Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Air Conditioning System(for Gasoline Model): Front Window Fogging
DESCRIPTION If the windshield frequently fogs up even though the air conditioning system is operating, the following factors may be the cause. Symptom Factor Windshield frequently fogs up Cooler compressor assembly malfunction Refrigerant volume (low) Cooler expansion valve (opened excessively) No. ...
