At the beginning of December last year, I had the "Service Vehicle Soon" [Check Engine Light] go on in my 2015 Spark EV. I could not reset the light through the OBDII port so I took the car to the dealer. The dealer reported there was a problem with the DCFC charge port control module and had to order one. I was told the DCFC would not work until the module was replaced. The dealer also said the 120 / 240 volt charging port would work. Strange thing was, when I got the car back, I immediately drove to my local DCFC. Guess What! The DCFC worked fine and the "Service Vehicle Soon" light was out. 6 weeks later the replacement part arrived and I had it installed. So far, everything has been working fine. However, what I did notice is my average calculated battery capacity had dropped almost 1.5 kWh after I got the car back and it has remained at the lower level - 15.9 kWh - since then. I wonder if the "Service Vehicle Soon" light was really indicating a module in the HV battery was failing or had failed? I have not had any more "Service Vehicle Soon" light episodes since the DCFC charging module was replaced.
EDIT: Regardless, my lease for my 2015 Spark EV 2 LT is up at the end of May. The car will be returned early to my local Chevy Dealer on Tuesday as I will be out of state when the actual lease expiration date is reached. Whoever purchases this car will be getting a very nice vehicle that has had nothing but TLC. Even with the possibility of a dead HV battery module, the car still returns a full-charge GOM value of 90 miles. But, I am not sad to let it go - I still have a 2014 Spark EV 2LT and a 2016 Spark EV 2LT that are both mine to play with.
Last edited by MrDRMorgan
on Sun May 13, 2018 8:13 pm, edited 5 times in total.