mgs333
Posts: 57
Joined: Wed Sep 11, 2013 11:33 pm
Delivery Date: 06 Sep 2014
Location: SF Bay Area

Re: Grabby Brakes?

Wed Nov 26, 2014 5:21 pm

I feel like this whole thread should be in the problems subforum but anyways, my 2015 suffers from this occasionally. Currently have about 1600 miles and have had this issue from the very beginning.
-Matthew
2015 S w/ QC
2002 BMW M3

darelldd
Posts: 248
Joined: Wed Apr 21, 2010 1:52 pm
Delivery Date: 28 Jan 2015
Location: Nor. Cal
Contact: Website

Re: Grabby Brakes?

Tue Nov 10, 2015 4:36 pm

I'm just gonna jump in here a year later. I've had my 2011 for half a year now, and the grabby brakes are driving my crazy.

This thread tuned me into one solution I've not heard of, nor tried. If you come totally off the brake pedal, it'll stop doing the grab for a bit? That's good to know! In the meantime, my local Nissan dealer tells me that my car does have a TSB for the brakes. And they want a full hour of labor ($150) to upload the software.

Can anybody convince me that this is a permanent fix, and worth the $150?
Darell, the EVnut >http://evnut.com<
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2011 while SL with Chademo... new to me in 2015.

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RegGuheert
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Leaf Number: 5926
Location: Northern VA

Re: Grabby Brakes?

Wed Nov 11, 2015 4:01 am

darelldd wrote:I'm just gonna jump in here a year later. I've had my 2011 for half a year now, and the grabby brakes are driving my crazy.

This thread tuned me into one solution I've not heard of, nor tried. If you come totally off the brake pedal, it'll stop doing the grab for a bit? That's good to know! In the meantime, my local Nissan dealer tells me that my car does have a TSB for the brakes. And they want a full hour of labor ($150) to upload the software.

Can anybody convince me that this is a permanent fix, and worth the $150?
Hi Darell,

I didn't realize this was a warranty service rather than a safety recall. IMO, it should have been the latter. Oh, well.

Regarding the update, I will say that the brakes have been MUCH more manageable since the firmware update. Originally the grabbiness occurred at speeds as high as 10 MPH or so, which practically launches passengers out of their seats. Now it occurs only below about 2 MPH. As such, it is more of a minor annoyance than anything at this point.

I will also say that I believe a lot of the grabbiness is related to rust accumulation on the disks due to hypermiling. This issue of rust has been significantly reduced by the P3227 update which greatly reduces regen, thus requiring more frequent use of the brakes. Who needs high efficiency when you have such a massive battery, right? :roll:

Good luck!

Reg
RegGuheert
2011 Leaf SL Demo vehicle
10K mi. on 041413; 20K mi. (55.7Ah) on 080714; 30K mi. (52.0Ah) on 123015; 40K mi. (49.8Ah) on 020817; 50K mi. (47.2Ah) on 120717; 60K mi. (43.66Ah) on 091918.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

TimLee
Posts: 2811
Joined: Thu Jan 20, 2011 9:40 am
Delivery Date: 17 May 2011
Leaf Number: 2026
Location: Chattanooga, TN

Re: Grabby Brakes?

Wed Nov 11, 2015 5:14 am

darelldd wrote:I'm just gonna jump in here a year later. I've had my 2011 for half a year now, and the grabby brakes are driving my crazy.

This thread tuned me into one solution I've not heard of, nor tried. If you come totally off the brake pedal, it'll stop doing the grab for a bit? That's good to know! In the meantime, my local Nissan dealer tells me that my car does have a TSB for the brakes. And they want a full hour of labor ($150) to upload the software.

Can anybody convince me that this is a permanent fix, and worth the $150?
Mine was done long ago at no cost under warranty.

Agree it made a difference.

But biggest improvement has been from learning to totally get off the brake pedal.

But it makes switching back and forth between the wierd LEAF and normal Altima ICE a tricky proposition :shock:

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

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lpickup
Posts: 1175
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Leaf Number: 16138
Location: Raleigh, NC
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Re: Grabby Brakes?

Thu Jan 21, 2016 11:13 am

Is this the latest info on grabby brakes on 2011/2012 MYs? Basically no news?

I tolerated the grabby brakes the first winter on my 2012 as it was fairly rare (maybe once every 2 weeks or so).

Second winter a bit worse, but still tolerable.

Third winter getting worse...

Fourth winter (car was 3 years old at this point) and I even had them do the brake fluid flush since I was hoping it would help (it didn't seem to).

