ECU SKODA OCTAVIA 2012 2.G / (1Z) Owner's Guide

WARNINGWhen working in the engine compartment, injuries, scolding, accident or fire
hazards may arise. For this reason, it is essential to comply with the warning
instructions stated below and with the general applicable rules of safety. The
engine compartment of your car is a hazardous area!■
Before beginning work in the engine compartment, please read the follow-
ing advice. ■ Turn off the engine and withdraw the ignition key.
■ Firmly apply the handbrake.
■ If the vehicle is fitted with a manual gearbox, move the gearshift lever into
Neutral, or if the vehicle is fitted with an automatic gearbox, move the se- lector lever into position P.
■ Allow the engine to cool.
■ Never open the bonnet if you can see steam or coolant flowing out of the
engine compartment – risk of scalding! Wait until the steam or coolant has stopped escaping.
■
While working in the engine compartment, please read the following advice.
■ Keep children clear of the engine compartment.
■ Never touch the radiator fan while the engine is still warm. The fan might
suddenly start running!
■ Do not touch any hot engine parts – risk of burns!
■ The coolant additive and thus all of the coolant is harmful to your health.
■ Avoid contact with the coolant.
■ Coolant vapours are harmful to health.
■ Never open the end cover of the coolant expansion reservoir while the en-
gine is still warm. The cooling system is pressurized!
■ When opening the end cover of the coolant expansion reservoir, cover it
with a cloth to protect your face, hands and arms from hot steam or hot coolant. ■ If any coolant splashes into your eyes, immediately rinse out your eyes
with clear water and contact a doctor as soon as possible.
■ Always safely store the coolant additive in its original container out of the
reach of children – risk of poisoning!
■ If coolant is swallowed - consult a doctor immediately.
■ Do not leave any items such as cloths or tools in the engine compartment.
■ Never spill fluids on the hot engine. Such fluids (e.g. the antifreeze con-
tained in the coolant) may ignite!
WARNING (Continued)■ Whenever working in the engine compartment while the engine is running,
you must pay heed to the following warning instructions. ■Pay particular attention to moving engine parts (e.g. V-ribbed belt, alterna-
tor, radiator fan) and the high-voltage ignition unit - danger to life! ■ Never touch the electric wiring on the ignition system.
■ Avoid short circuits in the electrical system – particularly on the vehicle's
battery. ■ Always make sure that no jewellery, loose clothing or long hair can get
caught in rotating engine parts – hazard! Always remove any jewellery, tie back long hair and wear tight fitting clothing before completing any work.■
The following warning instructions must be observed if work has to be car-
ried out on the fuel or electrical system. ■ Always disconnect the vehicle battery from the electrical system.
■ Do not smoke.
■ Never work near open flames.
■ Always have a functioning fire extinguisher nearby.
■
Read the information and warning instructions on the fluid containers.
■
Keep fluids in their original containers and keep out of reach of children!
■
If you wish to work under the vehicle, you must secure the vehicle from roll-
ing away and support it with suitable supporting blocks: the car jack is not
sufficient for this – risk of injury!
■
The bonnet must always be properly closed when driving. This is why after
closing the bonnet, the lock must always be checked to ensure it has engaged
properly.
■
If you notice that the lock is not properly engaged while driving, stop the ve-
hicle immediately and close the bonnet – risk of an accident!
CAUTION
■ Always top up using the correct specification of fluids. This may result in major
operating problems and also vehicle damage!■
Never open the bonnet using the locking lever.
For the sake of the environment
In view of the environmentally friendly disposal of fluids, the specials tools and
knowledge required for such work, we recommend that fluids are changed by a
Škoda Partner as part of the inspection service. 170General Maintenance

Note■If there is anything you are not sure about concerning fluids, please consult a
ŠKODA Partner.■
Fluids with the correct specifications can be purchased from ŠKODA Original Ac-
cessories.

Opening and closing the bonnet
Fig. 146
Bonnet/radiator grille release lever: Release lever
Fig. 147
Securing the bonnet
First read and observe the introductory information and safety warn-
ings
on page 169.
When the front door is closed, the bonnet cannot be unlocked with lever
1
.
Opening
›
Open the front left door.
› Pull the release lever under the dash panel in the direction of the arrow1
» Fig. 146 .
Before opening the bonnet, ensure that the arms of the windscreen wipers are
correctly in place against the windscreen otherwise the paintwork could be dam- aged.›
Press the release lever in the direction of the arrow
2
and the bonnet is un-
locked.
›
Grab hold of the bonnet and lift.
›
Take the bonnet support out of its holder
3
in the direction of the arrow and
secure the opened bonnet by inserting the end of the support in the opening
4
designed for it.
Closing
›
Lift the bonnet slightly and unhook the bonnet support. Insert the bonnet sup-
port into the holder
3
designed to hold it.
›
Let the bonnet drop into the lock carrier lock from a height of around 20 cm – do not push it in!
Check whether the bonnet has been closed properly. Also make sure a vehicle
with an opened bonnet does not appear in the instrument cluster dis-
play » page 21 .

