You’ll need to determine how the fluid got out and repair the leak. It’s not as simple as pouring more fluid in. Start here if your brake warning light is on. The brake warning light should also be on. Typically, corrosion is the most common reason why the ABS module fails. The ABS pump can reduce the brake pressure at each wheel, which keeps them from locking up. If it becomes damaged and can no longer control all four brakes, the ABS light will activate. The ABS module controls the antilock brake system. The only sign of an ABS module problem should be a trouble code. Your Elantra’s stability assist shouldn’t be working if there’s a wheel speed sensor problem. When the wheel speed sensor no longer sends a signal to your Elantra’s ABS system (or the voltage value is out of range), the ABS light will be activated. It reduces brake pressure on that particular wheel to keep it from doing so. If one of the wheels is moving slower than the others, the ABS module recognizes that it is about to lock up. Wheel speed sensors monitor the rotational speed of each wheel and send it back to the ABS module. There is a wheel speed sensor on each of your Hyundai Elantra’s hubs. Wheel Speed Sensor A typical wheel speed sensor.Ī bad wheel speed sensor is the most common reason the ABS light comes on. Here are the five most common reasons the ABS Hyundai Elantra’s ABS light comes on: 1. Most auto parts stores will have a free scanning service they would gladly let you utilize. Not every OBDII scanner will give up this information. A scanner that can read them is vital to diagnosing why your Hyundai Elantra’s ABS light is on.Ī good code scanner will often tell you which part of the ABS system failed. If one of the wheels starts to lock up, it’ll apply the maximum amount of brake to that wheel to keep it from sliding. Your Elantra’s ABS system uses a system of sensors to determine wheel speed when braking. When on, it indicates that your car does not have Anti-Lock brakes and the safety they provide. Your Hyundai Elantra’s ABS Light comes on when it fails a self-diagnostic cycle.
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