High pitch cabin noise (not pedestrian warning).
Bad news. I have run this up the ladder as far as possible with Toyota. After a few weeks of calling they sent an engineer out to my local dealer. The answer unfortunately was still āitās the noise the hybrid system makesā no farther explanation...
I also have the TH and Iāve narrowed down what this noise is coming from quite a bit. It drives me absolutely insane and there is seemingly no solution. It almost sounds like electrical interference?
You can only hear the noise when the engine is running. It only stops when the engine is not...