It just happened out of nowhere on my way home from work yesterday. 30 minute drive of this beeping was driving me crazy. I tried turning the car on and off a few times and it still does the same thing.

Has anyone else had this problem?

 

Yes..your amp is probably fried..if you search on here there are plenty of threads on this

 

more than likely it's the amp. i have seen that before

 

Thanks guys. I'll search more about the amp.
does anyone know how much it cost to replace with OEM and if its better to go aftermarket?

 

a factory one won't be cheap, here's a thread you might want to read

https://www.clublexus.com/forums/ls4...mp-repair.html

 

Several members have reported having their amps repaired by: http://www.unitedradio.com/

Seems like the cost was in the $350 range including return shipping.

 

I'm assuming your under warranty. If so, scroll into Lexus and this will be fixed under your factory warranty. You won't have you car for 2 to 3 days either if the amp is not in.

 

Now I had a similar problem recently ... No beeping, but the volume stopped working from the head unit all of a sudden, but minutes later it worked again. It still worked from the steering wheel though. It's done this twice this week.

 

are the amps covered by the Lexus extended warranty ?? As the 4LS ages these threads are becoming more and more common

 

yes iv had both amp and speakers covered under the extended no problems