ABS is short for anti-lock brake system. As the name implies, this system is used to prevent your wheels from locking up by modulating the brake pressure automatically if you have to do an emergency stop. In other word, your car will not slide or skid in a sudden brake. The ABS control module makes the system working possible. The ABS module, as other all electronic parts in the car, can be damaged by impact, electrical overloads or extreme temperatures. Here are some symptoms indicating your ABS control module is going to fail: If the ABS warning light is lit; if the wheels slide during sudden stops, especially on slippery or wet pavement; if you find it is hard to press the brake pedal, you need to check it immediately. Once you decide to change it, we are glad to offer you all BMW genuine OEM ABS control module with a discounted price.