check engine SKODA OCTAVIA 2015 3.G / (5E) Owner's Guide

The coolant additive percentage in the coolant must be at least 40%.
The coolant additive may be increased to a maximum of 60%.
The correct mixing ratio of water and coolant additive is to be checked if nec-
essary by a specialist garage or is to be restored if necessary.
The description of the coolant is shown in the coolant expansion reservoir
» Fig. 207 on page 199 .WARNINGThe engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 194.■
The coolant is harmful to health.
■
Avoid contact with the coolant.
■
Coolant vapours are harmful to health.
■
Never open the end cover of the coolant expansion reservoir while the
engine 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 keep the coolant in the original container, safe from people who
are not completely independent, especially children - there is a danger of
poisoning!
■
If coolant is swallowed, consult a doctor immediately.
■
Never spill operating fluids over the hot engine - risk of fire.
CAUTION
■ If for some reason it is not possible to top up the coolant under the current
circumstances,  do not continue driving! Switch off the engine and seek as-
sistance from a specialist garage.■
If the expansion tank is empty, do not top up with coolant. The system could
aerate - risk of engine damage, 
do not continue driving! Switch off the en-
gine and seek assistance from a specialist garage.
■
The amount of coolant additive in the coolant must never be allowed to be
less than 40 %.
■
Over 60 % of coolant additive in the coolant reduces the antifreeze protec-
tion and coolant effectiveness.
■
A coolant additive that does not comply with the correct specification can
significantly reduce the corrosion protection of the cooling system.
■ Any faults resulting from corrosion may cause a loss of coolant and can con-
sequently result in major engine damage.■
Do not fill the coolant above the mark
A
» Fig. 207 on page 199 .
■
If an error occurs, leading to the engine overheating, the help of a professio-
nal garage is to be sought - there is a risk of serious engine damage occurring.
■
Additional headlights and other attached components in front of the air inlet
impair the cooling efficiency of the coolant.
■
Never cover the radiator - there is a risk of the engine overheating.
Note
On vehicles that are fitted with an auxiliary heater (auxiliary heating and venti-
lation), the coolant capacity is approx. 1 l larger.
Checking the coolant level
Fig. 207
Coolant expansion reservoir
Read and observe and on page 199 first.
The coolant expansion bottle is located in the engine compartment.
Coolant expansion reservoir » Fig. 207
Mark for the maximum permissible coolant level
Mark for the lowest permissible coolant level
The coolant level should be kept between the marks
A
and
B
.
The coolant can be checked and topped up, if the following conditions are sat-
isfied.
The vehicle is on a horizontal surface.
The engine is turned off.
The engine is not heated.
The bonnet is open. 
AB199Inspecting and replenishing

Checking the level›Check the coolant level in the coolant expansion tank » Fig. 207.
If the engine is warm, the test result may be inaccurate. The level can also be
above the mark A
» Fig. 207 .
In the event of an insufficient coolant level, a warning light 
is displayed in
the instrument cluster, as well as the relevant notification » page 37. 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 cooling sys-
tem. Do not merely top up the coolant. Have the cooling system checked by a
specialist garage.
Replenishing
Read and observe
and on page 199 first.
The coolant expansion tank must always contain a small amount of coolant» page 199, in section Introduction .
›
Place a cloth over the cap of the coolant expansion reservoir 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
this case, use just water and have the correct mixing ratio of water and cool-
ant additive restored by a specialist garage as soon as possible.
Only refill with new coolant.
Brake fluid
 Introduction
This chapter contains information on the following subjects:
Checking the brake fluid level
200
Specification
201
The brake fluid reservoir is located in the engine compartment » Fig. 208 on
page 200 .
WARNING■
The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 194.■
Do not use used brake fluid - the function of the brake system may be im-
paired – risk of accident!
CAUTION
■ Do not continue your journey if the fluid level has dropped below the “MIN”
marking » Fig. 208 on page 200 ,  do not continue driving - there is a risk of
an accident! Seek help from a specialist garage.■
Brake fluid damages the paintwork of the vehicle.
Note
■ The brake fluid is changed as part of a prescribed inspection services.■We recommend using brake fluids from the ŠKODA Original Accessories
range.
Checking the brake fluid level
Fig. 208
Brake fluid reservoir
Read and observe and on page 200 first.
The fluid can be checked if the following conditions are met.
The vehicle is on a horizontal surface.
The engine is turned off.
The bonnet is open.
Checking the level
›
Check the level of brake fluid in the reservoir » Fig. 208.
The level must be between the “MIN” and “MAX” markings. 
200General Maintenance

