Today for the first time since I've owned my Volt I was presented with the Engine Maintenance Mode Event.
http://img.photobucket.com/albums/v82/AFVETTE/2012%20Volt/523f2064.jpg
It popped up this am as I was leaving for work, I dismissed it. This afternoon it popped up as I was leaving work, again I dismissed it as I wanted to do it at home in my drive-way.

So when I got home I pulled only partially into my garage and shut the Volt off. I then re-started it and again I was presented with the EMM message, this time I accepted it and immediately the battery was replaced with the fuel gage icon and the ICE started. I was going to get out of the vehicle, check mail and go into the house as the message indicated it could take "10 minutes" but I noticed a timer was now displaying in the DIC counting up from ZERO% to 100%, it was moving at a pretty good clip so I stayed in the car to monitor how long it took and what the car was doing. It took about 2 minutes and when it reached 100% the motor shut off and the car returned to battery power.

I did note that the center power usage LCD didn't register ANY fuel being used as I was led to believe, could it be because I wasn't driving when the EMM was in operation?

Just wanted to share this and inquire about the lack of fuel use being recorded for the EMM event.

It's pretty quick. One traffic light for me. No idea why it didn't register some gas being used.

Usually it'll show .03 or .07 gallons for an EMM I think. Remember that the smallest unit the Volt shows is .03 gallons - about half a cup, around 1.2 miles at 40 mpg. I guess it's possible that your conditions for EMM were ideal enough that it didn't use the first .03 gallons, and the Volt doesn't round that I've seen. The only one I've had occurred while leaving airport parking, and the progress bar actually moved backwards when I went from idling to driving forward - no idea why.

This is getting to be a regular event for the wife's.

I just went out to the car and started it again (second time after the EMM event) and I now see .03 gal used.

Thanks for the sanity check, will this impact my VoltStats ha ha - I need therapy.

Tom

You'll use less gas to stay parked like you were. If driving, pull over unless the extra cup of gas is no big deal...

MrEnergyCzar

Thanks for the sanity check, will this impact my VoltStats ha ha - I need therapy.Take two aspirin and a 200 mile road trip! One is a sure cure. ;)

That's so neat! Thanks for posting.

Welcome warmer temps, and EMM.

noooooooooo...

my maintenance mode, just ended my 2000+ miles no gas streak on voltstats... why????

will this impact my VoltStats ha ha - I need therapy.

noooooooooo...
my maintenance mode, just ended my 2000+ miles no gas streak on voltstats... why????
As long as you don't move while EMM is running, no miles will be counted against the gas usage, and it won't break the "no gas" counting on VoltStats. Good luck trying that with FMM (Fuel Maintenance Mode). ;)