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Home >> Lexus >> 2024 >> NX 250 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Smart Access System (For Start) - Symptom Tests (2 Of 2)) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function, HEV Model) >> Additional Key cannot be Registered [11/2021 - 03/2023] >> Description

Additional Key cannot be Registered [11/2021 - 03/2023]: 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 additional registration is not possible, a malfunction of the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly), power switch, No. 1 indoor electrical key antenna assembly (front floor), steering lock ECU (steering lock actuator with ECU assembly) or electrical key and tire pressure monitoring system receiver assembly is suspected.

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