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This happened on the highway run approx 40 min at full speed
Toyota recommended replacement of ECU / change completed- no results/ same defect

Vehicle: 2012- Toyota Highlander Hybrid 6 cyl 3.5L

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Hybrid overheating

Any coolant leak check for? The is a Exhaust Gas Control Actuator , that are being inspected for leakage which has been causing overheating situation. This is something that was produced under a Recall from Toyota.

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