Now we are in the fifth winter and it is close to what I would call unbearable, if not unsafe. It now does it ALL the time from speeds at around 15mph all the way down. In fact I wouldn't even call it "grabby" any more. It's more like the brakes are actually RELEASING. By that I mean I'll be coming up on stopped/slowed traffic and put even pressure on the brake, and it basically pulses on and off, as if I was completely releasing my foot from the brake.

I also have almost no regen bubbles when it's cold, even when the battery is down to well below 6 bars (I suspect this is related).

I really should take it to the dealer, but I'm just afraid I'll be wasting my money having them flush the brake fluid (didn't really help last year when I did it) and/or they'll tell me that it's just working as designed. I'll tell you what though, it's becoming what I would consider dangerous. Not so much because I don't think I'd be able to stop myself if I had to by pushing hard on the brakes, but just because the excessive grabby nature means that cars behind me may end up slamming on their brakes due to my jerky braking motion.
...Lance

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TimLee
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Re: Grabby Brakes?

Thu Jan 21, 2016 12:32 pm

lpickup wrote: Basically no news?
Correct. No news.

But what you report is a lot different than standard grabby brakes.

More like defective component.
Someone did report a component replacement a long while back.
Think the dealer found it leaking.

But they did report the replacement solved the grabby brakes too.

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

grandizer52
Posts: 130
Joined: Mon Oct 26, 2015 10:30 pm
Delivery Date: 27 Oct 2015
Leaf Number: 001089
Location: Pearl City, HI

Re: Grabby Brakes?

Thu Jan 21, 2016 12:43 pm

Wow, thought it was just my car and I see this thread...what did everyone else find out...

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lpickup
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Re: Grabby Brakes?

Thu Jan 21, 2016 1:16 pm

TimLee wrote: But what you report is a lot different than standard grabby brakes.

More like defective component.
While I won't rule that out, the fact that it's only during cold weather and has been progressively getting worse each year (as opposed to a sudden onset), it doesn't lead me to believe it's a simple defective component, but rather possibly a more accelerated onset than average? Anyway, I think I will take it in anyway. Nissan actually did try their hardest (although ultimately unsuccessfully) to resolve a strange noise my wife's LEAF had, so if I can potentially get corporate to listen (and not just the dealer), there is hope.
...Lance

Deep Blue Metallic 2018 Tesla Model 3 (31849) (delivered: 7/13/18)
Coulis Red 2016 SV (312310) (bought: 12/23/16 sold: 7/5/18)
Glacier Pearl 2012 SL (016138) (delivered: 12/9/11; traded in 12/23/16)
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lpickup
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Re: Grabby Brakes?

Wed Jan 27, 2016 9:37 am

So I was highly skeptical that it would have any impact at all, but I tried the "turn off the traction control and depress the brake pedal to the floor for 30 seconds" trick. By the way, that pedal goes WAY down...much further than I thought it would, and in fact there was a point where the feel of it changed about halfway down, like it was slightly less (or more, can't really remember) pressure required.

Anyway, it appears to have worked beautifully! I am completely amazed. Yes, I realize it may only be a temporary solution, but what the heck...it only cost me 60 seconds at a red light that I was stopped at anyway.

Which really makes me wonder why Nissan is so adamant that it's a "design feature" and working as designed and aren't willing to put in any effort to fix it, because it's probably a fairly simple fix.

Anyway, thought I would share my experience, as I had instant success with it.
...Lance

Deep Blue Metallic 2018 Tesla Model 3 (31849) (delivered: 7/13/18)
Coulis Red 2016 SV (312310) (bought: 12/23/16 sold: 7/5/18)
Glacier Pearl 2012 SL (016138) (delivered: 12/9/11; traded in 12/23/16)
NOGA$4ME Blog

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dgpcolorado
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Re: Grabby Brakes?

Fri Jan 29, 2016 10:38 am

lpickup wrote:So I was highly skeptical that it would have any impact at all, but I tried the "turn off the traction control and depress the brake pedal to the floor for 30 seconds" trick. By the way, that pedal goes WAY down...much further than I thought it would, and in fact there was a point where the feel of it changed about halfway down, like it was slightly less (or more, can't really remember) pressure required.

Anyway, it appears to have worked beautifully! I am completely amazed. Yes, I realize it may only be a temporary solution, but what the heck...it only cost me 60 seconds at a red light that I was stopped at anyway...
I've also used it successfully a number of times. But the last year or so my "grabby brake" problem has disappeared and not returned. I have no idea why: I've never had any brake related software updates done on my car. (Haven't even taken it to a dealer in well over a year since it has never needed any repairs and the silly battery check is worthless.)
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