2. Secondly, add the prepared cleaning agent to the water tank, then add tap water to the water tank that needs to be filled, then let the vehicle idle for 30 minutes and turn on the warm air of the air conditioner.
3. Before changing water, it is necessary to use high-pressure gas to make the pipeline unblocked. Need to add water three times and circulate many times. When the water from the pipeline is clear and bright, it means that the water tank has been cleaned. You can add antifreeze to the water tank at this time.