The electric age promised simplified maintenance, but owners of the Hyundai Ioniq 5, and especially the sporty Ioniq 5 N, are starting to face a surprisingly complex and expensive problem lurking in the back. The simple procedure for replacing rear pads, once a routine task for any mechanic, is now turning into a real odyssey, requiring expensive software and special equipment.
The reason for this complication lies not in the pads themselves, but in the integrated electronic handbrake, writes the publication carscoops. Before any manipulation of dismantling the rear devices begins, this brake must be forcibly entered into the so-called service mode. Without access to specialized software and a diagnostic tool, this is practically impossible to happen. Attempting to manually release the mechanism carries a serious risk of damaging sensitive components, which would lead to even more expensive repairs.
In practice, there are only two "legal" ways to unlock the brake calipers. The first is to use Hyundai's official dealer platform – Global Diagnostic System (GDS). The complete set with the necessary hardware is sold at a price that will shock the average owner: around 6,000 US dollars. The second option is through a compatible J2534 diagnostic adapter, which technically allows access to the official program for a subscription fee. However, even this "cheaper" option is not at all affordable: the adapter itself costs around 2,000 dollars, and software access is charged additionally – for example, $60 per week.
The main obstacle that raises a barrier for independent repair shops and enthusiasts is not just the price, but the access lock. Using the necessary software requires authentication through the NASTF system, which is issued only to qualified, officially registered repair companies and mechanics. For the average driver, obtaining such access is a mission impossible. As a result, even for a simple replacement of rear pads, the majority of owners are forced to visit the official dealership.
Hyundai explains these strict restrictions with a concern for safety and the need to ensure the correct operation of the complex electronic braking system. After the problem gained publicity, the company officially commented that it had improved access to J2534 for independent repair shops, opening up some functions that were previously strictly reserved for GDS. Although they emphasize that they do not limit the right of owners to repair themselves, in practice it is obvious that without an investment of thousands of dollars in specialized tools and without official certification, the procedure remains practically impossible to perform at home or in small repair shops.