engine SKODA CITIGO 2014 1.G Service Manual
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Page 109 of 164
The natural gas refuelling systems have an overfill protection relating to the
outdoor temperature. At very high outside temperatures, it may happen that
the gas tank may not be fully refuelled.
The natural gas system of your vehicle is suitable both for “slow fuelling” (fuel-
ling from small compressors) and for “quick fuelling” (fuelling from natural gas
stations with large compressors).
If the vehicle is parked for a longer period of time immediately after refuelling,
the situation may arise in which the pointer of the fuel tank gauge does not
indicate exactly the same level as was the case immediately after refuelling
when the engine is restarted. This is not due to any system leakages but a
drop in pressure in the natural gas fuel tank due to technical reasons after a
cooling phase directly after refuelling.
The maximum lifetime of the gas tank is 20 years.
The capacity of the natural gas fuel tank is about 11 litres, of which about 1.5
litres are in reserve.
The capacity of the gasoline fuel tank is about 10 litres, of which about 5 litres
are in reserve.WARNING■ When refuelling, never get into the vehicle. If you have to get into your
vehicle in exceptional cases, touch a metal surface before you touch the
filling coupling again. This will avoid electrostatic discharges, which may
generate sparks. Sparks can cause a fire during refuelling.■
Natural gas is highly explosive and highly flammable.
Note
During the filling process sounds are heard which are harmless. If you are un-
sure which service station staff to use, ask the petrol station staff.CNGFig. 94
CNG label
Fig. 95
Position of the CNG label
Read and observe and on page 103 first.
A natural gas vehicle (hereinafter referred to as CNG) may be operated with
CNG and gasoline.
In some countries, national legislation requires that vehicles with CNG opera-
tion be identified by one of the listed labels » Fig. 94.
Position of the CNG label » Fig. 95.
Natural gas quality and consumption
Depending on the natural gas supplier, the natural gas quality (heating value)
may vary. The engine control unit adjusts automatically to the natural gas
quality.
106General Maintenance
Page 110 of 164
Automatically switching over from natural gas mode to petrol mode
The vehicle automatically switches from natural gas to petrol, for example, if one of the following cases occurs.
› With an empty gas tank or not enough pressure in the tank.
› After refuelling with natural gas.
› At very low surrounding temperatures.
Gas smell
If you smell gas proceed as follows.
› Stop the vehicle.
› Put out cigarettes.
› Switch off the ignition.
› Open doors and the boot lid to ventilate the vehicle sufficiently.
› Remove any spark producing or incendiary items from the car and immedi-
ately switch off.
› Do not continue if the odour persists.
Seek help from a specialist garage to correct the gas system fault.
Regular gas system checks must be carried out in a specialist workshop on
natural gas-powered vehicles.WARNINGWhen operating a CNG-powered vehicle, the national legal requirements
must be observed.WARNINGDo not underestimate the smell of gas in the car or when refuelling - it may
result in fire, explosion and injury.
Engine compartment
Introduction
This chapter contains information on the following subjects:
Opening and closing the bonnet
108
Engine compartment overview
109
Radiator fan
109
Windscreen washer system
109WARNINGInjuries or scolding or risks of accident or fire may occur when working in
the engine compartment. For this reason, it is essential to comply with the
warning instructions outlined below and with the general applicable safety
rules. The engine compartment of your car is a hazardous area!WARNINGInstructions before beginning work in the engine compartment■Turn off the engine and withdraw the ignition key.■
Firmly apply the handbrake.
■
For vehicles with manual transmission the lever into the neutral position.
■
For vehicles with automated manual transmission, shift the lever to posi-
tion N.
■
Allow the engine to cool.
■
Never open the bonnet if you can see steam or coolant escaping from the
engine compartment – risk of scalding! Wait until no more steam or coolant
is escaping.
WARNINGInformation for working in the engine compartment■Keep all people, especially children, away from 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!
WARNINGInformation for working in the engine compartment with the engine run-
ning■
Pay particular attention to moving engine parts, e.g. V-ribbed belt, gener-
ator, radiator fan - 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 – risk to life! Always remove any jewellery,
tie back long hair and wear tight fitting clothing before completing any
work.
