2006 SKODA OCTAVIA check engine light

Checking the coolant level
Fig. 135
Engine compartment: Coolant
expansion reservoir
First read and observe the introductory information and safety warn-
ings on page 158.
The coolant expansion bottle is located in the engine compartment.
›
Switch off the engine.
› Open the bonnet
» page 160.
› Check the level of coolant in the coolant expansion bottle
» Fig. 135. The cool-
ant level when the engine is cold must lie between the B
(MIN) and A
(MAX)
markings. The level may also rise slightly above the A
(MAX) marking when the
engine is warm.
If the coolant level in the coolant expansion tank is too low, this is indicated by
the warning light  lighting up in the instrument cluster » page 20, Coolant tem-
perature/coolant level . We still recommend inspecting the coolant level directly
at the reservoir from time to time.
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the system. Do
not merely top up the coolant. Have the cooling system checked by a
ŠKODA spe-
cialist garage immediately. CAUTION
If a fault causes the engine to overheat, we recommend visiting a ŠKODA Service
Partner immediately, otherwise serious engine damage may occur. Ð
ä Replenishing the coolant
First read and observe the introductory information and safety warn-
ings on page 158.
›
Switch off the engine.
› Allow the engine to cool.
› Place a cloth over the cap of the coolant expansion reservoir
» Fig. 135 on
page 163 and unscrew the cap carefully.
› Replenish the coolant.
› Turn the cap until it clicks into place.
Do not use an alternative additive if the specified coolant is not available in an
emergency. In this case, just use water and have the correct mixing ratio of water
and the coolant additive restored by a ŠKODA

specialist garage as soon as possi-
ble.
Only use new coolant to top up the system.
Do not fill the coolant above the mark A
(max.)
» Fig. 135 on page 163! Excess
coolant heats up and then is forced out of the cooling system through the pres-
sure relief valve in the cap. WARNING
■ The coolant additive and thus all of the coolant is harmful to your health.
Avoid contact with the coolant. Coolant vapours are also harmful to health.
Therefore always safely store the coolant additive in its original container out
of the reach of children - risk of poisoning!
■ If any coolant splashes into your eyes, immediately rinse out your eyes with
clear water and contact a doctor as soon as possible.
■ You should also consult a doctor without delay if you have inadvertently
swallowed coolant. CAUTION
Do not continue your journey, if it is not possible  to top up the coolant under
the prevailing conditions . Contact a

ŠKODA Service Partner to avoid the risk of
serious engine. Ð
ä
163
Inspecting and replenishing

Radiator fan
First read and observe the introductory information and safety warn-
ings on page 158.
The radiator fan is driven by an electric motor and controlled according to the
coolant temperature.
After switching off the ignition, the radiator fan can intermittently continue to op-
erate for approx. 10 minutes.
ÐChecking the brake fluid
Fig. 136
Engine compartment: Brake fluid
reservoir
First read and observe the introductory information and safety warn-
ings on page 158.
The brake fluid reservoir is located in the engine compartment.
›
Switch off the engine.
› Open the bonnet
» page 160.
› Check the level of brake fluid in the reservoir
» Fig. 136. The level must be be-
tween the “MIN” and “MAX” markings.
When driving, a slight drop in the fluid level is caused by the wear-and-tear and
automatic adjustment of the brake pads, and is therefore perfectly normal.
There may be an indication of a leak in the brake system, however, if the fluid lev-
el drops significantly within a short time or if it drops below the “MIN” marking. If
the brake fluid level is too low, this is indicated by the warning light  lighting up
in the instrument cluster » page 19, Brake system .
ä
ä WARNING
If the fluid level has dropped below the MIN marking,  do not continue your
journey - risk of accident! Seek help from a
ŠKODA specialist garage.Ð Changing the brake fluid
First read and observe the introductory information and safety warn-
ings on page 158.
Brake fluid absorbs moisture. Over time it therefore absorbs moisture from the
environment. Excessive water in the brake fluid may be the cause of corrosion in
the brake system. The water content also lowers the boiling point of the brake
fluid.
The brake fluid must comply with the following standards or specifications:
› VW 50114;
› FMVSS 116 DOT4. WARNING
Using old brake fluid can result in severe stress on the brakes because of the
formation of vapour bubbles in the brake system. This greatly impairs the
braking efficiency and thus also the safety of your vehicle. CAUTION
Brake fluid damages the paintwork of the vehicle. Ð
ä
164 General Maintenance

