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Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System (Diagnostic Codes) (2 Of 2) & Symptom Tests (1 Of 2) >> Navigation System >> DTC B15F7: Certification ECU Vehicle Information Reading/Writing Process Malfunction [10/2015 - 08/2019] >> Description

DTC B15F7: Certification ECU Vehicle Information Reading/Writing Process Malfunction [10/2015 - 08/2019]: Description

This DTC is stored when items controlled by the certification ECU (smart key ECU assembly) cannot be customized via the navigation system vehicle customization screen.

HINT: 

The certification ECU (smart key ECU assembly) controls the smart access system with push-button start related items that are customizable via the multi-display assembly*1 or accessory meter assembly*2 screen.

  1. *1: for 8 Inch Display

    *2: for 12.3 Inch Display

DTC No. Detection Item DTC Detection Condition Trouble Area
B15F7 Certification ECU Vehicle Information Reading/Writing Process Malfunction Certification ECU (smart key ECU assembly) vehicle setting processing malfunction
  • CAN communication system
  • Smart access system with push-button start
  • Certification ECU (smart key ECU assembly)
  • Radio receiver assembly