The Brake Light Problem with Hyundai Ioniq 5: A Potential Safety Hazard

🚦The brake lights on the Hyundai Ioniq 5 do not illuminate in one-pedal driving mode until the accelerator pedal is completely released.

🚗This can put drivers at risk of rear-end collisions, as the absence of brake lights can prevent following drivers from knowing that the car is rapidly slowing down.

🔌Hyundai's i-Pedal mode allows for aggressive regenerative braking, but the brake lights only come on when the pedal is fully released.

📜While this may not violate federal motor vehicle safety standards, it is a serious safety concern that needs to be addressed.

🛠️Hyundai should update the i-Pedal mode to activate the brake lights based on the position of the accelerator pedal to ensure driver and road safety.

Why don't the brake lights on the Hyundai Ioniq 5 illuminate in one-pedal driving mode?

—The brake lights on the Hyundai Ioniq 5 only come on when the accelerator pedal is completely released, which is the condition for engaging the service brakes. Since one-pedal driving uses regenerative braking, which is not considered part of the service brakes, the brake lights do not illuminate.

What is the potential danger of this issue?

—The lack of brake lights in one-pedal driving mode can prevent following drivers from knowing that the car is rapidly slowing down, increasing the risk of rear-end collisions. It can also lead to drivers being rear-ended, receiving tickets for malfunctioning brake lights, or being found partially at-fault in accidents.

Does this issue violate federal motor vehicle safety standards?

—Technically, no. Federal motor vehicle safety standards require brake lights to activate when the service brakes are engaged, which does not include regenerative braking. However, this does not negate the fact that it is a serious safety concern that should be addressed.

What should Hyundai do to resolve this issue?

—Hyundai should update the i-Pedal mode to activate the brake lights based on the position of the accelerator pedal. This would ensure that the brake lights illuminate whenever the car is slowing down, regardless of the braking system being used.

Are other Hyundai models affected by this issue?

—While the specific issue has been observed in the Hyundai Ioniq 5, it is possible that other Hyundai models with similar one-pedal driving modes may also have the same problem. Further investigation is needed to confirm this.

00:00Introduction to the brake light problem with the Hyundai Ioniq 5

01:18Explanation of the need for brake lights in vehicles

02:06Demonstration of the issue with the Hyundai Ioniq 5's brake lights in one-pedal driving mode

09:57Discussion of the potential dangers and implications of the brake light issue

12:22Comparison with other electric vehicles and their brake light systems

18:08Explanation of the regulatory standards regarding brake lights and service brakes

18:46Request for Hyundai to address and resolve the brake light issue

19:19Conclusion emphasizing the need for immediate action to ensure driver and road safety