LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2019 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (For Start) - Diagnostic Codes (1 Of 2) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> DTC B2790-46: ID-BOX Calibration / Parameter Memory Failure [10/2023 - ] >> Description

DTC B2790-46: ID-BOX Calibration / Parameter Memory Failure [10/2023 - ]: Description

When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority Note
B2790-46 ID-BOX Calibration / Parameter Memory Failure An internal malfunction occurs in the ID code box (immobiliser code ECU) (EEPROM access malfunction) (1 trip detection logic*).
  • ID code box (immobiliser code ECU)
  • Certification ECU (smart key ECU assembly)
 Smart Access A DTC output confirmation operation: 
  1. An immobiliser set/unset operation is performed (the ignition switch is turned off or to ON while the electrical key transmitter sub-assembly is being carried).
  1. *: Only output while a malfunction is present.
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected Fail-safe Operation when Malfunction Detected
  • Ignition switch ON: Engine cannot be started next time
  • Engine stopped: Engine cannot be started
 -
RELATED DATA LIST AND ACTIVE TEST

DTC No. Data List and Active Test
B2790-46 -
scientia non olet · About LEMON Manuals