171Inspecting and replenishing

Checking the battery electrolyte levelFig. 154
Vehicle battery: Electrolyte level
indicator
First read and observe the introductory information and safety warn-
ings on page 176.
On vehicles with a vehicle battery fitted with a colour indicator, the so-called magic eye » Fig. 154, the electrolyte level can be determined by looking at the
change in colour.
Air bubbles can influence the colour of the indicator. For this reason carefully
knock on the indicator before carrying out the check.
› Black colour – electrolyte level is correct.
› Colourless or light yellow colour – electrolyte level too low, the battery must be
replaced.
For technical reasons, on vehicles with the description “AGM”, the electrolyte lev- el cannot be checked.
Vehicles with a START-STOP system are fitted with a battery control unit for checking the energy level for the recurring engine start.
We recommend you have the electrolyte level checked by a ŠKODA specialist ga-
rage from time to time, especially in the following cases.
› High external temperatures.
› Longer day trips.
› After each charge.
Winter time
The vehicle battery only has a proportion of the starting power in lower tempera- tures. A discharged vehicle battery may already freeze at temperatures just be-
low 0 °C .
We therefore recommend that you have the battery checked and, if necessary, re-
charged by a ŠKODA Partner before the start of the winter.
NoteThe battery electrolyte level is periodically checked by a ŠKODA Partner as part of
the Inspection Service.
Charging a vehicle battery
First read and observe the introductory information and safety warn-ings
on page 176.
A properly charged vehicle battery is essential for reliably starting the engine.
›
Switch off the ignition and all of the electrical components.
›
Only when performing a “quick-charge”, disconnect both battery cables (first of
all “negative”, then “positive”).
›
Attach the terminal clamps of the charger to the battery terminals (red = “posi-
tive”, black = “negative”).
›
Plug the mains cable of the charger into the power socket and switch on thedevice.
›
After charging has been successful: Switch off the charger and remove themains cable from the power socket.
›
Only then disconnect the charger's terminal clamps.
›
Reconnect the cables to the battery (first of all “positive”, then “negative”).
It is not necessary to disconnect the cables of the battery if you recharge the ve- hicle battery using low amperages (for example from a mini-charger). Refer to the
instructions of the charger manufacturer .
A charging current of 0.1 multiple of the total vehicle battery capacity (or lower) must be used until full charging is achieved.
It is necessary to disconnect both cables before charging the battery with high
amperages, so-called “ quick-charging”.
The vent plugs of the vehicle battery should not be opened for charging.
Replacing the vehicle battery
When replacing a battery, the new vehicle battery must have the same capacity,
voltage, amperage and be the same size. Suitable types of vehicle batteries can
be purchased from a ŠKODA Partner.
We recommend that the battery is replaced by a ŠKODA Partner, where the new
vehicle battery will be installed properly and the original battery will be disposed
of in accordance with national regulations. 
179Inspecting and replenishing

Full wheel trimFirst read and observe the introductory information and safety warn-
ings
on page 181.
Pulling off
›
Hook the clamp found in the vehicle tool kit into the reinforced edge of the wheel trim.
›
Push the wheel wrench through the clamp, support on the tyre and pull off the
wheel trim.
Install
›
Press the wheel trim onto the wheel rim at the valve opening provided.
›
Then press the trim into the wheel rim until its entire circumference locks cor- rectly in place.
CAUTION
■ Use the pressure of your hand, do not knock the full wheel trim! Avoid heavy
knocks when the trim is not yet inserted in the wheel rim. This could cause dam-
age to the guide and centring elements of the trim.■
Ensure that the anti-theft wheel bolt has been installed correctly » page 192,
Securing wheels against theft .
■
If wheel trims are retrofitted it must be ensured that an adequate flow of air is
assured to cool the brake system.

Wheel bolts
Fig. 158
Remove the cap
First read and observe the introductory information and safety warn- ings on page 181.
Pulling off›Push the plastic clip sufficiently far onto the cap until the inner catches of the
clip are positioned at the collar of the cap » Fig. 158.›
Remove the cap.
Install
›
Push the caps onto the wheel bolts up to the stop.
The wheel bolt caps are housed in a plastic box in the spare wheel or in the stor-
age space for the spare wheel.

