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My IS250's navigation screen climate control stopped working. I noticed that the screen would just turn off a couple of times while driving, then the screen would turn black and had lines and it would freeze and my bluetooth won't connect. I turned the AC on right before it totally gave out, and so there is no way for me to turn it off as the buttons don't work. So I took it someone and he made it worse and now i can't put my windows down, so i finally took it to the dealer and they said i need to get the whole thing replaced. Does anyone know where i can get one for a reasonable price.
You can usually find used units on eBay for a fraction of the price of new.
The windows thing is probably because he disconnected the battery; you can reset them by following the instructions linked in the FAQ thread at the top of the forum; see here: https://www.clublexus.com/forums/is-...isconnect.html
You can probably turn off your a/c by using voice command. Try pushing the talk button on the steering wheel and saying "air conditioner off" (hope I remembered that right)
For the window go to each door and roll it down half way and hold it up for about 5 second. Have to do it on all the door not with driver side control.