FCW System Failed

FCW System Failed

FCW system failed Honda accord- Causes and Fixes!

FCW System Failed

The FCW system, which stands for Forward Collision Warning, is a safety feature in Honda vehicles that alerts drivers when a collision is ahead.

 However, if the system fails, drivers may receive a message indicating an “FCW system failed” error. 

The most common causes of FCW systems’ failure are blown fuses, bad weather, poor visibility, dirty windshields, failed sensors or cameras, and calibration. 

You can quickly fix these issues by checking each cause and then selecting the exact problem causing the FCW system to fail.

What is the FCW system, and how does it work?

The FCW system is designed to prevent rear-end collisions by alerting drivers of a potential collision with the vehicle in front of them. The system is activated when the car travels at a speed greater than 30 km/h or 18 miles per hour and detects a critical approach to the vehicle ahead.

It will then prepare the braking system for potential emergency braking and alert the driver through visual and audio signals, followed by a noticeable break jerk. Upon issuing the warning, the emergency braking system will automatically initiate partial braking to slow down the vehicle and give the driver additional reaction time. 

The predictive emergency braking system will provide additional support if the driver presses the brake pedal. The system continuously calculates the required level of vehicle deceleration to avoid a collision. If it senses that the driver is not applying enough braking pressure, it will increase the pressure to bring the vehicle to a stop before a crash occurs.

FCW system failed Honda Accord Causes

1.   Error Codes

One of the leading causes of the FCW system failing is an error code within the onboard computer. When an error is detected, the computer will send a message indicating a problem with the system. To troubleshoot this issue, it is recommended to get a scan of the onboard computer to see if there are any error codes present.

2.   Blown Fuses

A blown fuse is another typical reason for the FCW system to malfunction. There may be a separate fuse for the ABS and the FCW system in the fuse box for the FCW system, which is normally found in the engine compartment. All fuses should be checked, especially those with the VSA or ABS labels.

3.   Poor Weather or Visibility

Bad weather or poor visibility can also cause issues with the FCW system, mainly if it affects the camera behind the mirror. If the camera is obstructed or otherwise affected, it may cause problems with the system.

4.   Failed Sensor or Camera

The FCW system may also experience troubles because of a broken sensor or camera. While some Honda automobiles feature a sensor behind the front grille, others have a camera behind the mirror.

5.   Cascading effects

Finally, it is important to remember that difficulties with the FCW system can also be caused by faults with other systems inside the car. For instance, even though there is no direct connection between the issue and the FCW system, a misfire in cylinder three may result in problems that may have an impact on it. A similar issue inside the system could be brought on by a broken wheel speed sensor.

How to fix the FCW system failed Honda Accord?

Although it took me some time to identify the reasons why the FCW system failed, I made it simple for you so that you wouldn’t need to exert as much effort to recognise the causes. However, you will need to take the appropriate actions to remedy it once you identify the precise cause of the FCW system failure:

  1. Get a scan of the onboard computer: When you receive an FCW system failed warning, the first thing you should do is run an onboard computer scan. This will let you know whether any error codes can help you identify the problem. To achieve this, you can either use an OBD2 scan tool or acquire a free scan at most car dealerships. Call around to discover a place that provides this service.
  • Check for blown fuses: Check the fuse box inside the engine compartment for any fuses related to the ABS or FCW system. Look for fuses labeled VSA or ABS. If you find a blown fuse, replace it and see if the FCW system failed message goes away.
  • Check the camera: The camera behind the mirror on your Honda Accord causes an issue; you need to clean the camera and the area around it to see if that solves the problem. If the camera is damaged, it may need to be replaced.
  • Check the wheel speed sensors: Every tire on your Honda Accord has a speed sensor that reports how fast that tire is going to the onboard computer. If one of these sensors malfunctions or goes wrong, it can cause an error in the FCW system. Check the sensors and replace any that are not working correctly.
  • Recalibrate the FCW system: If the FCW system is re-calibrated, there is a chance that this will fix the problem. However, if it’s necessary to replace your car’s windscreen or other components of the system are damaged—this may also cause issues with FCW and lead you having go through dealership or repair shop in order get them fixed by professionals.

As an expert in car repairs and services, I gave the complete details regarding the FCW system failure, it’s causes and fixes as well.

 The various issues that can cause the FCW system to fail include blown fuses, bad weather, poor visibility, dirty windshields, failed sensors or cameras, and the need for calibration.

You can easily troubleshoot the system by getting a scan of the onboard computer to identify error codes and checking for low brake fluid or bad wheel sensors.

If you are unable to solve the issue, you may either have a certified mechanic service your vehicle or you can leave a comment below, and we will try our best to help you.


A: Go to a qualified mechanic if you need to replace the FCW module to resolve the failed FCW system issue. Before replacing the module, it is advised that you attempt cleaning the front of your car, starting the engine, or carrying out a control reset.

A: Depending on the root cause and seriousness of the problem, the cost to repair an FCW (Forward Collision Warning) system failure can change. The repair cost may be under $75 if the problem is straightforward, like dirty sensors or cameras. But more severe problems can cost up to $1,500 or more.

A: Installing a bull bar or modifying the front grille are aftermarket changes that may impact the FCW system’s performance and cause failure. It’s crucial to seek the manufacturer’s advice and adhere to their suggestions for system-compatible improvements.

A: Failure of the FCW system can be avoided by performing routine maintenance, maintaining clean sensors, and using the system by the manufacturer’s recommendations. Additionally, it’s critical to prevent front-end collision damage and pay attention to weather conditions that might affect the system’s functionality.

A: If your FCW system breaks while driving, it’s crucial to stay alert and ready to swerve if necessary. Getting a trained specialist or mechanic to examine and fix the system as soon as feasible is also advised. 

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