is running and the pressure
applied by the driver on the brake pedal increases.
If the brake servo does not operate or the vehicle must be towed, then the
brake pedal will have to be pressed with more force given that the braking
distance will be increased when the brake servo does not operate ⇒ 
.
WARNING
New brake pads do not brake to full efficiency.
● For the first 320 km (200 miles), new brake pads have not yet reached
their maximum braking capacity, and need to be “run in” first. For this, to
compensate for reduced braking efficiency the brake pedal will have to
be pressed with more force.
WARNING (Continued)
● To avoid losing control of the vehicle and causing serious accidents,
always take great care when driving with new brake pads.
● When running in new brake pads, always respect the safety distances
between you and other vehicles and do not cause situations requiring ex-
treme braking performance.
WARNING
When brakes overheat, braking is less efficient and braking distances in-
crease.
● When driving on slopes, brakes can be overloaded and overheat
quickly.
● Reduce speed or reduce the gear when faced with steep and long
slopes. This allows you to use the engine braking effect and to reduce
the strain on the brake system.
● Non-standard or damaged front spoilers could restrict the airflow to
the brakes and cause them to overheat.
WARNING
Wet, frozen or salt-covered brakes take time to brake and this increases
braking distances.
● Test the brakes carefully.
● Dry the brakes, free them of ice and salt by braking gently several
times, when visibility, weather, and road and traffic conditions permit. 

145
Starting, changing gears, parking
Moderate use of additional electrical appliances
It is important to travel in comfort, but convenience systems should be used
in an ecological manner.
Some equipment, when connected, increase fuel consumption considera-
bly, for example:
● Air conditioning cooling system: If the air conditioning system is re-
quired to cool to significantly lower temperatures than the true outside tem-
perature, it will require a large quantity of energy from the engine. There-
fore, we recommend that the selected temperature for the vehicle is not too
different to the outside temperature. It is a good idea to open all the win-
dows of the vehicle before starting your journey, and to drive a short dis-
tance with all the windows open to allow the vehicle to cool down slightly.
Only then should you close all the windows and switch on the air condition-
ing system. Keep windows closed when travelling at high speeds. Driving
with the windows open increases fuel consumption.
● Switch off the seat heating when the seats have warmed up.
● Switch off the heated rear window when it is not moist or covered in ice.
Other factors which increase fuel consumption (examples):
● Fault in engine management.
● Driving on hills. Saving fuel while driving
Fig. 92 Fuel consump-
tion in litres per 100 km
at 2 different outside
temperatures
By adopting an economical driving style and anticipating the traffic situa-
tion ahead, you can easily reduce fuel consumption by 10-15%.
A vehicle uses most fuel when accelerating. By anticipating the traffic situa-
tion ahead, you will brake and therefore accelerate less. Wherever possible,
let the vehicle roll slowly to a stop, for instance when you can see that the
next traffic lights are red.
Avoid short journeys
Fuel consumption is much higher when the engine is cold, immediately af-
ter it has been started. It takes a few kilometres of driving for the engine to
warm up and to normalise consumption.
The engine and catalytic converter need to reach their proper working tem-
perature in order to minimise fuel consumption and emissions. The ambient
temperature has a decisive influence.
Fig. 92 shows the difference in consumption for the same journey at +20 °C
(+68 °F) and at -10 °C (+14 °F). 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical Data

152Driver assistance systems
Cruise control* (Cruise control system - CCS)
Introduction
The cruise control system (CCS) is able to individually maintain the set
speed when driving forwards from approx. 20 km/h (12 mph).
The CCS only slows down by reducing the accelerator but not by braking
⇒ 
.
Additional information and warnings:
● Changing gear ⇒ page 124
● Accessories, parts replacement, repairs and modifications ⇒ page 222
WARNING
Use of the cruise control could cause accidents and severe injuries if it is
not possible to drive at a constant speed maintaining the safety distance.
● Do not use the cruise control in heavy traffic, if the distance from the
vehicle in front is insufficient, on steep roads, with several bends or in
slippery circumstances (snow, ice, rain or loose gravel), or on flooded
roads.
● Never use the CCS when driving off-road or on unpaved roads.
● Always adapt your speed and the distance to the vehicles ahead in
line with visibility, weather conditions, the condition of the road and the
traffic situation.
● To avoid unexpected operation of the cruise control system, turn it off
every time you finish using it.
● It is dangerous to use a set speed which is too high for the prevailing
road, traffic or weather conditions.
● When travelling down hills, the CCS cannot maintain a constant
speed. The vehicle tends to accelerate under its own weight. Select a
lower gear or use the brake pedal to slow the vehicle.
 Control lamp
lights upPossible cause
This cruise control system maintains the set speed of
the vehicle.
Several warning and control lamps light up for a few seconds when the igni-
tion is switched on while a test of the function is being carried out. They will
switch off after a few seconds.
WARNING
If the warning lamps are ignored, the vehicle may stall in traffic, or may
cause accidents and severe injuries.
● Never ignore the warning lamps.
CAUTION
Failure to heed the warning lamps when they appear may result in faults in
the vehicle. 

