2012 Seat Mii change key battery

29
Unlocking and locking
Remote control vehicle key*
Fig. 12 Remote control
key
Remote control key
With the vehicle key the vehicle may be locked or unlocked remotely
⇒  page 33.
The vehicle key includes an emitter and battery. The receiver is in the interi-
or of the vehicle. The range of the vehicle key with remote control and new
battery is several metres around the vehicle.
If it is not possible to open or close the vehicle using the remote control key,
this should be re-synchronised ⇒ page 31 or the battery changed
⇒  page 31.
Different keys belonging to the vehicle may be used.
Folding the key shaft in and out
When the button is pressed ⇒ Fig. 12 A
, the key shaft is released and un-
folds.
To fold it press the button and fold the key shaft in until it locks in place. Duplicate keys
To obtain a spare key and other vehicle keys, the vehicle chassis number is
required.
Each new key must contain a microchip and be coded with the data from the
electronic vehicle immobilizer. In vehicle key will not work if it does not con-
tain microchip or the microchip has not been encoded. This is also true for
keys cut for the vehicle.
The vehicle keys or new spare keys can be obtained from a SEAT dealership,
a Specialised workshop or approved key service qualified to create this kind
of key.
Synchronise new keys or spare keys before use
⇒ page 31.
CAUTION
The remote control key contains electronic components. Protect the vehicle
keys from damage, impacts and humidity.
Note
Only use the key button when you require the corresponding function. Push-
ing the button unnecessarily could accidentally unlock the vehicle or trigger
the alarm. It is also possible even when you are outside the radius of action.
Note
Remote control key operation can be greatly influenced by overlapping ra-
dio signals around the vehicle working in the same range of frequencies (for
example, radio transmitters, mobile telephones).
Note
Obstacles between the remote control and the vehicle, bad weather condi-
tions and discharged batteries can considerably reduce the range of the re-
mote control. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical Data

31
Unlocking and locking
Changing the battery
Fig. 15 Vehicle key: bat-
tery compartment cover
Fig. 16 Vehicle key: re-
moving the battery
SEAT recommend having the batteries changed in a Specialised workshop.
The battery is located to the rear of the vehicle key, under a cover. Changing the battery
●
Unfold the key shaft ⇒ page 29.
● Remove the cover from the back of the vehicle key ⇒ Fig. 15 in the direc-
tion of the arrow ⇒ 
.
● Extract the battery from the compartment using a suitable thin object
⇒ Fig. 16.
● Place the new battery in the compartment, pressing as shown ⇒ Fig. 16
in the opposite direction to the arrow ⇒ 
.
● Fit the battery compartment cover, pressing in the direction of the arrow
as shown ⇒ Fig. 15 until it clicks into place.
CAUTION
● If the battery is not changed correctly, the vehicle key may be damaged.
● Use of unsuitable batteries may damage the vehicle key. For this reason,
always replace the dead battery with another of the same voltage, size and
specifications.
● When fitting the battery, check that the polarity is correct.
For the sake of the environment
Please dispose of your used batteries correctly and with respect for the envi-
ronment. 
To synchronise the vehicle key
If the button  is pressed frequently outside of the vehicle range, it is pos-
sible that the vehicle can no longer be locked or unlocked using the key. In
this case, synchronise the vehicle key once more as follows:
● Unfold the key shaft
⇒ page 29.
● Press the button 
on the vehicle key. For this, you must remain next to
the vehicle. 
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 

