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AV-SCANNER / Service function guides / Driver assistance and hybrid
This guide covers the complete service of the battery cooling fan and filter path on hybrid vehicles, from understanding the airflow design to cleaning the intake, fan, and ducting and verifying the repair with live data. It is written for working mechanics and experienced DIY owners who already understand high voltage safety boundaries and want a repeatable, professional procedure. After finishing, the reader will be able to diagnose a restricted cooling path, perform the cleaning without disturbing sensitive components, and confirm restored airflow and correct battery temperature behavior with a scan tool.
Guidance is general and covers many makes. Exact procedures and values vary by model, so confirm them in the factory service information for your vehicle.
Download all 12 sections as a branded PDF to use in the workshop.
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