2001 s40 one day A/C blowing nice and cold, next day nothing but warm air. Any ideas as I head to the dealer for a check tomorrow. Ouch. It may be windows down for the rest of the summer/fall.

 

Dealer found that the a/c tube below the battery had corroded due to leaking battery acid and has to be replaced - total bill $450. So here is a warning to all make sure that your battery doesn't leak, due to overfilling or it getting older, etc!