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Home >> Lexus >> 2021 >> ES 350 Luxury >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System (Except Hybrid) - Diagnostic Codes (1 Of 2) >> NAVIGATION SYSTEM (for Gasoline Model) >> DTC B1543: Extension Module Disconnected 2 [06/2018 - 09/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

    Refer to PRECAUTION [06/2018 - 08/2021] , or refer to PRECAUTION [08/2021 - 09/2022]

  • When replacing the radio receiver assembly or navigation ECU, always replace it with a new one. If a radio receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The radio receiver assembly or navigation ECU may not operate normally.
  • Inspect the fuse for circuits related to this system before performing the following procedure.
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