Having problems with your Lexus LS 430 ?
What causes the car computer to fry? - LS 430 Lexus Cars & Trucks
I had this issue once on a toyota. Minus the extra gadget, Toyota and Lexus cars are pretty much the same when it comes to how they are wired up since Toyota makes them. Check if the fuse blows up. This could be caused by a short. Inspect the wiring for exposed conductors or loose wires. The short may also occur between the fuse and the computer box where the fuse cannot protect it. Check also the rating of the fuse. It may be too high that it lets too much current in.
Repair Help & Product Troubleshooting for Lexus LS 430
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