What is the reason for the ABS and handbrake lights on the Buick Excelle coming on?
1 Answers
The reason for the ABS and handbrake lights on the Buick Excelle coming on is that the module circuit uses electrolytic capacitors instead of solid-state capacitors. Over time, the electrolytic capacitors may leak, causing circuit corrosion and short circuits. The function of ABS: To maximize the effectiveness of the brakes, reducing braking time and distance. To effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability. To allow steering during emergency braking, ensuring good steering control. To avoid severe friction between the tires and the ground, reducing tire wear. The working principle of ABS: During braking, ABS quickly determines the wheel lock-up state based on the speed signals from each wheel speed sensor. It closes the normally open input solenoid valve for the wheel that is starting to lock, keeping the braking force constant. If the wheel continues to lock, the normally closed output solenoid valve is opened, causing the braking pressure on that wheel to rapidly decrease due to the direct connection to the brake fluid reservoir, preventing the wheel from completely locking due to excessive braking force. This keeps the braking state at the optimal point (slip ratio S of 20%), ensuring the best braking effect and the safest driving.
