Musty Odor After Rain in 2020 Subaru Outback
A musty smell after rain typically indicates moisture intrusion, often from clogged sunroof drains, a leaking windshield seal, or a damp cabin air filter. This can lead to mold and mildew growth, affecting air quality and potentially causing respiratory issues.
Diagnosis Details
Possible Causes
Clogged sunroof drain tubes causing water to leak into the headliner or footwells.
Leaking windshield or rear window seal allowing water to enter the cabin.
Wet or contaminated cabin air filter from moisture or debris.
Blocked HVAC evaporator drain causing water to accumulate and produce musty odors.
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What You Should Do
Inspect and clear sunroof drains using compressed air or a flexible brush.
Check carpets and headliner for dampness.
Replace the cabin air filter if wet or dirty.
If odor persists, have a technician inspect windshield seals and HVAC drain.
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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.
