In spring 2007 (Mother's Day), my 2005.5 TDI manual transmission would not start. Towed to local dealer (NOT who I bought it from), who worked on it for three days and replaced several components saying that there was a wiring issue that "shorted out" several components.
Several months later (September) it wouldn't start again. It turned out that the whole wiring harness needed to be replaced. After several b & m calls to Customer Service, VW paid for the harness, I had to pay for the labor. Their part about $350, my part about $1160. It was out of warranty due to miles (I put almost 48k in 2 years).
I love my Jetta, but this really hurt. I felt that, even though it was out of warranty, it is NOT reasonable to expect that the wiring harness would fail in the lifetime of a vehicle. I'm posting this message to make others aware of the problem.[teacher]