Lexus Troubleshooting Questions? Ask a Lexus Expert
Everything works on the radio except for sound? as in lights and setting
Any recent repairs or anything done to the vehicle before this happened?
Is this the original stereo for the car?
Does this have Mark Levinson system, easy way to tell is if speakers have Mark Levinson badge on it?
Have the two fuses Radio1 and Radio 2 been checked, these are located on drivers panel side by your feet.
And also 25 amp AMP fuse also in the same panel
AMP fuse would be the most likely cause.