1) is common in City and BRV, try to put extra double tape where ever possible.
2) claim warranty
3) claim warranty
4) They get orangish after car wash or being wet, get normal when you drive.
I am starting to feel the brake switch every time I leave the pedal their Is a tick sound, will get it checked at 5000 km service. My car has done 4800 mine is also February 2022.