Another Volvo Forum topic regarding the death of a 2001 Volvo automatic transmission, this one with some insight by those with either mechanical and Volvo sales backgrounds.
Just to let everyone know, I (ME) was the beta tester for the stop/neutral software.
I had an early 01 (new) with almost immediate clunking issues. I complained starting in August 2000. The head engineer from Rockleigh came down. We have been friendly after I did some beta testing on an early 98 XC for Volvo.
Anyhow I got this very hush hush software around December 2000, after that and for 3 years, nary a single shifting issue and lo and behold, a couple of years later the stop-neutral disabling software came out…a few generations better than the one I (and I’m sure others after me) tested.