I have noticed a noise that I believe is related to the motor. I have read about highway cabin noise, the high-pitched whine with acceleration and AC related noise, but the noise I am hearing is different. I searched the forums and found about six other users with reports of a similar noise at http://www.teslamotors.com/forum/forums/firmware-44. I addressed my concerns in that thread, but the thread was created to discuss software, so I decided to start a new thread to see if I can find some answers.
The noise typically occurs when driving faster than 30 or 40 MPH and definitely while I am on the highway at higher speeds (60 MPH). The noise becomes audible as soon as I push the accelerator and goes away as soon as I take my foot off the accelerator. It sounds like a low pitch humming noise or a buzzing noise and while it's hard to pinpoint, it sounds like it is coming from the back of the car.
I brought it in to my local service center and left it there for a day. They drove my car and other cars they had on hand. They noticed the sound in my car and not in the others. The best explanation they could offer me was that they thought it was normal, and perhaps it was part of the "break-in" of the car. They added that if it is actually an abnormal noise, the sound should get louder and louder over time. I'd rather not wait for a problem to get worse, which is why I have been searching the forums. One user in the aforementioned thread apparently had the same problem and had it "fixed" by a service center. But, the problem's explanation and the fix are still unclear.
I am not 100% sure, but I don't believe the sound was there when I first got the car in February of this year. I started noticing it a few weeks ago. Has anyone else noticed this? If so, is there an explanation and/or a fix?
Thanks in advance.