Tyre control display
Fig. 159
Button for setting the tyre infla-
tion pressure control value
First read and observe the introductory information and safety warn-
ings on page 181.
Calibration
After changing the tyre inflation pressure » page 182, in section Introduction ,
after changing one or several wheels, the position of a wheel on the vehicle or
when the warning light lights up while driving, a calibration of the system must
be carried out as follows:
›
Inflate all of the tyres to the specified inflation pressure » page 182.
›
Switch on the ignition.
›
Start the system calibration.
On vehicles with Infortainment » operating instructions for Infotainment , chap-
ter Setting vehicle systems (CAR button) .
On vehicles with the radio preinstallation .
›
Press and hold the button 

» Fig. 159 for longer than 2 seconds. 
185Wheels

Do-it-yourself
Do-it-yourself
First-aid kit and warning triangle
Fig. 160
Installation location: First-aid kit/warning triangle
The first aid kit
A
» Fig. 160 is attached by a strap in the right-hand storage com-
partment in the luggage compartment.
The warning triangle
B
can be attached to the rear wall trim panel with rubber
straps.
WARNINGThe first-aid kit and warning triangle must always be secured safely so that
they do not come loose when making an emergency braking or in a vehicle
collision which could cause injuries to occupants.
Note
■ Pay attention to the expiration date of the first-aid kit.■We recommend using a first-aid box from ŠKODA Original Accessories available
from a ŠKODA Partner.

Fire extinguisher
The fire extinguisher is attached with straps in a holder under the driver seat.
Please read carefully the instructions which are attached to the fire extinguish-
er.
The fire extinguisher must be checked by an authorised person on an annual ba-
sis (the national legal provisions must be observed).WARNINGThe fire extinguisher must always be secured safely so that they do not come loose when making an emergency braking or in a vehicle collision which could
cause injuries to occupants.
Note
■ The fire extinguisher must comply with the relevant applicable national legal re-
quirements.■
Pay attention to the expiration date of the fire extinguisher. If the fire extin-
guisher is used after the expiration date, its proper function is not assured.
■
The fire extinguisher is part of the scope of delivery in certain countries only.

Vehicle tool kit
Fig. 161
Vehicle tool kit 
188Do-it-yourself

The vehicle tool kit and the lifting jack are housed in a plastic box in the sparewheel or in the storage space for the spare wheel. There is also space here for
the removable ball rod for the trailer towing device. The box is attached with a
strap on the spare wheel.
Tool kit components » Fig. 161:
Screwdriver
Key for removing and installing the tail light
Adapter for anti-theft wheel bolts
Towing eye
Clamps for removing the wheel trims
Car jack
Crank for the jack
Wheel wrench
Extraction pliers for wheel bolt caps
Replacement bulb set
Screw the jack back into its home position after use to allow you to store it in the
box with the toolkit.WARNING■ The factory-supplied lifting jack is only intended for your model of vehicle.
Under no circumstances attempt to lift heavier vehicles or other loads – risk of
injury!■
Ensure that the vehicle tool kit is safely secured in the luggage compart-
ment.
Note
Ensure that the box is always secured with the strap.
Changing a wheel
 Introduction
This chapter contains information on the following subjects:
Preliminary work
190
Changing a wheel
19012345678910Subsequent steps190Loosening/tightening wheel bolts191
Raising the vehicle
191
Securing wheels against theft
192WARNING■ If you are in flowing traffic, switch on the hazard warning light system and
set up the warning triangle at the prescribed distance! The national legal re-
quirements must be observed.■
If the wheel is damaged or in the event of a puncture, park the vehicle as far
away as possible from the flow of traffic. Park on as flat and firm a surface as
possible.
■
If the wheel has to be changed on a slope, first of all block the opposite
wheel with a stone or similar object to prevent the vehicle from unexpectedly
rolling away.
■
If the vehicle is subsequently fitted with tyres which are different to those it
was fitted with at the works, follow these guidelines » page 183, New tyres
and wheels .
■
Always raise the vehicle with the doors closed.
■
Never position any body parts, such as arms or legs under the vehicle, while
the vehicle is raised with a lifting jack.
■
Secure the base plate of the lifting jack with suitable means to prevent pos-
sible moving. A soft and slippery ground under the base plate may move the
lifting jack, causing the vehicle to fall down. It is therefore always necessary to
place the lifting jack on a solid surface or use a wide and stable base. Use a
non-slip base (e.g. a rubber foot mat) if the surface is smooth, such as cobbled
stones, tiled floor, etc.
■
Never start the engine with the vehicle sitting on the raised jack – danger of
suffering injury.
■
Only attach the lifting jack to the attachment points provided for this pur-
pose.
CAUTION
■ The prescribed tightening torque of the wheel bolts for steel and light alloy
wheels is 120 Nm.■
If the anti-theft wheel bolt is fastened too tightly, it can cause damage to the
anti-theft wheel bolt and adapter. 
189Do-it-yourself

