1> The irritating ones are 3rd party/ Filmy songs one. Very cheap and dose'nt serve the purpose.
2> All my cars came with OEM
reverse tones. They use the security hooter to make small beeps. The beeps aren't that loud and I am actually thankful for them. They're useful when reversing in crowdy ares. Because most people don't even recognize reverse lights.
3> GrandRK, Please visit HASS and get it disconnect with a small fee. The safest way.