Loss of Power on Canyon Road!!!

Well I had quite the scare today! My 2016 Prius is currently at the dealer i want to share my story with this community first.
As I left work my indicator showed a full battery all bars in blue. As I was driving down the coast I noticed the battery started to quickly deplete, in approx 8.6 miles my indicator showed 1 blue bar. At that time I was making a left onto the canyon road. I thought this was odd. mind you it's my first hybrid. As I turned left noticed a decrease in acceleration power. Didn't think much of it but about until about 2 miles in I noticed the prius started losing acceleration power the motor was running and the indicator did not show that it was in ev mode even coasting through the canyon and braking it go very nerve racking since i had to accelerate to come up a slope through a tunnel i had almost no acceleration power. the car felt like it was hesitating (still one blue bar and motor was running) I think by the down hill coast and a few spurts of power surges i was able to make it through the tunnel by the 5th miles i had no power to accelerate luckily there was a road where i could make a right. as i coasted to the intersection I turned right then attempted to pull a uturn on a patch of dirt as i was 3/4 of the through the turn there was zero power the vehicle was on but no power engine cut out. no check engine light whatsoever i got suck in the middle of the 2 lane highway blocking both directions!!!!!! I thought this is not good!!! since cars usually come flying through this road. I put on my hazards and attempted to put the car in neutral it indicated it was in neutral, then i shifted to drive but again no power the car was just making a noise and like a very faint grinding noise. At this point cars were on both lanes trying to head each direction I had to get out and push the car backwards to get 1 tire off the side grade then I was still sideways in the middle of the road. I cycle the car 3 times by putting it in park with parking brake with no luck, or power. it wasn't until 4th try it got some power the engine kicked on and i was able to pull back in the right lane and i was stuck at the corner with my hazards on. The car again was on no check engine light? engine was running? but no power whatsoever to accelerate or reverse??? As a small fiat went around me the lady told me my reverse lights were on and that I should turn on my hazards but the car was in park with hazards on!!!! It was like the car went bonkers!!!

i sat in the same sport for 45 min waiting for towing to arrive but they were delayed another hour. I turning the car back on and when the light turned green i went for it i slowly pressed the accelerator and low and behold there was a little bit of power just enough to get me going. so i flipped the hazards on and drove 18 miles at about 45 miles per hour oddly the engine was on and it started to charge the battery up to 3 bars and stayed there.

I was able to get it to the dealer before closing time. They said they would diagnose it tomorrow! they didn't seem to care much about what happened one of the service advisor said rats might of chewed some wires!! which at that point i kindly asked him to stop! and to speak no more. I paid for a rental out of pocket and took my 2 kids car seats out of the back.

I will not drive this until it's absolutely fixed what a scary situation!! has this happened to any one else? And yes my tank was 3/4 full and a full charge when I first drove off from my work place. I'm really afraid to drive this vehicle again almost got hit 3x's while sitting sideways on a 2 lane winding canyon road!!

 

The dealership called me back today the service manager state there were no trouble codes reported. But he did mention the logs show when I had applied the brake and accelerator at the same time. ( when the car was rolling back into the road and had no power). He stated it matched with the events I described.

He can't explain what happened. 2 possibilities: when the battery does over heat the car will protect itself and cut power. (Like you mentioned Fotomoto)


Also if you press the brake and accelerator at the same time continuously it's puts it in limp mode.....

Service mangers words not mine.

The techs can't explain what happened? They are still diagnosing the vehicle keep you posted.

 

I had a booster seat behind the drivers site 1 infant rear facing seat behind the passenger side. One folded baby blanket on the floor passenger side. And 1 Star Wars sunshade behind drivers seat.

I wear size 13 shoe regular.

I guess it's always a possibility to touch gas and brake at the same time. What would explain indicator discharge from full bars to 1 bar in 8 miles on flat coast highway before canyon??

Anyone recommend any question to ask tech. I'm headed over now??

Thanks

 

Out of the 2: Middle vent Would seem likely to have been blocked by the blanket. I was in D.

So the tech told me that a possible explanation to having one bar is that the Prius " may go into a deep battery cycle (what does that mean?) well he stated it would discharge on the indicator then Attempt to recharge by kicking in the gas motor. He said if you were driving up an incline that might replicate the loss or perceived loss of power.

So does this mean that the engineers didn't think out the cycle and the ability for it to adapt to the ever changing driving condition. And if so would then it put those who are driving in strenuous condition be effectively SOL??

Thoughts??