cwerdna
Gold Member
Posts: 6698
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Bad Module in Brand-New 2017 SV

Wed Jun 14, 2017 6:08 pm

Assaf wrote:Would you have to draw the battery down to ~5% for the LeafSpy test, or can you just do it at any charge level?

viewtopic.php?p=262965#p262965

It might be different for 30 kWh as it's been asserted the discharge curve is different on that battery vs. 24 kWh packs. I'd imagine a '16 or '17 service manual should specify.

'13 blue Leaf SV w/premium package (owned)
'13 blue Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

SageBrush
Posts: 738
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: Bad Module in Brand-New 2017 SV

Thu Jun 15, 2017 5:57 am

There is an old(er) thread in this forum describing in detail the story of one bad cell in a new LEAF. Your story sounds consistent. Unfortunately, I don't remember off the top of my head if the eventual resolution was replacement of all the pack. My guess is that a cell replacement is possible if balancing is performed afterwards but I doubt a Nissan dealership is up to the task. Moreover, an ad-hoc repair is not going to be authorized and I'll be amazed if Nissan has procedures in place.
2013 Model 'S' with QC & rear-view camera
Bought off-lease Jan 2017 from N. California with 63.9 Ahr after 22k miles
Car is now enjoying an easy life in Colorado

DaveinOlyWA
Gold Member
Posts: 11666
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: Bad Module in Brand-New 2017 SV

Thu Jun 15, 2017 7:21 am

cwerdna wrote:
Assaf wrote:Would you have to draw the battery down to ~5% for the LeafSpy test, or can you just do it at any charge level?

viewtopic.php?p=262965#p262965

It might be different for 30 kWh as it's been asserted the discharge curve is different on that battery vs. 24 kWh packs. I'd imagine a '16 or '17 service manual should specify.



This is strange to me because at that low an SOC, the voltage delta is always large. I have seen 200 mV+ differences FREQUENTLY in my pack which by all accounts has always performed well over 3 LEAFs. Keith posted a screenshot of his LEAF Spy at low SOC and the voltages are as expected, all over the place.

As far as driving it; the bad cell will degrade MUCH faster than the rest of the pack and eventually you will start to see shocking GOM readings that go from 65 miles to turtle in a few miles so tread lightly but guessing you have some time before it becomes critical.

Others have posted bad cells here as well but guessing their cells were bad a while before they noticed anything amiss.
2011 SL; 44,598 miles. 2013 S; 44,840 miles. 2016 S30; 13001 miles. 363 GIDs, Ahr 82.34, Hx; 102ish% kwh 28.1 QCs 112
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

Return to “Problems / Troubleshooting”