![]() The first thing is to check your tire pressures. In some cases, if you find anything amiss and can correct it, you may be able to solve the problem. ![]() While you’ll probably need to have someone use a special scanning tool to determine where the problem lies, there are some simple things you can probably do yourself before taking that step. There are multiple parts to the ABS, and unfortunately, any of them can fail and cause the warning light to illuminate. If the computer determines that one or more wheels are stopped or going more slowly than the others when the brakes are applied - indicating they’re either locked up or starting to be - the computer will reduce some of the pressure (thus clamping force) on that wheel’s brake, thereby allowing the wheel to turn more easily and regain its grip on the road. A wheel-speed sensor is mounted above the ring and can detect when each of those teeth passes by, and it feeds that information to a computer that can determine the speed of each wheel at any given time. With ABS, there is a ring on each wheel hub (or some other component that rotates with the wheel) that looks a bit like a small bicycle sprocket with “teeth” on it. Most automatic braking systems can also detect which wheels are locked up and only reduce braking on those wheels, affording even better control. That’s essentially what ABS does automatically, though the system can do it much more quickly than a person can. Before ABS, drivers were taught to pump the brakes if they were skidding, which allowed the car to slow somewhat when the brakes were on and steer somewhat when the brakes were off. ![]() ![]() If you lock up the wheels while braking (which can easily happen on slick surfaces), the tires lose much of their grip on the road, lengthening stopping distances and severely hindering the ability to steer the car where pointed. Related: Is Your Check-Engine Light On? 5 of the Most Common Causes Why ABS Is Important If, however, you find the ABS light illuminated, it means the safety system is not functioning, even if your brakes otherwise feel as though they’re working properly. It was aimed at preventing the wheels from locking up and causing a skid when braking on slick roads, thereby providing shorter stopping distances and better steering control. The antilock braking system, or ABS, is a safety feature that became common on new vehicles starting in the 1980s and ‘90s. ![]()
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