Buick LaCrosse intermittent traction control and ABS light activation, possible short or fuse issue on Buick LaCrosse

Some Buick LaCrosse owners report experiencing intermittent activation of the traction control and ABS lights, which may be linked to faulty wheel speed sensors, ABS module defects, low brake fluid, blown fuses, or bad relays. When both lights remain illuminated, it often indicates a problem detected by the Electronic Brake Control Module (EBCM), frequently caused by a malfunctioning wheel speed sensor. Additionally, the simultaneous illumination of these lights can suggest issues with the wheel speed sensors that are essential for monitoring wheel rotation and supplying data to the ABS and traction control systems. Owners have found it advisable to check for potential issues such as faulty wheel or speed sensors or ABS module failure, which can be diagnosed using an OBDII scanner to read trouble codes stored in the ECU. Furthermore, if a bad ABS wheel speed sensor or problems with the ABS reluctor ring, steering angle sensor, wiring, fuse, or brake fluid are present, it could trigger both warning lights. Some owners also report experiencing false activation incidents involving the ABS modulator, leading to feedback in the brake pedal, power loss, or sudden vehicle pulling during braking. Lastly, issues with the wheel bearing assembly, particularly misalignment with the tone ring for the wheel speed sensor, can activate the ABS warning light, indicating potential problems with the sensor or related components.