2011RedLeaf
Posts: 44
Joined: Tue Jan 03, 2017 8:49 pm
Delivery Date: 10 Oct 2012
Leaf Number: 3999

Re: Sudden turtle at 55% SOC -2F

Thu Jan 04, 2018 7:28 pm

Perhaps it would be good to take a photo next time you get Turtle - a bit more proof that the problem exists if there is resistance from Nissan to making it right?

specialgreen
Posts: 141
Joined: Sun Mar 26, 2017 1:21 pm
Delivery Date: 26 Mar 2017
Location: Minnesota

Re: Sudden turtle at 55% SOC -2F

Thu Jan 04, 2018 7:54 pm

2011RedLeaf wrote:Perhaps it would be good to take a photo next time you get Turtle - a bit more proof that the problem exists if there is resistance from Nissan to making it right?


Oh, right, I did get that:
Image
Image

GerryAZ wrote:Did you check for trouble codes? The cell voltage graph looks normal.


I checked DTCs with LeafSpy; even though the dash was displaying the turtle, plus red and yellow "warning" triangles above, all the modules say "Ok None --> " for DTCs. I will throw my CRP128 ODB2 scanner in the car, and if it happens again, I'll also check for codes with that.

It sounds like it's "back to the dealer" for me. So-far, it's only been a curiosity; and covering my back-side in case there is further battery trouble. But if it turtled while driving on the freeway, that could be bad.
Last edited by specialgreen on Fri Jan 05, 2018 11:22 am, edited 2 times in total.

SageBrush
Posts: 2839
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: Sudden turtle at 55% SOC -2F

Thu Jan 04, 2018 11:36 pm

Does the normal pack go below 360 Volts at turtle level SoC ?
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
3/2018: 58 Ahr, 28k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

GerryAZ
Gold Member
Posts: 1845
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Sudden turtle at 55% SOC -2F

Fri Jan 05, 2018 9:28 pm

SageBrush wrote:Does the normal pack go below 360 Volts at turtle level SoC ?


Pack voltage at Turtle depends upon how well balanced it is and how much current is being drawn. My 2015 normally gets below 300 volts before Turtle limits power when using climate control to drain the battery in the driveway.

Specialgreen's dash photo is interesting because it shows that regeneration is being limited along with output power. Normally, full regeneration is available when the battery is discharged enough to get close to Turtle even with severe deterioration.
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

specialgreen
Posts: 141
Joined: Sun Mar 26, 2017 1:21 pm
Delivery Date: 26 Mar 2017
Location: Minnesota

Re: Sudden turtle at 55% SOC -2F

Wed Jan 17, 2018 2:55 pm

Update: the dealer had the Leaf for four days during a subzero cold spell, and couldn't re-create the problem. They reported that there were zero errors in the computer (does LeafSpy delete them automatically?).

They suggested that next time it happens, it would help if I could drive to the dealer without shutting the car off, so they can get it on the Consult.

User avatar
Nubo
Posts: 4907
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: Sudden turtle at 55% SOC -2F

Wed Jan 17, 2018 6:29 pm

They want you to drive to the dealership in Turtle Mode? :shock: :|
I noticed you're still working with polymers.

specialgreen
Posts: 141
Joined: Sun Mar 26, 2017 1:21 pm
Delivery Date: 26 Mar 2017
Location: Minnesota

Re: Sudden turtle at 55% SOC -2F

Thu Jan 18, 2018 11:01 am

Nubo wrote:They want you to drive to the dealership in Turtle Mode? :shock: :|


Yes, it sounds crazy.

On the other hand, My wife did drive it for 5 minutes after getting the turtle with no trouble; and both times it turtled, the car was fine again after turning it off and waiting. So they think it's a false alarm, and the car could drive all day (at 30mph). I also checked it with LeafSpy, and with the turtle showing, the battery cells had 34mV delta, which sounds not-perfect but OK.

The route to the dealer is roughly my normal daily commute, and I take surface streets when traffic is bad anyways.

jms
Posts: 59
Joined: Fri Sep 09, 2011 11:24 am
Delivery Date: 21 Feb 2012
Leaf Number: 17880
Location: Pittsburgh, PA

Re: Sudden turtle at 55% SOC -2F

Mon Jan 22, 2018 8:32 am

I had something very similar. Also crazy cold and the first thing I noticed is that the regen wasn't going past two bubbles. Then I noticed as I try to accelerate that it wouldn't go all the way up on the right side. Then it turtled at 79%. I managed on two separate occasions to turtle at 76% and 79% but it immediately went back to normal after a few moments.

I've also enjoyed this: a 20% drop in battery over the space of a half mile and then I get it all back a few minutes later. Freaked me out to go from 70% to 50% all of a sudden. I mean it was counting down by 3 or 4% at a time. but I got it back just as quickly. I've lost 2 bars so far and have over 95k on my 2013 but this is the first winter I've had this happen.
Now - 2013 Nissan Leaf SL - Silver

Gone - 2012 Nissan Leaf SL - Super Black

alozzy
Posts: 1162
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: Sudden turtle at 55% SOC -2F

Mon Jan 22, 2018 9:43 am

At what temp does the battery pack heater come on? I would think at -2°F, it would be on but it's probably at right around that temp.

It's too bad it's not possible to turn on the pack heater manually, bet that would take it out of turtle.

Wonder if @Turbo3 could change the set point via LeafSpy?

Otherwise, perhaps charging on CHADEMO for 10 minutes would warm up the pack enough to get it out of turtle mode.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

powersurge
Posts: 1090
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: Sudden turtle at 55% SOC -2F

Mon Jan 22, 2018 10:12 am

The dash picture does not make sense in the fact that the dash gives 91% charge, with only 63 miles range on the GOM.

On a new car with only 3K miles, it looks like the car is measuring a lot lower capacity than the % gauge indicates.

If the car then had only 50% charge, the car could be "seeing" a really low battery capacity and go into turtle mode?

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