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What Causes the Odor in Tesla Model 3 Air Conditioning?

2 Answers

ZaneDella

09/01/25 6:44am

It may be caused by not replacing the air filter for a long time, or the air conditioning ducts being too dirty. Here are the detailed reasons and solutions: 1. Air filter not replaced for a long time: The air conditioning system is often overlooked during regular vehicle use. Prolonged use of the air conditioning can lead to bacterial growth. If the air filter is not replaced for an extended period, it can become moldy, produce odors, and its filtering efficiency will decrease. If there is an odor in the air conditioning, a thorough cleaning and disinfection of the system is necessary. Solution: Replace the air filter. 2. Air conditioning ducts being too dirty: Prolonged use of the air conditioning ducts can also lead to mold and odors. Solution: Clean the air conditioning ducts.

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Daphne

09/14/25 2:36am

I often encounter air conditioning odor issues in my Tesla Model 3. Research shows it's mainly caused by dirty filters or moldy evaporator coils. Moisture remains after turning off the AC in humid weather, breeding bacteria and producing that rotten egg smell, which affects driving comfort. The Model 3's compact AC system design places filters behind the glove box - if not changed regularly, they accumulate dust and mold particles more easily, making odors persistent. I recommend regular filter inspections with annual replacement, and running the AC at high fan speed for a few minutes before use to blow away contaminants. Persistent odors may also cause nasal congestion or allergies, but solutions are simple - either clean the evaporator or get professional disinfection at a 4S shop. Using external air circulation while driving can significantly reduce this problem.

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