So I took my 2010 jetta tdi into the stealership for the 100k timing belt replacement (working too much now so I had no time to DIY). LOKEY VW in Clearwater fl. I picked up the car friday night, everything seemed ok, so I drove my jetta to work on saturday. On the way home from work, I turned on the a/c and the compressor would not engage. I drove back to the dealer and they brought it in to check the problem... they said the internal valve inside the compressor is stuck open. Long story short, they want $1700+ to replace the compressor, dryer, and system flush. Just odd that the a/c was working fine when I brought the car in for service... now no a/c!!! Any ideas?