107Inspecting and replenishing
Page 111 of 164
WARNINGInformation for working on the fuel system or the 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.
WARNING■Read and observe the information and warning instructions on the fluid
containers.■
Keep the working fluids in sealed original containers and safe from peo-
ple who are not completely independent, e.g. children.
■
Never spill operating fluids over the hot engine - risk of fire.
■
If you intend to work underneath the vehicle, you must secure the vehicle
from rolling away and support it with suitable supporting blocks; the car
jack is not sufficient – risk of injury!
CAUTION
Always top up using the correct specification of fluids. This may result in major
operating problems and also vehicle damage!
For the sake of the environment
In view of the requirements for the environmentally friendly disposal of fluids and the special tools and knowledge required for such work, we recommend
that fluids be changed by a specialist garage.
Note
■ Please consult a specialist garage for any questions relating to fluids.■Fluids with the proper specifications can be purchased from the ŠKODA Origi-
nal Accessories or from the ŠKODA Genuine Parts ranges.Opening and closing the bonnetFig. 96
Bonnet release lever/release lever
Fig. 97
Securing the bonnet
Read and observe
and on page 107 first.
Open flap
›
Open the front door.
›
Pull the release lever under the dash panel in the direction of the arrow
1
» Fig. 96 .
Before opening the bonnet, ensure that the arms of the windscreen wipers
are correctly in place against the windscreen, otherwise the paintwork on the
flap could be damaged.
›
Press the release lever in the direction of the arrow
2
» Fig. 96 and the bon-
net is unlocked.
›
Grab hold of the bonnet and lift.
›
Remove the lid prop in the direction of arrow
3
from the holder » Fig. 97.
108General Maintenance
Page 112 of 164
›Secure the open flap by inserting the end of the post into opening 4.
Close the flap›
Lift the bonnet.
›
Decouple the bonnet support and press into the holder 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 .
WARNING■
Check that the bonnet is closed properly.■If you notice that the lock is not properly engaged while driving, stop the
vehicle immediately and close the bonnet – risk of accident!■
Make sure that when closing the bonnet, no body parts are crushed -
there is danger of injury!
CAUTION
Never open the bonnet by the locking lever » Fig. 96.
Engine compartment overview
Fig. 98
Principle sketch: Engine compartment
Read and observe
and on page 107 first.
Arrangement in the engine compartment » Fig. 98
Engine oil dipstick
110
Engine oil filler opening
111
Coolant expansion reservoir
112123Brake fluid reservoir113
Vehicle battery
113
Windscreen washer fluid reservoir
109
Radiator fan
Read and observe
and on page 107 first.
The radiator fan is powered by an electric motor. Operation is controlled ac-
cording to the temperature of the coolant.
WARNINGAfter switching off the ignition, the fan may intermittently continue to op-
erate for approx. 10 minutes.
Windscreen washer system
Fig. 99
Windscreen washer fluid reser-
voir
Read and observe and on page 107 first.
The windscreen washer fluid reservoir is located in the engine compart-
ment » Fig. 99 .
The cleaning fluid is provided for the cleaning of the front and rear window.
The capacity of the tank is about 3 litres.
Water alone is not sufficient to intensively clean the windscreen. We recom- mend using clean water together with a screen cleaner from the range of
ŠKODA Original Accessories (with antifreeze in winter), which will remove any
stubborn dirt.
456109Inspecting and replenishing
Page 113 of 164
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.■
Do not remove the filter from the windscreen washer fluid reservoir when re-
filling, as this may cause contamination of the liquid transportation system,
leading in turn to a windscreen washer system malfunction.
Engine oil
Introduction
This chapter contains information on the following subjects:
Specification
110
Checking the oil level
110
Replenishing
111
The engine has been factory-filled with a high-grade oil that can be use
throughout the year - except in extreme climate zones.
The engine oils are undergoing continuous further development. Thus the in- formation stated in this Owner's Manual is only correct at the time of publica-
tion.
