ABS systems, which are now fitted in cars as a standard feature, shorten braking distances; the system works in pulses, applying the brakes repeatedly for a very short time. This allows the driver to manoeuvre while braking, to avoid an obstacle. In addition to the ABS system, the ESP is also used, which additionally controls the direction of travel, and can adjust braking in the individual wheels so that the car does not deviate from its track. The ABS system uses wheel speed sensors, a pump and hydraulic valves, as well as an ABS pump controller. This is an electronic device that monitors braking based on readings from the sensors.
Signs of an ABS pump controller damage
The ABS pump controller has many electronic components that can be damaged. You may notice certain signs that indicate an ABS pump failure; this will be a warning light on the dashboard relating to the ABS or the whole engine. In some cases, the brake pedal may react differently, e.g. with less resistance or the car may stop braking. In addition, you may also encounter a situation where the brakes are locked completely. Another sign may be incorrect speedometer readings, which may be caused by a defective sensor in the wheels. If you notice abnormalities, you should contact a service technician as soon as possible, and they will know how to make the necessary repairs.
ABS pump controllers are quite complex devices so you may have trouble finding a garage where they will know how to find the fault in the controller. In many cases, it will be a much better idea to replace it with a new component or a replacement. New ABS pump controllers can be quite an expense so you can choose a remanufactured model that will be fully operational. Non-original replacements are also available, but in this case there may be compatibility problems, so it is worth choosing a remanufactured ABS controller that has previously worked in another car so you can be sure that it will fit your model.
Professionally remanufactured ABS controllers can be purchased at ABS pump controller repair. Controllers are available for many popular car makes, such as BMW, Volkswagen, Peugeot, Citroen, Fiat, Ford and many others. You can choose a controller dedicated to your model and vintage; these are controllers from reputable companies, such as e.g. Bosch.