WARNING■The use of open flames and light should be avoided.■Smoking and radio triggering activities should be avoided.■
Never use a damaged vehicle battery – risk of explosion!
■
Never charge a frozen or thawed vehicle battery – risk of explosion and
caustic burns!
■
Replace a frozen vehicle battery.
■
Never jump-start vehicle batteries with an electrolyte level that is too low
– risk of explosion and caustic burns.
CAUTION
■ Improper handling of the vehicle battery may cause damage.■Ensure that battery acid does not come into contact with the bodywork – risk
of damage to the paintwork.■
If the vehicle has not been driven for more than 3 to 4 weeks, the battery will
discharge. Prevent the battery from discharging by disconnecting the battery's
negative terminal 
or continuously charging the battery with a very low
charging current.
■
Do not place the battery in direct daylight in order to protect the vehicle bat-
tery housing from the effects of ultra-violet light.
■
If the vehicle is frequently used for making short trips, the vehicle battery
will not have time to charge up sufficiently and may discharge.
Note
■ We recommend having all work on the vehicle battery carried out by a spe-
cialist garage.■
You should replace batteries older than 5 years.
Opening the cover
Fig. 209
Polyester cover of vehicle bat-
tery
Read and observe and on page 201 first.
The battery is located in the engine compartment. For some equipment var- iants, it is located underneath a polyester cover » Fig. 209.
›
Fold out the cover on the battery in the direction of the arrow.
The battery cover is installed in reverse order.
Checking the battery electrolyte level
Fig. 210
Vehicle battery: Electrolyte level
indicator
Read and observe and on page 201 first.
On vehicles with a vehicle battery fitted with a colour indicator, the electrolyte
level can be determined by looking at the change in colour of this display.
Air bubbles can influence the colour of the indicator. For this reason carefully
knock on the indicator before carrying out the check.
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
level cannot be checked.
Vehicles with the START STOP system are fitted with a battery control unit for
checking the energy level for recurring engine starts.
We recommend that you have the acid level checked regularly by a specialist
garage, especially in the following cases. ▶ High external temperatures.
▶ Longer day trips.
▶ After each charge. 

202General Maintenance

Winter time
The vehicle battery only has a proportion of the starting power in lower tem-
peratures. 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,
recharged by a specialist garage before the start of the winter.
Note
The battery acid level is also checked regularly by a specialist garage as part of
the inspection service.
Charging
Read and observe
and on page 201 first.
A properly charged vehicle battery is essential for reliably starting the engine.A charging operation can be performed if the following conditions are satis-
fied.
The engine is turned off.
The ignition is switched off.
All consumers are turned off.
The bonnet is open.
“Fast charging” with high currents
›
Disconnect both battery cables (first of all “negative”, then “positive”).
›
Attach the terminal clamps of the charger to the battery terminals (red =
“positive”, black = “negative”).
›
Plug the mains cable of the charger into the power socket and switch on the
device.
›
After charging has been successful: Switch off the charger and remove the
mains 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”).
Charging with low voltages
It is not necessary to disconnect the cables from the battery if you recharge
the vehicle battery, 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 low-
er) must be used until full charging is achieved.
The vent plugs of the vehicle battery should not be opened for charging.WARNING■ When you charge a battery, hydrogen is released, and a highly explosive
gas mixture is also produced. An explosion can be caused through sparkling
over during unclamping or loosening of the cable plug while the ignition is
on.■
Creating a bridge between the poles on the battery (e.g. with metal ob-
jects - cables) creates a short circuit - risk of damage to the battery, explo-
sion and burning of the battery, jets of acid spurting out.
■
Avoid creating sparks when working with cables and electrical devices.
Strong sparking represents a risk of injury.
■
Before carrying out any work on the electrical system, switch off the en-
gine, the ignition and all electrical components and disconnect the negative
terminal 
.
■
“Quick-charging” the vehicle battery is dangerous and requires a special
charger and specialist knowledge.
■
We therefore recommend that vehicle batteries be “rapidly charged” by a
specialist garage.
CAUTION
On vehicles with the START/STOP system or additional heating (auxiliary heat-
ing), do not connect the pole terminal of the charger directly to the negative
terminal of the vehicle battery, but rather only to the engine earth » page 219,
Jump-starting using the battery from another vehicle .
Replacing
Read and observe
and on page 201 first.
The new vehicle battery must have the same capacity, voltage, current and
size as the original battery. Suitable vehicle battery types can be purchased
from a specialist garage.
We recommend you have the battery replaced by a specialist garage.
Disconnecting and reconnecting
Read and observe
and on page 201 first.
Disconnecting
›
Switch off the ignition. 
203Inspecting and replenishing

