BMW charging becomes unstable at higher AC current settings. It's important to note that AC chargers typically have a maximum output of 7.4 kW. Returning to the initial problem, a vehicle may exhibit erratic charging behavior at higher current settings, but improvements may be observed by reducing the charging amperage. The main recommendation is to adopt a cautious approach: before replacing any components, it's recommended to test lower current settings and compare the stability of the charging process. It may take a little longer to reach a full charge, but charging is more stable without generating instability. This method allows you to identify the safest and most stable configuration, minimizing the risk of hardware problems or malfunctions while charging the vehicle. This is why you should always carefully read the specifications of the charger you're connecting your car to, as well as the vehicle's specifications, so you're aware of the maximum values ​​allowed by the settings.