Tharu Perera

Hi guys, so I've been having a noise issue with my Burmester speakers. It sounds like a static noise and usually happens when you first start the car or in cold weather (seems strange but that's what I've realised). They also seem to be happening from the rear speakers as far as I can tell. Does anyone know what the cause of this problem may be and if any solutions are available? Make sure you check out the links below so you can hear it for yourself. Thanks everyone!

https://vimeo.com/169864484

https://vimeo.com/169864482

ManiacGT

That noise is from a poor connection. This will likely be a dealer fix, could be amp, wiring etc

screw991le

I have the same issue on my H&K and the dealer could not find the problem. Mine is a combo of a low whine and static. Our cars have so much wiring and electronics, I am surprised they don't make more noise.

Mike5215

There is very little potential for a ground loop or electronic interference in the system. It's fiber optic from the HU all the way into the input side of the amp (for that reason). Static likely equals bad amp, but your sounds like a blown speaker.

Tharu Perera

I don't think it is a blown speaker as this only happens sometimes. Also it happens through all the speakers from the rear.

Mike5215

Did MB run a diagnostic on the amp?

Tharu Perera

No they haven't. They assumed it was just a software issue. I will take my car to the dealership soon and let them know about the amp, wiring etc. Thanks everyone for your help!

Mike5215

Hmm. Something is damaged on the hardware side. If it's intermittent, my guess is bad amp output stage but a STAR diagnostic should pick it up. Still in warranty?

Tharu Perera

Yeah it is still under warranty. The car is only a year old which is why this is so concerning. But I'll take it to the dealership soon and report back.

Mike5215

Warranty=No Worries. Interested to know how it works out.

Zand3rs

Seriously as soon as something is even remotly odd take the car to the dealer and demand them to fix it. Your under warranty, if you cant reproduce your problem in another car its something wrong and should be fixed. (should be anyway but yeah you get my point)

Imagine when you sell it down the road and someone hears that sound? Its an instant price dropper!

Mr. J

I'll bet a nickel it's the amp.

Tharu Perera

Not much luck at the dealer. They were unable to pick up the noise at the time. However I am 100% sure the problem still exists, mostly in cold weather though. I took my car to the snow a couple of days ago and the problem came back. Very strange.

Mike5215

Record it the next time it happens.

Tharu Perera

I have multiple recordings of it, but Mercedes tell me that unless they can hear it, they can't fix it. Very frustrating having to put up with issues like this in a current generation C Class.

Mike5215

Were you able to play it back to the service tech?

kleinebin

I had the same issue but mine was much less severe. Intermittent, would happen with music and calls.

They replaced the amp straight away.