！！情報求む！！ハイゼットカーゴの摩訶不思議なエアコンの故障、意味がわかりません

*Information on the vehicle to be serviced Vehicle: Daihatsu Hijet Cargo Model: EBD-S321V Year: Reiwa 2 Mileage: 176,500km *Details of the malfunction Mysterious air conditioner malfunction [SECRET Recommended Video] ■After five years of driving a new car, I thought the heater in my light truck had stopped working, and then a large amount of foreign matter came out... When I investigated the cause, I found it in an unexpected place    • 予防不可能！！暖房が効かなくなった原因を調べたらヒーターコアから大量の異物が！   ■[Reveal] Repair cost of 300,000 yen!! A car that doesn't pass the second vehicle inspection even though it's genuine!! Be careful as it may be an expensive repair    • 【暴露】修理代30万円！純正なのに車検に通らないアテンザ！！高額修理になる可能性があ...   ■A large amount of foreign matter in the oil pan of a car with over 100,000km on the clock!! We will remove foreign matter that cannot be removed by regular ATF oil changes before irregular shocks occur.    • 10万km過走行車のオイルパン内に大量異物！！定期的なATFオイル交換だけでは除去で...   ■The reason why it stopped running within one month of purchase on Yahoo! Auctions! The fate of a used car with over 100,000 km! The cruel inside of a clean diesel engine!    • ヤフオク購入１ヶ月で走らなくなった原因！10万キロ超えの中古車の末路！残酷すぎるクリ...   ■A light truck with 2 years and 20,000 km of new car stopped its engine while driving! It was supposed to be a dealer complaint case, but...    • 新車２年２万キロの軽トラが走行中エンジン停止！ディーラークレーム事案のはずが、、、デ...   ■A strange noise from the water pump at low mileage. It's now a chronic problem of KF engines. Water pump will be replaced at 30,000 km.    • 低走行でウォーターポンプから異音　もはやKFエンジンの持病　３万キロでウォーターポン...   Automobile maintenance videos and useful automotive videos will be uploaded every Saturday at 6:00 p.m. If there are sequel videos, they will be uploaded on weekdays as well, so please check the notifications. I think there are still areas where I need to improve in terms of filming and editing, but I will try my best to improve them little by little. Please subscribe to my channel. #mysterious #air conditioner #breakdown