AC Not Cold and Smells Bad – Toyota RAV4 2020
The air conditioning starts cold but then becomes warm, accompanied by a bad smell. This typically indicates a refrigerant leak, a failing compressor, or a clogged evaporator drain causing mold growth.
Diagnosis Details
Possible Causes
Low refrigerant charge due to a leak (common in RAV4 models around 4-5 years old).
Faulty AC compressor clutch or internal failure causing intermittent cooling.
Clogged evaporator drain or dirty cabin air filter causing musty smell and reduced airflow.
Expansion valve or orifice tube blockage restricting refrigerant flow.
Related OBD-II Codes
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What You Should Do
Check refrigerant pressure with a gauge set.
Inspect for visible leaks (dye test).
Replace cabin air filter if dirty.
Clean evaporator drain if clogged.
If compressor fails, replace and flush system.
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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.
