"Charge Now" unable to select

almost sounds more like an evse problem than a car problem. have you tried any L2 charging?

 

agreed. if that turns out to work every time, it sounds like a ecu issue.

 

The other way to charge immediately is to connect the cable, remove it, then connect it again. Have you tried that?

 

i mean software. they won't likely be able to fix it unless you can replicate, or there is a trouble code.

 

I have had that happen several times. Just leave it alone. Come back in 10 minutes or so and it will be charging.

 

Is it possible that it already is mostly charged.......and it takes some time for the computer to "realize" that it isn't really fully charged ??

 

@huskers is correct. I ran into something similar to what you are describing, just on random L2 chargers. After plugging, unplugging, messing with schedules, etc., I found out that all you need to do is wait about 5 minutes and the car will start charging on its own.

I have no idea why there is a delay sometimes. Happens to me about 1 in every 10 charges or so. Cold weather, hot weather it doesn't make a difference.

 

I think I noticed if I had a lot of short trips totaling 20+ miles or so it would happen.

 

In my case it's in the morning before 6am when I am pulling in to my chargers at work after about an 18 mile drive that starts on EV then switches to HV for about 12 high-speed miles (70+ MPH) then back to EV for the last 3 or so.

 

traveled 4.0 miles all EV ( fully charged battery) finished the 4.0 mile trip, plugged in (L1 EVSE) No green light illuminated waited 10-15 seconds still no green light.also could not lock J1772 plug. so I pulled plug out, re-inserted it green light came on and was able to lock the J1772 first time I noticed this phenomenon

 

sounds like a major prime bug.

 

exactly

 

Which buttons? The description is a mix of both screens, two very different options.

When you plug in, the smaller "speedo-cluster" screen will pop up, expecting a response from the steering-wheel. That's a simple slide indicator, where just pushing the center button will toggle it.

When you shut off the car, for about 20 seconds, the larger screen on the dashboard will offer a "Charge Now" button. That is grayed out to indicate immediate charging is already set because there is nothing scheduled.

Read these illustrated instructions for more information... John's Stuff - Toyota Prius Prime - Home Charging

That's exactly what you shouldn't do. Fast could cause a fault. You likely need to reset your CFCI outlet, service-panel breaker, or the charger itself.

What does the status light indicate ?

 

Ok, my .02... I have had the car for 9 months and I've put on 15K w a 50% ev ratio, so the battery has had her share of use. Until 2 months ago, I driving the car 100 miles a day and the battery ran fine. From the end of June until today (7/27), I've been using the car strictly for small trips around town and this issue happened! I believe a poster mentioned this and I believe this is the cause. I also think that you should plug it in and leave it for 5-10 minutes-- It seems like all these "short trips" are possibly messing up the battery. Or maybe the battery's "brain" just needs a minute to do its thing when you plug it in after its had a big load on its shoulders.

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This was also just after refilling the gas tank -- not sure if there could be a correlation.

1025 miles from last tank - whooohooo!!!

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