Skoda Workshop Service and Repair Manuals

Emptying and filling up gas line The components of the liquefied petroleum gas system, on which installation work should be carried out, must first of all be emptied. Empty gas line   Note t  Observe safety measures and rules for cleanliness when working on vehicles with liquefied petroleum gas system (LPG) → Chapter. t  The protective cover of the liquefied petroleum gas reservoir and the screws are sealed for safety reasons. When removing, do not damage any gasket and gasket rings.

–  Loosen the screws -arrows- on the cap of the multi-function valve and remove the cap -1-.   Note The waiting time for the change-over to LPG mode does not only depend on the lambda probe being ready for operation (waiting time at least approx. 30s) but also on the operational readiness of the complete LPG system. This may take a few minutes. For vehicles manufactured up to 12.2010 (exhaust emission standard EU-4)   Note t  A switch-over into the gas mode can take place after the engine temperature has risen above 30 °C and the engine speed has exceeded 1201 rpm. t  The engine always starts in the petrol mode. If the vehicle was operating in LPG mode before switching off the engine, the system will change over to LPG mode automatically and the conditions for the change-over are fulfilled.

–  Start engine and change fuel selector switch -E395- to gas mode -arrow A-. When in gas mode, the warning light „ON“-arrow B- lights up on the fuel selector switch -E395-. For vehicles manufactured as of 01.2011 (exhaust emission standard EU-5)   Note t  A switch-over into the gas mode can take place after the engine temperature has risen above 40 °C and the engine speed has exceeded 1201 rpm. t  The engine always starts in the petrol mode. The system will change over to LPG mode automatically if the conditions for the change-over are fulfilled. –  Start engine.

–  Press the -GAS- button in the centre console -arrow-. The text „System switches to petrol mode“ appears in the information display -3-.

If the engine switches successfully to LPG operation, this is displayed by the warning light -2- lighting up in the dash panel insert and the text „Engine is running in gas mode“ appears in the information display -3-.   Note Various texts concerning the complete LPG system are shown in the information display of the dash panel insert (including LPG fueling), e.g. „The gas mode is not possible at present. Owner's manual“ → Vehicle Operating Instructions. Continued for all vehicles

–  Close off the mechanical shut-off valve for the gas feed line -4- on the multi-function valve by turning it clockwise as far as the stop. For vehicles manufactured up to 12.2010 (exhaust emission standard EU-4) –  Wait until there is „no more“ gas in the liquefied petroleum gas system and a shortage of gas is indicated when the LED on the switch -E395- flashes and an acoustic signal can be heard. It is switched-over to the petrol mode. For vehicles manufactured as of 01.2011 (exhaust emission standard EU-5) –  Wait until there is „no more“ LPG in the liquefied petroleum gas system and a shortage of LPG is indicated by an acoustic signal.

At the same time, the text „System switches to petrol mode“ appears in the information display -3- of the dash panel insert. The warning light -2- in the dash panel insert goes out simultaneously. It is switched-over to the petrol mode. Continued for all vehicles

–  Disconnect the plug -1- from the valve for gas tank -N495-. –  Switch off the ignition and disconnect the negative pole of the battery. Fill up gas line

–  Connect plug -1- at valve for gas tank -N495-. –  Close off the mechanical shut-off valve -4- on the multi-function valve by turning it anti-clockwise as far as the stop.   Caution Check the liquefied petroleum gas system for tightness, for example using the gas leakage detector for natural gas vehicles -VAS 6227-. –  Connect the negative terminal of the battery. For vehicles manufactured up to 12.2010 (exhaust emission standard EU-4)   Note t  A switch-over into the gas mode can take place after the engine temperature has risen above 30 °C and the engine speed has exceeded 1201 rpm. t  The engine always starts in the petrol mode. If the vehicle was operating in LPG mode before switching off the engine, the system will change over to LPG mode automatically and the conditions for the change-over are fulfilled. t  The waiting time for the change-over to LPG mode does not only depend on the lambda probe being ready for operation (waiting time at least approx. 30s) but also on the operational readiness of the complete LPG system. This may take a few minutes.

–  Start engine and change fuel selector switch -E395- to gas mode -arrow A-. When in gas mode, the warning light „ON“-arrow B- lights up on the fuel selector switch -E395-. For vehicles manufactured as of 01.2011 (exhaust emission standard EU-5)   Note t  A switch-over into the gas mode can take place after the engine temperature has risen above 40 °C and the engine speed has exceeded 1201 rpm. t  The engine always starts in the petrol mode. The system will change over to LPG mode automatically if the conditions for the change-over are fulfilled. t  The waiting time for the change-over to LPG mode does not only depend on the lambda probe being ready for operation (waiting time at least approx. 30s) but also on the operational readiness of the complete LPG system. This may take a few minutes. –  Start engine.

–  Press the -GAS- button in the centre console -arrow-. The text „System switches to petrol mode“ appears in the information display -3-.

If the engine switches successfully to LPG operation, this is displayed by the warning light -2- lighting up in the dash panel insert and the text „Engine is running in gas mode“ appears in the information display -3-.   Note Various texts concerning the complete LPG system are shown in the information display of the dash panel insert (including LPG fueling), e.g. „The gas mode is not possible at present. Owner's manual!“ → Vehicle Operating Instructions. –  Switch off ignition.   Note t  The cap of the liquefied petroleum gas reservoir and the screws are sealed for safety reasons. When installing, do not damage any gasket and gasket rings. t  Replace gasket if damaged.

–  Attach the cap of the multi-function valve -1- with the screws -arrows-. Tighten screws to 2 Nm. –  Perform the gas system inspection (GSI) after filling up the gas line → BookletOctavia II. For vehicles manufactured up to 12.2010 (exhaust emission standard EU-4) –  Interrogate and erase the fault memory of the liquefied petroleum gas control unit (LPG) → Chapter. For vehicles manufactured as of 01.2011 (exhaust emission standard EU-5) –  Interrogating and erasing fault memory of engine control unit → Vehicle diagnostic tester.