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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Hybrid Control System - Diagnostic Codes (7 Of 7) & Circuit Tests (1 Of 2)) >> HYBRID CONTROL SYSTEM (for PHEV Model) >> Pattern Select Switch EV/HV Mode Circuit [08/2023 - ] >> Description

Pattern Select Switch EV/HV Mode Circuit [08/2023 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.
  1. EV mode 

    When a sufficient amount of electricity is remaining after charging, EV driving is performed using electricity stored in the HV battery.

    Depending on the situation, EV driving may be canceled and both gasoline engine and electric motor are used (HV mode).

    When in EV mode, the "EV MODE" indicator illuminates.

    When in HV mode, the "HV MODE" indicator illuminates.

  2. HV battery charge mode 

    Electricity generated in the gasoline engine can be stored in the HV battery by switching to the HV battery charge mode when electricity needed for EV driving is not remaining.

    When in the HV battery charge mode, the HV battery can be charged while driving. However, the gasoline engine runs to charge the battery and fuel consumption becomes higher compared with driving in HV mode.

    When in the HV battery charge mode, the "CHG MODE" indicator illuminates.