ignition Seat Mii 2013 Repair Manual

196In the engine compartment
the maximum service intervals permitted ⇒ Booklet Maintenance
Programme.
Automatic consumer disconnection
The intelligent vehicle electrical system automatically implements a range
of measures to prevent the battery from discharging when high demands
are made on it:
● the idling speed is increased so that the alternator provides more elec-
tricity.
● where necessary, the power of the most powerful consumers is reduced
or even completely disconnected.
● On starting the engine, the power supply from the 12-volt socket and
the cigarette lighter may be interrupted for a short time.
The on-board management program cannot always prevent the battery from
running flat. For example, if the ignition is left on for a long period with the
engine off or if the side lights or parking lights are left on while the vehicle
is stationary.
Why the battery runs flat:
● When stationary for a long time without starting the engine, particularly
if the ignition is switched on.
● Use of electrical consumers with the engine switched off.
WARNING
Incorrectly securing the battery or using the wrong battery can cause
short-circuits, fire and serious injuries.
● Always use only maintenance free batteries, protected to prevent a
leak, and whose properties, specifications and size correspond to the
standard battery.
WARNING
A highly explosive mixture of gases is released when the battery is under
charge.
● The batteries should be charged in a well-ventilated room only.
● Never charge a frozen or recently thawed battery. A flat battery can al-
so freeze at temperatures close to 0 °C (+32 °F).
● Always replace a battery which has frozen.
● Battery cables not correctly connected may cause a short circuit. Re-
connect first the positive cable and then the negative cable.
CAUTION
● Never disconnect the battery if the ignition is switched on or if the en-
gine is running. This could damage the electrical system or electronic com-
ponents.
● Never plug accessories supply current, such as solar panels or a battery
charger, to the 12-volt socket or the cigarette lighter. This could damage the
vehicle's electrical system.
For the sake of the environment
Dispose of the battery in an environment-friendly manner. Batteries contain
toxic substances such as sulphuric acid and lead.
For the sake of the environment
Battery acid can contaminate the environment. Collect any spilt service flu-
ids and allow a dispose of them correctly. 

237
Vehicle care and maintenance
Engine management and exhaust gas
purification system Introduction
Additional information and warnings:
● Changing gear ⇒  page 124
● Refuelling ⇒  page 171
● Fuel ⇒ page 177
● Engine oil ⇒ page 185
● Vehicle battery ⇒ page 193
● Information stored in the control units ⇒ page 222
● Tow starting and towing away ⇒ page 278
WARNING
The components of the exhaust system reach very high temperatures.
This could cause a fire.
● Always park your vehicle so that no part of the exhaust system can
come in contact with flammable materials (such as dried grass).
● Never apply additional underseal or anti-corrosion coatings to the ex-
haust pipes, catalytic converter or the heat shields on the exhaust sys-
tem.
 Control lamps
lights
upPossible causeSolution
Fault in engine management
(Electronic Power Control).Take the vehicle to a specialised
workshop as soon as possible
and have the engine checked.
Fault in catalytic converter.
You should reduce speed accord-
ingly. Drive carefully until you
reach the next specialised work-
shop. Have the engine checked
there.
flashesPossible causeSolution

Combustion fault which could
damage the catalytic convert-
er.You should reduce speed accord-
ingly. Drive carefully until you
reach the next specialised work-
shop. Have the engine checked
there.
Several warning and control lamps should light up for a few seconds when
the ignition is switched on, signalling that the function is being verified.
They will switch off after a few seconds.
CAUTION
Always pay attention to any lit control lamps and to the corresponding de-
scriptions and instructions to avoid damage to the vehicle.
Note
While the control lamps  or  maintain lit up, the engine will present
faults, a higher consumption of fuel and a loss of engine power. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical specifications

241
Practical information
In case of emergency
Introduction
Additional information and warnings:
● Braking, stopping and parking ⇒ page 134
● Emergency locking and unlocking ⇒ page 244
● Vehicle tools ⇒ page 247
● Change wheel ⇒ page 252
WARNING
A faulty vehicle in traffic represents a risk of accident for the driver and
for other road users.
● Stop the vehicle safely as soon as possible. Park the vehicle a safe
distance from surrounding traffic to lock all the doors in case of an emer-
gency. Turn on the hazard warning lights to warn other road users.
● Never leave children or disabled people alone in the vehicle if the
doors are to be locked. In case of an emergency, passengers will be trap-
ped inside the vehicle. Individuals locked in the vehicle can be exposed
to very high or very low temperatures.
 Protecting yourself and securing the vehicle
Fig. 133 Dash panel:
Button to switch on and
off the hazard warning
lights system
Always fulfil legal requirements for securing a broken down vehicle. In a
number of countries it is now obligatory, for example, to turn on the hazard
warning lights and use a reflective safety vest ⇒ page 243.
Checklist
For your own safety and that of other passengers, the following points
should be observed in the order given ⇒ 
:
1. Park the vehicle a safe distance from traffic and on suitable ground ⇒ 
.
2. Turn on the hazard warning lights with the button  ⇒ 
Fig. 133.
3. Apply the handbrake firmly ⇒ page 134.
4. Put the gearbox lever in neutral or the selector lever in position P ⇒ page 124.
5. Switch off the engine and remove the key from the ignition.
6. Have all occupants leave the vehicle and move to safety, for example behind a guard rail.
7. When leaving the vehicle, take all keys with you. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical specifications

242Practical information
Checklist (Continued) 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 on, a change in direction
or traffic lane can be indicated as usual using the turn signal lever. The haz-
ard lights will be interrupted temporarily.
Examples of when to use the hazard warning lights:
● 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 are not working, you must use an alternative
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 will be
automatically turned off. 

