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ABS sensor / Wheel speed sensor replacement

 

What is ABS Sensor(wheel speed sensor) and how it works?

An ABS (Anti-lock Braking System) also known as wheel speed sensor is an advanced braking system commonly found in newer cars. The anti-lock brake sensor or ABS sensor is a type of tachometer that monitors the rotational speed of the wheel and sends it to the Engine Control Module (ECM) of the vehicle. The ABS sensor is also referred to as the wheel speed sensor or the ABS braking sensor. Since all wheels do not spin at the same time, the ABS sensors communicate to the ECM the speeds of all four wheels based on which the ECM decides whether the wheels are locked. The ABS brake technology is smoother than the manual brake application. As a result, when the ABS is activated, a grinding noise is generated in some cars.
ABS sensor normally consists of two vital parts, a reluctor ring and a magnet wrapped in a coil. The interaction between the ring and the magnet generates an electrical field through which the signal is produced. This signal is then encoded to a digital signal and sent to the ABS controller. The driver shall assess the speed of each wheel accordingly.

What is ESP Sensor, and what does it do?

In nearly all critical driving situations, the electronic stability programme (ESP) supports the driver. It contains the anti-lock braking system (ABS) and traction control functions. This senses and effectively counteracts car skidding movements. This significantly improves driving safety.

Electronic stability control (ESC), also known as Electronic Stability Program (ESP) or Dynamic Stability Control (DSC), is a fully automated technology that enhances the stability of a vehicle by sensing and reducing traction.

As ESP senses lack of steering control, it applies the brakes immediately to help "steer" the car where the driver wants to go. Braking is automatically applied independently to tyres, such as the front wheel to avoid oversteer, or the rear inner wheel to counter understeer. Some ESP devices decrease engine power before control is restored.


What are the common Signs of faulty ABS Sensor or wheel speed sensor?

With the passage of time, exposure to road debris and other impurities can trigger the ABS sensor to malfunction. The cleaning and examination of the sensors at the intervals defined in the user manuals is essential to its optimum performance. Here are few signs of a faulty abs sensor.

Signs of faulty ESP Sensor are.

The ESP collaborates with the ABS which in some cases makes it difficult to find the root cause of the problem immediately. When the ESP begins to fail, you can start to experience accelerating problems. Here are few signs of a faulty esp sensor.

abs sensor

When should you consider replacing the ABS sensor?

The ABS sensors relay valuable information to the ABS Controller, which helps it to retain the stability and traction of your car on less grippy surfaces. Wet and snowy highways are your brakes ' biggest enemy, and your ABS device is the only protection against losing traction other than using winter tyres.
Furthermore, if you find you lose control while braking on wet roads, it indicates that the ABS sensors in your car are not working the way they should. In times like this, it is imperative to book your vehicle for a further check.

When should you consider replacing the ESP sensor?

The ESP sensors relay valuable information to the ABS device, which helps it to retain the stability and traction of your car on less grippy surfaces. Wet and snowy highways are your brakes ' biggest enemy, and your ABS device is the only protection against losing traction other than using winter tyres.

Furthermore, if you find you lose control while braking on wet roads, it indicates that the ESP sensors in your car are not working the way they should. In times like this, it is crucial to book your vehicle for a further check.


ABS Sensor / wheel speed sensor  Replacement Cost?

ABS sensor replacement cost can vary depending on the make and model of your car and the quality of parts needed to do the job, put your car registration and your postcodes to get the best rates available and get your car repair done by a professional mechanic.

 

Following are the statistics of ABS sensor / Wheel speed sensor replacement on common vehicles in the united kingdom.

Make Model Cost
Mercedes-benz SL 350 £ 172.89
Mercedes-benz C £ 140.98
Chevrolet AVEO £ 117.56
Mercedes-benz E Class £ 124.98