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Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (For Start Function) (Diagnostic Codes & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> Power Source Mode does not Change to ON (READY) [10/2015 - ] >> Description
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Power Source Mode does not Change to ON (READY) [10/2015 - ]: Description

When the electrical key transmitter sub-assembly is in the cabin and the power switch is pressed, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. Additionally, when the shift lever is in P and the brake pedal is depressed, the hybrid control system can be started by pressing the power switch. If the steering is unlocked, the hybrid control system can also be started by pressing the power switch with the shift lever in P and the brake pedal depressed.

RELATED DATA LIST AND ACTIVE TEST ITEMS

Problem Symptom Data List and Active Test
Power source mode does not change to ON (READY) Power Source Control 
  • Stop Light Switch1
  • Steering Unlock Switch
  • Shift P Signal
  • IG Relay Monitor (Inside)
  • IG Relay Monitor (Outside)
  • Latch Circuit
  • Starter Request Signal
  • Power Supply Condition

Smart Access 
  • Immobiliser
  • Engine Start Request
  • S Code Check
  • L Code Check
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