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Blind Spot Detection Device Calibration | Is It Important?

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Blind spot detection device calibration is crucial if you suspect your radar is out of alignment. The minor details of a blind spot monitoring system significantly impact its working. It keeps working without any error until you disorient the radar.

Due to the desynchronization of sensors, the system can face several hazardous errors. To deal with them, you must keep checking the calibration of your system at regular intervals. Calibration of blind spot monitors is a step that an individual can perform single-handedly. The only essential requirement for the process is the direct knowledge of blind spot system sensors.

Blind Spot Detection Device

Calibrating a blind spot detection device varies with the type of system and its technical complications. Some systems have single radar sensors. Therefore, they need less time for calibration. However, some have more than one radar and need more time to calibrate. Keep reading for a guide to calibrate the sensors and judge better whether you need the calibration or not.

Blind Spot Detection Device Calibration And Its Benefits

Blind spot systems perform exceptionally well if their installation process is free of errors. The system will not work if the radar sensors are out of alignment by a fraction.

Most of the time, drivers ignore the smaller desynchronizations of the system. However, one degree of disorientation can change several feet of detection range. For that reason, it directly changes the alarm area and causes unintentional damage to vehicles. A complete overview of blind spot detection device calibration and its benefits are as follows.

Blind Spot Monitor Calibration:

The term calibration is similar to repair in blind spot detecting device systems. Typically, only radars require the calibration process. But sometimes, the whole system requires synchronization for proper working.

Blind spot detection device calibration is the process in which the owner adjusts the radar sensors of a system at the correct angle, level, and orientation. The process typically involves a radar calibrating device and a calibration mat.

Calibration is not necessary for every vehicle. However, several factors subject the radar sensors to orientation and instant calibration. Some of them are as follows.

● Collisions:

Most of the time, the blind spot detection devices are at the back of a vehicle. That is why rear collision leads to an interruption in wiring or sensor alignment. Moreover, side collisions can also cause the radar sensors to desynchronize.

Sometimes, even a minor collision can change the radar’s direction that can remain unnoticed. To prevent that, try to attach the radar on the bracket if there is any in the package. Moreover, make the attachment as firm as possible by tightening the screws.

● Replacement:

While replacing the system wiring harness or radar sensors, an inexperienced worker can attach the blind spot detection device at the wrong degrees or angles. Furthermore, one can never be too sure of the radar installation procedures. Therefore, it is obligatory to calibrate the radar after the replacement.

There are some processes after which the device’s calibration becomes necessary. Some of these are as follows.

● Alignment Of Wheels:

Most of the time, the wheel alignment changes the height of the bumper from the ground. It causes variation in radar height that may or may not affect its detection range. Calibration of the radar sensor deals with the issue.

● Replacing The Windscreen:

Some system blind spot detection devices go on the windscreen or dashboard. Changing the windscreen can cause variation in its direction and orientation.

● Replacing The Bumper:

Most of the radars reside on the bumpers. In the case of plastic bumpers, the radar is inside them. Reinstalling them may divert their direction.

● Changing The Tires:

Changing tires can increase or decrease the vehicle height that changes the radar sensor height from the ground. So, it requires instant blind spot detection system calibration.

Blind Spot Detection Device 1

Benefits Of Calibrating A Blind Spot Detection Device:

A blind spot detection system requires calibration at regular intervals if the vehicle has been in an accident. Moreover, it is better to orient the radar sensor every 6 months because regular bumps and driving can desynchronize it.

The calibration of the blind spot monitoring system brings several factors with it. Some of them are as follows.

Pre-Diagnosis Of Errors:

Calibration is not only the adjustment of radar. Instead, it refers to the active maintenance of the detection device. Therefore, calibrating the sensor can help you diagnose radar errors before they become a potential risk.

Enhance Safety And Prevent Collision:

An uncalibrated blind spot detection device directs the microwaves in the wrong direction. Therefore, the detection area of the system covers irregular places and causes false detection. Calibration of the radar sensor ensures it is facing the right direction. It directs the microwaves in the correct direction, which minimizes the false detection rate. As a result, it saves the drivers from possible collisions.

