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Home >> Ford >> 2021 >> Explorer Limited Hybrid, 4WD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Cooling Systems >> Electric Powertrain Cooling - 3.3L DURATEC-V6 - Hybrid (BP) >> Diagnosis And Testing >> Electric Powertrain Cooling >> Symptom Chart

Symptom Chart

Symptom Possible Sources Action
SOBDMC/ TCM overheating Clogged SOBDMC/ TCM radiator or hoses INSPECT the SOBDMC/ TCM radiator and hoses for damage or plugging. INSTALL a new SOBDMC/ TCM radiator or hoses as necessary.
SOBDMC/ TCM overheating Radiator cooling fans Refer to Engine Controls - Symptom Charts (Hybrid) .
SOBDMC/ TCM overheating Active Grille Shutter Stuck Closed REFER to: Active Grille Shutter .
SOBDMC/ TCM coolant low Improperly connected SOBDMC/ TCM coolant hoses Disconnect coolant lines. Inspect mating services for any debris or defect. Reinstall lines, ensuring positive connection (i.e. push-click-pull). Refill expansion tank REFER to: Cooling System Filling and Bleeding . Pressure test the system. Perform a road test and inspect for leaks.
SOBDMC/ TCM coolant low Damaged SOBDMC/ TCM coolant expansion tank, radiator or hoses Disconnect the coolant lines. Inspect mating surfaces for any debris or defect. Inspect the SOBDMC/ TCM coolant expansion tank, radiator, and hoses for leaks. Reinstall lines, ensuring positive connection (i.e. push-click-pull). Refill expansion tank REFER to: Cooling System Filling and Bleeding . Pressure test the system. Perform a road test and inspect for leaks.
SOBDMC/ TCM coolant pump does not operate Damaged SOBDMC/ TCM pump wiring or SOBDMC/ TCM REFER to: High Voltage Battery, Mounting and Cables .