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

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.

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 hybrid control system
Wireless door lock/unlock operation is not possible
Entry lock/unlock operation is not possible

Also, if the hybrid control system 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 - ]