The water tank is clogged, the heater control panel is damaged, and there is air in the water channel.
1. After the small warm air water tank is clogged, hot water cannot pass through the small water tank normally, resulting in the phenomenon that the warm air is not hot. It may also cause cold air to be blown out. The reason for this phenomenon is long-term Antifreeze is not replaced. In addition, if the air conditioning ducts are not cleaned for a long time, the small heater water tank may become clogged.
2. The heater control panel is damaged. When the heater switch is turned on, the heater switch fails and cannot transmit the corresponding heater supply signal, resulting in the phenomenon that the heater is not hot.
3. There is air in the water channel, which leads to insufficient hot air supply and abnormal heating air. The air in the water channel will not only make the warm air not hot, but in serious cases, it will also cause the engine to be overheated and cause other malfunctions. , requiring professional maintenance.
Toyota Vios generally refers to Vios. Vios is an entry-level family model specially designed and developed by Toyota for the Asian market. It is based on the NBC platform. After lengthening the wheelbase, the Vios developed on a small car platform has almost reached the level of a compact car.