![]() The second try in the video the guy listened to the lady and lifted his foot off the brakes two times to "pump the brakes" before applying full braking force and that was when they hit the wall.įound a link to a Chinese site that should be visible in China too:įrom the videos I watched related to it, others have not reproduced the same problem. The car was able to stop in the first try in the video (note they may have tried many times before, which they did not record). However the braking system still has to do some blending even in this case (to not interfere with each other).Ĭlick to expand.I also saw that video (the full one). The regen in Teslas instead is 100% controlled by the lifting off the accelerator pedal. Lifting off the accelerator pedal does not provide regen braking, only pressing the brake pedal. The way hybrids do it is by when you press the brakes, the system gives x-amount of regen along with it (to net to the expected braking force). Note that in general, Tesla does not blend regen brakes into the brake pedal in the traditional sense (as hybrids do). Both papers are based upon incorrect event data, incorrect reconstructions of event dynamics, and false assumptions regarding vehicle design factors." Belt’s third-hand reconstruction of log data from an unknown SUA event. The other theory was referenced by the consumer who submitted VOQ 11206155 and is based upon Dr. Belt’s review of EDR data from the crash reported in VOQ 11206155. A paper describing the most recent theory was submitted to NHTSA by the petitioner and is based upon Dr. Ronald Belt, the first in 2018 and the second in 2020. "As part of its evaluation of DP20-001, ODI reviewed two defect theories alleging vehicle-based causes of SUA in the subject vehicles. ![]() Even it is a rare case, when it happens, it is 100%.Ĭlick to expand.While the paper referenced has a lot of the useful information to reference, I would caution about fully believing the overall theory that it pushes. I really like the handling/accelaration of the M3, but my wife thinks I would give it up, for the safety concern. So my question to you guys/gals, is that have you ever encounter similar situation? having a hard to time to press the braking pedal and stopping the car on wet/slippery surface? Ironically, the technician from SC reproduced the accident at the same site, with his own M3. There is another accident in China, the owner also claimed having problem with stopping the car on the wet ground. If this is true, that would be a serious safety concern. And it also will extend the stopping distance. Without braking assistance, the pedal will be hard to press down, feel likes it is not working. Under some specific road condition (slippery ground, etc.), it will lower its braking assistance power, think regen braking is enough. Basically, Tesla writes its own code to synchronize the regen braking system with pedal braking system, putting regen braking's priority over pedal braking. There are some guys claim it is an software bug issue with the Bosch ibooster system on Tesla's car. After some research online, even in this forum, some owner had a similar incidence ( Total braking system failure!!!). One of the Chinese M3 owners (probably 2020 model) claimed to encounter brake system failure during driving, which caused an accident. Not sure if any of you is aware of recent drama in Shanghai's autoshow. Just placed an order for 21 M3 SR+ a few days ago.
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