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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Heating / Air Conditioning System - Diagnostic Codes (2 Of 2), Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for Gasoline Model) >> Recirculated/Fresh Air Modes Switch without User Input [10/2022 - ] >> Description

Recirculated/Fresh Air Modes Switch without User Input [10/2022 - ]: Description

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If recirculation/fresh mode changes unintentionally and without permission, the following causes are possible.

Symptom Factor
  • Recirculation/fresh mode changes without permission
  • Recirculation/fresh mode light blinks
  • Customize setting*1
  • Change in ambient air temperature
  • Decrease in refrigerant pressure
  • Air conditioning pressure sensor circuit malfunction
  • Engine coolant temperature (high)
  • Smog ventilation sensor*2

*1: except USA and Canada

*2: w/ Smog ventilation sensor

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