253
Practical information
Preparations for changing a wheel
Check list
Before changing a wheel, complete the following operations in the order
given ⇒ 
:
1. In the event of a flat tyre, park the vehicle a safe distance from traffic and on suitable ground.
2. Apply the handbrake firmly ⇒ page 134.
3. Automatic gearbox: move the selector lever to position P
⇒ page 124.
4. Stop the engine and remove the key from the ignition ⇒ page 119.
5. Manual gearbox: Select a gear ⇒ page 124.
6. Have all vehicle occupants get out of the vehicle and wait in a safe place (for example, behind the safety barrier).
7. Chock the wheel opposite the wheel being changed with a stone or similar object.
8. If the luggage compartment is full: take the baggage out of the vehi- cle.
9. Remove the spare wheel or the temporary spare wheel and the vehi- cle tool kit from the luggage compartment.
10. Remove the wheel trims ⇒ page 250.
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.
 Wheel bolts
Fig. 144 Changing a
wheel: Slacken the wheel
bolts.
Fig. 145 Changing a
wheel: Tyre valve
1 and
position of anti-theft
wheel locking bolt 2
Only use the tool supplied with the vehicle to loosen the wheel bolts.
Loosen the wheel bolts only about one turn before raising the vehicle with
the jack.

Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical specifications

260Practical information
Bottle of sealant 1)
Spare tyre valve
The valve insert remover 1
has a gap at the lower end for a valve insert.
The valve insert can only be screwed or unscrewed in this way. This also ap-
plies to its replacement part 11
. 
Preparation
Checklist
Before filling a tyre, complete the following operations in the order given
⇒ 
:
1. In the event of a puncture, park the vehicle as far as possible from traffic and on flat, suitable ground.
2. Apply the handbrake firmly ⇒ page 134.
3. Stop the engine and remove the key from the ignition ⇒ page 119.
4. Manual gearbox: Select a gear ⇒ page 124.
5. Have all vehicle occupants get out of the vehicle and wait in a safe place (for example, behind the safety barrier).
6. Switch on the hazard warning lights and set the warning triangle in position ⇒ page 241. Observe legal requirements.
7. Check whether a repair is possible using the Tyre Mobility Set ⇒ page 258
8. If the luggage compartment is full: take the baggage out of the vehi- cle.
9. Remove the tire mobility set from the luggage compartment.
10. Apply the sticker ⇒ Fig. 149 2
from the tire mobility set to the dash
panel where it can be seen clearly.
11. Do not remove foreign objects, e.g. screws or nails, from the tyre.
1011WARNING
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.

Sealing and inflating a tyre
Sealing a tyre
● Unscrew the tyre valve cap.
● Use the corresponding enclosed extractor ⇒ Fig. 149 1
to unscrew the
tyre valve insert. Place the valve insert on a clean surface.
● Vigorously shake the sealant bottle ⇒ Fig. 149 10
for several seconds.
● Screw the inflator tube ⇒ Fig. 149 3 securely into the sealant bottle in
a clockwise direction. The seal on the mouth of the bottle moves automati-
cally.
● Remove the lid from the filling tube ⇒ Fig. 149 3
and screw the open
end of the tube into the tyre valve.
● Hold the tyre sealant can upside down and fill the complete contents of
the can into the tyre.
● Remove the tyre sealant bottle from the valve.
● Screw the valve insert again with the corresponding enclosed extractor
⇒ Fig. 149 1
into the tyre valve.
Inflating the tyre
● Securely screw the tyre inflator tube ⇒ Fig. 149 5
of the compressor in-
to the tyre valve.
● Check whether the air bleed screw ⇒ Fig. 149 7
is closed.

1)
A compressor may also be included.

