My 2019 NX Speed Camera Warning (SCW) was quiet & the volume could Not be increased.
However with Apple Car Play, Speed Camera detection excels.
When I got my 2021 version the Lexus Sat Nav was quiet but, on day one, the Lexus Nav up-dated on my drive via Lexus Connect.
After the Up-date, the SCW was even Quieter so it is a redundant System for me.
Tel