2012 SKODA CITIGO ESP

Vehicle running on CNG (compressed natural gas)
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Introduction
This chapter contains information on the following subjects:
Refuelling 106
Automatically switching over from CNG mode to petrol mode 107
Natural gas as fuel 107
Regular inspections of gas systems 108
Safe natural gas 108
Natural gas quality and consumption 108
WARNING
■ When operating a CNG-powered vehicle, the national legal requirements
must be observed.
■ If a fault occurs or a leak in the natural gas system is suspected or if you
smell gas, proceed as follows: ■Stop immediately and switch off the ignition (this will close the solenoid
valves on the natural gas tanks automatically);
■ Open the doors to ventilate the vehicle sufficiently;
■ Immediately extinguish cigarettes, and remove and switch off other spark-
or fire-causing objects from the vehicle immediately.
■ Seek help from a ŠKODA
specialist garage to correct the fault on the gas
system.
■ The following is considered faults on the gas system:
■ Gas leakage from any part of the gas system as well as an error on the
ventilation system.
■ Continuous gas venting through the safety valves.
■ Cracks or damage that could result in a gas leak.
■ Fault in the reduction device, the pressure regulator, gas mixer or in the
injection valves, the pressure gauge, the shut-off or check valves and tank
fixtures.
■ If gas flows into the gas mixer or into the injection valves though the en-
gine is stopped.
■ Exceeding the permissible limits for contaminants in the exhaust gas. WARNING (Continued)
■ A natural gas-powered vehicle must be shut down if no periodic testing of
pressure accumulators is performed or an approved component has been re-
placed by a non-approved component. The vehicle owner is responsible for
properly conducted tests.
■ The natural gas tanks must not be exposed to a heat source.
■ Always switch off the ignition in case of an accident or vehicle fire!
■ It is prohibited to drive into enclosed storage places, garages and similar
areas where it is specifically not allowed to enter with CNG-powered vehicles. Ð Refuelling
Fig. 96
Fuel filler
First read and observe the introductory information and safety warn-
ings on page 106.
The gas filler tube for refuelling with natural gas is located behind the fuel filler
flap next to the petrol filler tube.
The filling couplings of the natural gas refuelling systems may differ in handling.
When refuelling with natural gas at unfamiliar refuelling systems, you should
seek help from trained fuel station staff. If unsure, have the refuelling done by
trained fuel station staff.
The operating instructions of the refuelling system must always be followed.
Open fuel filler flap
›
Open the fuel filler flap with one hand.
› Remove the cap 1
» Fig. 96

from the gas filler tube 2
.
› Plug the filling coupling of the refuelling system on the gas filler tube 2
.
£
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106 General Maintenance

The fuel tank is full when the compressor of the refuelling system automatically
switches off. To stop the refuelling operation prematurely, press the
“Stop ” but-
ton of the refuelling system.
Closing the filler cap
› Check that the sealing ring 3
» Fig. 96
has remained in the gas filler tube. If it
has slipped onto the filling coupling, reinsert it into the gas filler tube.
› Plug the cap 1
onto the gas filler tube.
› Close the filler cap.
In the following situation, it is possible that the tank cannot be fully filled with
natural gas.
› At very high ambient temperatures. The natural gas refuelling systems have
overheating protection. When the ambient temperature reaches a predefined
value, the refuelling system automatically switches off.
› If the refuelling system has been in operation for a longer period, the filling
pressure of the natural gas refuelling system slightly drops. WARNING
■ Stop the engine before refuelling.
■ Always switch off your mobile phone, do not smoke and do not use open
flames when refuelling with natural gas – risk of explosion!
■ When refuelling, never get into the vehicle. If you have to get into your vehi-
cle in exceptional cases, close the door and 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 flammable. Incorrect refuelling or improp-
er handling of natural gas can cause a fire, an explosion and injuries. Note
■ The natural gas system of your vehicle is suitable both for fuelling from small
compressors (slow fuelling) and for fuelling from natural gas stations with large
compressors (quick fuelling). ■ Noises that occur during refuelling represent no risk.
■ 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 indi-
cate 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. ■
For frequent short-haul traffic, especially at low outside temperatures, the vehi-
cle is driven more frequently in petrol mode than in natural gas mode. This is why
the petrol tank runs empty faster than the natural gas tank.
■ The capacity of the natural gas tank is about 11 kg, of which about 1.5
kg are a
reserve.
■ The capacity of the petrol tank is about 10 l, of which about 5 l
are a reserve.Ð Automatically switching over from CNG mode to petrol mode
First read and observe the introductory information and safety warn-
ings on page 106.
The vehicle automatically switches over from CNG mode to petrol mode when the
following conditions are met:
› when starting the engine, if the coolant temperature is below 15 °C,
› when the natural gas tank is empty,
› after refuelling with natural gas. Ð Natural gas as fuel
First read and observe the introductory information and safety warn-
ings on page 106.
Natural gas is an alternative fuel for motor vehicles. Its main component is meth-
ane (CH 4). The rest is carbon dioxide and lower hydrocarbons.
The strict legal requirements for exhaust emissions of motor vehicles are decisive
for the current significance of natural gas. In direct comparison to all other fossil
fuels, natural gas is one of the fuels which cause the lowest emissions.
Natural gas is odourless and lighter than air. For safety reasons, it is saturated
with odorous substances, so that is perceived even in very small amounts. Ð
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107
Inspecting and replenishing

