lorenfb
Posts: 1407
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: 12V Battery Charging Mystery

Wed Oct 11, 2017 9:10 am

RegGuheert wrote:
Is there some period of time after opening (and leaving open) the driver's door on the LEAF that all the equipment in the car should go quiet?


Most vehicles fail to enter their 'sleep' mode, i.e. CAN bus' becomes inactive and ECUs power-down, with the driver's
door open, but haven't checked my Leaf for this. A simple test using an ammeter, i.e. the meter needs to be placed
in series with either battery lead WITHOUT disrupting the existing current draw, would verify this. This is done
by placing one lead on the battery post and the other on the lead while slowly removing the battery lead from
the post. If the measurement is not done without disrupting the 'sleep' current, the vehicle then begins a major
power-up sequence either damaging the meter (no fuse) or not measuring the 'sleep' current, when the meter
is attached. Obviously, the interior lights need to be off while the door is open.

barretoh
Posts: 7
Joined: Thu May 16, 2013 2:36 pm
Delivery Date: 16 May 2013
Leaf Number: 406885

Re: 12V Battery Charging Mystery

Thu Oct 12, 2017 11:20 am

I deleted my home as a charging point and the EV warning light is gone.

I'm not too happy that I spent $211 in Jan 2017 to upgrade the telematics if I'm not going to use it to get plug-in notification (which is all I really wanted -- forgetting to plug-in is a deal-breaker for me b/c I need I need all night to charge to go to work).

I'm trying to tell myself to just move on (you know, life is short, etc. etc.), but I suppose I'll email Nissan and tell them about this.

Thank you for replying to my post. I did not know that simply removing my home location would fix this.

B

DaveinOlyWA
Posts: 12336
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 6:07 am

RegGuheert wrote:
powersurge wrote:There are two things I would do for a parasitic electrical leak....

1) connect an ammeter to the battery terminal, or a multimeter that at can measure current through the wire.

2) find and unplug the fuse that connects your radio or "telematics". If you keep the ammeter on and systematically pull fuses, you will be able to find the cause...
The problem I see with this approach is that you need to have the door open to pull fuses in the LEAF. When the door is open, certain loads will properly come on. As such, you might improperly identify proper loads as parasitic loads.

Is there some period of time after opening (and leaving open) the driver's door on the LEAF that all the equipment in the car should go quiet?


In a 2016, I would say yes....at least partially. My back hatch light is on a timer so it does go off at some point. When, I couldn't tell you other than the time on is not sufficient to last all night. This has been tested 3 times in the last few months... :oops:
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 (build 10/2016)"low water marks" 27,000 miles.363GID Ahr 79.13Hx95.17%kwh28.1QCs238,L2's 251
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

lorenfb
Posts: 1407
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 9:14 am

DaveinOlyWA wrote:
RegGuheert wrote:
powersurge wrote:There are two things I would do for a parasitic electrical leak....

1) connect an ammeter to the battery terminal, or a multimeter that at can measure current through the wire.

2) find and unplug the fuse that connects your radio or "telematics". If you keep the ammeter on and systematically pull fuses, you will be able to find the cause...
The problem I see with this approach is that you need to have the door open to pull fuses in the LEAF. When the door is open, certain loads will properly come on. As such, you might improperly identify proper loads as parasitic loads.

Is there some period of time after opening (and leaving open) the driver's door on the LEAF that all the equipment in the car should go quiet?


In a 2016, I would say yes....at least partially. My back hatch light is on a timer so it does go off at some point. When, I couldn't tell you other than the time on is not sufficient to last all night. This has been tested 3 times in the last few months... :oops:


Without actually measuring the 12V battery's standby current/drain, e.g. a clamp-on ampmeter, you're guessing.
Please do an actual test and not guess!

DaveinOlyWA
Posts: 12336
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 10:13 am

lorenfb wrote:
DaveinOlyWA wrote:
RegGuheert wrote:The problem I see with this approach is that you need to have the door open to pull fuses in the LEAF. When the door is open, certain loads will properly come on. As such, you might improperly identify proper loads as parasitic loads.

