My vote is the 12 volt AGM battery. There have been a number of "strange behavior" postings on this forum which have been traced to the 12 volt battery. Try charging you battery with a good 12 volt AGM battery charger (BatteryMinder 2012-AGM) with the desulfating option and see if that helps. I make it a point each month to fully charge the 12 volt AGM battery in both my 2014 and 2016 Spark EVs. The BatteryMinder 2012-AGM has an option that allows you to charge through the OBD connector. It works great!Kaitsuni wrote:So, I took the car to the dealer. Apparently, disconnecting the battery flushes all error codes, if any, so they could not diagnose the problem. The dealer called GM engineers, but they haven't heard of this kind of problem either. My conclusion: we are driving a cheap car where the software aspect is definitely limping. Of course, GM will not fix even the known software issues, since Spark is discontinued, so why invest in support. IMHO, as long as GM will continue to disregard the software aspect, it will always be viewed inferior to Tesla, even if, for example, Bolt specs are very competitive to Tesla. C'mon GM, get you act together! Fix the software glitches, allow over the air updates, support additional apps, like TuneIn, which is NOT working!
If your 12 volt AGM battery is still the original, you may want to replace it or at least give it a full charge. You will need an AGM 12-volt battery charger with the de-sulfating function. I bought one and, during the first week of each month, I make it a point to fully charge the 12 volt AGM battery in both of my Spark EVs.
Might not be a bad idea. I'm retired, and on vacations, road trips, or during extended periods of snow or bad weather we take our backup ICE vehicle and the Spark may sit for a while. The backup ICE vehicle may also sit for a while because, well, it's a backup vehicle, and I have a Battery Tender Jr. for it. However, the Battery Tender Jr. doesn't have the de-sulfating option and I'm not sure that it's OK for AGM batteries.MrDRMorgan wrote: ↑Wed Apr 24, 2019 1:25 pmIf your 12 volt AGM battery is still the original, you may want to replace it or at least give it a full charge. You will need an AGM 12-volt battery charger with the de-sulfating function. I bought one and, during the first week of each month, I make it a point to fully charge the 12 volt AGM battery in both of my Spark EVs.
I did replace the 12-volt battery in my 2014 Spark EV a couple of years ago as a precaution after reading about the "weird" things some Spark EV drivers experienced. The12-volt battery in my 2016 Spark EV is still the original. These batteries are expensive - between $150 and $200!
Thanks. I didn't know about this one. I've added this to my Amazon wish list along with another 2 amp version that I added earlier.Kaitsuni wrote: ↑Thu Apr 25, 2019 10:53 pmHere is a charger I am using:
https://www.amazon.com/BatteryMINDer-Mo ... nde&sr=8-3