Help: 2002 sc430 ML stereo no sound
05-03-12, 05:51 PM
#16
Moderator
This is an older link, but it may be a more cost effective solution it's the first and fourth post in the the thread. https://www.clublexus.com/forums/ls4...mp-repair.html Could be worth a call.
Last edited by VVTiBob; 05-03-12 at 05:56 PM.
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ThomasD94 (06-04-20)
05-16-12, 07:29 PM
#17
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Amplifier?!?!?
hey slowsc430, question for you, its funny that the same thing has happened to my car, i was driving down a bumpy road as well and the next day the stereo was not making sound.... was it the amplifer after all?!!?!?
05-21-12, 01:29 PM
#18
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Hi
In my case it was my amp
I did the checking method ser67 showed me in this thread and found NCON for my amp
I just received my amp from eBay today
I ll install it tomolo and hopefully I get my radio to work again
I ll keep u posted
Cheers
Ricky
In my case it was my amp
I did the checking method ser67 showed me in this thread and found NCON for my amp
I just received my amp from eBay today
I ll install it tomolo and hopefully I get my radio to work again
I ll keep u posted
Cheers
Ricky
02-05-19, 07:41 AM
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2005 Lexus SC430 - Stereo in Dead (I believe)
After having my car detailed and I was about to replace the bent antenna. I turned on the car and tried to turn on the stereo but it was totally dead - no lights etc. I followed the instructions to get into the service menu and it shows the AUDIO H/U = No Connection. Not sure if the unit failed - perhaps caused by the detailer, or perhaps just loose wiring harness (will try checking that when I can get some time). Any suggestions on an easier way to check if it's dead or just disconnected? Here's what I got from the service diagnostics.
02-05-19, 08:04 AM
#20
Lexus Test Driver
After having my car detailed and I was about to replace the bent antenna. I turned on the car and tried to turn on the stereo but it was totally dead - no lights etc. I followed the instructions to get into the service menu and it shows the AUDIO H/U = No Connection. Not sure if the unit failed - perhaps caused by the detailer, or perhaps just loose wiring harness (will try checking that when I can get some time). Any suggestions on an easier way to check if it's dead or just disconnected? Here's what I got from the service diagnostics.
02-05-19, 08:29 AM
#22
Lexus Test Driver
if the head unit has power...then I guess it could be a connection, which would odd.
02-05-19, 10:33 AM
#23
Lead Lap
Be sure to measure the fuses, not just inspect them. They can blow but still "appear" to be okay. Just use a voltmeter and make sure that 12 V is getting to both sides.
06-04-20, 12:04 PM
#24
The little fan is almost certainly on a thermostat or similar (temperature probe and electronics these days probably).
Amps get hotter when they are working more - so pumping out the sound will cause the fan to come on as the temperature increases.
No sound - No heat. So that could be one explanation why the fan isn't coming on.
You can get the head unit to do a self test to see what error codes are coming up so it will may you which part(s) may have failed.
If you look at one the pictures I attached you can clearly see the display, head unit, and Gateway (hub) are all fine but the AMP is not sending a reply - so is dead.
I've also attached the service menu 'hack' you need to do to get into it.
Would also be worth checking your ML Amp serial/model number to see if it was one of a dodgy batch Lexus installed.
Amps get hotter when they are working more - so pumping out the sound will cause the fan to come on as the temperature increases.
No sound - No heat. So that could be one explanation why the fan isn't coming on.
You can get the head unit to do a self test to see what error codes are coming up so it will may you which part(s) may have failed.
If you look at one the pictures I attached you can clearly see the display, head unit, and Gateway (hub) are all fine but the AMP is not sending a reply - so is dead.
I've also attached the service menu 'hack' you need to do to get into it.
Would also be worth checking your ML Amp serial/model number to see if it was one of a dodgy batch Lexus installed.
I am in a similar predicament and I have tried to activate the self diagnosis screen on my 2004 SC430, I have tried the steps by getting to the display screen and trying to tap the screen 3 times but nothing pops up? Any suggestions please?
Thanks, Thomas
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