ŠKODA Service Partners are informed about the latest changes by the manu-
facturer. We therefore recommend that the oil change be completed by a
ŠKODA Service Partner.
The specifications (VW standards) stated in the following can be indicated sep-
arately or together with other specifications on the bottle.
The engine oil should be changed after specified service intervals » page 30.
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 107.CAUTIONDo not pour any additives into the engine oil – risk of serious damage to the
engine parts!
Note
■ Before a long drive we recommend that you purchase and carry with you en-
gine oil which complies with the specification for your vehicle.■
We recommend that you use oils from ŠKODA Original Accessories.
■
If your skin has come into contact with oil, it must be washed thoroughly.
Specification
Read and observe
and on page 110 first.
Specification
EngineSpecification1.0 ltr./44 kW MPIVW 502 00, VW 504 00 a)1.0 ltr./55 kW MPIVW 502 00, VW 504 00a)1.0 l/50 kW MPI G-TECVW 502 00a)
Optional engine oil specifications.
Checking the oil level
Fig. 100
Principle sketch: Dipstick
Read and observe and on page 110 first.
The dipstick indicates the engine oil level .
Dipstick » Fig. 100
The oil level must be within this range.
A110General Maintenance
Page 114 of 164
The oil can be checked and topped up, if the following conditions are satisfied.The vehicle is standing on a horizontal surface.
The engine operating temperature is reached.
The engine is turned off.
The bonnet is open.
Checking the level›
Wait a few minutes until the engine oil flows back into the oil trough.
›
Pull out the dipstick.
›
Wipe the dipstick with a clean cloth and insert it again to the stop.
›
Pull the dipstick out again and check the oil level.
›
Re-insert the dipstick.
The engine consumes a little oil. The oil consumption may be as much as 0.5 l/
1 000 km depending on your style of driving and the conditions under which
you operate your vehicle. Consumption may be slightly higher than this during
the first 5 000 km.
The oil level must be checked at regular intervals.
In case of the oil level being too low, the display of the instrument cluster
shows the control symbol
» page 35 . Check the oil level using the dipstick as
soon as possible. Add oil accordingly.
CAUTION
■ The oil level must never be above the A range » Fig. 100 – there is a risk of
damaging the exhaust system!■
Stop driving if for some reason it is not possible to top up the engine oil
under the current conditions. Switch off the engine and seek assistance from a
specialist garage.
■
If the oil level is above the range
A
,
stop driving! Switch off the engine
and seek assistance from a specialist garage.
Replenishing
Read and observe
and on page 110 first.
›
Unscrew the cap of the engine oil filler opening » Fig. 98 on page 109 .
›
Replenish the oil in portions of 0.5 litres in accordance with the correct speci-
fications » page 110 .
›
Check the oil level » page 110.
›
Screw the lid of the engine oil filler closed carefully.
›
Pull the dipstick out as far as the stop.
Coolant
Introduction
This chapter contains information on the following subjects:
Checking the coolant level
112
Replenishing
112
The coolant provides cooling for the motor.
It consists of water and coolant additive with additives that protect the cooling
system against corrosion and prevents furring.
The coolant additive level 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 reser-
voir » Fig. 101 on page 112 .
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 107.■
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.
111Inspecting and replenishing
Page 115 of 164
CAUTION■ Do not continue if for some reason it is not possible to fill with coolant un-
der the current circumstances! Switch off the engine and seek assistance from
a specialist garage.■
If the expansion tank is empty, do not top up with coolant. The system could
fill with air - risk of engine damage,
stop driving! Switch off the engine and
seek assistance from a specialist garage.
■
The concentration of coolant additive in the coolant must never be under
40%.
■
Over 60% of coolant additive in the coolant reduces the antifreeze protec-
tion and cooling effect.
■
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
» Fig. 101 on page 112 .
■
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.
Checking the coolant level
Fig. 101
Coolant expansion reservoir
Read and observe and on page 111 first.
The coolant expansion bottle is located in the engine compartment.
