DTC P0571-12: Brake Switch "A" Circuit Short to Battery [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.
The No. 2 skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied.
DTCs may be stored if either of the following occurs:
- Stop light switch assembly stuck on malfunction.
- The accelerator and brake pedals are depressed simultaneously.*
HINT:
*: The No. 2 skid control ECU (brake actuator assembly) may store this DTC upon judging that a stuck on malfunction has occurred when the accelerator pedal and brake pedal are depressed simultaneously. However, this does not indicate a malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Note |
|---|---|---|---|---|---|---|
| P0571-12 | Brake Switch "A" Circuit Short to Battery | When the stop light switch assembly is stuck on, the vehicle decelerates from 30 km/h (19 mph) or more to 3 km/h (2 mph) or less 10 times or more. |
|
Does not come on | Brake/EPB | Output ECU: No. 2 skid control ECU (brake actuator assembly) |