Hyundai Ioniq 5 N brake pad repair restrictions

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Ioniq 5 N cars from Hyundai do not appear to allow for DIY brake pad replacement, due to Electronic Parking Brake (EPB) system software restrictions, as discovered by a Reddit user. The story was picked up by specialist car media as an example of the ongoing issues with automotive right to repair. As of 17/11/2025, reporting has only brought attention to the case and provided commentary, without independent verification beyond the original Reddit post.

Hyundai has responded to coverage, stating that they are "actively exploring ways to make routine maintenance easier for all customers while upholding safety standards."

Background

Brake pads are a wear item universal to all cars, and have historically been a part commonly replaced by car owners as a routine maintenance task. The Ioniq 5 N was released in 2024 and as the typical lifespan of brake pads on an EV is around 100,000 miles, most users would not have needed to replace them by the time of the incident.

The addition of difficult-to-obtain software-based requirements for parts replacement is not exclusive to Hyundai within the automotive sector.

Initial Reddit post, and public attention

On October 30, 2025, Reddit user u/SoultronicPear submitted a post to the r/Ioniq5N subreddit where they detailed their struggles to replace the brake pads of their car. According to the post, the user discovered that the vehicle's Electronic Parking Brake (EPB) system prevented the replacement without specialized diagnostic tools. The user reported that the EPB must be retracted using proprietary software to accommodate new brake pads, and that post-installation recalibration is required.

The Reddit user stated they attempted to follow Hyundai's official procedures by purchasing a J2534 diagnostic tool subscription for $60 per week and compatible hardware costing between $800–$2,000. However, they reported being blocked by NASTF (National Automotive Service Task Force) with a message stating "DIYers are not permitted access" and requiring a business Federal Employer Identification Number. The user expressed frustration, stating "My blood is boiling," after being locked out of the system they had paid to access.

According to the Reddit post, dealers use a different Android-based Global Diagnostic System (GDS) that works seamlessly but costs approximately $6,000 and is not readily available to consumers.

Workaround

According to discussions documented by Hackaday, the Reddit user reportedly found a workaround using a Harbor Freight T7 bidirectional scan tool, which successfully issued parking brake retract commands, though it reportedly threw error codes in the process.

Hyundai's response

After being contacted by The Drive, Hyundai issued the following statements:

“Hyundai is committed to supporting both our dealer network and independent repair facilities with safe, secure, and accessible service solutions. For vehicles equipped with electronic parking brakes, including the Ioniq 5 and Ioniq 5 N, the official repair procedure requires placing the rear calipers in service mode using either our Global Diagnostic System (GDS) or the J2534 application. This ensures proper functionality and customer safety. Hyundai recently expanded access through an update to our J2534 application, enabling aftermarket users to perform functions previously restricted by the GDS secure gateway. While authentication through NASTF is required for sensitive operations, this step helps maintain security and accountability. Our official dealer tool (GDS) is also available for purchase by anyone.

Hyundai is actively exploring ways to make routine maintenance easier for all customers while upholding safety standards."

“We appreciate the interest in DIY repairs and will continue working toward solutions that balance convenience with security.”

Public response

The story gained traction across automotive and technology media outlets in mid-November 2025. The Drive characterized the situation as "a car repair task that has historically been totally DIY'able in a driveway is now relegated to shop-only because of technology," while noting that technically Hyundai may be compliant with right-to-repair legislation as written. Carscoops noted that while the repair "can be done," it requires "specialized tools or have deep pockets" with costs comparable to "a tired old hatchback from the classifieds." One Carscoops writer stated they were reconsidering purchasing an Ioniq 5 or Kia EV6 until this issue is resolved.