Windscreen washer system
Fig. 137
Engine compartment: Wind-
screen washer fluid reservoir
First read and observe the introductory information and safety warn-
ings on page 158.
The windscreen washer fluid reservoir contains the cleaning fluid for the wind-
screen or rear window and for the headlight cleaning system. The windscreen
washer fluid reservoir is located in the engine compartment.
The filling level of the container is about 3
litres and about 5.5 litres on vehicles
that have a headlight washing system 1)
.
Clear water is not sufficient to intensively clean the windscreen and headlights.
We therefore recommend using clean water with a screen cleaner (including anti-
freeze in the winter) that is able to remove stubborn dirt.
Antifreeze should always be added to the cleaning water in the winter even if the
vehicle is fitted with heated windscreen washer nozzles.
Under exceptional circumstances, methylated spirits can also be used if no screen
cleaner with antifreeze is available. The concentration of methylated spirits must
not be more than 15 %. The freeze protection at this concentration is sufficient
only to -5 °C. CAUTION
■ Under no circumstances must radiator antifreeze or other additives be added to
the windscreen washer fluid.
■ If the vehicle is fitted with a headlight cleaning system, only cleaning products
which do not attack the polycarbonate coating of the headlights must be added
to the windscreen washer fluid.
ä Note
Do not remove the filter from the windscreen washer fluid reservoir when replen-
ishing it with liquid otherwise the liquid transportation system can be contamina-
ted, which can cause the windscreen washer system to malfunction. Ð Vehicle battery
ä
Introduction
This chapter contains information on the following subjects:
Battery cover 167
Checking the battery electrolyte level 167
Operation in winter 167
Charging a vehicle battery 168
Disconnecting and reconnecting the vehicle battery 168
Replacing the vehicle battery 168
Automatic load deactivation 169
Warning symbols on the vehicle battery Symbol Importance
 Always wear eye protection.
 Battery acid is severely caustic. Always wear gloves and eye protec-
tion.
 Keep fire, sparks, open flames and lit cigarettes well clear of the ve-
hicle battery.
 When charging the vehicle battery, a highly explosive gas mixture is
produced.
 Keep children away from the vehicle battery.
£1)
In some countries, 5.5 ltr. applies for both variants.
165
Inspecting and replenishing

Battery cover
Fig. 138
Engine compartment: Polyester cover of the vehicle battery/plastic
cover of the vehicle battery
First read and observe the introductory information and safety warn-
ings on page 165.
The battery is located in the engine compartment in a polyester cover
1
» Fig. 138 or in a plastic cover 2
.
› Open the battery cover in the direction of the arrow 1
or press the interlock on
the side of the battery cover in the direction of the arrow 2
, fold the cover up
and remove.
› The battery cover is installed in reverse order.
When working on the battery, the edge of the polyester battery cover 1
is inser-
ted between the battery and the side wall of the battery cover. ÐChecking the battery electrolyte level
Fig. 139
Vehicle battery: Electrolyte level
indicator
ä First read and observe the introductory information and safety warn-
ings on page 165.
We recommend you have the electrolyte level checked by a ŠKODA specialist ga-
rage from time to time, especially in the following cases.
› High outside temperatures.
› Long daily drives
› After each charge
» page 168.
On vehicles with a vehicle battery fitted with a colour indicator, the so-called
magic eye » Fig. 139, 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. Note
■ The battery electrolyte level is periodically checked by a ŠKODA Service Partner
as part of the Inspection Service. ■ For technical reasons, on vehicles with the description “AGM”, the electrolyte
level 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. Ð Operation in winter
First read and observe the introductory information and safety warn-
ings on page 165.
At low temperatures, the vehicle battery only has part of the initial power output
that it has at normal temperatures.
A discharged vehicle battery may already freeze at temperatures just below 0
°C.
We therefore recommend that you have the battery checked and, if necessary, re-
charged by a ŠKODA Service Partner before the start of the winter.
Ð
ä
ä
167
Inspecting and replenishing

