2012 Seat Mii brake sensor

8Exterior views
Rear view
Fig. 3 Detail of the rear of the vehicle
Legend for the Fig. 3: Roof aerial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Bulb for high-level brake lights
Rear window
– Heated rear window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Rear window wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Rear lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84, 264
1
23
456
Handle with button for opening the rear lid
. . . . . . . . . . . . . . . . .40
Registration plate light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Rear number plate holder
Sensors for the parking distance warning system . . . . . . . . . . .14978910

97
Transporting
Transporting
Driving tips Introduction
Always transport heavy loads in the luggage compartment and place the
seat backs in a vertical position. Never overload the vehicle. Both the carry-
ing capacity as well as the distribution of the load in the vehicle have ef-
fects on the driving behaviour and braking ability ⇒ 
.
Additional information and warnings:
● Rear lid ⇒ page 40
● To lower the front passenger seat backrest ⇒ page 55
● Light ⇒ page 84
● Luggage compartment ⇒ page 100
● Roof carrier ⇒ page 104
● Wheels and tyres ⇒ page 210
WARNING
Unsecured or incorrectly secured objects can cause serious injury in case
of a sudden manoeuvring or breaking or in case of an accident. This is es-
pecially true when objects are struck by a detonating airbag and fired
through the vehicle interior. To reduce the risks, please note the follow-
ing:
● Secure all objects in the vehicle. Always keep equipment and heavy
objects in the luggage compartment.
WARNING (Continued)
● Always secure objects with suitable rope or slings so that they cannot
enter the deployment areas around the frontal or side airbags in case of
sudden braking or an accident.
● Always ensure that objects inside the vehicle cannot move into the
deployment area of the bags while driving.
● While driving, always keep object compartments closed.
● Remove all objects from the front passenger seat when this is fol-
lowed down. When the seat backrest is folded down, it presses on small
and light objects and these are detected by the weight sensor on the
seat; this sends false information to the airbag control unit.
● While the backrest of the front passenger seat is folded, the frontal
airbag must remain disconnected and the PASSENGER AIRBAG OFF 
light on.
● Objects secured in the vehicle should never be placed in such a way
as to make passengers sit in an incorrect position.
● If secured objects occupy a seat then this should not be occupied or
used by anybody.
WARNING
The driving behaviour and braking ability change when transporting
heavy and large objects.
● Adjust your speed and driving style to visibility, road, traffic and
weather conditions.
● Accelerate gently and carefully.
● Avoid sudden braking and manoeuvres.
● Brake early.

Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical Data

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

156Driver assistance systems
Note
If the City Safety Assist function activates a brake, the brake pedal range is
reduced. This makes the brake pedal seem “harder”.
Note
Automatic brake intervention by the City Safety Assist function can be can-
celled by pressing the clutch pedal, the accelerator pedal or by a corrective
intervention.
Note
During the automatic braking by the City Safety Assist function you may
hear unusual noises. This is normal and is produced in the brakes system. 
Warning and control lamps
The City Safety Assist function is switched on every time the ignition is
switched on. No special indication is produced.
If the City Safety Assist function is switched off, functions or there is an error
in the system, this will be shown by a control lamp on the instrument panel
display.
lights upPossible cause ⇒ Solution
 
The City Safety Assist func-
tion has been switched on
manually using the button  
⇒ Fig. 98.
The control lamp turns off after
about 5 seconds.
flashesPossible cause ⇒ Solution

fast: The City Safety Assist
system function brakes auto-
matically or has braked auto-
matically.Control lamp turns off automati-
cally.
slow: City Safety Assist func-
tion is not currently available.
If the vehicle is stopped, switch
off the engine and switch it on
again. If necessary, inspect the
laser sensor (dirt, frozen) ⇒ 
in Laser sensor on page 157. If
it still does not function, refer to
a Specialised workshop to have
the system inspected.


within the operating area of
5-30– km/h (3-19 mph): The
City Safety Assist function
has been switched off man-
ually using the button  
⇒ 
Fig. 98.
Switch on the City Safety Assist
function manually using the but-
ton  
⇒ Fig. 98.
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.
● Stop the vehicle safely as soon as possible.
CAUTION
Failure to heed the warning lamps when they appear may result in faults in
the vehicle. 

