Entry Lock/Unlock Functions and Wireless Functions do not Operate After New/Additional Key ID Registration [11/2021 - ]: Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Lexus NX 350, 2025 Lexus NX 250, 2024 Lexus NX 350, 2024 Lexus NX 250, and 2023 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.

If all of the following conditions are met after an error message is displayed on the screen of the GTS during registration, or after performing new key ID registration or additional key ID registration, it is suspected that there is an ID code registration failure between the certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU), or there is a certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU) malfunction.

It is possible to start the engine
Wireless door lock/unlock operation is not possible
Entry lock/unlock operation is not possible

Also, if the engine does not start, refer to the following and perform troubleshooting as the suspected cause is a malfunction of the electrical key transmitter sub-assembly, entry and start system (for start function), etc.

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 03/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2023 - ]