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Is there a writeup somewhere or some tips for DIY AC Recharge? The air doesn't seem to be working as well as before. Thanks in advance!
 

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1 word - dont.

Unlike many AC systems, your jetta does not has a sight glass window so you can't tell when it's full. Too much and too little will damage the system. I think there's a 20,000 fine for releasing freon into the air. You are supposed to use a vacuum machine to pull it out and then take it to a recycler.

All modern AC systems use the same type of freon, I forget what type it is, but you can get it at the parts store if you are feeling brave. I would just take it to a pro for this one. Plus, if it is leaking out, a pro will have a machine which can take out your freon, put in a flourescent dye and see where it's leaking from. I tried recharging an old car and it just leaked out a month later.

Also try checking the air filter for the cabin.

For regular maintenance of the system, run the AC once a month for a little while, even in the winter and it'll keep the AC system working forever.
 

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A cause of leaking is small seeps, when you go to use it in the spring, it oils the o rings and it seals up the system.

Each winter you loose a little refrig. Just running it 2-3 times during the winter should help keep the ac system in working order.
 

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cadman1940

May I throw a thought. The defroster is suposed to cycle the compresser to remove moisture from the air in the defrost cycle. I know this is the way the domestic cars work. Thanks eric davis AKA cadman1940
 
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