2012 SKODA OCTAVIA maintenance

CAUTION■The vehicle battery must only be disconnected if the ignition is switched off,
otherwise the vehicle's electrical system (electronic components) can be dam-
aged. When disconnecting the battery from the electrical system, first of all dis-
connect the negative terminal (-) of the battery, followed by the positive terminal
(+).■
When connecting the battery to the electrical system, first of all connect the
positive terminal (+) of the battery, followed by the negative terminal (-). Under no
circumstances must the battery cables be connected incorrectly – risk of a cable fire.
■
Ensure that battery acid does not come into contact with the bodywork – risk of
damage to the paintwork.
■
Do not place the battery in direct daylight in order to protect the vehicle battery
housing from the effects of ultra-violet light.
■
If the vehicle has not been driven for more than 3 to 4 weeks, the battery will
discharge. This is because certain electrical components consume electricity (e. g.
control units) also in idle state. Prevent the battery from discharging by discon-
necting the battery's negative terminal (-) or continuously charging the battery
with a very low charging current.
■
If the vehicle is frequently used for making short trips, the vehicle battery will
not have time to charge up sufficiently and may discharge.
For the sake of the environment
A vehicle battery that has been removed is a special type of hazardous waste.
These must be disposed of in accordance with national legal regulations.
Note
You should replace batteries older than 5 years.
Battery coverFig. 153
Engine compartment: Polyester
cover of vehicle battery
First read and observe the introductory information and safety warn-
ings on page 176.
The battery is located in the engine compartment - in some models, underneath apolyester cover » Fig. 153.
›
Fold out the cover on the battery in the direction of the arrow .
The battery cover is installed in reverse order.
The edge of the polyester battery cover is inserted between the battery and the
side wall of the battery cover when working on the battery.

178General Maintenance

WARNING“Quick-charging” the vehicle battery is dangerous and requires a special
charger and specialist knowledge.
CAUTION
On vehicles with the START/STOP system, the pole terminal of the charger must
not be connected directly to the negative terminal of the vehicle battery, but only
to the engine earth » page 196, Jump-starting in vehicles with the START-STOP
system .
Note
We recommend having the quick charging of vehicle batteries undertaken by a
ŠKODA specialist garage.
Disconnecting and reconnecting the vehicle battery
First read and observe the introductory information and safety warn-ings
on page 176.
On disconnecting and reconnecting the vehicle battery the following functionsare initially deactivated or are no longer able to operate fault-free:
OperationOperating measureElectrical power window (operational faults)» page 41Enter the radio/navigation system code num-
ber» operating instructions for Info-
tainment radio or » operating in-
structions for Infotainment Navi-
gationSetting the clock» page 11Data in the multifunction display are deleted» page 22
Note
We recommend having the vehicle checked by a ŠKODA Partner to ensure the full
functionality of all electrical systems.
Automatic load deactivation
First read and observe the introductory information and safety warn-ings
on page 176.
The vehicle voltage control unit automatically prevents the battery from discharg-
ing when the bettery is subjected to heavy loads. This manifests itself by the fol-
lowing:
› The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
› Where appropriate large convenience consumers, e.g. seat heaters, rear win-
dow heaters, have their power limited or in case of emergency shut off com-pletely.
CAUTION
■ Despite such intervention by the vehicle electric system management, the vehi-
cle battery may be drained. For example, when the ignition is switched on a long
time with the engine turned off or the side or parking lights are turned on during longer parking.■
Consumers which are supplied via a 12 V socket can cause the vehicle battery to
discharge when the ignition is switched off.
Note
Driving comfort is not disrupted by any shutting off of consumers. Often the driv-
er is not aware of it having taken place.
180General Maintenance

CAUTION■If a spare wheel is used that is not identical to the fitted tyres, the following
must be observed » page 184, Spare wheel .■
Protect the tyres from contact with oil, grease and fuel.
■
Replace lost dust caps.
■
If, in the event of a puncture, it is necessary to fit a spare wheel with a tyre
without a dedicated running direction or the opposite running direction, drive carefully as the optimum characteristics of the tyre are no longer applicable in
this situation.
■
The tyre control display does therefore not replace the regular tyre inflation
pressure control, as the system cannot detect an even loss of pressure.
■
The system cannot warn in case of very rapid tyre inflation pressure loss, e.g. in
case of sudden tyre damage. In this case carefully bring the vehicle to a standstill
without sudden steering movements or sharp braking.
■
To ensure a proper functioning of the tyre control display, it is necessary to re-
peat the basic setting every 10 000 km or once a year.
For the sake of the environment
Tyres which are insufficiently inflated increase your fuel consumption.
Note
■ We recommend that any work on the wheels or tyres is carried out by a ŠKODA
Partner.■
We recommend that you use wheel rims, tyres, full wheel trims and snow chains
from ŠKODA Original Accessories.

