Battery dropped to 0% then back to 50% minutes later, with a clunking sound.

[iansmith]

I've had the car three weeks so far.

 

I was standing outside my 2018 Fusion Hybrid leaning against the passenger door and I head and felt a noise that was similar to the door locks engaging but deeper and stronger.

 

When I got into the car and turned it on, the engine started up immediately and I saw the HV battery gauge at 0%. I let it sit for several minutes but it never budged. When I say 0% I mean there was no blue at all in the gauge. ODB said the HV battery was 275V. I know I had about a 50% charge when I last drove it yesterday.

 

So I drove it around for a few minutes and the regen symbol came on every time I braked but the battery gauge was still totally empty.

 

Then I heard and felt that noise again, it sounded like it came from the passenger side, and suddenly my battery meter was at 50%-60%, and ODB reported 295V. I've never seen the reported voltage that high before.

 

I drove home and shut it off, then came back an hour later and the battery gauge was suddenly 100% full.

 

Anyone know what just happened?

 

 

 

[murphy]

The high voltage battery is connected to the car by one or two contactors that have 12 volt DC coils. If a contactor sticks in the open position the car can't use the HVB.

The contactor is the noise that you heard.

[lolder]

It's not normal.

[billford]

The high voltage battery is connected to the car by one or two contactors that have 12 volt DC coils. If a contactor sticks in the open position the car can't use the HVB.

The contactor is the noise that you heard.

 

If it sticks open and the car cant use the hvb, then would that cause the engine not to start?

[murphy]

 

If it sticks open and the car cant use the hvb, then would that cause the engine not to start?

That is true.