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Just found my first fault with my Tig.
Turned the a/c on the other day and it was blowing cool not cold, so thinking it just needed re-gassing I bobbed into to a Kwik-fit that I was driving by. They started to gas it, but as the gas was being fed in it started leaking back out through what looks to be a delphi sensor on the a/c pipe that comes out of the compressor. In true Kwik-fit style, the 'mechanic' didn't have a clue what to do so, after waiting for all the gas to leak out I took it to a VW dealer. First service mechanic there said new pipe work needed from compressor, about £200. Second mechanic said just needs a new sensor then maybe a re-program, about £70. Took it to my local VW dealer yesterday and they tried saying it needs a complete air-con overhaul with a price of about £450.
Anyone had a similar problem? How was it resolved? Can you identify the black sensor part in the photo (maybe even a part number) - my VW dealer has said they would need it booking in to remove and identify the part!?
Thanks in advance
 

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MyTiguan Master
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It still amazes me that top ups are legal.

That is one of the pressure sensors. If the Tig was here, we would test the system with dye, find the leak and repair accordingly. If it's leaking at the sensor, replace it first and re-test. If such testing was not performed, then any repairs are pure speculation.
 

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It still amazes me that top ups are legal.

That is one of the pressure sensors. If the Tig was here, we would test the system with dye, find the leak and repair accordingly. If it's leaking at the sensor, replace it first and re-test. If such testing was not performed, then any repairs are pure speculation.
In the UK I don't think they are now, I recall a chat last summer with a BMW technician who specialised in these sort of things at the BMW dealership, and he said that new laws had been introduced, which supposedly were to ensure only trained personal with the right qualification could work on the repair and re-gassing of AC units. Apparently it's illegal to allow the gasses to just escape into the air.

They were doing a special deal, where they checked and re-gassed the AC if it's needed when my car went in for it's 3rd year service, prior to re-gassing if there's a suspected issue. They are supposed to use a special coloured dye which shows up any leaks easily, which apparently is harmless, and only re-fill once they know the units okay.

I don't know how true that is, but makes sense, I don't think you can now buy the cheap cannisters of AC gas for doing it yourself as you once could from Halfords and other places, at least not legally in the UK anyway. Also, I believe they have switched to a special less toxic type of gas now.

£450 for a complete AC overhaul and service is not so outrageous as one may think, sadly £450 doesn't buy a lot these days, I got stung myself, just before I P/X my 3 series in for my Tig. I had a warning light come on the dash, no other symptoms that I noticed, but it turned out that the electronic hydraulic pump for the ABS system had failed,, the car was 2 weeks over the 3 yr warranty, cost for a new replacement was £1634, apparently they no longer did refurbished units as they had proved unreliable.

After a bit of hassle with the dealer, they managed to get BMW to pay half the cost as a customer relations gesture, so I had to pay £817..to turn that red light off. I was not a happy bunny, and TBH this was the reason I didn't go for another BMW this time around, as I've had 3 of them. All for the sake of 2 weeks. :mad2:
 
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