The Maxisys Elite is missing entirely the HVAC ECU on the 2008 Lexus GX470. Since I believe they are the same, it is probably missing also on the same model of these years - 2003 - 2009. The Maxisys Elite appears to simply not have support for this module. The HVAC ECU module, the entire HAVC system, works fine and has no problems.

Thanks for any help on this issue.

Omegaman