I bought the car used on Nov 10 2017 with a nearly-full tank of gas (no idea how stale it was).
My commute to work is about 8-9 miles each way, and entirely on suburban streets with no freeways, at speeds between 35 and 50 mph, with a duration of 20-30 minutes. I haven't done any driving besides my commuting and errands since I bought the car, except for one brief trip to Windsor, Ontario and back (50 mile round trip). I try to do my errands only after sufficiently charging the HVB, because getting my groceries without burning a drop of gas is awesome!
It is currently winter and as we know an arctic blast hit Michigan during the New Years week. During the extreme cold, I was forced to run my defroster, and the battery also needed to get warmed up, so the engine would periodically come on, but I estimate it only ran for no more than 10% of each drive I took.
Last week, on January 5, my gas tank dropped to 1/2 so I filled it to full.
Yesterday (January 11), on the way home from my martial arts class (a 5 mile drive), my engine turned on despite the relatively warm outside temperature (above 50F/10C), and my left cluster screen said "Engine on due to low use". I was surprised since the engine had come on every single day during the last week, just not for very long. I figured that this was probably the equivalent of the "maintenance mode" on the Chevrolet Volt which forces the engine on every few months to avoid having the gas go stale.
However, during my morning and evening commute today (January 12), the engine stayed on 100% of the time. Pressing the EV button gave me the message "EV Now not available". When I went to the "power flow" screen, it said "Engine on due to normal operation". The car still drives perfectly fine - it is just bewildering that it refuses to go into EV mode despite having over 90% in the battery.
There are no warning lights on the dashboard. The weather got much colder today (below freezing - had to scrape a lot of ice off my car this evening!) but I doubt that is the cause, since I was still able to drive in EV mode during the arctic blast which was significantly colder than today.
Is this normal behavior for the car or should I get it looked at? Thanks.
Edited by 4cylinder, 12 January 2018 - 03:44 PM.