Replies to post #81858 on Tesla Inc (TSLA)

[boston745]

All EVs experience this problem. But there are far more Teslas on the roads.

You originally posted this but I guess you forgot. The voltage spike observed is likely from Induced currents as spelled out below.

New information received by the NHTSA shows that sudden unintended acceleration events with Tesla EVs were real and not driver errors. The report explains in detail what caused the cars to accelerate even when the accelerator pedal was not pressed.

What's worse is that the incorrectly increased sensor signals will be sent via the CAN bus to the vehicle logs, causing Tesla and NHTSA to conclude that the driver caused the sudden increase in torque by stepping on the accelerator pedal. But in this case, the sudden acceleration was caused not by the driver stepping on the accelerator pedal but by a random superposition of a negative-going voltage spike (which is about 100 microseconds long), and the sampling time of the analog-to-digital converter (which is about 10 microseconds long). This random superposition explains the low occurrence rate of sudden acceleration in Tesla vehicles

https://www.autoevolution.com/news/breaking-nhtsa-petition-shows-tesla-s-sudden-unintended-acceleration-is-real-and-curable-217525.html

As posted previously this new petition will likely be dismissed as I don't think Teslas SUA problem is easily fixed as Dr. Belt suggests. Furthermore, Tesla is aware of its SUA problem, trying to fix it, and hasnt managed to yet.

What can cause the random negative voltage spikes is from induced currents from Electromagnetic Interference. As explained in the following quote, E3 wave (which is similar to conditions during a geostorm) causes voltage depression in power lines and it seems in Tesla system as well. Like regulators at a substation, Tesla system seems to try to make up for this voltage depression causing voltage spikes leading to SUA and logs recording high accelerator pressure even though the driver hasn't touched the accelerator.

E3 can also affect subtransmission and distribution systems by causing harmonic distortion and voltage depression. The voltage regulators at the substation will attempt to correct for low voltage levels on distribution circuits. This attempt can result in overvoltages when the E3 stimulus decays to a low value