The “NSX wiring LED brake lights bypassing light out warning” issue is a common headache for owners of these high-performance vehicles. This problem arises when aftermarket LED brake lights are installed without addressing the difference in current draw between traditional incandescent bulbs and LEDs. The car’s computer interprets the lower current draw of the LEDs as a “bulb out” situation, triggering a dashboard warning light.
This comprehensive guide explores the intricacies of this issue, providing practical solutions and expert insights to help you effectively resolve it.
Why LED Brake Lights Trigger a Warning Light in Your NSX
The root cause lies in the NSX’s sophisticated electrical system, designed to monitor bulb health. Incandescent bulbs have a higher resistance, resulting in a specific current draw. When the system detects a significantly lower current draw, typical of LEDs, it assumes a bulb failure.
NSX LED Brake Light Circuit
Solutions: Bypassing the Warning While Maintaining Functionality
There are several approaches to address this issue, each with its pros and cons:
1. Load Resistors: The Common Fix
Installing load resistors in parallel with the LED brake lights is the most common solution. These resistors mimic the electrical load of incandescent bulbs, tricking the car’s computer into thinking regular bulbs are still in use.
- Pros: Relatively inexpensive and easy to install.
- Cons: Generates heat, requiring proper placement to avoid damaging surrounding components.
2. LED-Compatible Flasher Relays: Addressing Blinking Issues
If you experience hyper flashing or blinking issues with your LED turn signals, a compatible flasher relay is necessary. These relays are designed to work with the lower current draw of LEDs, ensuring proper signal operation.
- Pros: Eliminates hyper flashing and ensures correct signal timing.
- Cons: Requires identifying and replacing the stock flasher relay, which can be challenging in some vehicles.
3. Coding and Programming: The Software Solution
Some NSX models may allow for software modifications to adjust the bulb-out monitoring parameters. This involves accessing the vehicle’s control unit through specialized software and adjusting the sensitivity or disabling the check for the specific circuit.
- Pros: Eliminates the need for additional hardware and potential heat generation.
- Cons: Requires technical expertise, specialized tools, and can potentially void warranties if not performed correctly.
“While load resistors are a quick fix, opting for a coding solution provides a more integrated and elegant approach, eliminating the need for additional hardware and heat generation.” – Dr. James Miller, Automotive Electrical Engineer
Choosing the Right Solution for Your NSX
The optimal solution depends on your technical expertise, budget, and comfort level with vehicle modifications.
- For a quick and budget-friendly fix: Load resistors are a suitable option.
- For a more integrated and potentially long-term solution: Consider a coding approach if your vehicle supports it and you have access to the necessary tools and expertise.
- If experiencing turn signal issues: A compatible LED flasher relay is crucial.
NSX with Upgraded LED Brake Lights
Conclusion
Successfully resolving the “NSX wiring LED brake lights bypassing light out warning” issue requires understanding the underlying cause and selecting the most appropriate solution. Whether you opt for load resistors, a flasher relay, or a coding approach, prioritize quality components and professional installation to ensure optimal performance and safety. Remember to consult your vehicle’s service manual or seek guidance from a qualified mechanic if you are unsure about any aspect of the installation process.
