2. The fuse inside the heater system is deformed by heat, which causes the heater system to fail to work normally;
3. The sleeve of the heater motor has been running for a long time and has not been replaced, resulting in poor working conditions. When using the vehicle heater, the driver can use the following skills: first, don't turn on the heater system immediately after the vehicle starts, which will greatly increase the load of the vehicle, aggravate the wear of the engine, and lead to a significant increase in fuel consumption; Second, when using the heating system, the air conditioning system must not be turned on, which will greatly increase the workload of the vehicle.