›Continue turning up the jack until the wheel is just about lifted off the ground.WARNING■
Only raise the vehicle at the attachment points.■Choose a flat and firm surface for jacking the vehicle.

Securing wheels against theft
Fig. 165
Principle sketch: Anti-theft
wheel bolt with adapter
First read and observe the introductory information and safety warn-
ings on page 189.
The anti-theft wheel bolts can only be removed/tightended with the aid of the
adapter » page 188 , Vehicle tool kit .
›
Pull off the full wheel trim from the wheel rim or the cap from the anti-theft
wheel bolt.
›
Insert the adapter
B
» Fig. 165 with its toothed side fully into the inner tooth-
ing of the safety wheel bolt
A
until the stop so that only the outer hexagon is
jutting out.
›
Push the wheel wrench onto the adapter
B
up to the stop.
›
Loosen or tighten the wheel bolt » page 191.
›
After removing the adapter, reinstall the full wheel trim or place the cap onto
the anti-theft wheel bolt.
›
Have the tightening torque checked with a torque wrench as soon as possible.
Make a note of the code number hammered into the rear side of the adapter or
the rear side of the anti-theft wheel bolt. This number can be used to purchase a
replacement adapter from a ŠKODA Partner, if necessary.
We recommend that you always carry the adapter for the wheel bolts with you in
the vehicle. It should be stowed in the vehicle tool kit.

Tyre repair
 Introduction
This chapter contains information on the following subjects:
Breakdown kit
193
Preparing to use the breakdown kit
193
Sealing and inflating tyres
194
Check after driving for 10 minutes
194
The repair can be undertaken on the vehicle immediately. Performing a repair with the breakdown kit not at all intended to replace a per-
manent repair on the tyre. Its purpose is to get to the nearest ŠKODA specialist
garage.
Use the breakdown kit to reliably repair tyre damage caused by foreign bodies or
a puncture with diameters up to approx. 4 mm.
Do not remove foreign bodies , e.g. screws or nails, from the tyre!
The breakdown kit must not be used under the following circumstances: › if there is damage to the wheels;
› in outside temperatures of less than -20 °C;
› with tears or punctures greater than 4 mm in size;
› if there is damage to the tyre wall;
› when driving with very low tyre pressure or with a completely flat tyre;
› if the use-by-date (see inflation bottle) has passed.
WARNING■
A tyre filled with sealant has the same driving characteristics as a standard
tyre.■
Do not travel faster than 80 km/h.
■
Avoid accelerating at full throttle, sharp braking and fast cornering.
■
Check the tyre inflation pressure after driving for 10 minutes!
■
The sealant is hazardous to heath. Remove immediately if it comes into con-
tact with the skin.
For the sake of the environment
Used sealant or sealant whose expiry date has passed must be disposed of in ac- cordance with environmental protection regulations. 192Do-it-yourself

Fuses in the dash panelFig. 171
Storage compartment in the dash panel/schematic diagram of the
fuse box
First read and observe the introductory information and safety warn-
ings
on page 199.
The fuse box can be found behind the stowage compartment in the left-hand
part of the dash panel.
Replacing fuses
›
Opening the stowage compartment » page 73.
›
Grab hold of the stowage compartment in the area of the arrows » Fig. 171.
›
Fold out the stowage compartment by pulling in the direction of arrow
1
.
›
Replace the appropriate fuse.
›
Fold back the stowage compartment by pressing into the secured position in
the dash panel in the direction of arrow
2
.
›
Close the stowage compartment.
Fuse assignment in the dash panel
No.Power consumer1Not assigned2Not assigned3Not assigned4Not assigned5Data bus control unit6Alarm sensorNo.Power consumer
7
Control unit for the air conditioning system, heating, receiver for re-
mote control for the auxiliary heating, selector lever for the automatic gearbox, relay for the rear window heater, replay for the windscreen
heater8Light switch, rain sensor, diagnostic socket9Haldex clutch10Touchscreen11Heated rear seats12Radio13Heated rear seats14Air blower for air conditioning,heating15Electric steering lock16Signal amplifier for telephone, telephone preinstallation17Instrument cluster18Not assigned19KESSY control unit20Steering wheel module21Radio accessories22Luggage compartment door opening23Light - right24Panorama roof25Control unit for central locking front door right, power windows - left26Heated front seats27Music amplifier28Towing device29Not assigned30Belt tensioner - driver's side31Headlight - left32Parking aid (Park Assist)33Airbag 200Do-it-yourself

