Hi I have a 2011 IS350 i purchased off lease and i really enjoy the car , recently I have noticed i have engine noise coming through the speakers its really aggravating . I have the navigation system and everything Im just seeing if anyone else has had this problem or could give me some advice on how to fix the problem . Thanks for any advice

 

Do you get the noise while using all of the different settings? Radio, CD, AUX?

 

Its different at different times i know it sounds crazy but im maybe if bluetooth is connected its worse. thanks for your reply sorry it took so long to reply

 

Sounds suspiciously similar to a "ground loop" issue, which can be a nightmare to track down.....

 

Saying it is worse with Bluetooth, that is the exact opposite of what I was expecting. I had to install a ground loop isolater on my '06 model, since it only has a AUX cable port. It fully eliminated by engine noise coming through the stereo.

Your issue has me baffled if it gets WORSE using a wireless signal. Beyond my knowledge there.

I guess I'd start by making sure the grounds for the amp and the headunit are good and work from there.