Dtc C1380-7E: Stop Lamp Relay Actuator Stuck On [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.
When Any Of The Following Conditions Are Met, The No. 2 Skid Control ECU (Brake Actuator Assembly) Sets The Drive Output (Stpo) On Which Operates The Stop Light Control Relay (Semiconductor Power Integration ECU) And Turns On The Stop Lights.
Illumination Conditions:
- The Lexus Safety System Is Operating And Is Applying The Brakes.
- Secondary Collision Brake Is Operating.
- Brake Hold Is Operating.
- The Parking Brake Is Engaged While The Vehicle Is Being Driven.
- The Advanced Park System Is Operating And Is Applying The Brakes. (W/ Advanced Park)
| Dtc No. | Detection Item | Dtc Detection Condition | Trouble Area | Mil | Dtc Output From | Note |
|---|---|---|---|---|---|---|
| C1380-7E | Stop Lamp Relay Actuator Stuck On | When The Ig1 Terminal Voltage Exceeds 10 V And The +Bs Terminal Voltage Is 9.5 V Or Higher, Stop Light Drive Output (Stpo) Is Off, Stp Is Off And Stp2 Is On Continuously For 5 Seconds Or More. |
|
Does Not Come On | Brake/Epb | Output ECU: No. 2 Skid Control ECU (Brake Actuator Assembly) |