I got my 2003 GX470 half a year ago with 200k miles. Since then I completely redone suspension, timing belt/pump, all sorts of reliability improvements, lights, tires, lift. Basically a brand new car right now. However there are a few gremlins with the NAV system and the volume control. The screen wont go into NAV, or anything besides AC or Music controls. Additionally the volume knob does not change the volume, but it still can turn off the radio. The steering wheel controls still work for adjusting volume. Did anyone else experienced these problems and found a solution to solve them? I know I can change the unit to tesla screen one or have some other options, but after spending a fortune upgrading everything I just want to keep everything as is and functional. Thank!
