CajunRosa

2004 LS 430. Everything works, including NAV System, but can get no sound from CD/AM/FM. Can see inserted CD "playing/advancing" and Radio will display stations, etc.; but no sound. No radio repair service in Corvallis, OR other than Lexus Dealership ~50 miles away. Would like to diagnose further before assuming an Amplifier issue and sending out for repair, or $pend by taking to dealer$hip. Great car, will if I must.
Suggestions? CajunRosa

jonathanz

iTrader: (2)

or replace the ML amps for approx. $250-$300 from ebay.

kevin3344

I took out the navigation unit in my SC430 and shipped it to a company in CA that fixes audio / navigation units. I saw something like that on eBay (comes with a 1 yr warranty). As mentioned you can find used units for a little cheaper.

BigBoomer

First thing I would do would be to check all the fuses as it may just be a blown/damaged fuse.
Also go into the Audio section and check what the balance/front-back settings are and the volume.
Yes, a blown amp is possible, but unlikely that both left and right and sub channels have all blown.
Finally, you can do a full reset by removing the -ve battery connector from the car battery for 30 secs, then reconnecting it.

malrafe3i

Dear guys
I have the same issue on my LS with mark levison .
I did replace the amp and still the same issue .
Its obvious that I reset the system as I disconnected the battery go replace the amp . Yet I have the same issue .
For the person saying about replacing the fuse. Does the fuse have an y relation to the sound as all other is working . I believe the fuse have relation with the full sound system . Kindly update guys

Thanks in advance

BigBoomer

There is a 30Amp fuse in the trunk fusebox that is only for the amplifiers (main and sub amps).
I would check that first if you have no audio at all.

VWTim

Welcome from another guy in Corvallis.

As others have said, check all fuses related to NAV and Audio first. Should be 2 or 3 up front and the main amp fuse in the back.

If that doesn't fix it, I'd unplug and replug all of the components that interface with the audio system as they're wired inline. Nav DVD player, tuner module, AMP, Lexus Link (if equipped) any phone modules, then disconnect the battery and see if anything works.

If not, do a google search for the service mode on the audio system. You can put it in self-test mode and it will tell if all modules are working correctly. This is a series of light/button pushes to go into service mode. It's very slow to update and change when you select menus, so give it some time and see what you find.

If none of that works, it's likely the AMP. I had United Radio refurb mine a few months back. They sell refurbishments on EBay as "Radios and More" https://www.ebay.com/usr/radiosandmo...72.m2749.l2754 Wait for an ebay %off coupon and you can save a decent amount of money of a refurb.