›Carefully remove the connector from the tail lamp assembly in the direction of
the arrow 2.
Install›
Insert the connector into the lamp and lock it securely.
›
Insert the light vertically into the mounts on the bodywork » Fig. 182 -  .
›
Carefully press the tail lamp assembly into the bodywork so that the bolts
1
» Fig. 183 on page 206 on the light latch with the mounts in the body » .
›
Be careful not to pinch the cable bundle between the bodywork and light.
›
Screw the tail lamp into place and install the cover.
Ensure that the cover engages firmly.
CAUTION
■ Ensure that the cable bundle is not pinched when re-installing it between the
bodywork and the light - risk of damage to the electric installation and water in-
gress.■
If you are not sure whether the cable bundle was not pinched, we recomment
you have the connection to the light checked by a ŠKODA partner.

Replacing the bulbs in the tail lamp assembly
Fig. 183
Outer part of the light: Basic light/light with LED diodes
Fig. 184
Inner part of the light: Basic light/light with LED diodes
First read and observe the introductory information and safety warn-
ings
on page 202.
Outer part of the light
›
Turn the bulb holder
2
» Fig. 183 anti-clockwise remove it from the lamp hous-
ing.
›
Replace the bulb, insert the holder with the bulb into the lamp housing and turn
in a clockwise direction to the stop.
Inner part of the light
›
Unscrew the lamp holder » Fig. 183 - 
or 
with the screwdriver from the car
tool kit, and remove the lamp holder from the tail light assembly.
›
Turn the bulb holder anti-clockwise up to the stop and remove it from the lamp
housing » Fig. 183 - 
or 
.
›
Replace the bulb, insert the holder with the bulb into the lamp housing and turn
in a clockwise direction to the stop.
›
Insert the bulb holder in the tail lamp assembly.
›
Screw on the lamp holder carefully.

206Do-it-yourself

ReplenishingCoolant175
Engine oil173
Windscreen washer fluid176
Roof luggage rack Attachment points
69
Roof rack system68
Roof load69
Running-in the first 1 500 km
100
Running in Brake pads
100
Engine100
Tyres100
S
Safe securing system
30
Safety138
Child safety154
Child safety seats154
Head restraints63
ISOFIX157
TOP TETHER158
Save electrical energy101
Seat Adjusting electrically
60
Manually adjusting60
Seat belt Warning light
14, 15
Seat belt height adjuster145
Seat belts Belt tensioners
145
Cleaning165
fastening and unfastening144
Height adjustment145
Seatbelts Inertia reels
145
Seatsfolding forward63
Head restraints63
Heating62
see automatic gearbox Manual shifting of gears on the multifunction steering wheel
131
Select driving mode124
Selector lever see selector lever positions
130
Selector lever positions130
Service display11
setting Auxiliary heating (auxiliary heating and ventila- tion)
90
Setting Manual air conditioning system
85
Steering wheel93
Setting the clock11
Shifting Diving economically
101
Gearshift lever99
Side airbag149
Sliding/tilting roof Closing
41
Opening and tilting41
Operating41
Snow chains186
Spare wheel184
Speedometer10
Speed symbol see Wheels
183
Stabilisation Control (ESC)112
START/STOP Function
121
Starting engine Jump-starting
195
Starting the engine92
START STOP Jump-starting
196
Steering force assistance93
Steering wheel93
Stopping off the engine92
Storage72
Storage compartments72
Sun screen53
Sun visors53
Switching lights on and off44
T
Tachometer see Speedometer
10
Taking care of the vehicle Material coverings
164
Natural leather164
Seat belts165
Taking care of your vehicle159
Automatic car wash system160
Chrome parts161
Cleaning the wheels163
Door lock cylinders163
Headlight lenses162
High-pressure cleaner161
Plastic parts162
Polishing the paintwork161
Preservation161
Rubber seals163
Washing160
Washing by hand160
Wash system160
TCS Function
113
Warning light16
Technical data207
Through-loading bag77
Through-loading channel77
Tiptronic131
Tool188
TOP TETHER158
216Index