Lejas
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Posts posted by Lejas
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I have the same question. I have checked all fuses, twice, replaced all fuseable link fuses (one was bad - the 140 amp), disconnected the battery cables, and my navigation, audio and hvac have no power. I also have a check engine and VSC light, and ABS light displayed. Changing the 140A fuse did allow me to shift it out of park and brought the dash back online. I keep searching all the forums, and have found several other similar cases, but no one has posted a solution for bringing the HVAC, audio, and nav back online.
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I have an identical problem. I checked every fuse, replaced all of the fuseable links, and the big 140A fuse was blown. This brought the car back to life, sort of, but the AC Navigation / Radio are all dead. I've searched a lot of forums, and found similar problems, but no solutions about the radio/nav/ac unit. I was really hoping this was just a fuse, but double checked them with a tester. I have the Check Engine and VSC lights on as well, with 2000 max rpms. I would love to know what ultimately solved your problem.
Navigation Screen Blank
in 90 - 00 Lexus LS400
Posted
SOLVED - I checked all the fuses twice, had my son go over them all with a fuse meter, and finally, had my wife check the most likely blown fuses. She is much smaller than me, and discovered on the passenger kick panel, there is a row of fuses on the top that is covered by the carpet. So, when I was mapping which fuses to pull, the diagram was one row off. There is a fuse number 33 listed in the owners manual that is at the very top, concealed under the carpet. This was the fuse that controlled the AC / Nav and audio. So the solution is to find a very small person, maybe from a yoga class or the circus, and have them crawl up in that tight spot to pull the carpet back.
Another note: There are two fuse boxes under the hood. I had a fuel injection fuse blown in the second fuse box, too. Everything works perfectly now!