SW 1140 worked great on my 2009 Passat Wagon in Canada. First got software loading error (SWL ERROR). Burnt another DVD-R at same 4x slow speed and restarted process, worked great, now 32GB SD card, thanks!

I followed the instructions and was able to upgrade the software on an RNS 510 / Part Number 3C0 035 684A. However, after the 1140 software install, the unit fan will not shut down and will run all night. Any ideas of what may be causing this? I ended up removing the fuse to avoid draining the battery but I am trying to figure out what to do next to try to resolve the problem. Thanks much! Javier