159
Driver assistance systems
Special driving situations
Fig. 99 A: Vehicle on a bend. B: Motorcyclist driving
ahead out of range of the laser sensor
Fig. 100 Other vehicles
changing lanes
The City Safety Assist function has physical limits, and has limits deter-
mined by the system itself. In certain circumstances, this may produce reac-
tions from the City Safety Assist system, that are late or unexpected by the
driver. For this reason, always pay due attention and if necessary, intervene. 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. 99 A.
To interrupt the deceleration you can accelerate, turn the steering wheel or
press the clutch.
Narrow vehicles in front
The laser sensor will only detect narrow vehicles in front if they are in the
sensor detection zone ⇒ Fig. 99 B. This applies especially to narrow vehi-
cles such as motorbikes.
Other vehicles changing lanes
Vehicles changing lane in close proximity can cause an unexpected brake
from the City Safety Assist system ⇒ Fig. 100. To interrupt the deceleration
you can accelerate, turn the steering wheel or press the clutch. 
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 

199
Vehicle care and maintenance
CAUTION
To prevent damage to the vehicle, please observe the following before en-
tering an automatic car wash :
● Compare the distance between the vehicle wheels and the distance be-
tween the guide-rails of the car wash to prevent damage to the wheels and
tyres!
● Switch off the rain sensor before taking the vehicle to an automatic car
wash.
● Compare the height and width of your vehicle with the available height
and width when entering and driving through the car wash!
● Fold in exterior mirrors Electrically retractable exterior mirrors must NOT
be folded in or out by hand. Always use the electrical power control.
● To avoid damaging the bonnet paintwork, rest the windscreen wipers on
the windscreen after drying the wiper blades. Do not let them fall!
● Lock the rear lid to prevent it from opening unexpectedly while inside
the car wash. 
Washing the vehicle with high pressure cleaning apparatus
When cleaning the vehicle with a high-pressure cleaner, always follow the
operating instructions for the equipment. Pay special attention to the re-
quired pressure of the jet and the distance between the jet and the vehicle
⇒ 
.
Keep a suitable distance from soft materials, such as rubber hoses or insu-
lating material, and from the parking distance warning system sensors. The
sensors of the parking distance warning system are situated on the rear
bumper ⇒ 
.
Do not use a nozzle that sprays the water out in a direct stream or one that
has a rotating jet for forcing off dirt ⇒ 
.
WARNING
The incorrect use of high pressure cleaning equipment could result in
permanent damage, visible or invisible, to the tyres or other materials.
This could result in serious accident.
● Ensure there is a suitable distance between the nozzle and the tyres.
● Never wash tyres with a concentrated jet or so-called “dirt blasters”.
Even at large spraying distances and short cleaning times, you may dam-
age the tyres.
WARNING
After the vehicle has been washed, the braking effect will be reduced
(and the braking distance increased) due to moisture (and ice in winter)
on the brakes.
● “Dry the brakes and remove ice” by braking carefully. Ensure that you
are not endangering other road-users or breaking traffic regulations in
the process.
CAUTION
● The temperature of the water must not be above +60 °C (+140 °F).
● To avoid damage to the paintwork, do not wash the vehicle in full sun.
● To ensure that the system functions well, the sensors located on the
bumper must be kept clean and free from ice. When cleaning with pressure
hoses and steam cleaners, the sensors should be sprayed only briefly. A
distance of 10 cm between the sensors and the steam / hose nozzle must
be observed.
● Do not use a high pressure cleaner to remove ice or snow from windows
● Washing the vehicle in low temperatures: When washing the vehicle
with a hose, do not direct water into the lock cylinders or the gaps around
the doors, rear lid, or sunroof. Locks and seals could freeze! 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical Data