WARNING (Continued)
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. Note
■ The anti-theft wheel bolt set and adapter can be purchased from a ŠKODA Serv-
ice Partner. ■ The national legal requirements must be observed when changing a wheel. ÐPreliminary work
First read and observe the introductory information and safety warn-
ings on page 179.
The following steps must be carried out before actually changing the wheel:
› In the event of a puncture, park the vehicle as far away as possible from the
flow of traffic. The place you choose should be level.
› Let all of the occupants get out.
While changing a tyre, the occupants of the
vehicle should not stand on the road (instead they should remain behind a crash
barrier).
› Switch off the engine and move the gearshift lever into
Neutral or move the
selector lever
for the automatic gearbox into position P .
› Firmly apply the
handbrake.
› If a trailer is connected, remove it.
› Remove the vehicle tool kit
» page 179 and the spare wheel » page 173 from
the boot. Ð
ä Changing a wheel
First read and observe the introductory information and safety warn-
ings on page 179.
Always change a wheel on a level surface as far as possible.
› Remove the full wheel trim
» page 174 or caps » page 174.
› In the case of light alloy wheel rims remove the wheel trim cap
» page 174.
› First of all slacken the anti-theft wheel bolt and then the other wheel
bolts » page 181.
› Jack up the vehicle until the wheel that needs changing is clear of the
ground » page 181.
› Unscrew the wheel bolts and place them on a clean surface (cloth, paper, etc.).
› Remove the wheel.
› Attach the spare wheel and slightly screw on the wheel bolts.
› Lower the vehicle.
› Alternately tighten the wheel bolts opposite each other using the wheel
wrench (crosswise) and then tighten the anti-theft wheel bolt » page 181.
› Reinstall the wheel trim/wheel trim cap or the caps. Note
■ All bolts must be clean and must turn easily.
■ Under no circumstances grease or oil the wheel bolts!
■ When fitting unidirectional tyres, ensure that the direction of rotation is cor-
rect »
page 170. Ð Subsequent steps
First read and observe the introductory information and safety warn-
ings on page 179.
The following steps must also be performed after changing the wheel.
› Stow and attach the replaced wheel in the spare wheel well using a special
screw » page 173 .
› Stow the vehicle tool kit in the space provided.
› Check
the tyre pressure
on the installed spare wheel as soon as possible.
› Have the
tightening torque of the wheel bolts checked with a torque wrench
as soon as possible.
› Change the damaged wheel or consult a ŠKODA specialist garage about repair
possibilities. £
ä
ä
180 Do-it-yourself

Fuses and light bulbs
Fuses
ä
Introduction
This chapter contains information on the following subjects:
Fuses in the dash panel 190
Fuses in the engine compartment 191
Individual electrical circuits are protected by fuses.
› Before replacing a fuse, switch off the ignition and the appropriate consumer
› Find out which fuse belongs to the component that is not operat-
ing » page 190, Fuses in the dash panel or » page 191, Fuses in the engine
compartment .
› Take the plastic clip out of its fixture in the cover of the fuse box, place it on the
relevant fuse and pull it out.
› A blown fuses is recognisable by the molten metal strip. Replace the faulty fuse
with a new one of the
same amperage.
Colour coding of fuses Colour Maximum amperage
light brown 5
dark brown 7.5
red 10
blue 15
yellow 20
white 25
green 30
orange 40
red 50WARNING
Always read and observe the warnings before completing any work in the en-
gine compartment » page 158, Engine compartment . CAUTION
■ Never “repair” fuses and also do not replace them with a fuse of a higher am-
perage - risk of fire! This may also cause damage at another part of the electrical
system.
■ Have the electrical system checked as quickly as possible by a ŠKODA specialist
garage if a newly inserted fuse blows again after a short time.
■ When unlocking and locking the cover for the fuse box in the engine compart-
ment, it must be pressed on the sides of the box, otherwise the locking mecha-
nism can be damaged. ■ The cover for the fuse box in the engine compartment must always be applied
correctly. Water can penetrate and cause damage to the vehicle if the cover was
not applied correctly! Note
■ We recommend always carrying replacement fuses in the vehicle. A box of re-
placement fuses can be purchased from
ŠKODA Original Accessories.
■ Multiple fuses may exist for a single power consuming device.
■ Multiple power consuming devices can share a single fuse.
■ Electrically adjustable seats are protected by automatic circuit breakers, which
switch on again automatically after a few seconds after the overload has been
eliminated. Ð
189
Fuses and light bulbs

