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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 92 (Heating / Air Conditioning System (HV) - Diagnostic Codes (3 Of 3), Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for HV Model) >> Recirculated/Fresh Air Modes do not Switch [11/2023 - ] >> Description

Recirculated/Fresh Air Modes do not Switch [11/2023 - ]: Description

WARNING: This page is about a different variant/trim than selected.

If the air inlet mode cannot be changed between recirculation/fresh or exhaust gas odors can be smelled even though recirculation mode is selected, the following factors may be the cause.

Symptom Factor
  • Air inlet mode cannot be changed between recirculation/fresh
  • Exhaust gas odors can be smelled when air inlet mode set to recirculation mode
  • No. 1 blower damper servo sub-assembly malfunction
  • Damper link disconnection
  • Air inlet damper mechanically locked
  • Engine coolant temperature (high)
  • Air conditioner unit assembly malfunction