Coolant expansion reservoir » Fig. 101
Mark for the maximum permissible coolant level
Mark for the lowest permissible coolant level
The coolant level should be kept between the marks “MAX” and “MIN”.
The coolant can be checked and topped up, if the following conditions are sat-isfied.
The vehicle is standing on a horizontal surface.
The engine is turned off.
The engine is not heated.
The bonnet is open.
Checking the level›
Check the level of coolant in the coolant expansion bottle » Fig. 101.
If the engine is warm, the test result may be inaccurate. The level can also be
above the mark “MAX” » Fig. 101.
In case of low coolant level in the instrument cluster a check mark
» page 35 . 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 111 first.
The coolant expansion tank must always contain a small amount of cool-
ant » page 112, in section Introduction .
›
Place a cloth over the cap of the coolant expansion tank and unscrew the
cap carefully .
›
Replenish the coolant.
›
Turn the cap until it clicks into place.
CAUTION
■
Only top up with new coolant.■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.112General Maintenance
Page 116 of 164
Brake fluid
Introduction
This chapter contains information on the following subjects:
Checking the brake fluid level
113
Specification
113
The brake fluid reservoir is located in the engine compartment » Fig. 102 on
page 113 .
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 107.■
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. 102 on page 113 , 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 compulsory inspection service.■We recommend using brake fluids from the ŠKODA Original Accessories
range.
Checking the brake fluid level
Fig. 102
Brake fluid reservoir
Read and observe and on page 113 first.
The fluid can be checked if the following conditions are met.
The vehicle is standing 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. 102.
The level must be between the “MIN” and “MAX” markings.
A slight drop in the fluid level results when driving due to normal wear-and-
tear and automatic adjustment of the brake pads.
There may be an indication of a leak in the brake system, however, if the fluid
level drops significantly within a short time or if it drops below the “MIN” mark-
ing.
Too low brake fluid level is indicated by the warning light illuminating in the
display of the instrument cluster » page 34,
Braking system
.
Specification
Read and observe
and on page 113 first.
The brake fluid must comply with the following standards or specifications:› VW 50114;
› FMVSS 116 DOT4.
Vehicle battery
Introduction
This chapter contains information on the following subjects:
Checking the battery electrolyte level
115
Charging
115
Replace
116
Disconnecting and reconnecting
116
Automatic load deactivation
116
The vehicle battery represents a power source for the motor to start and for
the supply of electrical consumers in the car.
113Inspecting and replenishing
Page 118 of 164
Checking the battery electrolyte levelFig. 103
Vehicle battery: Electrolyte level
indicator
Read and observe and on page 114 first.
On vehicles with a vehicle battery fitted with a colour indicator » Fig. 103, 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.
› Black colour – electrolyte level is correct.
› Colourless or light yellow colour – electrolyte level too low, the battery must
be replaced.
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 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.
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.■
For technical reasons, on vehicles with the description “AGM”, the electrolyte
level cannot be checked.
Charging
Read and observe
and on page 114 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 “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.
115Inspecting and replenishing
Page 119 of 164
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 consumers 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, 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 130.
Replace
Read and observe
and on page 114 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 having the battery replaced by a specialist garage, where the
new vehicle battery will be installed properly and the original battery will be
disposed of in accordance with national regulations.
Disconnecting and reconnecting
Read and observe
and on page 114 first.
Disconnecting
›
Switch off the ignition.
›Disconnect the negative terminal
first and then the positive terminal of
the battery.
Connecting›
Connect the positive terminal
first, then the negative
battery terminal.
After disconnecting and re-connecting the vehicle battery, the following func-
tions or devices are partially or completely inoperative.
Function / deviceOperating measureRadioEnter code » operating instruc-
tions for the radioTime settings» page 33
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 114 first.
The vehicle voltage control unit automatically prevents the battery from dis-
charging when the battery is put under high levels of strain. This manifests it-
self by the following.
› The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
› Where necessary, large convenience consumers such as seat heaters and
rear window heaters have their power limited or are shut off completely in
the event of an emergency.
116General Maintenance