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. Then disconnect the positive ter-
minal (+).
■ When connecting the battery to the electrical system, first connect the positive
terminal (+) of the battery. Then connect the negative terminal
(-). Under no cir-
cumstances 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. Ð Checking the battery electrolyte level
Fig. 104
Vehicle battery: Electrolyte level
indicator
First read and observe the introductory information and safety warn-
ings on page 115.
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 117.
On vehicles with a vehicle battery fitted with a colour indicator, the so-called
magic eye » Fig. 104 , 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
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116 General Maintenance

We recommend that the battery is replaced by a ŠKODA Service Partner, where
the new vehicle battery will be installed properly and the original battery will be
disposed of in accordance with national regulations.
ÐAutomatic load deactivation
First read and observe the introductory information and safety warn-
ings on page 115.
An intelligent vehicle power management system automatically takes various
measures at high loads on the vehicle battery to prevent discharging of the bat-
tery: 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 consumers of power, e.g. seat heaters, rear window
heaters, voltage supply to the 12V power socket, have their power limited or in
case of emergency shut off completely. Note
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 lon-
ger parking. Driving comfort is not put at risk by any shutting off of consumers.
Often the driver is not aware of it having taken place. Ðä
118 General Maintenance

Note
■ We recommend using a tow rope from ŠKODA Original Accessories available
from a ŠKODA Service Partner. ■ Towing another vehicle requires a certain amount of practice. Both drivers
should be familiar with the particular points about towing a vehicle. Unskilled
drivers should not attempt to tow in another vehicle or to be towed in. ■ When towing, respect the national legal provisions, especially those which re-
late to the identification of the towing vehicle and the vehicle being towed. ■ The tow rope must not be twisted as it may in certain circumstances result in
the front towing eye being unscrewed out of your vehicle. ÐFront towing eye
Fig. 118
Front bumper: Cap/installing the towing eye
First read and observe the introductory information and safety warn-
ings on page 136.
The towing eye is stored in the box of the vehicle tool kit.
› Press on the lower area of the cover (arrow)
» Fig. 118 - 
to loosen the latch of
the cover.
› Remove the cap from the front bumper and leave it hanging on the vehicle.
› Screw in the towing eye by hand up to the stop
» Fig. 118 - . For tightening
purposes, we recommend, for example, using the wheel wrench, towing eye
from another vehicle or a similar object that can be pushed through the eye.
› To re-fit the cover after removing the towing eye, first insert the cover in the
bottom region then carefully press on the upper area of the cover. The cap must
engage firmly.
ä CAUTION
The towing eye must always be screwed in fully and firmly tightened, otherwise
the towing eye can tear when towing in or tow-starting. Ð 137
Do-it-yourself

›
Press the locking mechanism 1
and carefully open the cover in the direction of
the arrow.
› After the fuse has been replaced, fold the cover upwards in the opposite direc-
tion of the arrow so that it audibly latches.
Fuse assignment on the underside of the dash panel No. Power consumer
1 Telephone, radiator fan, instrument cluster, engine control unit
2 Diagnostic connection, AC compressor
3 Clutch pedal switch, brake pedal switch
4 Daytime running lights 5 Switch wiring harness
6 Headlamp beam adjustment, exterior mirror adjustment
7-8 Automated transmission 9 Airbag
10 Park Assist 11 Low beam
12 Rear fog light
13 Low beam
14 Rear window wiper 15 Light switch
16 Steering force assistance 17 Windscreen washer
18 Reverse light switch 19 Injection valves, coolant pump
20 ABS/ESP, switch wiring harness 21 Switch illumination, number plate light
22 Daytime running lights
23 Light switch
24-26 Switch wiring harness 27 Interior light
28 Diagnostic connector 29 Central control unit
30 Exterior mirror heater 31 Cooler fan, regulator valve, lambda probe No. Power consumer
32 Turn signal, brake light
33 Main beam
34 Instrument cluster, main beam 35 Not assigned
36 Cigarette lighter, 12-volt power socket 37 Air blower for heating and air conditioning
38 Radio 39 Panoramic sliding roof, horn
40 Engine control unit 41 Central locking system
42 Ignition module
43 Seat heaters
44 Fuel pump 45 Light switch
46 Rear window heater 47 Power windows - right
48 Horn 49 Windscreen wipers50 Fog lights 51 Power windows - left Ð
139
Fuses and light bulbs

