Hi,
I have a Lexus IS300H, with the premium nav system. It is a 2014 model. My issue is since couple days no sound comes out of my system and I can’t control the volume with the dial or control on the steering wheel. If I do a rest of the system it comes on for 30 secs and goes off again. All other buttons works and control for even changing source. I know it’s not the amplifier as you would still have control of the volume, this seems like a software issue.
I think I am on an old software please can someone let me know if they have had this issue I don’t really want to take it to Lexus for diagnosis of £190 per hour.
I have attached pics of the software version please can you let me know if this is an old version.