Tyre lifeFig. 155
Tyre tread with wear indicators/Open fuel filler flap with a table de-
tailing the tyre size and tyre inflation pressure
Fig. 156
Changing wheels around
First read and observe the introductory information and safety warn-
ings on page 181.
The life of tyres depends on the inflation pressure, driving style, and other cir-
cumstances. If you follow the advice below you can extend the life of your tyres.
Tyre pressure
Check the tyre pressure, including that of the spare wheel, at least once a month and also before setting off on a long journey.
The tyre inflation pressures for summer tyres are indicated on the inside of the
fuel filler flap » Fig. 155 –
. The inflation pressures for
winter tyres are 20 kPa
(0.2 bar) higher than those for summer tyres.
The tyre pressure should be at the highest pressure specified for your vehicle at all times. 
182General Maintenance

240 km/h
270 km/h
Load index
This indicates the maximum permisible load on each indvidua tyre.
615 kg
630 kg
650 kg
690 kg
730 kg
775 kg
CAUTION
The information about the speed symbol and load index are listed for your vehicle in your vehicle documents.
Unidirectional tyres
First read and observe the introductory information and safety warn-
ings
on page 181.
The direction of rotation of the tyres is marked by arrows on the wall of the tyre.
The so specified running direction must absolutely be complied with. Only then
are the tyres able to provide the optimal properties in terms of grip, low noise,
wear-and-tear and aquaplaning.

Spare wheel
Fig. 157
Luggage compartment: Spare
wheel
VW919293959799First read and observe the introductory information and safety warn-
ings on page 181.
The spare wheel is located in a well under the floor covering in the luggage com-
partment and is fixed in place with a special bolt » Fig. 157.
Before removing the spare wheel, the box containing the vehicle tool kit must be removed.
If the dimensions or design of the spare wheel differ from the tyres fitted to the
vehicle (e.g. winter tyres or low-profile tyres), it must only be used briefly in the
event of a puncture and if an appropriately cautious style of driving is adop-
ted »
.
Install a wheel having the appropriate version and dimensions as soon as possi-
ble.
Spare wheel
A warning label is displayed on the rim of the spare wheel.
Please note the following if you intend to use this wheel.
› The warning label must not be covered after installing the wheel.
› Be specially attentive when driving.
› The inflation pressure for the spare wheel is identical to the maximum inflation
pressure of the standard tyres. The spare wheel R 18 must have an inflation
pressure of 420 kPa!
› Only use this temporary spare wheel to reach the nearest ŠKODA specialist ga-
rage as it is not intended for continuous use.
› No other summer or winter tyres must be mounted on the rim of the spare
wheel R 18.
WARNING■ Never use the temporary spare wheel if it is damaged.■If the dimensions or design of the temporary spare wheel differ from the fit-
ted tyres, never drive faster than 80 km/h (or 50 mph).■
Avoid accelerating at full throttle, sharp braking and fast cornering.
CAUTION
Observe the instructions on the warning label on the spare wheel.
184General Maintenance

While pressing the button, the warning light  lights up. At the same time the
system memory is erased and the new calibration is started, which is confirmed
with an audible signal and then the warning light  goes out.
If the warning light  does not go out after the calibration, this indicates a sys-
tem fault. Seek help from a ŠKODA specialist garage.
The rolling circumference of the tyre can change if: › the tyre inflation pressure is too low;
› the structure of the tyre is damaged;
› the vehicle is loaded on one side;
› the wheels of an axle are loaded heavily (e.g. when towing a trailer or when
driving uphill or downhill);
› snow chains are mounted;
› the spare wheel is mounted;
› one wheel per axle was changed.WARNING■
When the warning light  illuminates, immediately reduce the speed and
avoid sudden steering and brake manoeuvres. Stop the vehicle as soon as
possible and inspect the tyres and their inflation pressure.■
Under certain circumstances (e.g. sporty style of driving, wintry or unpaved
roads) the warning light  can be delayed or does not light up at all.

Wheel bolts
First read and observe the introductory information and safety warn-ings
on page 181.
Wheels and wheel bolts are matched to each other in terms of design. Each time
you fit other wheels, e.g. light alloy wheels or wheels with winter tyres, you must
also use the matching wheel bolts of the correct length and shape of spherical cap. This is essential to ensure that the wheels are tightly fitted and that the
brake system operates properly.

Winter tyres
First read and observe the introductory information and safety warn-
ings
on page 181.
The handling of your vehicle will be significantly improved when driving on wintry roads if you fit winter tyres. Summer tyres on ice, snee and at temperatures be-
low 7 °C have less grip. This is especially true of low-profile tyres or high-speed
tyres .
To achieve the best possible handling properties, winter tyres must be fitted on
all 4 wheels, the minimum tread depth must be 4 mm and tyres must be no older than 4 years.
Winter tyres of a lower speed category can be used provided that the permissible
maximum speed of these tyres is not exceeded even if the possible maximum
speed of the vehicle is higher.
The winter tyres speed limit is set in the menu » operating instructions for Info-
tainment , chapter Setting vehicle systems (CAR button) .
For the sake of the environment
Fit the summer tyres on again in good time as they provide better handling prop-
erties, a shorter braking distance, less tyre noise, and reduced tyre wear on roadswhich are free of snow and ice as well as at temperatures above 7 °C. The fuelconsumption is also lower.
Snow chains
First read and observe the introductory information and safety warn-
ings
on page 181.
When driving on wintry roads, snow chains improve not only traction, but also the
braking performance.
Snow chains must only be mounted on the front wheels.
For technical reasons, it is only permissible to fit snow chains with the following wheel/tyre combinations.
Wheel sizeDepth (D)Tyre size6J x 15 a)43 mm195/65 R156J x 16 b)48 mm205/55 R166J x 17b)48 mm205/50 R17a)
Only fit snow chains with links and locks not larger than 13 mm.
b)
Only fit snow chains with links and locks not larger than 12 mm.
Remove the full wheel trims before installing the snow chains. 
186General Maintenance