VEHICLE CONTROL HISTORY (RoB) [08/2023 - ]

WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.

DESCRIPTION (SFI SYSTEM)
- Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
- If the customer states that the engine stalled or will not start, it may be possible to diagnose the cause of the malfunction by checking the vehicle history information and freeze frame data.
- The number of possible stored Freeze Frame Data sets, whether multi Freeze Frame Data is available, the number of freeze frame points, Freeze Frame Data items, the ECU internal range, etc., is different depending on the stored group.
- The stored data items for Vehicle Control History Freeze Frame Data are different depending on the stored group. When the value of a data item does not change across all points, only the value of the detection point will be displayed. The contents of the Freeze Frame Data is almost the same as that of the Data List.
  Refer to DATA LIST / ACTIVE TEST [08/2023 - ]
PRECAUTIONS (SFI SYSTEM)
- As Vehicle Control History may be overwritten whenever the trigger conditions are met, make sure to save Vehicle Control History before performing any inspections.
- As Vehicle Control History may be stored when performing an Active Test, learning, etc., make sure to clear the Vehicle Control History before returning the vehicle to the customer.

CHECK VEHICLE CONTROL HISTORY (SFI SYSTEM)

Enter the following menus: Powertrain / Engine / Utility / Vehicle Control History (RoB).

Powertrain > Engine > Utility

Tester Display
Vehicle Control History (RoB)

HINT:

It is also possible to display Vehicle Control History during the Health Check, if "Store All Data" is selected.

VEHICLE CONTROL HISTORY ITEM

Code	Item	Trigger Description	Stored Group	Reference Inspection Procedure	Link
X260E*	Active Grille Air Shutter Specification Information Learning Incomplete	Switch Specification Information learning is incomplete.	-	Perform Switch Specification Information.	Refer to INITIALIZATION [10/2022 - ]
XF01B	ECU Security Key Not Registered	ECU security key not updated	-	-	Refer to UPDATE ECU SECURITY KEY [10/2022 - ]

*: w/ Grille Shutter System

HINT:

Multi Freeze Frame Data makes it possible to display the engine condition (ECU data) both before and after the trigger detection point.
The number of available points differs depending on the stored group.
When the value of a data item does not change across all points, only the value at the detection point will be displayed.
Only 1 measurement point can be displayed for stored group 0A Freeze Frame Data.

Vehicle Control History Freeze Frame Date

CLEAR VEHICLE CONTROL HISTORY (SFI SYSTEM)

Enter the following menus: Powertrain / Engine / Utility / Vehicle Control History (RoB) (Clear).

Powertrain > Engine > Utility

Tester Display
Vehicle Control History (RoB)

NOTE:

By performing this procedure, all stored Vehicle Control History items will be cleared.

VEHICLE CONTROL HISTORY (AIRBAG SYSTEM)
HINT:

A part of the control history can be confirmed using the vehicle control history.

Refer to VEHICLE CONTROL HISTORY (RoB) [10/2022 - ]
VEHICLE CONTROL HISTORY (HYBRID CONTROL SYSTEM)
HINT:

A part of the control history can be confirmed using the vehicle control history.

for THS-HEV Model: Refer to VEHICLE CONTROL HISTORY (RoB) [10/2022 - 10/2024] , or refer to VEHICLE CONTROL HISTORY (RoB) [10/2024 - ]

for PHEV Model: Refer to VEHICLE CONTROL HISTORY (RoB) [08/2023 - ]