ijambert02
Posts: 1
Joined: Thu May 04, 2017 9:56 am
Delivery Date: 05 Jan 2017
Leaf Number: 307773

2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 3:05 pm

Hello All,

My first EV ever. 2017 Leaf S with Charge package. When coming to a stop the car jerks or skips. And its very consistent, and OF COURSE.. when the Nissan Leaf Tech was with me.. no jerking or skips whatsoever, I get the feeling its because i actually drove the car for a good 20-25 mins. Perhaps the motor is warm and no longer had the issue.

Anyone else had this issue?

LeftieBiker
Posts: 7206
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 3:10 pm

IF it happens when braking on rough pavement, that's normal - it's the ABS. If it happens on smooth, dry pavement it isn't.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

jjeff
Posts: 1468
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 3:55 pm

LeftieBiker wrote:IF it happens when braking on rough pavement, that's normal - it's the ABS. If it happens on smooth, dry pavement it isn't.

+1, ABS or regenerative breaking :) It happens on my Leafs as well as Prius. Both have ABS and both have regen, it doesn't happen with my '04 Scion Xb which only has ABS which has me thinking it might have more to do with the regen.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
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GE Durastation 30a

LeftieBiker
Posts: 7206
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 4:22 pm

jjeff wrote:
LeftieBiker wrote:IF it happens when braking on rough pavement, that's normal - it's the ABS. If it happens on smooth, dry pavement it isn't.

+1, ABS or regenerative breaking :) It happens on my Leafs as well as Prius. Both have ABS and both have regen, it doesn't happen with my '04 Scion Xb which only has ABS which has me thinking it might have more to do with the regen.


I think it's the way the ABS is programmed on cars with Regen - or at least the Leaf and Prius. The ABS is too "touchy."
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

twentysixteen
Posts: 8
Joined: Fri Mar 03, 2017 5:28 pm
Delivery Date: 17 Feb 2017
Location: Maryland, USA

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 4:41 pm

I get the same thing on my 2016. Any time I'm breaking while hitting rough pavement or potholes. Feels *way* different than a normal ABS, but I think that might be what it is...

Ekendahl
Posts: 24
Joined: Sun Apr 16, 2017 9:23 am
Delivery Date: 16 Apr 2017
Leaf Number: 316944
Location: Somerville, MA

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 5:01 pm

+1 on regen/ABS. Behaves just like my Prius. Smallest pothole would trigger the ABS for 1/10th of a second. This completely disables regen and it's all friction breaks. Transition is not smooth as they put emphasis on stopping the car.

I learned on the Prius to let go of break complexity for a fraction of a second and then apply it again. That's enough to allow regen again. Seem to work on Leaf as well.

Could be smarter but I think it's safety first thinking.
2015 Red Leaf SV,
Bought off-lease from GA in 2017. Still 12 Bars.
everyone knows that the red leafs are faster

LeftieBiker
Posts: 7206
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 6:17 pm

Smallest pothole would trigger the ABS for 1/10th of a second. This completely disables regen and it's all friction breaks. Transition is not smooth as they put emphasis on stopping the car.


My experience - shared by others - is that it feels as if the brakes have stopped working for a large fraction of a second when braking on rough roads. That may be illusory, but it's an unnerving illusion.
Last edited by LeftieBiker on Thu May 04, 2017 8:53 pm, edited 1 time in total.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

GerryAZ
Gold Member
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Location: Phoenix, AZ

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 8:16 pm

The Leafs have very sensitive ABS, but I have also had the issue on several different motorcycles and SUVs (both at work and home). Suspension tuning and ABS programming are the main causes, but brake pads and tire quality can also contribute. High quality aftermarket shock absorbers completely eliminated this issue on my present SUV. Regeneration certainly contributes on the Leaf, but my 2011 exhibited the sensitive ABS behavior even when the battery was down to 8 capacity bars and there was very little regeneration (prior to battery replacement).

The Leafs have ceramic brake pads which are clean and last a long time, but take quite a while to break in. I made an effort to shift to neutral when approaching stop lights for the first 1000 miles or so to get the brake pads seated on my 2015 Leaf and it really improved the brake feel. The shock absorbers and struts on the later Leafs are rather stiff when new so they don't keep the tires in firm contact with the road on rough surfaces. It gets a little better after the shocks and struts wear for a few thousand miles. Replacing the OEM Michelin tires with Continental sport performance tires also improved the braking on rough surfaces for me (at the expense of about 15% reduction in range).
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

LeftieBiker
Posts: 7206
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Thu May 04, 2017 8:54 pm

Good point about tires. Any LRR tire is likely to have marginal grip on rough pavement, making the ABS-induced skittering worse.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

jjeff
Posts: 1468
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: 2017 Leaf S, jerking, or skipping when coming to a stop only 62 miles

Fri May 05, 2017 5:51 am

LeftieBiker wrote:
Smallest pothole would trigger the ABS for 1/10th of a second. This completely disables regen and it's all friction breaks. Transition is not smooth as they put emphasis on stopping the car.


My experience - shared by others - is that it feels as if the brakes have stopped working for a large fraction of a second when braking on rough roads. That may be illusory, but it's an unnerving illusion.

+1 and even when I know it's coming I get a lump in my throat when I feel what I think is the breaks releasing when trying to stop.
I use a particular freeway exit several times/week and it always gets me. It's coming off a 70 mph freeway where I almost always have someone on my ass(most people like to do 75-80, I usually do 65-70) down a somewhat steep off ramp and towards the bottom of the hill is a stop light and right turn lane where all you need to do is slow down and merge with any traffic that might be on that cross road. Right before and into the turn lane there are several rough areas in the pavement that are impossible to avoid, to make matters worse they continue into the curve. My latest strategy and it seems to work pretty well is to break somewhat hard right before the bumps/curve and then let off the breaks as I go over the bumps and into the curve. Doing this I don't get the feeling of the breaks giving out and it's a overall better feeling :)
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

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