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3 places the hdd can be under the seats in the back trunk hidden in wheel well or behind the glove box but your touch screen isnt of program cant be read as much as you need to reboot the system dealer can reboot dont take no for the answer they know how to do it but wont if aftermarket
My wife has the Lexus IS250 with Navigation and just this morning she tells me she wanted to raise the AC from Low to higher position, but that nothing on the Navigation screen is working. I tried what David mentions above, but the only fuse that had 15A on it was in xlnt condition. Any other suggestions? Dealer talks like $1500 and the system has always been mediocre at best. Thanks for any help.
If Lexus can't fix this there is nothing anyone here can do for it. Anything that can be done needs the proper scanning and reprogramming equipment only Lexus has. Being that the car is new when enough people complain about this they will come up with a fix, Their may be a recall on it in the future. But for now your going to have to live with it or trade the car in. I know you did'nt want to hear this but but if some yahoo directs you wrong it will cost you hundreds just to get the programming back to the way it is today. Some navigation systems if you disconnect the battery you will have to go to the dealer to get them to reprogram it. Use lots of caution when guessing. New cars are not made for the average back yard mechanic to touch.
does it say : program can not be read please conntact your dealer. and your 3 buttons on right side of the screen dont work and also your calendar? I have a same problem because i dissconnected battery.