derekjsmith said:
gfederas said:
DeaneG said:
After 14.5K miles I still get grabby brakes every day or two. Often it happens when I apply the brakes at low speed, let off again somewhat, and gently re-apply, like when moving around in a parking lot. Letting fully off the brakes briefly always cures the problem until the next time it happens.
I have had the same experience as DeaneG with the same solution.
Same here after 18k miles. But I can repo at higher speeds as well. Has nothing to do with regen this happens in D/Eco/N. But my driving style and background is different than most as a professional driver and high performance “racecar” driving instructor. My learned braking technique is you go quickly and firmly but not aggressively to brakes and release pressure or modulate as needed but never full release until stopped. In doing so the algorithms for the assisted collision avoidance system gets confused and thinks I really meant to do a panic stopped but did not activate the ABS so it will boost the applied ratio. And yes by fully releasing the brakes for a second or so it resets the algorithm and you are back to normal.
I had a similar experience recently, where I believe the ABS was activated for me, and releasing the brakes
didn't seem to help:
I was driving along and noticed that the car in front of me had come to a rather quick stop. I could have stopped fast myself and would've been fine, but I feared getting rear-ended. Instead, I decided to tap my brakes repeatedly a few times to flash my brake lights to make sure the guy behind me knows that I need to stop. I did NOT plan to stop immediately but rather in a very controlled stop over the distance that I still had in front of me.
I did this by tapping the brakes to flash the lights, intending to then apply whatever pressure I needed to stop. What happened instead is that after I tapped the brakes a few times, the LEAF seemed to get confused and applied the brakes hard, which then locked up the wheels and subsequently (appeared to) activate the ABS to stop the car rather than letting it skid on down the road. That was annoying but it shouldn't have been a big deal. I instantly removed my foot from the brake pedal, which in any other car would let go of the brakes so I could decide to pump them again, or not. However, the LEAF didn't kill the ABS. Instead it continued to bring the car to a very fast stop. That would have been great, if that's what I had wanted, but it wasn't. It sounds like what derekjsmith noted above:
...the algorithms for the assisted collision avoidance system gets confused and thinks I really meant to do a panic stopped but did not activate the ABS so it will boost the applied ratio...
Instead of simply warning the guy coming up fast behind me that I was slowing down (and then slowing down slowly), I basically stopped right in front of him, forcing him to do the same. He actually swerved to the right (which could've caused other problems since there were other cars approaching in the next lane) and fortunately was able to stop without hitting me, though when I realized what was happening I was sure he was going to rear-end my LEAF. It really freaked me out since I had removed my foot from the brake, but the car did
not release the brakes until after I had come to a complete stop (which nearly resulted in having a pickup truck in my rear seat).
The good news is nobody hit anybody, but a few of us got really frazzled... and I often wonder in a situation like this if there wasn't some sort of chain-reaction several cars back where someone might have hit someone else without our even realizing it...