I been noticing a buzzing sound like a motor activating when i have the AUX option on my ML Navigation unit in use. Is this normal?

 

I believe there is a TSIB for this and they use a inline noise filter. Do a search and make sure your model year is applicable.

 

Asuming you dont have it connected to a power source correct?

 

I purchased one off of Amazon for like $10 shipped. Works like a charm! But if you have remaining warranty and have the time to burn waiting at the dealership, they should fix it for free.

 

Tons of threads on this:

https://www.clublexus.com/forums/is-...-released.html

https://www.clublexus.com/forums/is-...r-aux-tsb.html

 

Its not noise through the speakers, its sounds like its coming form the unit itself. It does it when i have the AUX button enabled with or without anything plugged into aux.

 

Does it do it in any other mode? Might be a speaker or sub going out if so...

 

It's called alternator whine. Here's a good article on it:

http://www.ilounge.com/index.php/bac...car-aux-ports/

I brought my car to the dealer and I wasn't in the TSB range so I and bought a Kensington noise reducing aux cable off ebay. No more whine!

 

UPDATE:

This sound that buzzes happens when i lower or raise the temperature, everytime i hit +/- on the temperature i hear the motor buzz. This is the same buzz i hear when AUX is enabled and nothing is plugged into it.