Learn about the cost to fix ABS sensor, the signs of a faulty sensor, and how you can replace it yourself with standard tools. Stay informed and save money! It’s normal for many of us to keep an eye on the dashboard while driving to check if any of the lights illuminate. So, imagine you’re driving, and suddenly, the Antilock Brake System (ABS) warning light illuminates. This light could point to many issues, but the actual reason might be a bad ABS sensor. If you need to get it replaced quickly, you might wonder: what will be the cost to fix ABS sensor?
The cost to replace an ABS sensor depends on the type of car you drive. However, there’s no need to panic if the sensor becomes faulty. With a jack, jack stands, and some standard tools, you might even be able to do the replacement yourself.
Our article will detail the signs of a bad ABS sensor and the cost of replacing it, helping you make an informed decision without unnecessary stress.
Table of Contents
What is an ABS sensor?
An ABS sensor is a wheel speed sensor that helps your car’s ABS know when to engage. The ABS activates during emergency braking situations to keep your wheels from locking up, allowing you to maintain control of your car and avoid accidents. These sensors are often installed on cars with ABS at each wheel, either joined into the wheel hub assembly or attached to the steering knuckle. The sensor is a magnetic pickup that detects the position of the rotating trigger wheel.
ABS sensors monitor each wheel simultaneously, sending readings to the central ABS module. The module evaluates each sensor’s reading in real-time against the car’s speed and each other to decide whether to activate the ABS brakes.
If a sensor isn’t reading info consistently or transmitting a reading, you must fix ABS sensor to ensure your braking system functions properly.
How much does it cost to fix abs sensor?
The anti-lock braking system (ABS) on your car is a secondary defense that prevents you from locking up your brakes. ABS sensors, also known as wheel speed sensors, are crucial in determining when the ABS should activate. In normal driving conditions, an ABS sensor may never fail. However, corrosion or damage to the wiring or the sensor itself can occur, causing faulty readings or no readings at all, necessitating a replacement.
You should expect an ABS or wheel speed sensor to last at least 100,000 km before needing replacement. Abs sensor repair cost depends on the car you drive, but you can expect to pay between $100-$150 for the sensor itself and between $100-$300 for labor costs. Cars operated in dusty regions or coastal areas with salty air usually experience problems more often.
How Does an ABS Sensor Work
An ABS sensor monitors the vehicle’s wheel speed and rotation to optimize brake and traction control through the ABS. These sensors are usually installed on the vehicle’s wheels and include two main components: a reluctor wheel (or tone ring) and a magnetic (or hall-effect) sensor. The reluctor wheel is mounted on the axle and rotates with the wheel, while the magnetic sensor transmits data to the ABS control module. This data helps determine when to trigger the ABS and how much force to apply to stop the vehicle without locking up the brakes.
The wheel speed information is also sent to the engine, navigation, transmission, and chassis control systems through data lines connected to the ABS control unit. If there is a problem with this process, you may need to fix ABS sensor to ensure your vehicle’s braking system works correctly.
Types of ABS Sensor
There are two types of ABS sensors: active sensors and passive sensors, which are discussed below.
Active ABS Sensor
The active ABS sensor activates only when voltage is supplied, generating an output signal. These sensors need an additional power source to operate. Magneto-resistive sensors have a sensing element connected to a two-pole electric cable or magnetic element. Compared to passive sensors, active sensors are more efficient because they provide highly accurate digital signals at slow speeds and can detect the direction of the wheel.
Passive ABS Sensor
Passive ABS sensors, also known as variable-reluctance magnets or inductive sensors, do not require an additional power supply. These sensors are placed on the impulse wheel, which is connected to the drive shaft. As the impulse wheel turns, the sensor detects the wheel speed by sensing the changes from tooth to tooth, causing a change in the magnetic field. This process generates an AC signal with varying frequencies based on the wheel’s rotation speed. The ABS control module then converts this AC signal into a digital signal.
Symptoms of ABS Sensor
If your car shows the following symptoms, you should consider replacing the ABS sensor.
