I've searched through the forum on this but didn't see this addressed. I have a TCH base model and on page 185 of the manual it states the following:

"Switching over the Speed Automatic Sound Levelizer (ASL) level
ASL: The Automatic Sound Levelizer can be turned on by turning the ****. In addition, turning the **** allows you to select from LOW, MID, and HIGH volume and tone settings."

What does the LOW, MID, and HIGH part mean? I don't see anything like that in the AUDIO CNTL options.

 

If you have the base JBL stereo, then you can only adjust ASL to ON or OFF. You cannot adjust the ASL volume as per the manual. In the thread below, at least one NAV user also states that his ASL is either ON/OFF with no volume control. I know that Scion head-units have the ability to adjust the ASL sensitivity, so not sure why our Camry head-units don't have the same feature.

https://www.greenhybrid.com/discuss/...&highlight=asl

 

Thanks. Looks like I have the base Japan made model with the non-functional ASL.

 

The ASL in my xB worked much better than the ASL in my TCH, but the sound system overall is better in the TCH. Much better sound staging and separation than in the Box.