›Firstly disconnect the battery's negative terminal
, followed by the positive
terminal .
Connecting›
Firstly connect the battery's positive terminal 
, followed by the negative
terminal 
.
After disconnecting and re-connecting the vehicle battery, the following func- tions or devices are partially or completely inoperative.
Function / deviceOperating measureElectrical power windows» page 64Panorama sliding/tilting roof» page 66Sun screen» page 66Time settings» page 31
CAUTION
■ Disconnect the vehicle battery only with the ignition turned off - there is a
risk of damaging the electrical system of the vehicle.■
Under no circumstances must the battery cables be connected incorrectly –
risk of a cable fire.
Note
■ After disconnecting and re-connecting the vehicle battery, we recommend
having the vehicle checked by a specialist to ensure that the full functionality
of all electrical systems is guaranteed.■
The data of the multi-function display will be reset.
Automatic load deactivation
Read and observe
and on page 201 first.
The vehicle's electrical system automatically prevents the battery from dis-
charging when the battery is being heavily used. This manifests itself by the
following. ▶ 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
vehicle 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
driver is not aware of it having taken place.204General Maintenance

Raising the vehicle›Insert the crank 7 into the mount on the jack 6» page 212.›
Support the base plate of the jack with its entire surface resting on level
ground and ensure that the lever is positioned vertically to the jacking point
» Fig. 222 .
›
Use the crank to raise the jack until its claw encloses the bar » Fig. 222.
›
Continue to raise the jack until the wheel is just lifted off the ground.
WARNING■
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 unexpect-
edly rolling away.■
Secure the base plate of the lifting jack with suitable means to prevent
possible 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 nec-
essary 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.
■
Only attach the lifting jack to the attachment points provided for this pur-
pose.
■
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.
■
When the vehicle is raised, never start the engine.
CAUTION
It is important to ensure that the jack is correctly attached to the bar of the
lower beam, as otherwise there is a risk of damage to the vehicle.
Remove the wheel / fix
When changing a wheel, the following instructions must be followed.
›
Remove the full wheel trim or the caps of the wheel bolts.
›
First of all slacken the anti-theft wheel bolt and then the other wheel bolts.
›
Jack up the vehicle until the wheel that needs changing is clear of the
ground.
›
Unscrew the wheel bolts and place them on a clean surface (cloth, paper,
etc.).
›
Remove the wheel carefully.
›
Attach the wheel and slightly screw on the wheel bolts.
›
Lower the vehicle.
› Tighten the wheel bolts opposite each other using the wheel wrench (alter-
nating crosswise). Tighten the anti-theft wheel bolt last.›
Replace the wheel trim and the caps.
When fitting unidirectional tyres, ensure that the direction of rotation is cor-
rect » page 207 .
All bolts must be clean and must turn easily.
If it is established when changing a wheel that the wheel bolts are corroded and difficult to move, then these must be replaced.
Under no circumstances grease or oil the wheel bolts!
WARNINGUndo the wheel bolts only a little (about one turn) as long as the vehicle
has not yet been jacked up. Otherwise the wheel could become loose and
fall off.
Follow-up tasks
After changing the wheel, the following work must be carried out.
›
Stow the replaced wheel in the wheel well and secure it with a special screw.
›
Stow the tool kit in the space provided and secure using the band.
›
Check the tyre pressure on the installed wheel as soon as possible.
›
Have the tightening torque of the wheel bolts checked with a torque wrench
as soon as possible.
After changing the wheel, the tyre pressure must be adjusted. In vehicles with
tyre pressure monitoring, save tyre pressure values » page 165.
Replace the damaged wheel or consult a specialist garage about repair op-
tions.
The prescribed tightening torque of the wheel bolts is 120 Nm.
WARNING■
If the wheel bolts are tightened to a too low tightening torque, the rim
can come loose when the car is moving. A tightening torque which is too
high can damage the bolts and threads and this can result in permanent
deformation of the contact surfaces on the rim.■
Drive cautiously and only at a moderate speed until the tightening torque
has been checked.
216Do-it-yourself

