Any news on this?
I have a '07
MK2 Leon 2.0 TFSI FR, on Friday (the hottest day so far!) my A/C stopped working!
I'm certain that it had been working perhaps two weeks before this but I've recently just been having the windows down.
~ First thing was to get it re-gassed and leak tested on Saturday morning- £50 @ halfords.
This didnt fix it - the mechanic said that it only had 100g of gas - supposed to have 525g.
He'd filled to the correct amount and still not working, no leaks. He reckoned that the compressor was knackered but quoting around £500 for the part!
~ Anyway, next port of call was to visit a friend who has a Ross-Tech VAGCOM tool.
No errors stored.
You can hear the engine lug down when A/C is turned on.
All sensors looked to be reading correctly when checked on the measuring blocks.
The only thing perculiar was that a % specified value for a fan was requesting around 19% when the actual was none, and another reading for the torque load on the compressor was low.
I know this is a bit useless but, after about 40mins of messing around with the diagnostics, it all worked fine, but we changed nothins.
The air started to blow cold and the load on the compressor went to 6-7 Nm and the % values for the fan started to match - I assumed that the low gas and the hot weather must've jammed up the compressor and the right amount of gas had unjammed it but..
It worked for a day and a half and now nothing again.
My friend with the Ross Tech tool is now away for a week but I dont suppose anyone has any bright ideas as to what it could be, Im assuming not the compressor as it did work, theres no leaks, its gassed up, all the temp sensors seem to be working.
Next I'll check the power to the compressor, and investigate the fans as we noticed this change.
If anyone has any ideas let me know,
Thanks.