I just received news that the same thing happened to my 2020 Lexus RX 350 L. It only has 30,000 miles on it. The dealership mechanic said he had to scope it with a camera to find the problem.
A rodent apparently chewed through the electrical tape, split loom, and severed off a piece of one of the two wires. I was told $900 for labor only, plus parts, and tax. I'm thinking about $1,200 to $1,300 when all said and done?I was told that the exhaust intake cover and gasket would have to be removed to get to it. The odd thing, other than the "completely severed wire" is that I have a check engine light, which does give that code to replace knock sensor and I also have a " PARKING SUPPORT BRAKE MALFUNCTION GO SEE DEALER" message on my dash board, along with another dashboard error light indicating the my back up sensor warning system is off. They all came on at the same time. Car was driving fine for a few days, around town for about 100 miles after all this happened then it started to run a little sluggish. I was trying to research stuff before I took into the dealer, cause we all know how costly that can be. I think I'm at there mercy though, cause I don't have time to take it somewhere else and I really don't want to try and tackle this myself, even though I am pretty handy, I'm not a mechanic.