Is there some period of time after opening (and leaving open) the driver's door on the LEAF that all the equipment in the car should go quiet?


In a 2016, I would say yes....at least partially. My back hatch light is on a timer so it does go off at some point. When, I couldn't tell you other than the time on is not sufficient to last all night. This has been tested 3 times in the last few months... :oops:


Without actually measuring the 12V battery's standby current/drain, e.g. a clamp-on ampmeter, you're guessing.
Please do an actual test and not guess!


no guessing here. the light was DEFINITELY off...
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 (build 10/2016)"low water marks" 27,000 miles.363GID Ahr 79.13Hx95.17%kwh28.1QCs238,L2's 251
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

lorenfb
Posts: 1407
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 12:46 pm

DaveinOlyWA wrote:
lorenfb wrote:
DaveinOlyWA wrote:
In a 2016, I would say yes....at least partially. My back hatch light is on a timer so it does go off at some point. When, I couldn't tell you other than the time on is not sufficient to last all night. This has been tested 3 times in the last few months... :oops:


Without actually measuring the 12V battery's standby current/drain, e.g. a clamp-on ampmeter, you're guessing.
Please do an actual test and not guess!


no guessing here. the light was DEFINITELY off...


So what! There're other ECUs, i.e. than the interior lights ECU, that may not have timed-out and entered
their sleep modes and the 12V current drain has entered its lowest value. Again, a bad assumption until
the actual 12V battery current is measured.

bbrowncods
Posts: 187
Joined: Fri Jun 06, 2014 8:53 pm
Delivery Date: 09 Jun 2014
Leaf Number: 339458
Location: Norfolk VA

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 3:25 pm

I have the same experiences as the OP. Heck I could have written the same post. This started after the 2g to 3g upgrade. It occurs when the car is plugged in or not. Doesn't matter.

Just got back from the dealer. There is a silent recall to "fix" this issue with a software patch. The patch has not fixed mine, and the service writer said Nissan knows there is a problem with the update but has no clue on what is actually wrong, or how to fix it. Pretty much sent me home and said bring it back when the EV light comes on again. Don't wait. That way they can read the active codes. Once the 12v battery dies the car resets and there is no way to identify the problem.
2014 Cayenne Red Leaf SL purchased 6/9/2014 (dealer received it on 6/7/2014), manufacture date 4/2014.
7/4/14 -629 miles, Temp 83, SOC 97.5, 59.81 Ahr, SOH 91%, Hx 91.44, 20.2 Kwh, Avg 4.127, High 4.136, Low 4.122, GIDS 267/92.5%.

LeftieBiker
Posts: 7399
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 4:00 pm

no guessing here. the light was DEFINITELY off...


Heh.
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.

lorenfb
Posts: 1407
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 8:36 pm

LeftieBiker wrote:
no guessing here. the light was DEFINITELY off...


Heh.


By the way, still waiting for the your documentation to corroborate that the Leaf's 12V battery charging algorithm
has been modified on post '13 Leafs. Please provide a viable link, no hyperbole, anecdotal info or guessing like in this thread recently. Most likely, you have battery data you have personally observed/measured, right?

LeftieBiker
Posts: 7399
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: 12V Battery Charging Mystery

Fri Oct 13, 2017 9:52 pm

I'm going by anecdotal reports that I read here, bitchy one. You don't get to dictate the terms of discussion or what is considered reasonable evidence. The available evidence strongly indicates a change in the algorithm after either 2013 or 2014, simply because there are comparably very few reports of charging problems from 2014 on. I also have nothing but anecdotal evidence and one auction report to support my contention that the 2013 Leaf was made using the old battery chemistry until April of 2013, at which point an improved chemistry was used. Would you like to go out and buy an early 2013 Leaf just to prove me wrong...?
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.

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