What Causes the ABS Light to Stay On in a Cruze?

[Haley]

The reasons for the ABS warning light staying on in a Cruze include the ABS speed sensor's sensing part being covered; poor signal due to loose connections between system lines or poor contact of the ABS relay, leading to system failure. When the sensing part of the ABS speed sensor is covered by dirt, mud, or other contaminants, it affects the sensor's ability to detect the corresponding speed signal. This prevents the ABS computer from determining the vehicle's speed and the wheel's slip rate, thereby failing to issue appropriate commands to adjust braking. The solution is to clean the dirt off the speed sensor and adjust the gap between the speed sensor and the signal ring to restore normal function. Poor signal due to loose connections between system lines or poor contact of the ABS relay can cause system failure. The most common issue is a loose connection in the speed sensor wiring, which will also show as a poor speed sensor signal in the ABS computer's fault memory. The solution is to check the connection points and reconnect any loose connections.