ac19
Posts: 21
Joined: Thu Apr 16, 2020 3:46 pm
Delivery Date: 16 Apr 2020

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Tue Aug 04, 2020 3:23 pm

OrientExpress wrote:
Tue Aug 04, 2020 7:38 am
Has your vehicle had the update done to it that corrects a SW bug that reports accelerated degradation on low-mileage 2016-2017 30kWh LEAFs? You will need to visit a Nissan workshop to have this verified.

From what you describe, your vehicle has all of the characteristics of a car that has not had the SW patch done.

Here are some articles for reference that describe the issue and the fix:

https://insideevs.com/nissan-issues-sof ... ng-issues/

http://cleanfleetreport.com/exclusive-n ... ttery-fix/

http://cleanfleetreport.com/exclusive-d ... ery-issue/
From 2017 i bet that this car doenst have any recall from nissan for BMC update. 😉

LeftieBiker
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Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Tue Aug 04, 2020 4:14 pm

From 2017 i bet that this car doenst have any recall from nissan for BMC update.

Why not?
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

ac19
Posts: 21
Joined: Thu Apr 16, 2020 3:46 pm
Delivery Date: 16 Apr 2020

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Tue Aug 04, 2020 8:53 pm

LeftieBiker wrote:
Tue Aug 04, 2020 4:14 pm
From 2017 i bet that this car doenst have any recall from nissan for BMC update.

Why not?
Because from my experience, in Europe, the 2017 30kwh Leafs come from manufacture with the last bmc firmware version, in many cases the 4NR6A.

LeftieBiker
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Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Tue Aug 04, 2020 10:31 pm

ac19 wrote:
Tue Aug 04, 2020 8:53 pm
LeftieBiker wrote:
Tue Aug 04, 2020 4:14 pm
From 2017 i bet that this car doenst have any recall from nissan for BMC update.

Why not?
Because from my experience, in Europe, the 2017 30kwh Leafs come from manufacture with the last bmc firmware version, in many cases the 4NR6A.

The Leaf in question is from Texas, US, NA. It was built in the US.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Ac123
Posts: 2
Joined: Mon Aug 31, 2020 3:32 pm
Delivery Date: 31 Aug 2020

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Mon Aug 31, 2020 4:27 pm

Hi, I Hope you can give me some advice as I am new to ev. We purchased a 2017 30kw leaf with a 6.6kw 4nr6a charger a few weeks ago. We get about 90 miles driving carefully at 4miles per kw which the dealer says is normal for a used leaf. It has 11 bars with a soh of 74% which I understand should be 9 bars? We have found out since it was at the dealer fully charged for over 10 weeks. Does anyone know if there is a charger bms update for this car or any suggestions?
Many thanks.

cwerdna
Posts: 11021
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Mon Aug 31, 2020 5:14 pm

Ac123 wrote:
Mon Aug 31, 2020 4:27 pm
Hi, I Hope you can give me some advice as I am new to ev. We purchased a 2017 30kw leaf with a 6.6kw 4nr6a charger a few weeks ago. We get about 90 miles driving carefully at 4miles per kw which the dealer says is normal for a used leaf. It has 11 bars with a soh of 74% which I understand should be 9 bars? We have found out since it was at the dealer fully charged for over 10 weeks. Does anyone know if there is a charger bms update for this car or any suggestions?
Many thanks.
Battery capacity and energy are measured in kWh, not "kw". "4miles per kw" should be 4 miles per kWh. As for "90 miles", what is that until? 1st warning (LBW)? 2nd warning (VLBW)? Turtle? Car totally dead and stops moving? Some unknown to me % SoC on the dash display?

Are you looking at the correct bars when you're talking about 11 bars? Where is "soh of 74%" coming from? It seems unlikely a car w/Leaf Spy SOH of 74% would have 11 capacity bars. That's too many.

See earlier posts in this thread about updates.

