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Results are grouped by useful content—not by paid placement or guessed parts. Describe the symptom naturally; IAR recognizes common alternate wording while keeping exact codes and vehicle details precise.
Your available vehicle context is included where the destination supports it. AI guidance stays separate from verified IAR source records.
Transfers coolant heat to airflow. External blockage, internal restriction, leakage, and fan behavior matter.
General knowledgeSupports coolant circulation. Leaks, drive condition, flow, and engine design affect diagnosis.
General knowledgeRegulates coolant flow by temperature. Slow warm-up and overheating require different evidence.
General knowledgeTreat active hot coolant loss as a burn and overheating hazard, then inspect the cooled system to separate external leakage, cap/sealing concerns, trapped air, and possible internal loss.
intermediateTreat overheating as a stop-and-assess condition, then separate coolant loss, airflow, circulation, control, and combustion concerns.
professional recommendedUse controlled pressure on a cool system to investigate leaks without opening a hot, pressurized cooling circuit.
Test-first procedureCompare operating pattern, temperature data, and airflow evidence without applying a universal gauge, infrared, or fan rule.
Test-first procedureIAR does not passively record this search. Save feedback only if you want a local note that you can export later for editorial planning. VIN-like vehicle identifiers are redacted before local save.