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Home >> Lexus >> 2023 >> NX 250 AWD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Electronic A/T Shift Lever System - Diagnostics - Introduction >> Electronic Shift Lever System >> Problem Symptoms Table [11/2021 - ] >> Problem Symptoms Table [11/2021 - ]
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Problem Symptoms Table [11/2021 - ]

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ELECTRONIC SHIFT LEVER SYSTEM

Symptom Suspected Area Link
Shift state does not change correctly or shift position indicator displays shift state other than actual Initialization and learning has not been performed after replacing the shift control actuator assembly (shift actuator ECU) Refer to UTILITY [11/2021 - ] 
The learned value is invalid after replacing the shift control actuator assembly (shift actuator ECU)
The shift state cannot be changed from park (P) to any other state The brake pedal was not depressed or was depressed lightly Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
The brake pedal was depressed after the shift operation was performed
The shift operation was performed at the same time the brake pedal was depressed
The shift operation was performed while engine cranking
Shift lever was moved to M
Shift lever was moved with the engine stopped
Shift lever was moved when accelerator pedal was depressed
Battery is discharged or voltage is low
When stopped on an incline, a shift operation was performed with the engine stopped
When "Braking Power Low Stop in a Safe Place See Owner's Manual" is displayed on the multi-information display, despite depressing the brake pedal and moving the shift lever, "Press Brake to Shift" is displayed Release the brake pedal and depress it again, and then operate the shift lever
Shift state cannot change to P P position switch was operated while driving Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
P position switch was operated while engine cranking
Battery is discharged or voltage is low Refer to ON-VEHICLE INSPECTION [11/2021 - ]
Inspect the ECU supply power Refer to ECU Power Source Circuit [11/2021 - ]
Fail-safe is temporarily being performed Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]
The shift state changed to P unintentionally P position switch was operated unintentionally Be careful not to touch the P position switch unintentionally
Ignition switch was turned off To change the shift state to other than P, turn the ignition switch to ON
Fail-safe is temporarily being performed Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]
Attempt to exit the vehicle with the shift state in other than P
(driver door open, driver seat belt buckle OFF, brake OFF)
Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
Does not change to shift state M Shift state is being changed to M from a state other than D Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
Battery is discharged or voltage is low Refer to ON-VEHICLE INSPECTION [11/2021 - ]
Does not change to shift state N The shift lever operation time was short Hold the shift lever in N for a certain amount of time
The shift lever was not held in N long enough while stopped or driving at low speeds Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
While performing a shift lever operation, the shift state changed to a state not intended After performing a shift operation, the shift lever was unintentionally pulled back to another position Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
The shift state changed to N unintentionally The shift lever returned to the home position too slowly Check for objects hanging from the shift lever, modifications to the shift knob, foreign matter, etc.
The shift lever was operated while driving or moved due to an object hanging from it Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
The shift state was changed to D while reversing
The P position switch was repeatedly pressed while driving
The P position switch was unintentionally pressed and held while driving
The shift state was changed to R while driving forward
Battery is discharged or voltage is low Refer to ON-VEHICLE INSPECTION [11/2021 - ]
The shift state cannot be changed to D or R The shift lever returned to the home position too slowly Check for objects hanging from the shift lever, modifications to the shift knob, foreign matter, etc.
The shift lever was not moved fully or operation time was too short Securely move the shift lever to each position.
Engine was not running Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
The shift state was changed to D while reversing
The shift state was changed to R while driving forward
Battery is discharged or voltage is low Refer to ON-VEHICLE INSPECTION [11/2021 - ]
The brake pedal was not depressed or was depressed lightly Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
When the vehicle was stopped in shift state N, the brake pedal was depressed after the shift operation was performed.
When the vehicle was stopped in shift state N, the shift operation was performed at the same time the brake pedal was depressed.
The shift lever was operated while the accelerator pedal was depressed
When "Braking Power Low Stop in a Safe Place See Owner's Manual" is displayed on the multi-information display, despite depressing the brake pedal and moving the shift lever, "Press Brake to Shift" is displayed Release the brake pedal and depress it again, and then operate the shift lever.
Supply power does not turn off
(while the ignition switch is ON)
When shift state is in N, the ignition switch was pushed within a certain amount of time of moving the shift lever to N Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
The shift position indicator does not illuminate or shift position indicator does not display the selected shift position Initialization and learning has not been performed after replacing the shift control actuator assembly (shift actuator ECU) Refer to UTILITY [11/2021 - ] 
Battery is discharged or voltage is low Refer to ON-VEHICLE INSPECTION [11/2021 - ]
Inspect the ECU supply power Refer to ECU Power Source Circuit [11/2021 - ]
Shift indicator malfunction Refer to REMOVAL [11/2021 - ]
Electronic shift lever system warning message is displayed on the combination meter assembly Check for vehicle control history (RoB) Refer to VEHICLE CONTROL HISTORY (RoB) [11/2021 - ]
Battery is discharged or voltage is low Refer to ON-VEHICLE INSPECTION [11/2021 - ]
Inspect the ECU supply power Refer to ECU Power Source Circuit [11/2021 - ]
Fail-safe is temporarily being performed Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]