My 2006 model S40 2.4i has had on-going AC problems. The last episode was a leaking evaporator -- very $$ to fix. Now after 2 years from that my AC fails when the car has been sitting in hot sun. But then works. Seems like it could be low again on the working fluid. Any one having this or other AC problems with this model?
Had the same problem with my 2000 V70. Dealer wanted to replace both compressor and evaporator. They found evaporator was leaking. I replaced that first and it fixed the problem. Compressor shuts down when it senses low refrigerant.