Question 1

How do I spot a fake locksmith before I get ripped off?

Accepted Answer

A few things to watch for. If they will not give you a real estimate for a 2020 Kia Stinger smart key over the phone, that is a sign. If the opening quote is suspiciously low and they plan to work out the real price on arrival, walk away. Search the business name and look for a real address, real reviews, and a consistent phone number. A locksmith who genuinely works on current Kia smart keys should be able to tell you without hesitation that the job requires a live OBD connection, security PIN access, and proper programming software. If they go vague when you ask what tools they use or what the process looks like, that is your answer. Kia owners on forums describe locksmiths who spend time at the car, say they cannot complete the job, and still charge a show-up fee. Ask the question before they arrive, not after.

Question 2

What exactly is a smart key and why can't I just copy it at a hardware store?

Accepted Answer

Your 2020 Stinger smart key is not a mechanical key with a chip glued to it. The fob communicates wirelessly with the vehicle's immobilizer using an encrypted rolling code. The immobilizer only recognizes fobs that have been formally enrolled through a diagnostic session. A hardware store key machine cuts metal. It has no way to talk to the immobilizer, no way to generate or transfer the security credentials the vehicle expects. The four buttons on the fob handle remote functions, and there is also a physical blade tucked inside for emergencies. All of that has to come together as a programmed unit. None of it happens over a key duplicator.

Question 3

What tools do you actually use to program a 2020 Kia Stinger key?

Accepted Answer

For the 2020 Stinger specifically, you need a professional-grade automotive key programmer capable of handling current Kia immobilizer systems, which means pulling a PIN through a live OBD connection and then running the full enrollment sequence. Not every tool that can read the PIN can also complete the programming step, and that gap is where a lot of jobs fall apart. I carry more than one capable platform so I have a fallback if one stalls on a particular vehicle.

For the blade, I decode or cut from the working key or from the vehicle's key code data. Kia and Hyundai share enough architecture that the same professional toolset handles both brands, but that does not mean the job is simple. Owners on locksmith forums are pretty clear that 2020 and newer Kia smart keys are specialty work. If someone shows up with a budget OBD dongle and a fob from an online marketplace, expect problems.

Question 4

I lost both keys to my 2020 Stinger. Is all-keys-lost even possible without going to the dealer?

Accepted Answer

Yes, and it is one of the more common calls I get on this model. All-keys-lost on the Stinger takes longer than an add-a-key job because the process involves a security reset before any new fob can be enrolled. The immobilizer has to be cleared of the old key records first, and that sequence has a built-in timed delay you cannot skip. Budget closer to an hour for the full job rather than the 20 minutes a simple spare key takes.

Bring your proof of ownership. On an all-keys-lost job with no working key present, ownership verification is not a formality. It is part of the process. Once the new fob is enrolled, the old lost keys are locked out of the system.

Question 5

My Stinger shows a key warning on the dash but the car still starts. What is going on?

Accepted Answer

Start with the CR2032 in the fob. A low battery can cause intermittent communication failures that trigger a key-not-detected type warning even when the car cooperates on that particular start. Swap the battery, make sure it seats flat against both contacts, and see if the warning clears.

If a fresh CR2032 does not fix it, the next thing to check is whether the warning is consistent or random. Random warnings that come and go often point to the battery contact in the fob or mild interference. A warning that stays on and starts affecting door handle response or start reliability points somewhere deeper, either the fob itself or something on the vehicle side that needs a proper diagnostic read. At that point it is worth having someone connect to the OBD port and pull any stored codes before assuming the fob needs replacement.

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