Fog lights and daytime running lights 194
Fog lights Octavia RS, Octavia Scout 195
Changing the bulb for the licence plate light 195
Tail lamp assembly 196
Tail light (Combi) 196
Some manual skills are required to change a bulb. For this reason, if uncertain, we
recommend that bulbs are replaced by a ŠKODA specialist garage or other expert
help is sought.
› Switch off the ignition and all of the lights before replacing a bulb.
› Faulty bulbs must only be replaced with the same type of bulbs. The designa-
tion is located on the light socket or the glass bulb.
› A stowage compartment for replacement bulbs is located in a plastic box in the
spare wheel or underneath the floor covering in the boot. WARNING
■ Accidents can be caused if the road in front of the vehicle is not sufficiently
illuminated and the vehicle cannot or can only be seen with difficulty by other
road users.
■ Always read and observe the warnings before completing any work in the
engine compartment »

page 158, Engine compartment .
■ Bulbs H7 and H1 are pressurised and may burst when changing the bulb -
risk of injury! We therefore recommended wearing gloves and safety glasses
when changing a bulb. ■ Gas discharge bulbs (xenon bulbs) operate with a high voltage, professional
knowledge is required - danger to life! CAUTION
■ Do not take hold of the glass bulb with naked fingers (even the smallest
amount of dirt reduces the working life of the light bulb). Use a clean cloth, nap-
kin, or similar. ■ When removing and installing the headlight make sure that the paintwork of
the vehicle and the headlight are not damaged. Note
■ This Owner's Manual only describes the replacement of bulbs where it is possi-
ble to replace the bulbs on your own without any complications arising. Other
light bulbs should be changed by a

ŠKODA specialist garage.
■ We recommend that a box of replacement bulbs be always carried in the vehi-
cle. Replacement bulbs can be purchased from
ŠKODAOriginal Accessories.
■ We recommend that the headlight settings are checked by a ŠKODA specialist
garage after replacing a bulb in the main or low beam.
■ Gas discharge bulbs and LED diodes are replaced by a ŠKODA specialist garage. Ð Headlights
Fig. 160
Headlights: Bulb arrangement/removal
First read and observe the introductory information and safety warn-
ings on page 191.
Overview of the location of the bulbs
» Fig. 160. 1
- front turn signal light
2
- parking lights and low beam
3
- main beam light
The headlight must be removed in order to change the light bulb of the parking
lights, low beam lights and main beam lights as well as the turn signal lights.
Removing the main beam lights
› Open the bonnet
» page 160, Opening and closing the bonnet .
› Unscrew the plastic nuts A
» Fig. 160
.
› Pull the locking button B
upwards.
£
ä
192 Do-it-yourself

Index
A
ABS 96
Warning light 22
Accessories 177
Active steering support 95
Adjusting Exterior mirror 52
Adjusting seats 122
Adjustment Seat 55
Aerial 149
see Radio reception 151
Airbag 129
Deployment 129
Front airbag 130
Head airbag 132
Side airbag 131
Airbag system 129
Air conditioning system Air outlet vents 80
Climatronic 85
Manual air conditioning system 82
Alarm 31
Anti-theft alarm system 31
Antilock brake system 96
Armrest Front 74
rear 60, 75
Ashtray 68
Assistance systems ESC 95
Assist systems ABS 22, 96
Cruise control systems (CCS) 99
EDS and XDS 97
ESC 22Parking aid 98
START/STOP 100
TCS 21, 96
Auto Check Control 17
Automatic driving lamp control 40
Automatic gearbox 102
Dynamic shift programme 105
Emergency programme 106
Information for driving 102
Kickdown 105
Manual shifting of gears on the multifunction steering wheel 104
Parking 103
Selector lever-emergency unlocking 106
Selector lever lock 105
Selector lever positions 103
Starting off 103
Stopping 103
Tiptronic 104
Automatic load deactivation 169
Auxiliary heating (auxiliary heating and ventila- tion) 87
Avoiding damage to your vehicle 143
B
Before setting off 121
Belt tensioners 128
Bonnet Closing 160
Opening 160
Warning light 20
Boot Class
N1 vehicles 61
Cover 63
Emergency unlocking 34
Fastening elements 61
Fixing nets 62
Fixing of the floor covering 63
foldable boot cover (Combi) 64
Light 47see Boot lid 33
Unlocking the boot lid 34
Variable loading floor 64
Boot lid 33
Automatic locking 33
Warning light 21
Brake booster 95
Brake fluid Checking 164
Brakes Brake assist systems 93
Handbrake 95
Running in 139
Warning light 19
Braking Brake fluid 164
Braking assistant 95
Breakdown kit 182
Bulbs Replacing 191
Button in the driver's door Electric power windows 34
C
Car computer see Multifunction display 12
Car jack 179
Carrier 66
Catalytic converter 139
CD changer 119
Central locking button 29
Central locking system 27
lock 29
unlock 28
Changes 177
Changing Engine oil 162
Wheel 179
Charging a vehicle battery 168
208 Index