General informationRead and observe
on page 217 first.
For your own safety and the safety of your passengers, the following instruc-
tions must be observed before carrying out a wheel repair on the road.
Switch on the hazard warning light.
Place the warning triangle at the prescribed distance.
Park the vehicle as far away as possible from flowing traffic.
Choose a location with a flat, solid surface.
Have all the occupants get out. The passengers should not stand on the
road (instead they should remain behind a crash barrier, for instance) while
the wheel is being changed.
The breakdown kit must not be used under the following circumstances. ▶ The rim is damaged.
▶ The outside temperature is below -20 ° C.
▶ The cut or puncture is larger than 4 mm.
▶ The tyre wall is damaged.
▶ The expiration date has passed (see inflation bottle).
Preparations for using the breakdown kit
Read and observe
on page 217 first.
The following preparatory work must be carried out before using the puncture
repair kit.
›
Switch off the engine.
›
For vehicles with manual transmission select 1st gear.
›
On vehicles with
automatic transmission , place the selector lever in the P
position.
›
Firmly apply the handbrake.
›
Check that you can carry out the repairs with the breakdown kit » page 217.
›
Uncouple any trailers.
›
Remove the breakdown kit from the boot.
›
Stick the sticker
1
» Fig. 223 on page 217 on the dashboard in the driver's
field of view.
›
Unscrew the valve cap.
›
Use the valve remover
2
to unscrew the valve core and place it on a clean
surface (rag, paper, etc.).
Sealing and inflating the tyre
Read and observe
on page 217 first.
Sealing
›
Forcefully shake the tyre inflater bottle
10
» Fig. 223 on page 217 back and
forth several times.
›
Firmly screw the inflation hose
3
onto the tyre inflater bottle
10
. The film on
the cap is pierced automatically.
›
Remove the plug from the inflation hose
3
and plug the open end fully onto
the tyre valve.
›
Hold the bottle
10
with the bottom facing upwards and fill all of the sealing
agent from the tyre inflator bottle into the tyre.
›
Remove the filler plug from the tyre valve.
›
Screw the valve core back into the tyre valve using the valve remover
2
.
Inflating
›
Screw the air compressor tyre inflation hose
7
» Fig. 223 on page 217 firmly
onto the tyre valve.
›
For vehicles with manual transmission the lever into the neutral position.
›
On vehicles with automatic transmission , place the selector lever in the P
position.
›
Start the engine and run it in idle.
›
Plug the connector
6
into 12 volt socket » page 93.
›
Switch on the air compressor with the ON and OFF switch
9
.
›
Allow the air compressor to run until a pressure of 2.0 - 2.5 bar is achieved.
Maximum run time of 8 minutes » .
›
Switch off the air compressor.
›
If you cannot reach an air pressure of 2.0 - 2.5 bar, unscrew the tyre inflation
hose
7
from the tyre valve.
›
Drive the vehicle 10 metres forwards or backwards to allow the sealing agent
to “distribute” in the tyre.
›
Firmly screw the tyre inflation hose
7
back onto the tyre valve and repeat
the inflation process.
›
Switch off the air compressor.
›
Remove the tyre inflation hose
7
from the tyre valve.
Once a tyre inflation pressure of 2.0 - 2.5 bar is achieved, you can continue the journey. 
218Do-it-yourself

Replacing the rear window wiper bladeFig. 237
Rear window wiper blade
Read and observe
on page 225 first.
Removing the wiper blade
›
Lift the wiper arm from the window in the direction of
1
» Fig. 237 .
›
Tilt the wiper blade to the stop in the same direction.
›
Hold the upper part of the wiper arm and press the securing mechanism
A
in the direction of arrow
2
.
›
Remove the wiper blade in the direction of the arrow
3
.
Attaching the windscreen wiper blade
›
Push the windscreen wiper blade to the stop until it locks into place.
›
Check that the windscreen wiper blade is correctly attached.
›
Fold the windscreen wiper arm back to the windscreen.
Fuses and light bulbs
Fuses
 Introduction
This chapter contains information on the following subjects:
Fuses in the dash panel – LHD
227
Fuses in the dash panel – RHD
227
Assignment of the fuses in the dash panel
228
Fuses in the engine compartment
229
Assignment of fuses in the engine compartment
229
Individual electrical circuits are protected by fuses.
Switch off the ignition and the corresponding power consuming device before
replacing a fuse.
Find out which fuse belongs to the component that is not operating
» page 228 , Assignment of the fuses in the dash panel or » page 229 , Assign-
ment of fuses in the engine compartment .
Electrically adjustable seats are protected by automatic circuit breakers, which
switch on again automatically after a few seconds after the overload has been
eliminated.
Colour coding of fuses
Fuse colourMaximum amperagelight brown5dark brown7.5red10blue15yellow/blue20white25green/pink30orange/green40red50 226Do-it-yourself

