Understanding the Honda Collision Mitigation Braking System (CMBS)
The Honda Collision Mitigation Braking System (CMBS) is a crucial safety feature that helps prevent collisions by detecting potential hazards and automatically applying the brakes. However, like any system, problems can arise, and it’s essential to understand their causes and potential solutions to ensure optimal functionality.
Causes of CMBS Problems
1. Defective Sensors:
Faulty sensors, particularly the radar or camera sensors used by the CMBS to detect obstacles, can lead to incorrect readings and false activations or failures to engage when needed.
2. Software Issues:
Glitches or bugs in the software controlling the CMBS can disrupt its operation, causing it to malfunction or display inaccurate warnings.
3. Electrical Problems:
Electrical faults, such as loose connections or damaged wiring, can interfere with the power supply to the CMBS, affecting its performance.
Solutions to CMBS Problems
1. Diagnostic Tests:
The first step in addressing CMBS problems is to perform diagnostic tests using specialized equipment at an authorized Honda dealership or qualified mechanic. These tests can pinpoint the source of the issue, whether it’s a faulty sensor, software glitch, or electrical fault.
2. Sensor Replacement:
If defective sensors are identified, they must be replaced with genuine Honda parts to ensure proper calibration and functionality.
3. Software Updates:
Honda regularly releases software updates to address known issues and improve the performance of the CMBS. Dealerships can install these updates to resolve software-related problems.
4. Electrical Repairs:
Any electrical faults should be repaired by a qualified mechanic to restore the proper power supply to the CMBS. This may involve repairing loose connections, replacing damaged wiring, or addressing other electrical issues.
Prevention of CMBS Problems
1. Regular Maintenance:
Regular maintenance, including inspections and servicing, can help prevent future CMBS problems. This includes checking the sensors for dirt or damage, ensuring electrical connections are secure, and monitoring software updates.
2. Careful Driving:
Avoiding sudden braking or aggressive driving maneuvers can reduce the likelihood of sensor malfunctions or false activations.
3. OEM Parts:
When replacing or repairing CMBS components, always use genuine Honda OEM parts to ensure compatibility and optimal performance.
The Honda Collision Mitigation Braking System is a vital safety feature that enhances protection against collisions. Understanding the potential causes of problems and their solutions empowers drivers to promptly address issues and maintain the system’s functionality. Regular maintenance, careful driving habits, and the use of genuine Honda parts can help prevent problems and ensure the CMBS operates effectively, providing peace of mind on the road.
Honda Collision Mitigation Braking System Problem FAQs
What are the symptoms of a problem with the Honda Collision Mitigation Braking System (CMBS)?
Unexpected braking, illuminated dashboard warning lights related to CMBS or braking, and a lack of power while driving.
What are the potential causes of CMBS problems?
Loose turbo tube, camera malfunction, electrical issues, or software glitches.
What should I do if I suspect a problem with my CMBS?
- Check for any obstructions blocking the camera lens.
- Inspect electrical connections for security and corrosion.
- Reset the system by disconnecting and reconnecting the battery terminals.
- Contact Honda to inquire about software updates.
- Seek professional assistance from a qualified Honda technician if self-troubleshooting fails.

Collision Mitigation System Repair Issues
Characteristic | Advice / Key Points |
---|---|
OEM parts required for warranty coverage | Dealers must obtain parts directly from Honda. |
Extended wait times for ECU replacements | Delays may be due to part shortages or supply chain issues. |
OEM parts available from third-party sellers | No warranty applies for parts installed from non-dealer sources. |
Limited stock and higher prices from OEM parts sellers | Customers may experience higher costs and reduced availability. |
Lengthy vehicle downtime due to part shortages | Customers may face extended repair times. |
Supply chain issues and part shortages pose challenges | Dealers and customers may experience difficulties and delays. |
Dealers may accept OEM parts from third-party sources | No warranty applies in such cases. |
Honda supplies parts directly to OEM parts sellers | Stock levels and prices may differ from dealers. |