238Practical information
If and when
Practical information
Frequently asked questions
If you suspect that the vehicle has a fault or is damaged when using it, be-
fore consulting a SEAT dealership or a specialised workshop, carefully read
the following instructions. Similarly, the terms in the alphabetical index
“Things to note” or “Checklist” may be of help.
ProblemPossible causes,
among othersPossible solution
The engine does
not start.
The vehicle battery is
flat.– Carry out the jump start
⇒ page 273.
– Charge the battery
⇒ page 193.
You are using an incor-
rect vehicle key.Use the correct key
⇒ page 28.
The fuel tank level is
insufficient.Refuel ⇒ page 171.
The vehicle cannot
be locked or un-
locked with the
key.
– Vehicle key battery is
flat.
– Too far away from
the vehicle.
– Buttons pressed out-
side the radius of
reach.– Change the battery
⇒ page 28.
– Move closer to the vehicle.
– Synchronize the vehicle
key ⇒ page 28.
– Manually lock or unlock
the vehicle ⇒ page 243.
Unusual noises.
Engine cold, City Safe-
ty Assist system, steer-
ing column electronic
lock.See entry “Noises” in the de-
tailed alphabetical index.
ProblemPossible causes,
among othersPossible solution
Handling is
strange.
Assistance systems ac-
tive.See entry “Assistance sys-
tems” in the detailed alpha-
betical index.
You are using an incor-
rect tyre pressure.Check the tyre pressure
⇒ page 210.
Damage to the wheel
trims or tyres.
Inspect wheel trims and
tyres regularly for damage
⇒ page 210 and replace
them if necessary
⇒ page 250.
Vehicle has no
jack, spare wheel
or tire mobility set
present.Equipment subject to
the vehicle.
No direct solution, depends
on the equipment. In this
case, you should contact a
SEAT Dealership
⇒ page 246.
Surface not correct-
ly illuminated.
– Headlights covered
for driving on the left-
hand side or right-
hand side.
– Headlight adjust-
ment too high.
– Faulty bulbs.
– Dipped headlights
switched off.– Cover the headlights for
driving on the left-hand side
or right-hand side
⇒ page 84.
– Adjust the headlight range
⇒ page 84.
– Change the bulbs
⇒ page 264.
– Switch on the dipped
headlights ⇒ page 84. 

241
Practical information
Checklist (Continued) 7. When leaving the vehicle, take all keys with you.
8. Place an emergency warning triangle to indicate the position of your vehicle to other road users.
9. Allow the engine to cool and check if a specialist is required.
When being towed with the hazard warning lights system on, a change in
direction or traffic lane can be indicated as usual using the turn signals lev-
er. The hazard lights will be interrupted temporarily.
Examples of when to use the hazard warning lights system:
● If the vehicles ahead suddenly slow down or reach the end of a traffic
jam, to warn the vehicles behind.
● In case of an emergency.
● If the vehicle breaks down.
● When tow-starting or towing.
Always comply with the applicable laws regarding the use of hazard warn-
ing lights.
If the hazard warning lights system is not working, you must use an alterna-
tive method of drawing attention to your vehicle. This method must comply
with traffic legislation.
WARNING
Failure to follow the checklist prepared for your own safety could lead to
accidents and severe injuries.
● Always complete the operations given in the checklist and observe
the general rules of safety.
WARNING
The components of the exhaust system reach very high temperatures.
This could cause a fire and considerable damage.
● Always park your vehicle so that no part of the exhaust system can
come in contact with flammable materials (such as dried grass or fuel).
Note
The vehicle battery will discharge and run down if the hazard warning lights
remain on for too much time (even with the ignition turned off).
Note
For some vehicles, the brake lights will blink when braking suddenly at
speeds of approximately 80 km/h (50 mph) to warn vehicles behind. If brak-
ing continues, then the hazard warning lights system will automatically be
turned on at the speed of less than approximately 10 km/h (6 mph). The
brake lights remain lit. Upon accelerating, the hazard warning lights system
will be automatically turned off. 
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nanceIf and whenTechnical Data

276Practical information
Towing and tow starting
Introduction
When towing or tow starting, respect the legal requirements.
For technical reasons, it is not possible to tow a vehicle if the battery is flat.
Additional information and warnings:
● Exterior detail ⇒ page 6
● Electronic power control and exhaust gases purification system
⇒  page 236
WARNING
A vehicle with a flat battery should never be towed.
● Never remove the key from the ignition lock. Otherwise, the steering
wheel lock could suddenly lock. Then the vehicle will be uncontrollable.
You may lose control of the vehicle and there is a risk of serious accident.
WARNING
When towing the vehicle, the handling and braking efficiency change
considerably. Please observe the following instructions to minimise the
risk of serious accidents and injury:
● As the driver of the vehicle being towed:
– The brake must be depressed must harder as the brake servo does
not operate. Always remain aware to avoid collision with the towing
vehicle.
– More strength is required at the steering wheel as the power steer-
ing does not operate when the engine is switched off.
● As the driver of the towing vehicle:
– Accelerate gently and carefully.
– Avoid sudden braking and manoeuvres.
– Brake well in advance than usual and brake gently.
CAUTION
● Carefully fit and remove the towing ring and its cover to avoid damage to
the vehicle (for example, paintwork).
● When towing, fuel could enter the catalytic converter and cause dam-
age!
Note
Fitting a towline anchorage to the rear bumper is not possible. The vehicle is
not suitable for towing other vehicles. 

