Ford is re-recalling over 327,000 pickups to address an engine block heater issue that arose after an earlier recall fix.
The vehicles represent about 40% of the number recalled earlier to fix a problem with the block heater connections. Following the recall action, it was discovered that the engine block heater cable splice connectors used may have inadvertently been damaged during the servicing. This could lead to an inoperative block heater and tripping of circuit breakers on the plugs or the electrical panel, but it can also lead to overheating or melting of the wires, which could lead to an underhood fire.
Ford is aware of three fires that might be attributed to the issue, two of which (one in the US and one in Canada) happened after successful completion of the original recall and one in Canada where the vehicle failed the original recall inspection.
As per the original recall, the safety risk only exists when the pickup is parked and the engine block heater plugged in. However, if this is in a garage or other structure, there is a risk that a fire (if it occurs) could spread to the structure. So, until a fix is enacted on a vehicle, owners are advised to not use the block heater.
Affected customers will be notified to bring their pickups in to have the engine block heater cable replaced with a new one. Until then, affected pickups in for service will have the plug-end prongs cut off and the end-cap sealed with silicone.
This recall affects 2015-19 F-150 and 2017-19 Super Duty pickups. 196,269 of affected vehicles are registered in Canada, and 131,068 are in the US and federalized territories.