Increases The Detection Range To Its Maximum Value:

Every degree of the angle and every millimeter of height impacts the detection range of a system. Therefore, it is best to install the blind spot detector system according to instructions. Even after the accurate installation, there is a chance of desynchronization if you replace the radar. Therefore, it is better to calibrate the sensor that helps the system to achieve its maximum potential.

Blind Spot Detection Device 2

Increases The Life Of Equipment:

Every technical piece of equipment requires regular maintenance and flawless installation to work correctly. Same as that, the blind spot detection device requires regular maintenance.

The system’s essential components, including the radar, are always outside the vehicle’s body. Therefore, they are constantly exposed to the environment. The harsh factors can cause several errors or divert them from the correct orientation. It causes permanent damage to the product.

The driver can minimize every damage and error by regularly calibrating the system. The repair and Maintenance process helps the system last years without any error.

Cost-Effective Audit:

An uncalibrated blind spot detection device can lead to permanent system failure. In that case, the only option remaining is to replace the entire blind spot detection radar system and install a new one from the start.

There is no choice but to start from scratch for the driver. Calibration of the system stops all that. Paying a couple of dollars to calibrate the system and ensure its proper working is better than paying thousands of dollars to buy a new one. Therefore, the experts refer to the calibration of blind spot radar sensors as a cost-effective audit.

Servicing Proficiency:

Calibration of the blind spot sensors monitor system gives assurance to the driver about product quality. Regular maintenance and check-ups increase the system’s efficiency and help it reach its maximum working potential.

On top of that, it helps the system to increase its detection accuracy. The calibration helps the driver assess whether the blind spot detection device matches the company’s regulations and standards.

How To Calibrate A Vehicle Blind Spot System?

The process of calibrating the blind spot detection system is not very difficult. A simple individual with minimum product knowledge can perform the steps with ease. You need a calibration device and a unique calibration mat to complete the process.

The calibration process is not the same. It differs with the reason of orientation. If you are calibrating your radar sensor because your car has been in an accident, the process may differ. The simplest steps to repair or calibrate a sensor are as follows.

Identify The Location Of The Sensors.

Mostly the sensors are at the lateral or rear sides of vehicles. However, some blind spot detector systems have special radars on the front. Identify the location of the sensor on both sides. Some sensors have a marking on them for easy identification. Make sure that it is visible at all times without any obstruction. If you can’t see it clearly, clean the blind spot detection device and eliminate metals blocking it.

Blind Spot Detection Device 3

Install The Calibration Mat:

The calibration mat helps to reorient the radar sensor to its original space. This mat comes with some blind spot monitor kits. So, you don’t have to buy a fresh one. Just place the mat as instructed and synchronize the sensor with it. Make sure to place it so the sensor can easily detect it.

Check The Alignment Of Sensors:

Now check whether the alignment of the radar is accurate. Some systems come with a protractor or angled arrow to measure their alignment. You must monitor several vital things to check whether the radar is out of alignment or not.

  • The angle radar makes with the car
  • The height of radar from the road
  • The angle radar makes with the road.

Every blind spot sensors monitor system has specific values for all three. Look inside the manual and calibrate the sensor as per instructions.

Calibrate The Sensors

Calibration is more effortless with the unique calibration device. However, one can perform the process manually. The manual calibration leaves numerous risks to the disoriented blind spot detection device. Some companies offer paid calibration strategies.

The calibration device does all the work by calculating the impact and desynchronization using computed algorithms. A fully automated device adjusts the radar sensor according to the data. However, some portray instructions on display for the technical worker to orient the radar manually.

The blind spot detection system warns you when another car is in your blind spot. But the system is not 100% accurate until you ideally install it. By following the steps mentioned above, you can calibrate the blind spot detection devices to increase their accuracy.

Manual Calibration:

To calibrate the radar manually, the driver suspends a plump bob at the reference points. It helps them to take measurements from reference points on the ground.

The driver uses the measured data and compares it with accurate reference points to detect the uncalibrated sensor. The last step is to orient the radar according to extracted data. The drivers can use a calibration mat to test whether the sensors are in place or not.

While replacing, you need to follow the typical installation instructions. Using a calibration mat and the device is optional. Yet, it is obligatory for the driver to orient the sensor using a protractor or angled arrow in the blind spot monitor kit.

