So, any time the ESP BAS light comes on, it could be that your brake switch is faulty and your brake lights are not lighting. Faulty Steering Angle Sensor. One of the most common reasons your ESP BAS light came on is a faulty steering angle sensor. The steering angle sensor works to help your car's steering wheel move in agreement with your ABS WARNING LIGHT ON? FIX IT IN 3 EASY STEPS 2CarPros 232K subscribers Join Subscribe Subscribed 61K 7M views 7 years ago This is a video tutorial on the top 3 most common things to check when 1. Faulty ABS speed sensor The ABS control unit receives data regarding each wheel's speed from the wheel sensors. When one or more wheels begin to slide, the ABS control unit monitors this data and makes the required adjustments. There are several faults that could be behind an ESP warning light on your dash. These are: Faulty Wheel ABS Sensors. The sensors in the wheels provide the ABS control unit with information about each wheel's speed. This allows the ABS to make the necessary corrections if one or more of the wheels slips. There are many causes which could make an ABS light come on. It doesn't always mean there is a problem with the anti-lock braking system directly. There could also be a problem with other sensors or components that it communicates with as well. Below are the top 6 causes of an ABS light coming on. 1) Low Brake Fluid VvQluM.

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