Check For Intermittent Problems [11/2021 - ]

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the GTS when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

Clear the DTCs.
Refer to DTC CHECK / CLEAR [11/2021 - 03/2023] , or refer to DTC CHECK / CLEAR [03/2023 - ]
Change the ECM from normal mode to check mode using the GTS.
Refer to CHECK MODE PROCEDURE [11/2021 - ]
Perform a simulation test.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]
Check and wiggle the harness(es), connector(s) and terminal(s).
Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2021 - ]