Fuses in the engine compartment
Fig. 120
Engine compartment: Distribution board cover/fuses
First read and observe the introductory information and safety warn-
ings on page 138.
The fuses are located underneath a cover next to the vehicle battery
» Fig. 120.
› Press together the interlocks of the cover A
simultaneously and press the cov-
er upwards in the direction of the arrow.
› After the fuse has been replaced, place the cover on the fuse box and fold up-
wards in the opposite direction of the arrow so that it audibly latches.
Fuse assignment in engine compartment No. Power consumer
S1 ABS/ESP
S2 Radiator fan
S3 Battery management, control unit for radiator fan
S4 ABS/ESP S5 Central control unit
S6 Ignition lock, starter Ð
ä Fuses in the dash panel
Fig. 121
On the driver's side of the dash panel: Fuse box cover/Schematic di-
agram of the fuse box
First read and observe the introductory information and safety warn-
ings on page 138.
The fuses are located on the left-hand side of the dashboard behind a cover on
vehicles with the
START STOP system.
› Insert a suitably flat object, e.g. a screwdriver, into the slot in the region of the
arrow » Fig. 121, carefully prise out the cover and remove.
› After the fuse has been replaced, place the cover on the fuse box and press it
until it audibly latches.
Fuse assignment in the dash panel No. Power consumer
1 ABS/ESP
2 Instrument cluster
3 Radio, diagnosis
4 DC-DC voltage converter, starter relay 5 Not assigned
6 Air blower for air conditioning/heating 7 Control unit for the AC system
8 Not assigned 9 Right light
10 Left light £ ä
140 Do-it-yourself

In the extra-urban driving cycle, the vehicle is accelerated and decelerated in all
gears, corresponding to daily routine driving conditions. The driving speed varies
between 0 and 120 km/h.
The calculation of the combined fuel consumption considers a weighting of about
37
% for the intra-urban cycle and 63 % for the extra-urban cycle. WARNING
Do not exceed the specified maximum permissible weights - risk of accident
and damage. Note
■ If required, you can find out the precise weight of your vehicle by contacting a
ŠKODA

Service Partner.
■ Depending on the range of equipment, style of driving, traffic situation, weather
influences and vehicle condition, consumption values may deviate from the indi-
cated values. ÐDimensions
Dimensions (mm) Length 3563
Width 1641/1645a)
Width including exterior mirror 1910
Height 1478/1463b)
Clearance 136/121b)
Wheel base 2420
Track gauge front/rear 1428/1424a)
Valid for vehicles with rear side doors.
b) The value corresponds to the status with the Green tec package. ÐSpecifications and engine oil capacity
The engine has been factory-filled with a high-grade oil that can be use through-
out the year - except in extreme climate zones. Various oils can be mixed together when refilling.
Engine oils are, of course, undergoing continuous further development. Thus the
information 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

ŠKODA. We
therefore recommend that the oil change is completed by a ŠKODA Service Part-
ner.
The specifications (VW standards) stated in the following can be indicated sepa-
rately or together with other specifications on the bottle.
The oil capacities include oil filter change. Check the oil level when filling; do not
over fill. The oil level must be between the markings » page 111, Checking the en-
gine oil level .
Specifications and capacity (in l) Engine SpecificationFilling level
1.0 l/44 kW VW 502 00, VW 504 00a)
3.4
1.0 l/55 kW VW 502 00, VW 504 00a)
3.4
1.0 l/50 kW - CNG VW 502 003.4 a)
The use of an engine oil with the VW 504 00 specification requires the use of a fuel according to the
EN 228 standard » page 105, Unleaded petrol or a fuel of comparable quality. Note
■ Before a long drive we recommend that you purchase and carry with you engine
oil which complies with the specification for your vehicle. ■ We recommend that you use oils from ŠKODA Original Accessories. Ð146
Technical data