Programming a key for a modern vehicle can sometimes feel like solving a high-stakes puzzle. A recent case involving a 2024 Kia Soul perfectly illustrates the challenges and solutions when dealing with advanced car security systems. After a full day of failed attempts to retrieve the car’s PIN code (check the previous post), the focus shifted to the next critical phase: successfully programming a new key.
The Challenge: A Used Key and a Locked Chip
The initial plan was to program a used, second-hand key fob to save the client time and money. However, this key presented a significant problem: its internal transponder chip (a 4A type) had a “Lock Status: Locked.” While some in the industry believe these Kia keys can be rewritten regardless of their locked status, this theory was about to be put to the test.
We also had a second option: a brand-new, blank transponder chip known as an “Autel AT100 Super Chip,” which could be generated and programmed for this specific vehicle.
The Test: Used Key vs. New Super Chip
After letting the car’s computer rest for over 19 hours—a crucial step to clear any potential security lockouts from the previous day’s numerous PIN retrieval attempts—the programming process began.
The Used Key Fails: First tried to program the used key with the locked chip. Despite using the correct, purchased PIN code, the programming failed. The key was rejected, proving that once a 4A chip from these models is locked, it is not reusable. This is a critical warning for locksmiths and owners purchasing used keys online: you may only be able to use the physical remote, not the transponder needed to start the car.
The Autel Super Chip Succeeds: Next, we used an Autel programmer to generate a new 4A super chip. This process involves creating a unique digital identity for the blank chip that is compatible with the vehicle. The result was a success. The newly generated chip was accepted and programmed into the car’s system without any issues.
Verification and Conclusion
The final, crucial test was to see if the new key would start the vehicle. It worked perfectly, finally resolving the two-day ordeal.
Key Takeaways for Technicians and Owners:
Locked Chips are Final: On this 2024 Kia Soul, a used 4A chip with a “Locked” status cannot be reprogrammed. This makes many used keys sold online useless for starting the engine.
Super Chips are the Solution: Programmable super chips, like the specific 4A chip from Autel used here, are essential tools for modern locksmithing. They provide a reliable and cost-effective way to generate new keys on the spot.
Tool Compatibility is Key:
The Xhorse tool also supports such keys, it requires a specific chip model (XT27B). In this instance, the Autel tool and its compatible chip were verified to work flawlessly.
This case underscores the importance of having the right tools and up-to-date knowledge. For anyone facing a similar situation with a modern Kia or Hyundai, a new, generatable super chip—not a used one—is the most reliable path to success.