
The reasons for the odor in the Baojun 510 car air conditioning are as follows: 1. Accumulation of dust in the indoor filter and copper fins: After prolonged use, dust can accumulate in the indoor filter and copper fins, which, when reaching a certain level, produces an odor. When the air conditioning is turned on, this odor is dispersed into the air. 2. Moisture inside the indoor unit: After cooling or heating, the indoor unit often retains moisture. If the air conditioning is turned off immediately without a drying or anti-mold function, this moisture remains inside, leading to the growth of mold over time, which naturally produces a musty smell.

My Baojun 510 also experienced AC odor issues. After two years of use, that musty smell became particularly unbearable. The main reason is moisture and mold growth inside the AC system, especially in areas like the evaporator core and ventilation ducts. When using cold air in summer, residual condensation forms, and if left uncleaned for long periods, it breeds mold and bacteria. Another issue is not replacing the cabin air filter for too long - it gets clogged with dust and debris like a mask, blowing out these odors when the AC is turned on. There's also the possibility of leaves or small insects getting into the ducts, which rot and stink over time. I recommend turning off the AC five minutes before parking to let natural air dry the ducts, replacing the filter every six months (especially important in humid southern regions), and using AC system cleaner periodically for thorough cleaning to effectively prevent odor recurrence.

As a technician who frequently repairs cars, I've encountered many Baojun 510 owners complaining about air conditioning odor issues. Structurally, this model's AC evaporator is positioned quite low, making it prone to accumulating condensation which leads to mold growth. Additionally, the factory-installed cabin air filter is relatively thin with poor adsorption capacity, allowing dust to easily enter and accumulate in the ventilation ducts. Another often overlooked component is the blower fan blades - once contaminated, they continuously emit unpleasant odors. During repairs, the most common procedures include cleaning the evaporator, replacing the filter, and using professional deodorizers to sanitize the entire ventilation system. I recommend owners perform a thorough AC maintenance every 20,000 kilometers, rather than waiting until odors appear. Particularly after driving through flooded roads, immediate inspection of the AC drainage system is crucial.

In the third year of driving my Baojun 510, a musty odor suddenly appeared in the AC. Research showed the evaporator is often the culprit. Like a fridge, condensation forms there during cooling, and post-parking moisture accumulates on aluminum fins, breeding bacteria that cause odors. A clogged cabin filter worsens airflow and intensifies the smell. Additionally, spilled drink residues or dead insects in vents can decompose, creating worse stenches. Quick fixes: replace the filter immediately, order online AC cleaner to self-spray ventilation ducts, then blast max heat for 30 minutes under sunlight. Preventatively, turning off AC but keeping fans running for 5 minutes before parking effectively reduces moisture. Since adopting this habit, my car has remained odor-free.