'19 Bolt Premier
'13 Leaf SV w/premium (owned)
'13 Leaf SV w/QC + LED & premium (lease over)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

LeftieBiker
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Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Mon Aug 31, 2020 6:40 pm

To put the question another way: have you or someone else used LeafSpy Pro to read the battery health? Or are you looking at the charge percentage on the dashboard, which is different from battery capacity? If you are getting 90 miles of actual range, with at least some highway driving, then you have a good battery.

Please read this, especially the section on the 2016-2017 Leaf. It may help.

https://www.mynissanleaf.com/viewtopic. ... 2&p=538030

And this. Some of it applies mainly to the older Leafs, but the 2017 is 90% the same as them, and most still applies: https://www.mynissanleaf.com/viewtopic ... 7&p=482154
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
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PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

cwerdna
Posts: 11021
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Mon Aug 31, 2020 6:42 pm

When people complain about "short" range or something along those lines, we usually need answers to questions like https://www.mynissanleaf.com/viewtopic. ... 21#p275421 so that we can establish a baseline. But again, need to know how you're determining "90 miles", where that SOH figures comes from and if you're actually telling us about the capacity bars.

https://www.mynissanleaf.com/viewtopic. ... 55#p436255 has a visual aid of the capacity bars, the thinnest ones all the way on the right, including the red ones.

'19 Bolt Premier
'13 Leaf SV w/premium (owned)
'13 Leaf SV w/QC + LED & premium (lease over)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Ac123
Posts: 2
Joined: Mon Aug 31, 2020 3:32 pm
Delivery Date: 31 Aug 2020

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Tue Sep 01, 2020 4:19 am

Hi
Thanks for your quick replies and the links to the help sections. We have been learning very rapidly.
When we purchased our Leaf we did not realize the health was the bars on the side, we have 2 red bars and 9 white bars 11 in total.
From February to August it did 105 miles and we can see in the sales photos it sat fully charged for at least 10 weeks until we purchased it in August, it has done 43K miles

Driving carefully at 30-50mph the energy economy meter on the dash shows at the end of 80miles an average of 4.1miles/kwh with 10 miles remaining battery life. I see other owners get around 130mile at the moment in the warmer UK 20 degrees celsius weather.

From my leafspy on 20 August I can see
AHr=60.97
Soh75.29%
hx=64.08%
354.74v -0.90A
10mv
11.68v
soc39.2%
the SOH yesterday shows 74.42%

I see some say about a BMS update if the number ends in A if it has a 3kw onboard charger but ours has a 6.6kw onboard charger. I think it is the 4nr6a number that is the important one?
4nr3c charger 2351116x831475
3ng2a ev/hev
4nr6a hv battery 230uk11716000325

I have borrowed another Leaf and drove it for 116miles with 12miles remaining.

When we said to the dealer about the range they said it is normal and gave the basic battery print out showing 11 bars, does anyone know if a Nissan dealers can see the SOH like leafspy?

I don't think this Nissan dealer is very familiar with Leafs or electric vehicles, they had 4 electric vans, I asked to test drive one, 3 were flat and the one I drove had 14miles remaining.

I hope you can advise me if I need a BMS update or the battery is failing or any other advice.
Thanks for your help

goldbrick
Posts: 918
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: 2016-2017 model year 30 kWh bar losers and capacity losses

Tue Sep 01, 2020 12:14 pm

I don't know much about Leafs in the UK but in the US, any Nissan dealer should be able to tell you if the BMS firmware update has been done based on the VIN. I don't think the BMS update will affect the range of the car but it could affect the SOC% reading as well as the SOH% reading. I don't know about that but my SOH% went up significantly after the update. 4.1 m/kWh is pretty low in my experience for that speed. How are the tires and air pressure in them? Any chance you have a dragging brake on one of the wheels?

On the bright side, if your battery is really at 75% SOH, it should drop another bar soon (I would think 75% would already be at 10 bars) and when the 4th bar drops, you should be entitled to a new replacement battery, assuming Nissan is still in business at that point.

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