155
Driver assistance systems
Safety Assist* (City Safety Assist function) Introduction
The City Safety Assist function covers driving situations at a distance of
about 10 metres in front of the vehicle, in a speed range of approximately
5-30 km/h (3-19 mph).
When the system detects a possible collision with a vehicle in front, the ve-
hicle prepares for a possible emergency braking ⇒ 
.
If the driver does not react to an imminent collision, the system can auto-
matically brake the vehicle in order to reduce speed faced with a possible
collision. The system can help to reduce the consequences of an accident.
If the City Safety Assist function determines that the driver braked insuffi-
ciently faced with an imminent collision, the system can increase the brake
force in order to reduce speed. The system can help to reduce the conse-
quences of an accident.
Additional information and warnings:
● Exterior detail ⇒ page 6
● Centre console, lower section ⇒ page 12
● Instrument panel ⇒ page 15
● Accessories, parts replacement, repairs and modifications ⇒ page 222
WARNING
The intelligent technology in the City Safety Assist system cannot change
the limits imposed by the laws of physics and by the system itself. The
increased comfort offered by the City Safety Assist system should never
prompt you to take risks. The driver always assumes the responsibility of
braking in time.
● The City Safety Assist function can not individually prevent accidents,
nor serious injury.
● The City Safety Assist system may carry out unwanted brake interven-
tions in complex driving situations i.e. when a vehicle crosses at a short
distance.
WARNING
Including the role of the City Safety Assist system in driving conduct may
cause accidents and serious injury. The system is not a replacement for
driver awareness.
● Always adapt your speed and the distance to the vehicles ahead in
line with visibility, weather conditions, the condition of the road and the
traffic situation.
● The City Safety Assist function does not react to people, animals or
vehicles that cross or move in the opposite direction in the same lane.
● If after switching on the City Safety Assist function the vehicle begins
to move, slow the vehicle with the foot brake.
CAUTION
If you suspect that the laser sensor of the City Safety Assist function is dam-
aged, switch off the City Safety Assist function. This will avoid additional
damage.
● Any reparation of the laser sensor requires specialist knowledge. SEAT
recommends visiting a Technical Service. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical Data

160Driver assistance systems
Malfunction in the laser sensor
If the laser sensor operation is impaired, for example due to heavy rain,
spray, snow or dirt, the City Safety Assist system function is temporarily
switched off. On the instrument panel display the control lamp  flashes.
When the fault in the laser sensor has been rectified, the City Safety Assist
system function automatically becomes available. 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 City Safety Assist system is switched off or there is a fault
⇒ page 156.
● If the laser sensor is dirty, covered or overheated ⇒ page 157.
● In the event of snow, heavy rain or dense fog.
● If there are vehicles in front.
● Vehicles changing lanes.
● Vehicles moving in the opposite direction in the same lane.
● Very dirty vehicles with a low degree of reflection.
● Presence of thick dust. 
Hill hold
Introduction
Additional information and warnings:
● SEAT information system ⇒ page 22
● Braking, stopping and parking ⇒ page 134 ●
Vehicle battery ⇒ page 193
● Wheels and tyres ⇒ page 210
● Accessories, parts replacement, repairs and modifications ⇒ page 222
● Hill hold ⇒ page 273
WARNING
The smart technology included in the hill hold cannot change the laws of
physics. Do not let the extra convenience afforded by the hill hold tempt
you into taking any risks when driving.
● Any accidental movement of the vehicle could result in serious injury.
● The hill hold is not a replacement for driver awareness.
● Adjust your speed and driving style to visibility, weather, road and
traffic conditions.
● The hill hold cannot always keep the vehicle at a standstill on a slope
or brake sufficiently when travelling downhill (e.g. on slippery or frozen
surfaces).

Warning lamps
lights upPossible causeSolution
The Start-Stop system is ena-
bled.

The Start-Stop system is ena-
bled but the engine cannot be
automatically stopped.Contact a Specialised
workshop.

The Start-Stop system cannot
start the engine.Start the engine by hand
using the vehicle's key
⇒ page 120.
There is a fault in the alternator.⇒ page 193 

164Air control
Air control
Heating, Ventilation and Air conditioning
system Introduction
Dust and pollen filter
The dust and pollen filter with its activated charcoal cartridge serves as a
barrier against impurities in the interior ambient air.
For the air conditioner to work with maximum efficiency, the dust and pollen
filter must be replaced at the intervals specified in the Maintenance Pro-
gramme.
If the filter loses efficiency prematurely due to use in areas with very high
levels of air pollution, the filter must be changed more frequently than sta-
ted in the Service Schedule.
Additional information and warnings:
● SEAT information system ⇒  page 22
● Windscreen wash system ⇒  page 91
● Caring for and cleaning the vehicle exterior ⇒ page 197
WARNING
Reduced visibility through the windows increases the risk of serious acci-
dents.
● Ensure that all windows are free of ice and snow and that they are not
fogged up preventing a clear view of everything outside.
WARNING (Continued)
● The maximum heat output required to defrost windows as quickly as
possible is only available when the engine has reached its normal run-
ning temperature. Only drive when you have good visibility.
● Always ensure that you use the heating system, ventilation, air condi-
tioner and the heated rear window to maintain good visibility.
● Never leave the air recirculation on for a long period of time. If the
cooling system mode is switched off and air recirculation mode switched
on, the windows can mist over very quickly, considerably limiting visibili-
ty.
● Switch air recirculation mode off when it is not required.
WARNING
Stuffy or used air will increase fatigue and reduce driver concentration
possibly resulting in a serious accident.
● Never leave the air fan turned off or use the air recirculation for long
periods of time; the air inside the interior will not be refreshed.
CAUTION
● Switch the air conditioner off if you think it may be broken. This will
avoid additional damage. Have the air conditioner checked by a Specialised
workshop.
● Repairs to the climate air conditioner specialist knowledge and special
tools. SEAT recommends visiting a Technical Service. 