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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Hybrid Control System - Diagnostic Codes (5 Of 5)) >> HYBRID CONTROL SYSTEM (for PHEV Model) >> DTC P0AA0-73: Hybrid/EV Battery Positive and Negative Contactor Actuator Stuck Closed [12/2023 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

Refer to the precautions before inspecting high voltage circuit.

Refer to PRECAUTION [12/2023 - ]

NOTE:
  • If the DTCs are cleared or the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal before performing repairs, turning the ignition switch ON (READY) may cause a malfunction. Do not turn the ignition switch ON (READY).
  • Do not turn the ignition switch ON with the service plug grip removed, as this may cause a malfunction.
  • If DTC P0AA0-73 is output, do not install the service plug grip before completing repair.

    If the service plug grip is not removed, the HV battery will gradually discharge and the SOC will decrease.

HINT: 

If DTC P0AA0-73 is output, the ignition switch cannot be turned ON (READY).

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