erm, sorry to interupt. I heard that somebody manage to solve the drum sound by driving using sat mode for 1 full tank. Then return back to cvt mode, sound disappear. Dunno whether coincident or not or its related to abs braking system work in tandem with engine braking in cvt, causing sensors pening. Maybe coz in full cvt engine braking is in infinite ratio, while sat fix ratio, almost same as normal at.Dunno what is the logic, but no harm done if trying.

Still no news on vendors about that. If have one. Ill will update it.

Sorry cant help much

im also dunno the reason. But as long it doesnt harm u, worth trying. But since its related to brakes, i think better try it in full town driving rather then hway driving where less brakes is applied. Full tank @ one week i think for city driving but depend on how long u travel to work in a day.

*this is not related to any solution from prtn, just share someone story. happy trying. Gtg now. Bye.