Blind Spot Detection Device 4

Why Do We Need Blind Spot Detection Device Calibration?

A blind spot detection system is an electronic input device. The primary mechanism of detection of the system depends on the algorithms. For that reason, the functioning of the system is precise and delicate.

Inexperienced installation, unwanted collision, and rigorous driving can cause the radar to divert from the accurate direction. This disorientation can cause serious problems that pave the way for upcoming accidents.

Without repeated calibration sessions, the system can face the following conditions.

  • A blind spot detection device can lose its accuracy with time
  • It may fall out of specifications and reliable benchmarks
  • It may supply inaccurate measurements or stop providing any value at all.
  • It can threaten the quality of the product.
  • The system can become a leading cause of vehicle damage.
  • The life expectancy of vehicles and systems may reduce.

To minimize the error rates and ensure your safety, the driver must calibrate the detection device at least once a year. As for the calibration, the drivers can manually perform the process at home if they are experienced enough. Still, paying the firms for experienced and error fee calibration is better.

What Are The Disadvantages Of A Non-Calibrated Blind Spot System?

Ignoring the regular calibration of the radar sensor is a direct threat to your life. The primary purpose of the blind spot detection device is to make the vehicle and the driver safe. But the uncalibrated radar system does completely the opposite; It makes the driver and vehicle vulnerable to damage.

Some of the primary disadvantages of non-calibrated blind spot detection radar systems are as follows.

  • The disorientation makes the system prone to errors. Therefore, the owner can face errors like false or no detection at all and swapped warning light blinking. Sometimes, the system stops working entirely due to an error named system malfunction. A driver can avoid all these with proper and regular calibration of the blind spot detection device.
  • An uncalibrated blind spot detecting device system increases the overall error rate. Therefore, it increases the accident-to-damage ratio as well.
  • An uncalibrated blind spot system is a hazard for you and the adjacent road individuals. Driving a car on highways without a functional blind spot monitor is a crime in some regions. So, an uncalibrated blind spot system can result in a hefty fine amount for you.
  • An uncalibrated blind spot detection device can reduce the product’s overall lifespan. Constant exposure to damage and technical error cause permanent damage to the system and its components. It induces a negative impact on system properties and limits its functioning.
  • Continuous exposure to harsh environmental factors or damage can cause permanent damage to the radar sensor. It can make the entire system non-functional, which makes it non-fixable even after the calibration. The only possible solution then remains to replace the system or radar sensor. Therefore, we can say that ignoring the calibration process can cost you extra money.

What Is The Cost Of Blind Spot Detection Device Calibration?

Calibrating blind spot detection devices is not a complex process. However, it is a delicate one and needs excellent care. Therefore, it is better to appoint a technical worker for the task. Moreover, you can call the blind spot production firms as some also provide the service.

The blind spot calibration price can range from 300$ to 2000$. It depends on the firm, type of blind spot warning detection system, and complications of the process. Credible blind spot manufacturers charge more than some local aftermarket firms.

Is Calibration Obligatory For Factory Installed Blind Spot Systems?

Factory-installed blind spot detection devices come pre-installed in the vehicles from the firm. The vehicle firms optimize these systems according to the specific vehicle. Therefore, the chances of disorientation are minimum, and the error rate reduces.

However, this system can desynchronize with passing time due to certain factors. Some areas do not have well-built roads. Therefore, constant exposure to bumps can cause disorientation of the blind spot system. All of that makes the calibration necessary for the factory blind spot systems.

If your car has a factory-installed blind spot warning detection system, you must choose the relative service provider for calibration instead of a local aftermarket store. Choosing the respective vehicle firm will ensure ideal calibration and minimize potential collision hazards.


Calibration of a blind spot detection device plays a pivotal road in its working. It has a direct impact on the lifespan, detection range, and accuracy of the product. Moreover, the calibration ensures maximum product functionality and vehicle safety.

The blind spot system’s calibration can minimize the error origination rate of the product. It can stop the system failure and make the driver and vehicle resistant to damage. The process saves vehicles from unintentional collisions.

Choosing a credible firm for the calibration procedure is better. An experienced worker or service provider increases the chances of the ideal success of the process. Plus, it reduces the chances of problems throughout the orientation.

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