Brake Warning Light Remains ON: Description

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

The skid control ECU is connected to the combination meter via CAN communication. If any of the following is detected, the BRAKE warning light remains on:

The skid control ECU connector is disconnected from the skid control ECU.
The brake fluid level is insufficient.
The parking brake is applied.
EBD operation is not possible.