DTC P177A-87: Lost Communication with Gear Shift Control Module Backup Power Supply Missing Message [11/2021 - ]: Wiring Diagram

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