Where is the ABS sensor located on the Volkswagen Bora?

[DelGraham]

The ABS sensor of the Volkswagen Bora is located on the inner side of the car tires and can be seen when the car is lifted. There are three types of ABS sensors: linear wheel speed sensors, ring wheel speed sensors, and Hall wheel speed sensors. ABS, short for Anti-lock Braking System, functions by automatically controlling the braking force during car braking to prevent the wheels from locking up. This keeps the wheels in a state of rolling and sliding (with a slip ratio of about 20%), ensuring maximum traction between the wheels and the ground. How ABS works: During braking, ABS quickly determines if a wheel is about to lock up based on speed signals from each wheel speed sensor. It then closes the normally open input solenoid valve for the wheel that is about to lock, maintaining the braking force. If the wheel continues to lock, the normally closed output solenoid valve opens, causing the braking pressure on that wheel to drop rapidly due to the direct connection to the brake fluid reservoir. This prevents the wheel from fully locking due to excessive braking force. The system keeps the braking state at the optimal point (with a slip ratio S of 20%), ensuring the best braking performance and the safest driving conditions.