My 2014 F Sport seems to have developed a very annoying issue. I have taken this road trip 3 times before without issue. This time I have an issue. Right off the bat, get up to about 75 mph and my wife and I go "What the heck, where is that annoying sound coming from?!" It sounded like a door wasn't sealed but I couldn't even begin to figure out where the whistle/whine/buzz was coming from. I had mentioned that it sounded like an old car I use to have that had a short in the rear speaker. This morning headed home I figured it out!!!!!! It's not a seal/wind noise issue. It happens at 2-3k rpms going 70mph+. When you accelerate hard it goes away. When you drop under 2k rpms it goes away. Keep in mind it doesn't do this at evey speed, only at 70+. Bam it hit me. It's coming from a speaker. It's the intake. Also my wife noticed when I was passing a car that my car at 5500k rpm+ sounds "staticy", (not clean and just masculine like before) it makes a weird sound but not mechanical, more like what the intake is producing into the speakers. 4 hour drive with that constant noise made me want to shoot myself.

 

But the intake noise is fed mechanically, through a tube at high rpm. There's no mic and no electronics associated with it. It's just a vibrating diaphragm. Were you listening to music through the aux port possibly?

 

Darn, that means I'm wrong. No I was listening to satellite radio, and I even tried turning it off but the noise was still there.

 

Hmm... odd. Is it audible enough to be recorded on your phone so you can upload it here?

 

Satellite radio sounds tinny - i couldn't stand it. Though it don't know if it's your issue.

 

I'll have to see, I'm not sure if it's loud enough or not. After my meeting I'll try.

 

I also listened to Bluetooth and FM, still had the noise. Also had the sound even if I turned all music off by pushing the volume ****. I do agree satellite radio sounds tinny, although tolerable. I can't stand it in fords with the Sony sound though, absolutely the worst I have ever heard.

 

The one thing I like about this car is the engine sound is mechanical not fed through the speakers like other new cars. I hate fake sounds.

 

So this morning my car was dead..?

 

What! Obviously something was draining the battery. Do you have any aftermarket electronics installed?

 

That just sucks! Sounds like you may have been hearing the alternator dying.

 

No, nothing. Not even a usb cord or or charger.

 

First the wonky tranny, now this? I think u have to go back to the dealer.

 

I know man but my dealer is 4 hours away so I was kinda putting it off.

 

4 hours away!!! My Lexus dealer (largest in the U.S.) is only a few miles away from me, which I'm thankful about.

I would have guessed it might have been an alternator making the [speed specific] static sound in the speaker(s) while driving, but a bad alternator would not have drained the battery down overnight with the car shut-down (Off).

Edit: I assume you are aware of the bad batch of batteries. Could a bad cell (shorting out one or more other cells) be a possibility?