故障现象一辆雷克萨斯ES300h车,搭载的2ARFXE发动机和混合动力系统,累计行驶里程约为1万km。车主到店反映,最近使用驾驶人侧座椅通风功能时,感觉座垫和靠背通风效果不良,座椅表面明显发热,一开始以为是正常的,并没有特别在意,偶尔有次坐到副驾驶人侧座椅上,使用副驾驶人侧座椅通风功能时,发现副驾驶人侧座椅的座垫和靠背是冰冷的,不会出现发热的情况,这 Symptoms A Lexus ES300h car, equipped with 2ARFXE engine and hybrid system, the cumulative mileage of about 10,000 km. Reflect the owner to the store, the recent use of driver seat ventilation when the feeling of poor cushioning and backrest ventilation, the seat surface was significantly fever, initially thought to be normal, and did not particularly care about, and occasionally have to sit down to the co-pilot On the passenger side seat, using the passenger side seat ventilation function, it was found that the passenger side seat cushion and the backrest were cold and did not generate heat, which