Maybe I just havent paid much attention to this.... but now that I am finally happy with the Navi part of my F90...the Sound quality on this thing drives me crazy... The volume never seems to be constant. Touch a button on the head unit and it lowers the volume..... wait a bit and it goes back....but sometimes it gets louder....then softer... Its driving me crazy. Does anyone have any ideas?

I believe there is a setting to adjust volume dynamically. Turn it off. Sorry, I'm not near my unit to check for you.

I have tried every setting on the dynamic volume. I touch any button, my volume gets soft...then like 3 to 5 seconds later it starts rising... and i have to turn the volume down. Its annoying as hell

Dont know if you solved your problem but what kind of car do you have the unit installed in

My volume control started going nuts right after installing r3 firmware.

Whenever I use the steering wheel audio controls, the volume control becomes spastic. It ignores the actual steering wheel button inputs and then randomly increases and decreases on its own. I can use the stereo volume knob to pull it back to where I want it, but it won't stay. It just randomly fluctuates until the stereo is power cycled. It is one of two really bad issues I have since the r3 'upgrade'.

Oh well, par for the course for the F series, I guess.