Expedition Weak Battery Sensor

I encountered similar symptoms with my 2018 BMW 5 series. The voltage sensor was defective, causing erratic battery behavior. Have you considered battery testing, specifically focusing on sensor output?

Thanks for the tip. When you say 'sensor output,' what specific values should I be looking for during the battery test?

In my case, the voltage readings from the sensor were inconsistent and often lower than expected. I would strongly recommend professional vehicle diagnostics to determine if the sensor is defective.

Thanks. I took it to a shop as you suggested and they confirmed it was indeed the battery sensor, repair cost was 315€. Appreciate the insight!