Symptom Chart

WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM	POSSIBLE CAUSES	ACTION
Coolant loss	Coolant leak Coolant hose damaged Coolant hose clamp loose/damaged Radiator leaking/damaged Coolant pump seal failed Heater core leaking/damaged Seal/gasket leaking Engine casting leaking Engine core plugs leaking	Check for coolant leaks. Perform a cooling system pressure test. Rectify as necessary
Overheating	Coolant level low Coolant contaminated Coolant leak Thermostat stuck closed Radiator airflow obstructed Cooling fan inoperative	Check the coolant level. Rectify as necessary Check the condition of the coolant. Rectify as necessary Check for coolant leaks. Perform a cooling system pressure test. Rectify as necessary Check the operation of the thermostat. Rectify as necessary Check the radiator for obstructions. Rectify as necessary Check the operation of the cooling fan. Rectify as necessary
Engine not reaching normal temperature	Thermostat stuck open	Check the operation of the thermostat. Rectify as necessary
Cooling fan operating at maximum speed - Engine not running	NOTE: Circuit reference - PWM - Cooling fan control module PWM signal circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagram and check the cooling fan control module PWM signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
Cooling fan is stationary - Engine running	NOTE: Circuit reference - IGN - Cooling fan control module ignition signal circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagram and check the cooling fan control module ignition signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary