Lost volume on radio now lost power all together

The radio has lost it's firmware data. This may be fixable or unfixable.

Reconnect speaker wires or replace speakers. Check the speaker connections.

could be the speaker out put has come loose at back of radio as to have all speakers blow at once is just to much of a coincedence so pop the radio out and check wiring connentors if all ok looks likely the radio is needing replacing

It sounds like a connection problem but their is a fuse for the radio and some times memory,possibly a ground,Hondas have many issues with loose grounds

sounds to me like the radio lost its pass word code.
(or a power amp fuse is blown)
check fuses. , this time. more carefully.
some radios go to now amp mode, will tune but are in pass word mode.
if you drain the battery , this happens everytime.
oldest story in the world this.....

http://www.jeepforum.com/forum/f96/obtaining-anti-theft-radio-code-1350588/

if all power pins on the radio have 12vdc and if radio has external amp
there are like 4 or 5 radio options on new jeeps.
so if it has an external amp,it too has power pins, if they have 12vdc
then the fuse is not blown. (the fsm shows the wiring and fuses, read the FSM)
if the radio is still dead, it can be the radio code issue.
if the fuses are good , its Jeep dealer time.

check fuse to radio
first.
or look for message (radio code)
if you lost the radio code (10000 post here on that topic)
then go to dealer and get t fixed.
or any pro lock smith , listed for car.

Try a capacitive discharge, remove both battery terminals and hold them together for thirty seconds, if that fails check your fuses on the back of the radio.

I’m happy to help further over the phone at https://www.6ya.com/expert/stephen_3312f315a96e2956

The volume control is digital, the circuit that controls volume has a problem, have it repaired, there is nothing you can do to fix it.

I own a 2002 lexus LS 430 with navigation system. The radio plays, but the volume and function on cd player does not work. The volume is real low and cant be turned up at all.

When I turn on my radio, the volume is on and o.k. but when I try to turn it higher or lower the volume is lost completely. Any comments?