I had head unit issues on my2019 Limited, XM would not reconnect and fixing it required turning the unit/on off multiple times. The dealer scratched their head on this for a few months (and wasted service visits). Finally, they replaced under "goodwill". I hope you have a different outcome.

 

Sounds a bit like the amplifier issue I encountered, minus the static blast.

 

Did you try holding down the power button and forcing it to restart (not just turn off when the car powers down)?

 

Thank you for your answers. It was my AMP, just a blown fuse I think but I have to investigate a bit more.

Thanks,
James

 

Thank you for your answers. It was my AMP, just a blown fuse I think but I have to investigate a bit more. Thanks, James

This exact same thing is happening to me right now and it’s miserable driving in silence. How much did it cost to get yours fixed? Did you go to the Toyota dealership or a 2nd party?

 

Sorry I should have been more clear, this was my add on AMP for my subwoofer. It has a bad fuse and that made my whole system malfunction. I just unplugged my AMP until I can fix it.

 

Toyota Avalon IV (XX40) (2013-2018) fuse box diagrams & schemes - imgVEHICLE.com

 

I have the same exact problem with my 2019 Avalon XSE. Did someone respond to the message on how to fix the problem?

 

Replace the radio head unit itself. It took a lot of back and forth, and a change in dealerships. I paid for diagnostics, but eventually got it replaced…

 

The first and simplest thing to do to address any electrical issues is to disconnect any add on accessories.

 

This is true, but this is a little different.

1) It is a known fact the audio systems in the 5G Avalons are a problem. It doesn’t matter if you have the basic system in the XLE or the JBL

2) There is no aftermarket head unit. It is integrated somehow with the climate controls and will cost around $1500-2000with a core.

3) Some have had success with replacing the amp, but a lot of these do not have amps under the seats.

4) I went to 5 independent audio shops in Southern California and none of them would touch it - see #2.

5) I got mine fixed as a courtesy even though it was outside the warranty. Almost guaranteed if you are having problems now, its only going to get worse.

6) Unfortunately, unless you find a independent shop willing to look at it, AND is willing to source it, this is best left to the dealer. Be educated, informed, be ready to elevate.

 

2021 Avalon TRD and I'm having the same problem have you figured a solution for it yet ?

 

See my post above yours.

 

I have this happen occasionally when using playing music through CarPlay. I've tried a number of solutions but the one that works is to turn the car off and on. It reboots the computer(s) and think it's simply some embedded software weirdness.

 

hello, I have a 2021 Avalon TRD with the 14 speaker system and I had the problem were I was driving and had to turn off the car to reset the system. Under the drivers seat, there is the amp that powers the whole system I took off the plastic shroud and was to access the wire connectors. I disconnected them and reseated both the connectors. Ever since I did that I have not encountered the problem with the sound system shutting off. In my case i believe that a previous owner Had installed a subwoofer with amp amp who ever did the install did not seat the connectors all the way in. Move drivers seat all the way forward, and pop out the 4 or 5 plastic tabs, and you will have access to the amp.

 

Link? They must be fairly new.

eBay has them.

 

Hmm, not sure I would trust equipment from that source to shake hands with the OEM electronics. Might cause more problems than it solves.