Thanks everybody for your help, we appreciate your prompt replies. Our VX is still having problems. Alan's replaced the TOD module under the passenger seat with one out of a salvaged vehicle. He also has changed the transmission fluid and checked it with the vehicle running and in park, also ran through all the gears. He also replaced the fluid in the transfer case and filled it to the filler hole, however the TOD light on the dashboard does not illuminate AT ALL like we read it was supposed to. I wonder if its possible the module that we have does not work or if it is the mode switch possibly. He has checked all connections that he could find and cleaned and replaced as needed. Vehicle still doing the same as before.