sandeen
Posts: 115
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Leafspy & relay chatter under the hood?

Wed Jul 12, 2017 11:40 am

I have a 2012 SL, and LeafSpy pro. i'd noticed before that when the car was sitting and charging, I heard relay chatter under the hood, on the opposite side of the 12v battery. I chalked this up to battery management fiddling with cells, or something.

But today I realized that this only happens when LeafSpy is polling the car. If I exit LeafSpy, the chatter stops.
I'm a bit concerned that the LeafSpy polling could be shortening the life of some components in the car, specifically the relays which I assume to be making this noise. Has anyone else noticed this? Turbo3, any idea which parts of the polling may be causing this?

Thanks,
-Eric
Last edited by sandeen on Wed Jul 12, 2017 1:05 pm, edited 1 time in total.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

Reddy
Posts: 1436
Joined: Fri Feb 11, 2011 3:09 pm
Delivery Date: 18 Aug 2011
Leaf Number: 006828
Location: Pasco, WA

Re: Leafspy & relay chatter under the hood?

Wed Jul 12, 2017 12:01 pm

Yes, I've noticed this with my 2011 SL. I just unplug both the LeafSpy and charging. I'm not sure if they are related, but I agree: When there's extra noise I'd be worried.
Reddy
2011 SL; 9 bar, 46.44 AHr; 40,067 mi; rcv'd Aug 18, 2011
Long: http://www.mynissanleaf.com/viewtopic.p ... al#p226115"
Cold: http://www.mynissanleaf.com/viewtopic.p ... 60#p243033"

sandeen
Posts: 115
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Leafspy & relay chatter under the hood?

Wed Jul 12, 2017 12:42 pm

It'd be nice to be able to set the polling interval, there's really no need to cycle this as quickly as possible, I think.

For now I guess I'll stop leaving LeafSpy running in the garage while I charge .... :)
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

lkkms2
Gold Member
Posts: 299
Joined: Wed Jul 20, 2011 8:10 am
Delivery Date: 30 Dec 2016
Leaf Number: 302025
Location: San Diego/National City, CA

Re: Leafspy & relay chatter under the hood?

Thu Jul 13, 2017 2:02 am

Don't leave the OBDII Bluetooth connected. Pull out when not using.

Having an extension cable is a good idea. Leave the extension plugged in, but disconnect the OBDII.

I had this problem with my 2011 Leaf.
2011 Leaf SL purchased 6-22-2011, sold 1-18-2017 with new battery.
2017 Leaf SV with Premium Package purchased 12-30-2016

User avatar
Marktm
Gold Member
Posts: 353
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Leafspy & relay chatter under the hood?

Thu Jul 13, 2017 6:57 am

sandeen wrote:I have a 2012 SL, and LeafSpy pro. i'd noticed before that when the car was sitting and charging, I heard relay chatter under the hood, on the opposite side of the 12v battery. I chalked this up to battery management fiddling with cells, or something.

But today I realized that this only happens when LeafSpy is polling the car. If I exit LeafSpy, the chatter stops.
I'm a bit concerned that the LeafSpy polling could be shortening the life of some components in the car, specifically the relays which I assume to be making this noise. Has anyone else noticed this? Turbo3, any idea which parts of the polling may be causing this?

Thanks,
-Eric


I tried to replicate your issue with my 2012 Leaf. What I hear is a very slight "crackling" noise that appears to be coming from the junction box. It happens while charging whether or not I have the OBDII dongle in place - and of course having LeafSpy on/off makes no difference (always makes the noise when charging). I have the LELINK (low energy bluetooth/iOS) dongle. What operating system is your LeafSpy app?

I leave my dongle in place always and have not had any 12v battery drain issues when gone over a week - with the original battery.
2012 Leaf SL; 36,000 miles. Battery replaced November 1st, 2016.
Rural cabin with 6750 watts Grid tied PV. Off-grid solar Leaf charging capable (level II).

sandeen
Posts: 115
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Leafspy & relay chatter under the hood?

Thu Jul 13, 2017 7:58 am

I guess I can do a bit more investigation to be sure, but before I started this thread I started/stopped/started/stopped leafspy, and the noise came and went with it.
On the other hand, I went back out this morning and turned on leafspy and heard nothing... ?

yeah, the sound is sort of a tick-tick-tick type sound, not rhythmic but semi random.

I'm running leafspy on android with a bluetooth adapter.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

sandeen
Posts: 115
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Leafspy & relay chatter under the hood?

Thu Jul 13, 2017 8:14 am

lkkms2 wrote:Don't leave the OBDII Bluetooth connected. Pull out when not using.

Having an extension cable is a good idea. Leave the extension plugged in, but disconnect the OBDII.


Sure, that's a very big-hammer approach. :) But I was intentionally gathering data while charging, and became concerned that it might be hard on the car.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

GerryAZ
Gold Member
Posts: 1451
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Leafspy & relay chatter under the hood?

Mon Jul 17, 2017 1:26 pm

Make sure you are running a late version of LEAF Spy Pro. The earlier software versions did cause one of the relays to cycle, but I thought later software versions fixed this. I have no way to test with 2011 or 2012 now. There is no relay chatter with my 2015.
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

sandeen
Posts: 115
Joined: Fri May 12, 2017 1:45 pm
Leaf Number: 026685
Location: Minnesota

Re: Leafspy & relay chatter under the hood?

Mon Jul 17, 2017 1:33 pm

I get it at some times and not others - haven't narrowed it down. In fact one time when I opened the door to pop the hood and listen more closely, that stopped the chatter. (!)

I'm on 0.39.97 - latest, I think.

I guess the relays are probably replaceable, so maybe it's not a huge deal. Just seems odd.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

AntronX
Posts: 83
Joined: Sun May 22, 2016 12:17 pm
Delivery Date: 14 May 2016

Re: Leafspy & relay chatter under the hood?

Sun Jul 30, 2017 11:43 am

It's been explained in the past somewhere on here. The relay chatters to make sure the host computer has power during critical data read in case of loss of supply power. It is caused by Leaf's software, not Leafspy. My 2011 SL does it. I found that disabling Bluetooth on my phone instantly stops all chatter for good. No need to unplug the dongle. I now got into a habit of turning it off when I don't need to check the SOC during charging. The relay likely has millions of cycles before failure, so it should last.

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