Air Con not working....at all.

[Chesto18]

Hi,

Getting a bit fed up with my non-working air con in all this heat!

I’ve done a fairly comprehensive search on here and it appears it could be a number of things, but here are my symptoms

Essentially pressing the AC button does nothing at all. No cold air, no change in the temp of the air coming through. Neither fan activates after pressing the switch.

Any ideas where to start? Fuses? Recharge? Pressure switch?

Cheers

[Octoparrot]

My advice is take it to an Air Con specialist (not Kwik fit) and get it properly diagnosed as you say it could be one or several things.

[neilw]

Have you had it leak tested? Take it for a re-gas, if it's leaking they won't fill it, and normally not charge you. If you have a fault code reader that may give you some clues as well. The pressure switch can sometimes break, that's about £40 to replace, or the solenoid on the compressor can also fail.

If it's leaked then you can try and find the leak with a UV torch, and then go from there.

[rich83]

No gas.

Pressure switch faulty and leaked coolant.

Compressor f*cked.


Most likely to be one of those

[Chesto18]

Cheers guys. I think I’ll go down the re-gas route first and see what happens.

[mo]

Mine is intermitten. Has already been regassed so will replace the pressure switch before going down the compressor route.
Ordered one off Ebay for £10

[neilw]

Compressors are readily available on eBay for less than £40 too, if you willing to take a punt on a used one

[Cosmos]

My air con wasnt working recently even although i got it recharged last October.
The fans blew air through the vents,it just wasnt cool.Got the air con pressure switch replaced and another recharge and all is good now.

[mo]

Had my pressure switch changed and a regas and now working full time. Though doesn't seem to get as cold as other cars. Maybe that's normal. No complaints here tho

[pudding]

Agreed, it is pretty weak in the MK5, even with everything working properly.  My friends MK7.5 isn’t much colder either.  Must just be a VW thing.

[rich83]

Agreed, it is pretty weak in the MK5, even with everything working properly.  My friends MK7.5 isn’t much colder either.  Must just be a VW thing.

Really? My mk5 gets nice and cold.

[slim08]

This is a timely post.

My A/C hasn't been working properly... takes 15 mins to get cool(ish) air moving. I bought a re-gas kit online and went to top it up - and the pressure is too high already! I tried giving it a couple small squirts of new gas but didn't proceed any further.

Now the A/C will put out some cooler air, and more quickly, but I think something's wrong... pressure switch, ya'll recon?

[pudding]

It does get cold, just not as cold as other cars.  Maybe I’ll stick a thermometer in the vents and see what it’s kicking out.

[muff1991]

My air con in my previous GTI worked but wasn't that cold, i still think to this day something wasn't right, i'd get in other cars and be like... your air con is wicked!

My current GTI air con doesn't work at all... so keeping an eye on this thread, i don't know where to start with process of elimination tbh without wasting money!

[pudding]

I must admit, in today’s 35 deg heat, it was very welcome!  After a 20 min journey with it running full blast on LO, it was like stepping off a plane in Hong Kong, so I guess it does work.  Just takes too long (compared to other cars - like Vauxhalls ffs!) to chill the cabin.

First check is vag-com, then gas leaks, then condenser, then pump.  It can get expensive if it’s duff hardware.