What Causes the Foul Smell in the Phideon's Air Conditioning?

[Annie]

The foul smell emitted by the Phideon's air conditioning is caused by a dirty air filter. The air filter is designed to trap impurities from the air. If it is not cleaned for a long time, bacteria and fungi can grow, leading to unpleasant odors that are blown into the car through the vents. If the air filter needs to be replaced, here are the steps to replace it: 1. Use a tool to loosen the locking nut on the air filter box. 2. Lift the cover of the air filter box to reveal the old air filter. 3. Remove the filter and check its condition—whether it is too dirty or structurally damaged—to determine if replacement is necessary. 4. If replacement is not needed, clean the filter with an air gun and continue using it. If the filter is damaged or too dirty, install a new one, referring to the position of the old filter during installation.