Musty Smell from AC in Tesla Model Y
A musty odor when the AC is on typically indicates mold or mildew growth in the evaporator case or cabin air filter due to moisture accumulation.
Diagnosis Details
Possible Causes
Moisture buildup in the evaporator case leading to mold/mildew growth
Clogged or dirty cabin air filter
Drain tube blockage causing water to pool in the HVAC system
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What You Should Do
Replace the cabin air filter and use an AC evaporator cleaner foam.
Run the fan on high with heat for 10-15 minutes to dry the system.
If odor persists, have a technician inspect and clean the evaporator case and check the drain tube.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
