Exactly the behavior I was seeing. Try the remedy that I tried (a few posts up). It has worked wonders. And actually even though I said "15mph and below", I need to revise that to 30 or even 40mph and below. I guess I hadn't realized it was so bad until after I applied the remedy and noticed that my old behavior was no longer necessary. For example, I was getting grabby brakes while decelerating on exit ramps from highway speed and had adjusted my braking behavior to compensate--basically avoiding a "light" touch on the brakes, where the grabbiness was worst. Now I am noticing that that is no longer necessary. As I decelerate on the exit ramp I am EXPECTING grabbiness, but it's simply not there. I am still amazed.drees wrote:One thing I've noticed with the cooler weather and aging battery pack where I frequently only have a couple regen bubbles available, is that the brakes now often get grabby at higher speeds.
Descending a slight hill at moderate speed, often it becomes difficult to modulate the brakes, similar to grabby brake syndrome at low speeds, though not as bad.
In my case both symptoms (grabby brakes and loss of regen bubbles) occur, or get worse, when cold. Although my loss of regen bubbles is noticeable even in moderate (50-60 degrees) temps. I really only get full bubbles any more when high 60's or higher and battery is less than half full. In colder temps (30's & 40's) I'm only getting 1 bubble until battery is down to 8 bars, 2 bubbles down to 4-5 bars and then 3 bubbles after that. I'm not a huge fan of regeneration normally, but when it traffic I am probably missing out on a lot of regen.Transtead wrote:I have a 2012 and have no such "chronic" grabby brakes as other posters have. Very rarely, I will experience an "episode" lasting about 10 seconds where touching the brake causes a severe braking action. But, I have learned I can reset it by taking my foot completely off the break and then braking again.
I live in California where the temp is between 50 and 90 most of the time, so could grabby brakes be a symptom of the system getting to cold??
Also, I have no loss of regen bubbles, and two missing bars of capacity (just lost the second one today)
Yep, that's precisely the behavior I get in winter since the P3227 update. I can only surmise that Nissan was seeing significant plating of elemental lithium onto the cathode during cold-temperature charging to warrant such a drastic reduction in regeneration.lpickup wrote:At the risk of going slightly off topic, my regen bubble report from this morning is thus:
Outdoor temp: 21F
Pack temp: 53F
I had ZERO regen bubbles until I was at 3 bars, and 9 miles on the GOM. At the point I finally got the first bubble, LEAFSpy reported SOC at 35%.