Toyota Aqua AC Only Works When Climate Control is Set to Low

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Toyota Aqua AC Only Works When Climate Control is Set to Low

Hi everyone,

I’m facing an issue with my Toyota Aqua’s AC. It only seems to work when the climate control is set to the lowest temperature. As soon as I increase the temperature, the cooling stops completely, and it just blows normal air.

Has anyone experienced this issue before?

Could it be a sensor problem o r something wrong with the AC system?
What steps should I take to diagnose o r fix this issue?
Any help o r suggestions would be appreciated. Thanks!

Lubaba asked on 24 Jan 2025 17:07:52 pm

1 Answer

30 views |

Car Mechanic Expert - on 24 Jan 2025 17:08:46 pm

hi!
The issue with your Toyota Aquas AC only cooling at the lowest temperature setting could be due to a malfunctioning temperature sensor o r a problem with the climate control system. It’s possible that the system isnt properly regulating the temperature o r that a component, such as the blend door actuator, is not functioning correctly.

To diagnose the issue, start by checking the basics:

Inspect the AC refrigerant level: Low refrigerant can affect the systems performance.
Test the temperature sensor: If its giving incorrect readings, the system may not respond as expected.
Check the blend door actuator: This controls the mix of hot and cold air to achieve the desired temperature and may need repair o r replacement.

If you’re unable to identify the issue yourself, its best to take the car to a qualified technician who can perform a detailed diagnostic on the climate control system. Resolving this early can prevent further complications.