263
Practical information
Fuses
Introduction
Due to the constant update of vehicles, fuse assignments depending on
equipment and the use of the same fuse for various electrical components,
at the time of printing this manual it is not possible to provide an up-to-date
summary of the electrical components fuse positions. For detailed informa-
tion about the fuse positions, please consult a Technical Service.
In general, a fuse can be assigned to various electrical components. Like-
wise, an electrical component can be protected by several fuses.
Only replace fuses when the cause of the problem has been solved. If a
newly inserted fuse blows after a short time, you must have the electrical
system checked by a specialised workshop as soon as possible.
Additional information and warnings:
● Working in the engine compartment ⇒ page 180
WARNING
The high voltages in the electrical system can give serious electrical
shocks, causing burns and even death!
● Never touch the electrical wiring of the ignition system.
● Take care not to cause short circuits in the electrical system.
WARNING
Using unsuitable fuses, repairing fuses or bridging a current circuit with-
out fuses can cause a fire and serious injury.
● Never use a fuse with a higher value. Only replace fuses with a fuse of
the same amperage (same colour and markings) and size.
● Never repair a fuse.
● Never replace a fuse by a metal strip, staple or similar.
CAUTION
● To avoid damage to the vehicles electric system, before replacing a fuse
turn off the ignition, the lights and all electrical elements and remove the
keys from the ignition.
● If you replace a fuse with higher-rating fuse, you could cause damage to
another part of the electrical system.
● Protect the fuse boxes when open to avoid the entry of dust or humidity.
Dirt and humidity inside fuse boxes can cause damage to the electrical sys-
tem.
Note
One single consumer could have more than one fuse.
Note
Several consumers could run over one single fuse. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical specifications

265
Practical information
CAUTION
● Always carefully remove the fuse box covers and refit them correctly to
avoid problems with your vehicle.
● Protect the fuse boxes when open to avoid the entry of dust or humidity.
Dirt and humidity inside fuse boxes can cause damage to the electrical sys-
tem.
Note
In the vehicle, there are more fuses than those indicated in this chapter.
These should only be changed by a specialised workshop. 
Replacing a blown fuse
Fig. 152 Image of a
blown fuse
Preparation
● Switch off the ignition, lights and all electrical equipment.
● Open the corresponding fuse box ⇒ page 264. Identifying a blown fuse
A fuse is blown if its metal strip is ruptured
⇒ Fig. 152.
Point a lamp at the fuse. This will make it easier to see if the fuse is blown.
To replace a fuse
● Remove the fuse.
● Replace the blown fuse by one with an identical amperage rating (same
colour and markings) and identical size ⇒ 
.
● Replace the cover again or close the fuse box lid.
CAUTION
If you replace a fuse with higher-rating fuse, you could cause damage to an-
other part of the electrical system. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical specifications

267
Practical information
Information for replacing bulbs
Checklist
To replace a bulb, carry out the following operations always in the order giv-
en ⇒ 
:
1. Park the vehicle a safe distance from traffic and on suitable ground.
2. Apply the handbrake firmly ⇒ page 134.
3. Turn the light switch to position 0 ⇒ page 82.
4. Move the gear lever into the neutral position ⇒ page 82.
5. Stop the engine and remove the key from the ignition ⇒ page 119.
6. Automatic gearbox: move the selector lever to position P
⇒ page 124.
7. Manual gearbox: Select a gear ⇒ page 124.
8. Allow the corresponding bulb to cool.
9. Visually inspect fuses to see if any are blown ⇒ page 263.
10. Replace the bulb according to the instructions ⇒ 
. Bulbs should
only be replaced by new identical models. Bulb information is dis-
played on the bulb socket or on the bulb itself.
11. In general, never touch the bulb glass directly. The heat of the bulb would cause the fingerprint to evaporate and condense on the reflec-
tor. This will impair the brightness of the headlight.
12. Check if the new bulb is working. If the bulb is not working, it maynot have been correctly fitted, it could be damaged or the connector
may not be correctly connected.
13. Every time a bulb for the headlights is replaced, visit a specialised workshop to check the headlights.
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.
CAUTION
Always remove and fit headlights carefully to avoid damage to the paint-
work and other vehicle parts. 
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical specifications

276Practical information
How to jump start: description
Fig. 162 Diagram of con-
nections for vehicles
without Start-Stop sys-
tem.
Fig. 163 Diagram of con-
nections for vehicles
with Start-Stop system.
Jump lead terminal connections
1. Switch off the ignition of both vehicles ⇒ 
.2. Connect one end of the
red jump lead to the positive +
termi-
nal of the vehicle with the flat battery A ⇒ Fig. 162.
3. Connect the other end of the red jump lead to the positive ter-
minal +
in the vehicle providing assistance B.
4. For vehicles without Start-Stop system: Connect one end of the
black jump lead to the negative terminal –
of the vehicle pro-
viding assistance B ⇒ Fig. 162.
– For vehicles with Start-Stop system: Connect one end of the
black jump lead X
to a suitable ground terminal, a solid piece
of metal in the engine block, or to the engine block ⇒ Fig. 163.
5. Connect the other end of the black jump lead X
to a solid met-
al component bolted to the engine block or to the engine block
itself of the vehicle with the flat battery. However, connect it to
a point as far as possible from the battery A
.
6. Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.
Starting
7. Start the engine of the vehicle with the boosting battery and let it run at idling speed.
8. Start the engine of the vehicle with the flat battery and wait two or three minutes until the engine is “running”.
Removing the jump leads
9. Before you remove the jump leads, switch off the dipped beam headlights (if they are switched on). 