Posts: 5
Joined: Tue Sep 29, 2020 11:32 am
Delivery Date: 26 Sep 2020
Location: CT

Leave OBDII plugged in all the time for Leafspy?

Tue Oct 13, 2020 5:46 am

Does everyone just leave their OBDII reader plugged in at all times if they are running Leafspy? Or should I be removing it and re-inserting it just when i want to use Leafspy?

Thanks for any answers.

Posts: 15481
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Leave OBDII plugged in all the time for Leafspy?

Tue Oct 13, 2020 6:11 am

If you want to leave it plugged in, find a unit that turns off with the car, or at least goes into a very low current mode. Otherwise you risk draining the 12 volt battery.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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Posts: 1438
Joined: Thu Apr 24, 2014 6:08 pm
Delivery Date: 30 Apr 2014
Leaf Number: 424487
Location: Massachusetts

Re: Leave OBDII plugged in all the time for Leafspy?

Tue Oct 13, 2020 6:45 am

I left the bluetooth ODB-II dongle plugged into my 2013 SL for nearly 4 years without any issues with the 12V battery. I did not have an unit that turned off with the car or anything. I'll note that the SL comes with the little solar panel trickle charger for the 12V; although almost always my car was parked in a garage (at work and home). The only time I unplugged it was the two periods where the car sat unused for 2 weeks (I was out of the country), and I only unplugged it then because of concerns I got from this forum.

If you do decide to unplug the ODB-II dongle, do yourself a favor and get an ODB-II extension cord. Leave that plugged in and just unplug the dongle from that. This way you don't wear out the ODB-II port. I bought a Y extension, thinking that would let service or my state inspection plug into the free connection, but both always just unplugged the Y.
LEAF '13 SL+Prem (mfg 12/13, leased 4/14, bought 5/17, sold 11/18) 34K mi, AHr 58, SOH 87%
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100K 100% BEV miles since '14
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