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Replace a Spare part ABS sensor – a defective one or if the limit of use has been already reached. Find out useful information about ABS sensor

Faults of ABS and ESP sensors
  • incorrect operation of the sensors;
  • mechanical damage of the sensors;
  • short circuit or corrosion;
  • wiring fault.
Symptoms of ABS and ESP sensor faults
  • wheel slips during hard start or skids during emergency braking;
  • the ABS and ESP indicator readings;
  • loss of engine power;
  • increase in fuel consumption;
  • increase of braking distance on slippery roads.
Causes of ABS and ESP sensor faults
  • incorrect connection of sensors;
  • damage to the sensor chip;
  • faulty sensor fuses.
  • brake system malfunction;
  • systematic jump-starts of the car;
  • emergency braking at high speed.

Evaluation of the ABS and ESP sensors requires oscilloscope and multimeter. The resistance between the contacts of the sensor should be in the range of 1-1.5 kW. In case of exceeding resistance, check the fuse and wiring. The software also needs to be scrutinized, as electronic failures can cause mechanical error.

As a control the test replacement of sensors for known good ones is carried out. When trouble occurs with the test sensors, relating systems are checked. Also, when using non-original sensors, errors may cause insufficient alignment of contacts.

As part of the diagnosis it is necessary to evaluate the performance of the brakes. At a special stand the effectiveness of the traction control and anti-lock system are checked.

Repair and replacement of ABS and ESP sensors

To carry out repair works first you need to determine the source of the fault, which is possible only at a comprehensive diagnosis. If the sensor chips are damaged, it is quite possible to restore them, but this kind of work is very rare even in large garages.

When braking the vehicle at a speed above 100 km/h, overload can cause a malfunction in the settings of the sensor. In this case, their checkout and subsequent verification are required. Replacement of the defective items must be carried out only at service stations.

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FAQ: Frequently asked questions
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