Random power shutdown

[sheabutterbee]

Hello!

I was parking my car as usual today and I pressed the power button and all my internal screens shut off. I tried pressing the power button and turning it back on because I thought this was weird and nothing happened. So I opened the door and my alarm went off. Once I turned it off by using the unlock button I was able to turn it on again as normal.

Any ideas why this happened? The smaller battery I'm the front has recently been replaced and retightened in the last couple years so I don't think it's that but maybe?

Thanks!

 

[EvanstonI3]

Classic signs of failing 12v battery aka: "the smaller battery in front".
Or do you have something plugged into the OBD port under the dash?

 

[sheabutterbee]

I don't have anything plugged in there. I will check out the battery