cashewsdinner Posted October 4 Share Posted October 4 Greetings everyone, I am aware that this topic has been previously addressed, but I want current information on the nature of this issue and potential solutions. I own a 2022 Corolla SE hatchback with 16,000 kilometers on it. The vehicle seems and operates well; unfortunately, the odor emanating from the air conditioning system is quite frustrating. This is what I have accomplished: Replaced the cabin air filter. This is ineffective. Operated the heater at maximum heat setting. This method is effective temporarily, but the odor reemerges after a few days. 3. Applied foam cleanser inside the evaporator coil enclosure from the passenger side. This generated a significant amount of brown liquid in the catch pan underneath the vehicle. The problem was temporarily resolved, but the odor is reemerging. 4. Odor neutralizing aerosol 5. Lysol I have never had a vehicle that requires such maintenance, especially one with barely 16,000 miles. Ought I to bring it to the dealership? Is this a claim under warranty? Link to comment Share on other sites More sharing options...
mixturegro Posted October 4 Share Posted October 4 Do you maintain your air conditioning on recirculation mode continuously, or do you permit the intake of new air after the desired temperature is achieved? Do you reside in a humid region? My 10-year-old ES had unpleasant odors from the air conditioning, so I removed the filter and applied a whole can of Lyson to the evaporator, which resolved the problem. Link to comment Share on other sites More sharing options...
cashewsdinner Posted October 4 Author Share Posted October 4 Indeed, I reside in Houston. The vehicle originated from California. I attempted to use Lysol, after first removing the cabin air filter; however, this just resulted in the vehicle emitting an odor reminiscent to moldy Lysol. Link to comment Share on other sites More sharing options...
silver6933 Posted October 4 Share Posted October 4 I replicated igzy's actions, nevertheless the odor reemerges after some time. The one option I have identified is to reiterate this as necessary. I often use the air conditioning with the recirculation feature on. I reside in a non-humid region (Los Angeles, CA). It occurs mostly when the weather has been warm and I return to the vehicle after its parking. It is comprehensible, since all that condensation is being confined in a certain location. The odor is most pronounced when the air conditioning is off, the fans are operational, and the recirculation is disabled, allowing fresh air to enter. When the air conditioning is operational, the odor fades rapidly; nevertheless, it reemerges after the AC is deactivated and the outside vents are opened. I have also attempted to deactivate the air conditioning and open the vents when I am around 10 minutes from concluding my journey. This was ineffective, so I have discontinued it and will manage till I spray the evaporator. Link to comment Share on other sites More sharing options...
Mokwele Posted October 4 Share Posted October 4 Do you partially open the windows while parking? That assists in retaining heat. Utilize the sunroof as a ventilation mechanism for heat dissipation. Utilize a windshield cover to diminish the general temperature inside the vehicle. Window tint is also beneficial. Link to comment Share on other sites More sharing options...
DarsteMyst Posted October 4 Share Posted October 4 Running with fresh air will increase condensation on the evaporator. When in recirculation mode, the dehumidified air inside the cabin is continuously cycled through the evaporator. Due to the existing dehumidification, there is less moisture to extract, resulting in the evaporator remaining mostly dry. Fresh air will draw the humid external air through the evaporator, where it will collect moisture, rendering it saturated. To determine which option generates more water, do a 15-minute journey in the early morning, when humidity is highest, with the recirculation setting activated, and observe the volume of water discharged from the HVAC drain. Subsequently, repeat the ride in fresh air and observe the volume of water being discharged. Link to comment Share on other sites More sharing options...
cashewsdinner Posted October 4 Author Share Posted October 4 I see that if I slightly open the windows after parking, the odor does not persist in the vehicle. Upon activating the air conditioning, the first airflow is accompanied by a moldy odor, which subsequently dissipates. Link to comment Share on other sites More sharing options...
Mokwele Posted October 4 Share Posted October 4 There is likely humidity present in the heated air. I like to open the vent and windows when activating the air conditioning after a period of inactivity. Link to comment Share on other sites More sharing options...
cashewsdinner Posted October 4 Author Share Posted October 4 This is really beneficial; but, it reiterates the reality that I have never own a vehicle that necessitated opening the window to prevent an odor reminiscent of damp socks. I can see doing this with an old automobile, but this vehicle is almost spanking new. Link to comment Share on other sites More sharing options...
Mokwele Posted October 4 Share Posted October 4 Perhaps a sandwich is concealed under the carpet. Visit the dealer and use the warranty. Link to comment Share on other sites More sharing options...
kixriver Posted October 4 Share Posted October 4 Air conditioning is produced by condensation and darkness. Mold proliferates Always ensure the vent is closed while the air conditioning is operational. The next morning, the fan was set on high, and the air conditioning was off. It is necessary to dry it thoroughly after each usage. The cabin filter is irrelevant as long as it is replaced annually; I extend this interval to two years as I do not let debris to accumulate on my windshield cowl and then flow down. Arid arid arid I have never had a scent problem in my 40 years of driving. Link to comment Share on other sites More sharing options...
TurmericDare Posted October 4 Share Posted October 4 If the carpet is waterlogged, it presents a different problem; nonetheless, all odors, save those from spilled food, are attributable to water. Acquire WeatherTech floor mats as well. Link to comment Share on other sites More sharing options...
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