Volume Switching from AM - FM - AM

Hi - a real real newbie here (75 miles on the ODO newbie!) and I'm enjoying the Prius so far. However, one niggling issue is that the volume needs raising significantly when switching from FM to AM and then I have to lower it before going back to FM or risk breaking the windows and my ear-drums! Popped into the dealer who said (wait for it) that all Toyota radios are like that including his own Prius and that it's because they're made in Japan!!! An engineer came out and tried to sort it but couldn't (I did get him to hook up his PC/diagnostic thingy to remove that annoying bleep bleep bleep bleep when you put it in reverse). Anyway, he said he'd ask Toyota HQ about the volume and get back to me. He hadn't experienced it before (all Toyota radios uh?). Anyone else have that problem? If so, any solutions???...... with greatly anticipated thanks.

 

Thanks but there wasn't a "level adjustment" in the sound function for the separate sources that I nor the engineer could find, just tone & DSP. Neither of those raised (or lowered) the volume when stationary. I will look and try again.

 

Thanks xs650 - I knew radios would differ in geographic regions but I'd hoped (forlornly I think) that the functionalities might be the same. Never had this issue with any of my other, non-Toyota cars. Ah well - just have to wait to hear back from Mr Engineer/Toyota HQ.