ABS Warning Light Remains ON [10/2018 - ]: Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.
The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication.
If any of the following is detected, the ABS warning light remains on:
- The skid control ECU (brake booster with master cylinder assembly) connector is disconnected from the brake booster with master cylinder assembly.
- There is a malfunction in the skid control ECU (brake booster with master cylinder assembly) internal circuit.
- There is an open in the wire harness between the combination meter assembly and the skid control ECU (brake booster with master cylinder assembly).
- The ABS control system is defective.
HINT:
In some cases, the Techstream cannot be used when the skid control ECU (brake booster with master cylinder assembly) is malfunctioning.