Potential leakage of battery acid around the battery negative terminal could cause the battery monitoring sensor to fail. Over time growth of copper sulphate may accumulate. This, in turn, could provide a conductive layer underneath the Battery Monitoring Sensor, creating a low resistance to ground. The increased current flow, due to low resistance, could cause the surrounding material to heat up to a point where it ignites, resulting in a fire.
The Ford Galaxy models affected by this recall were manufactured between 13 February 2014 and 11 February 2019.
Ford recall code: 18P11
Source: Rapex Alert 33/2019 A12/1222/19