WARNINGAlways read and observe the warnings before completing any work in the
engine compartment » page 194.
CAUTION
■
“Never repair” fuses, and do not replace them with fuses of a higher amper-
age – risk of fire! This may also cause damage at other points in the electrical
system.■
If a newly inserted fuse blows again after a short time, have the electrical
system checked as quickly as possible by a specialist garage.
■
A blown fuses is recognisable by the molten metal strip. Replace the faulty
fuse with a new one of the same amperage.
Note
■
We recommend always carrying replacement fuses in the vehicle. A box of
replacement fuses and bulbs can be purchased from ŠKODA Original Accesso-
ries.■
There can be several power consuming devices for one fuse.
■
Multiple fuses may exist for a single power consuming device.
Fuses in the dash panel – LHD
Fig. 238
Storage compartment on the
driver's side: LHD
Read and observe and on page 227 first.
On left-hand drive vehicles, the fuse box is located behind the storage com- partment in the left-hand section of the dash panel.
Replacing fuses
›
Open the storage compartment » page 90.
›
Grab hold of the storage compartment in the area of the arrows » Fig. 238.
›
Fold out the storage compartment by pulling in the direction of arrow
1
.
›Remove the plastic clip under the cover of the fuse box in the engine room
» Fig. 242 on page 229 .›
Place the clip onto the respective fuse and pull the fuse out.
›
Insert a new fuse.
›
Replace the bracket at the original position.
›
Fold back the storage compartment by pressing into the secured position in
the dash panel in the direction of the arrow
2
.
›
Close the storage compartment.
Fuses in the dash panel – RHD
Fig. 239
Storage compartment on the front passenger's side: RHD
Read and observe
and on page 227 first.
On right-hand drive vehicles, the fuse box is located on the front passenger's side behind the stowage compartment in the left-hand section of the dash
panel.
Removing the storage compartment and replacing the fuse
›
Insert a screwdriver under the side cover » Fig. 239.
›
Unlock the cover in the direction of the arrow
1
.
›
Push the cover out in the direction of the arrow
2
.
›
Open the storage compartment.
›
Insert a screwdriver from the side into the dash panel in the direction of ar-
row
3
.
›
Use the screwdriver to unlock the brake rod
A
of the storage compartment
in the direction of arrow
4
.
›
Remove the storage compartment in the direction of the arrow
5
.
›
Remove the plastic clip under the cover of the fuse box in the engine room
» Fig. 242 on page 229 .
›
Place the clip onto the respective fuse and pull the fuse out. 
227Fuses and light bulbs

No.Consumer8Lambda probe9Ignition, glow plug system, engine components10Fuel pump, ignition11Electrical auxiliary heating system12Electrical auxiliary heating system13Automatic gearbox14Windscreen heater - right15Horn16Ignition, fuel pump17ABS, ESC, motor control unit, relay coil for the heated windscreen18Databus, battery data module19Windscreen wipers20Alarm21Windscreen heater - left22Engine control unit23Starter24Electrical auxiliary heating system31Not assigned32Not assigned33Not assigned34Haldex clutch35Not assigned36Not assigned37Aux. heating38Not assigned
Bulbs
Introduction
This chapter contains information on the following subjects:
Bulb arrangement in the headlights
231
Replacing the low beam bulb
231Change bulb for long-distance, daytime running lights and parking light
switch232
Change bulb for additional parking light
232
Change bulb for fog light switch - Variant 1
232
Change bulb for fog light switch - Variant 2
233
Replacing the bulb for the licence plate light
233
Rear Light
234
Replacing bulbs in the rear light - Variant 1
235
Replacing bulbs in the rear light - Variant 2
235
Some manual skills are required to change a bulb. For this reason, we recom-
mend having bulbs replaced by a specialist garage or seeking other expert help
in the event of any uncertainties.
▶ Switch off the ignition and the relevant 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 luggage compartment.
We recommend having the headlight settings checked by a specialist garage
after replacing a bulb in the low, high or fog beam.
In case of failure of a xenon gas discharge lamp or an LED diode, visit a special- ist garage.
WARNING■ Always read and observe the warnings before completing any work in the
engine compartment » page 194.■
Accidents can be caused if the road in front of the vehicle is not suffi-
ciently illuminated and the vehicle cannot or can only be seen with difficul-
ty by other road users.
■
Bulbs H7 H8 and H15 are pressurised and may burst when changing the
bulb - risk of injury! We therefore recommended wearing gloves and safety
glasses when changing a bulb.
■
Do not carry out any work on the Xenon gas discharge lamps - risk of
death!
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,
napkin, or similar. 230Do-it-yourself