Defect
Under certain conditions, the joint between the engine coolant temperature sensor housing and coolant pipe could fail. If this happens, coolant could leak while driving.
Safety Risk
A coolant leak could lead to a fire in the engine bay.
Remedy
McLaren will notify owners by mail and advise you to bring your vehicle to a dealership to replace the engine coolant temperature sensor housing and hose. McLaren recommends not to drive your vehicle on a racetrack until the recall repairs have been completed.