Warning Light Illuminates
When the ABS wheel speed sensor fails, one of the first signs you’ll notice is the ABS light illuminating the dashboard. Initially, it might only be the ABS warning light, but if other systems also fail, the traction and stability control warning lights will illuminate as well.
ABS Stops Functioning
When a malfunction occurs, the system sends an alert, and the ABS warning light illuminates. The car’s electronic control module (ECM) stops receiving data from the sensor. The computer uses this information to determine if the wheels are locking up and need assistance. Without this data, the ABS stops functioning until it is repaired.
Traction or Stability Control Failure
When the ABS sensor fails, it not only affects the ABS but also results in losing traction control, stability control, roll stability, and hill-start assist. If the sensor stops receiving data, the computer shuts off these systems, even if the ABS warning light doesn’t illuminate. You might notice trouble maintaining traction in bad weather or handling issues when you stop quickly. These problems often point to a faulty ABS wheel speed sensor. Faulty electrical connections between the sensor and the ECM can also cause these issues, so it’s important to fix ABS sensor to ensure your vehicle’s safety systems function properly.
How Is an ABS Sensor Replaced
Here are the steps you must follow to ABS Sensor Replaced.
- The technician conducts a diagnostic examination of the ABS.
- The vehicle is raised, and the wheel with the issue is taken off.
- The ABS sensor wiring connector is unfastened and checked for damage.
- The ABS sensor is unbolted from the wheel knuckle. In many cases, the ABS sensor is integrated into the wheel hub, which must be replaced as an assembly.
- The new ABS sensor is fitted and secured.
- The wheel is reinstalled, and the car is lowered.
- The technician resets the associated ABS codes and conducts a road test to verify the repair.
How long does it take for an ABS sensor to replace?
A mechanic will typically need 54 to 66 minutes to replace the sensor. If one of the sensors fails, the mechanic can remove the tires and replace the faulty sensor.
Tips to Remember: Damage or corrosion in the ABS wiring can mimic a failed wheel speed sensor. Professional diagnosis is essential to avoid unnecessary repairs.
Conclusion
Addressing issues related to ABS sensors is crucial for maintaining vehicle safety and performance. Whether it’s replacing a faulty sensor or diagnosing wiring problems, taking prompt action ensures optimal functionality of your vehicle’s braking and safety systems. Understanding how much does ABS sensor repair costs can help you make informed decisions and prioritize necessary repairs.
Frequently Asked Questions (FAQs)
Can you drive with a broken ABS sensor?
However, it’s not recommended to drive without ABS if your car is equipped with it. This is because the ABS system assists in stopping safely under challenging conditions. If you find yourself in an emergency without ABS, make sure to pump your brakes slowly and gently to avoid skidding or sliding.
How long do ABS sensors last?
Their parts just need to fit and function until you sell your car. While the OEM part may last 15 years and 150K miles, the aftermarket part needs only last 5 years and maybe 30K miles to be acceptable. The cheap aftermarket parts may not fit well or work for more than 6 months.
What happens if you don’t fix your ABS?
If your ABS light is caused by a faulty ABS control module or hydraulic control unit, then your vehicle might have unresponsive brakes, erratic brake performance, and ticking noises. Your brakes can also suddenly engage. Eventually, a faulty ABS control module can even cause brake failure.
Can I replace the ABS sensor myself?
If your ABS sensor is bad, you’ll need to replace it. This is because a bad ABS sensor can cause your ABS to fail when you need it most. Replacing an ABS sensor is not a difficult task, but it should be left to a professional. They’ll have the tools and knowledge necessary to do the job right.
How do I bypass a faulty ABS sensor?
The ABS (Anti-lock Braking System) sensor is a critical component of your vehicle’s braking system, and it helps to ensure that your brakes are working properly. If you suspect that the ABS sensor is faulty, there are a few things you can do to bypass it, but please keep in mind that bypassing a faulty ABS sensor can be dangerous, and it is always recommended that you take your vehicle to a qualified mechanic for proper diagnosis and repair.
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I have a professional background with a Diploma in Information Communication Technology, which brings a blend of technical expertise and creative flair to my writing. Currently, I serve as a writer for Creativeoutrank LLC and contribute to their various websites.
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