Question 1

Do you use OEM or aftermarket keys on Hyundai vehicles?

Accepted Answer

We use verified OEM-spec blanks that are matched to your specific vehicle. This matters more than people expect. A fob that looks identical to the correct one can have different internal electronics, and if the transponder chip does not match what your car's immobilizer is expecting, the programming process fails before it starts. Aftermarket fobs sourced from generic online listings have a real failure rate on Hyundai vehicles. We have seen it come up repeatedly in locksmith forums. We start with a blank we know is correct for your car so the job works the first time.

Question 2

How long will a replacement key last on a 2023 Kona?

Accepted Answer

The programming does not wear out. A properly registered fob stays paired to the vehicle unless the immobilizer is reset or the fob is physically damaged. Battery is the main maintenance item, and most owners get a year or two per cell with normal use. Shell quality is a separate conversation. Hyundai owners on forums have noted that the plastic housing on newer fobs can feel thin and chip with regular pocket carry. We use quality housings, not the cheapest shell available, because a fob that cracks apart in six months is not a good outcome for anyone.

Question 3

What if the new key stops working a few weeks after you program it?

Accepted Answer

Call us. The work is covered under our warranty.

That said, when a properly programmed fob stops working on a 2023 Kona, the cause is often on the vehicle side rather than the key itself. The immobilizer and the vehicle security system can lose sync with a fob after a software update or a module reset. We have seen cases where both the primary and spare key stopped being recognized on the same day, and the fob was never the problem. We troubleshoot the actual source rather than just handing you another fob and hoping.

Question 4

I lost all my keys to my 2023 Kona. Can you still make a replacement, or does it have to go to the dealer?

Accepted Answer

All-keys-lost on the 2023 Kona is a job we handle on site. It does not have to go to the dealer. The process involves resetting the immobilizer through the diagnostic port and registering a new fob from scratch. Because the system has a built-in security delay during that reset, the job takes a little longer than a simple spare-key add, usually closer to 45 minutes. Any previously lost fobs are cleared out of the system in the process, so they cannot be used to start the vehicle. We come to you in Santee, including Carlton Hills, so the car does not have to move.

Question 5

My 2023 Kona shows a key warning on the dash but the fob battery is new. What is going on?

Accepted Answer

A few things can cause this. First, confirm the battery is seated correctly and making clean contact with the terminals inside the fob housing. A new battery that is slightly off-position reads the same as a dead one. Beyond that, 2023 Kona owners have reported intermittent key-not-detected warnings that are not related to the fob at all. The antenna that reads the fob signal inside the cabin can have connection issues, and if that antenna is not communicating cleanly with the vehicle security system, the car loses the fob even though the fob is working fine. If the warning is intermittent and the fob works sometimes but not others, that is worth diagnosing before replacing anything.

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