Symptom Chart

WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM	POSSIBLE CAUSES	ACTION
Coolant loss	Hoses Hose connections Radiator Coolant pump Heater core Gaskets Engine casting cracks Engine block core plugs	GO to Pinpoint Test A .
Coolant loss still evident after carrying out pinpoint test A	Cylinder head core plug(s)	GO to Pinpoint Test D .
Engine overheating	Engine coolant (level/condition) Thermostat Fan motor Fan motor fuses and/or circuits Engine coolant temperature sensor Engine control module Fan speed module	GO to Pinpoint Test B .
Engine not reaching normal operating temperature	Thermostat Electric fan Fan speed module	GO to Pinpoint Test C .