Control lampAirbag system . . . . . . . . . . . . . . . . . . . . . . . . 69
Brake pad wear warning . . . . . . . . . . . . . . 135
Brake system . . . . . . . . . . . . . . . . . . . . . . . 135
Catalytic converter . . . . . . . . . . . . . . . . . . . 236
City Safety Assist function . . . . . . . . . . . . . 156
Cruise control system (CCS) . . . . . . . . . . . . 152
Emission control system . . . . . . . . . . . . . . 236
Engine coolant . . . . . . . . . . . . . . . . . . . . . . 189
Engine management . . . . . . . . . . . . . . . . . 236
Engine oil sensor . . . . . . . . . . . . . . . . . . . . 185
ESC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Fuel level . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Hill hold . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Steering column lock . . . . . . . . . . . . . . . . . 147
Controlling function Electric exterior mirrors . . . . . . . . . . . . . . . . 96
Control units . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Reprogramming . . . . . . . . . . . . . . . . . . . . . 227
Convenience functions Reprogramming . . . . . . . . . . . . . . . . . . . . . 227
Coolant See engine coolant . . . . . . . . . . . . . . . . . . 189
Crossing a river Salt water . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Cruise control system . . . . . . . . . . . . . . . . . . . . 152
Cruise control system (CCS) Control lamp . . . . . . . . . . . . . . . . . . . . . . . . 152
Operations . . . . . . . . . . . . . . . . . . . . . . . . . 153 D
Damaged tyres . . . . . . . . . . . . . . . . . . . . . . . . . 216
Dangers of not using the seat belt . . . . . . . . . . 60
Dash panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Airbag system . . . . . . . . . . . . . . . . . . . . 67, 208
Data link connector (DLC) . . . . . . . . . . . . . . . . 227
Data registry . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Data storage during the journey . . . . . . . . . . . 226
Data stored by the control units . . . . . . . . . . . 226
Daytime driving light . . . . . . . . . . . . . . . . . . . . . 87
De-icing the door lock cylinder . . . . . . . . . . . . 203
De-icing the locks . . . . . . . . . . . . . . . . . . . . . . . 203
Deadlock Deadlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
SAFELOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Deadlock (immobilizer) . . . . . . . . . . . . . . . . . . 123
Detail passenger seat . . . . . . . . . . . . . . . . . . . . . . . 14
Diagnostics connection . . . . . . . . . . . . . . . . . . 227
Differential lock See "Brake assist systems" . . . . . . . . . . . . 140
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Dipped beam headlights . . . . . . . . . . . . . . . . . . 86
Dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Instrument panel . . . . . . . . . . . . . . . . . . . . . 19
Disposal Airbag system . . . . . . . . . . . . . . . . . . . . . . . 235
Belt tension device . . . . . . . . . . . . . . . . . . . . 65
End-of-life vehicle . . . . . . . . . . . . . . . . . . . 235 Door handle
exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Door release lever interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Childproof locks . . . . . . . . . . . . . . . . . . . . . . 38
Emergency locking and unlocking . . . . . . 243
Drink holders . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Centre console . . . . . . . . . . . . . . . . . . . . . . 114
Drinks bottles see Drink holders . . . . . . . . . . . . . . . . . . . . 113
Driver door Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Driver position . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Driving Check list . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Data storage . . . . . . . . . . . . . . . . . . . . . . . . 226
Driving abroad . . . . . . . . . . . . . . . . . . . . . . . 26
Driving through water . . . . . . . . . . . . . . . . . 27
Driving with an automatic gearbox . . . . . . 131
Ecological . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Economic . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . 172
Fuel level to low . . . . . . . . . . . . . . . . . . . . . 173
Journey preparations . . . . . . . . . . . . . . . . . . 25
Parking downhill . . . . . . . . . . . . . . . . . . . . 137
Parking uphill . . . . . . . . . . . . . . . . . . . . . . . 137
Protection of the undercarriage . . . . . . . . . . 25
starting on a slope . . . . . . . . . . . . . . . . . . . 131
stopping on a slope . . . . . . . . . . . . . . . . . . 131
Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
294 Index