I understood that with the auto, the car is a bit more noisy than the manual (maybe revving more in average), and Toyota decided to suppress noise enhancement in the auto cars, then.
I mean yeah, not much sense in that honestly. They implemented off-low-med-high for exactly that reason, put manual on medium and auto on low and let users tweak as they want, but apparently the system is not compatible/synced with automatic box. But yeah, that's a disappointment on my side.