malfunction . . . . . . . . . . . . . . . . . . . . . . . . 132
starting on a slope . . . . . . . . . . . . . . . . . . . 131
stopping on a slope . . . . . . . . . . . . . . . . . . 131
Axle loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
B
BAS see Brake assist systems . . . . . . . . . . . . . . 140
Battery Change in the vehicle key . . . . . . . . . . . . . . 31
discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Discharging . . . . . . . . . . . . . . . . . . . . . . . . 241
See Vehicle battery . . . . . . . . . . . . . . . . . . 193
Battery acid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Before consulting a specialised workshop . . . 238
Belt tension device . . . . . . . . . . . . . . . . . . . . . . . 65 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Service and disposal . . . . . . . . . . . . . . . . . . 65
Belt tension limiter . . . . . . . . . . . . . . . . . . . . . . . 65
Bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Bonnet Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Bottle capacity Windscreen washer water bottle . . . . . . . . . 94
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Brake servo . . . . . . . . . . . . . . . . . . . . . . . . . 138
Brake assist system (BAS) . . . . . . . . . . . . . . . . 140
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Specification . . . . . . . . . . . . . . . . . . . . . . . . 141 Brakes
Assisted braking systems . . . . . . . . . . . . . 139
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . 141
Brake fluid level . . . . . . . . . . . . . . . . . . . . . 142
Brake pads . . . . . . . . . . . . . . . . . . . . . . . . . 137
Changing the brake fluid . . . . . . . . . . . . . . 142
Control lamp . . . . . . . . . . . . . . . . . . . . . . . . 135
Emergency brake indicator in case of sud-den braking . . . . . . . . . . . . . . . . . . . . . . . 241
Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . 136
Running-in brake pads . . . . . . . . . . . . . . . . 137
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 135
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . 138, 139
Brake system Malfunction . . . . . . . . . . . . . . . . . . . . . . . . 138
Brake systems . . . . . . . . . . . . . . . . . . . . . . . . . 139
Breakdown Securing the vehicle . . . . . . . . . . . . . . . . . 240
Bulb fault See changing bulbs . . . . . . . . . . . . . . . . . . 264
C
Capacities Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Care See "Care of your vehicle" . . . . . . . . . . . . . 197
Vehicle interior . . . . . . . . . . . . . . . . . . . . . . 205
Care of your vehicle Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Caring for paintwork . . . . . . . . . . . . . . . . . . . . . 202
Carrier system . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 237
Control lamp . . . . . . . . . . . . . . . . . . . . . . . . 236
Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . 236
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
central locking Deadlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Central locking button . . . . . . . . . . . . . . . . . 36
locking and unlocking from the exterior . . . 34
locking and unlocking from the inside . . . . 36
Central locking system After airbag deployment . . . . . . . . . . . . . . . 33
Description . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Opening doors individually . . . . . . . . . . . . . 33
Centre console . . . . . . . . . . . . . . . . . . . . . . . 12, 13 Bottom part . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Top part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Changing Windscreen wiper blades . . . . . . . . . . . . . 201
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . 250 Changing a wheel . . . . . . . . . . . . . . . . . . . 255
Preparations . . . . . . . . . . . . . . . . . . . . . . . . 251
Raising the vehicle . . . . . . . . . . . . . . . . . . . 253
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . 251
Changing bulbs . . . . . . . . . . . . . . . . . . . . . . . . 264 Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Front bumper . . . . . . . . . . . . . . . . . . . . . . . 267
Initial operations . . . . . . . . . . . . . . . . . . . . 265
in the headlights . . . . . . . . . . . . . . . . . . . . 266
Number plate light . . . . . . . . . . . . . . . . . . . 270
Rear lights . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Sea changing bulbs . . . . . . . . . . . . . . . . . . 264
292 Index