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Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (Heating / Air Conditioning System - Diagnostic Codes, Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for Gasoline Model) >> ECO Switch Circuit [11/2021 - ] >> Description

ECO Switch Circuit [11/2021 - ]: Description

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The ECO drive mode control is activated for the air conditioning system by operating the drive mode select switch (combination switch assembly).

When the air conditioning system control cannot be performed while in ECO drive mode due to a malfunction etc., the following causes are possible.

Malfunction Status Factor
  • Even if ECO drive mode is selected, the air vent cannot be controlled
  • Even if ECO drive mode is not selected, the air vent cannot be controlled
  • Air conditioning amplifier assembly malfunction
  • Drive mode select switch (combination switch assembly) malfunction
  • Harness or connector