Charging line to F150 toed

I have just discovered that the 12volt charging line to my 2019 Ford F150 battery is not working. Turn signals, stop lights and portable brake system all work fine but I am not getting 12volts to the battery, the problem is between the connector and the battery.

So my question, is the charging line to this vehicle necessary? If the battery charge on this vehicle gets to low will it cause a problem with the 4 down towing feature?

Thanks in advance.
Colm