Firstly my steering controls including the horn work intermitently
secondly, the volume after a minute automatically reduces to say level 15.
Thirdly, I hear a buzzing sound from my rear speakers I dont know if these things are all related. Please help this ls seems to be jumping from one problem to another.

 

Well your issues sounds a little more complex than what I experienced. The other day while driving, I could not use the volume control on my steering wheel or the head unit. I kept driving and about 3 or 4 minutes later the volume decreased to almost nothing. I then had control of the volume again. The last button I pressed was the "mute / programable volume control" button on the steering wheel, and sure enough that is the level the volume dropped to.

I think my system was just "lagging" and took a second to catch up.

During this lag I did have control of the nav, phone button on steering column, just nothing to do with volume.

 

What you described in your response is exactly how my problem started say a few months ago I thought the system was acting up and may be a one off situation but now it has progressed to be a lot worse. The sound system seems to function at a low volume level. But it I kick it higher than say level 30 in a few minutes or seconds it automatically sets it very low. I wonder if the system is intelligent enough to know that there may be a problem some where in the circuit and then takes the action to prevent major damage. thats just what i m thinking.

 

lol...well now I wish I didn't post at all...lol

It happend once about two weeks ago and I have not had any other issues since then. I wasn't playing it extremly loud when it started acting funny. I just chalked it up to the fact that it's a computer, an on occasion they need to catch up with themselves. : )

If it is just the volume turning down that you are experiencing, it could likely be the amp over heating. They generally have circuts build in to them to prevent damage. Although I believe usually they just turn completely off, not down.

 

with regards to your systems starting off the way mine acted...

How often after the first occurence did you notice it continuing to happen?

 

it happens any time i raise my volume over 20 bars. I have it permenently at 15.

 

Has anyone been able to find solution to these issues?

If I use steering wheel controls the volume automatically reduces to level 15.
Main control works fine.