I received my delivery of a new Model S Plaid on Wednesday. On the 100-mile trip home, I noticed that I was getting distinct high-frequency tones coming out of the front motor that were clearly a series of increasing fixed-pitch harmonics of some lower fundamental. They were power-related rather than speed-related. As I paid attention and played with the accelerator and cruise control, I found that the peaks of the tones were spaced about 3-4 mph apart for steady-state power outputs, with the harmonic tones rising in pitch steps as the power output increased. The tiniest adjustment of the accelerator could dramatically affect the volume of the tone as it hit a resonance for that pitch, and they could be quite significant in volume when the peak was hit. They were generally in the 1700-1800 Hz range.
Has anyone else noticed such harmonic tones? I am planning to request that the front motor be replaced, as I don't believe that this is normal and it is very annoying.
Has anyone else noticed such harmonic tones? I am planning to request that the front motor be replaced, as I don't believe that this is normal and it is very annoying.