The rear air conditioner of the Buick Envision is not hot. It is probably because the antifreeze level is too low, causing the heater to not be hot. In addition, the valve on the warm air pipe is damaged; the engine warm air pipe is dirty and blocked; when the car is hot, the temperature of the two warm air pipes leading to the car is inconsistent. These three situations This will cause the air conditioner to be unable to blow out hot air. If the temperature of the heating air pipe is normal, it may be because the replica pull wire has fallen off or the switch is damaged. First check whether the antifreeze level is within the standard range. If the antifreeze level is too low, the heater will not heat up. Secondly, check whether the engine heating water pipe is dirty or blocked. If the car is hot, check whether the two heating water pipes leading to the car are at the same temperature. If the temperature difference is large, it means that the cooling water circulation is not good. Check whether the valve on the heating water pipe is damaged. When the temperature of the heating water pipe is normal, the fault is a heating copy switch failure. Check whether it is because the cable has fallen off or the switch is damaged.
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