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Hello Phil, Many thanks for the update, and pleased to hear you have managed to find the correct sized O ring. Such items, and assortments of copper and fibre washers are generally available as boxed assorted sizes quite cheaply on line, and sometimes even in Lidl. Well worth investing in. Kind regards, Gareth.

Hi either the SRS has an existing fault in which case as Magnet suggested would have meant that the airbag light was on permanently before the accident or the car has had an accident in the past and some clever clogs has put resistance diodes on the wiring as its cheaper than buying airbags, the diodes make the system think that when it is running through its check cycle that all is well as its getting the correct resistance signal from the diode regardless of the bag being inoperative. BMW tried to get round this a few years ago as cars that were crashed were appearing with no airbag deployment due to being diode equipped so they introduced a rather clever random voltage spike into the SRS check cycle with would blow the cheap diode and produce a light, under normal circumstances when all was in order the spike in voltage would not affect the bag units as they were designed to allow for this spike and carry on working as intended. Steve.

Hi, its lucky it still feels cool you are supposed to regas every four years otherwise the moisture in the system builds up and rots the cods out of the condenser and evaporation units, I would get it done while you are ahead most regassing machines these days dredge out all the old gas and compressor oil and then pressure test the system if it passes it fills the system with new oil and gas, the old gas is run through a recycle and cleaned up, thats where the garages will make a profit from using the cleaned gas on the next vehicle, believe me you will notice the difference. Steve.