2013 Hyundai Tucson
Key Replacement - Save vs Dealer in San Diego

Q: Can you delete a lost or stolen fob from my 2013 Tucson so it can't start the car?

Yes. The programming routine on these erases all stored key data and re-registers only the fobs physically present during that session. Lost key, stolen fob, spare you gave someone and want back out of the system: all of it gets wiped. Whatever isn't handed to me during programming won't start the vehicle after we're done.

Q: Does the 2013 Tucson smart fob have a hidden emergency blade inside it?

Yes. There's a small release button on the back of the fob. Press it and the metal blade slides out. That blade fits the driver door lock cylinder and gets you into the car manually when the fob battery is completely dead or the vehicle isn't responding to the wireless signal. Worth knowing: some 2013 Tucsons that were sold used or fleet-turned are missing that blade entirely. Previous owners remove it and it doesn't come back with the car.

Q: My 2013 Tucson starts fine but the door handle touch unlock stopped working. Is the fob the problem?

Probably not. If the car starts and the push-button recognizes the fob inside the cabin, the key is doing its job. Touch-unlock on the door handle is handled by a sensor built into the handle itself, and those sensors on this generation Tucson have a known tendency to get flaky, especially on the driver side. Moisture, dirt buildup, or a wiring issue at the handle are the usual causes.

Q: I bought a replacement fob online for my 2013 Tucson. Can I program it myself?

No. The 2013 Tucson Smart Key system doesn't have a DIY button sequence or ignition-cycle trick for adding a fob. Programming requires a diagnostic tool connected to the OBD port to write the new key into the vehicle's immobilizer. There's no workaround for that. If you already bought the fob, it's not a waste. Bring it to me and I can pair it to your car on site, as long as it's a compatible blank.

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2013 Hyundai Tucson
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2013 Hyundai Tucson Smart Key Replacement - Fast, Affordable & Professional

I got a call out to Cardiff-by-the-Sea on a Saturday afternoon. The owner had a 2013 Tucson and a situation that had already eaten most of her morning.

She had one working key. Her second fob had stopped being recognized, and she'd been putting off dealing with it for a few weeks. Then her primary fob started acting up too. By the time she called me, she was down to one unreliable key and a car she wasn't confident taking anywhere.

She'd already been on the phone with the dealer in the area. The quote she got assumed she'd need to tow the car in, and the number they gave her for two keys made her pause long enough to look for another option. That's when she found me.

I pulled up to her place off San Elijo and we talked through it for about two minutes. Both fobs were present, which meant this wasn't an all-keys-lost situation yet, but it was close. I connected to the diagnostic port, pulled the key data, and confirmed the second fob had dropped out of the system. The primary was still registered but had clearly been marginal for a while.

The job was to add a new key while the working fob was present, then sort out why the second had failed. Turned out the second fob's battery contact had a slight corrosion film on it, enough to make the fob look dead. Cleaned it, reseated a fresh CR2032, re-registered it. Both keys solid.

She asked me the OEM versus aftermarket question before I left. Honest answer: the aftermarket blank I used was quality-sourced, tested against real Tucson units before I ever stock it. The circuit does what it needs to do. The only thing missing was the logo on the back. She said she didn't need the logo. Neither do most people.

The dealer quote was still sitting in her recent calls when she paid me. She'd saved a good chunk, never left her driveway, and had two working keys before lunch.

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2013 Hyundai Tucson

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Hyundai Tucson Mobile Service FAQ

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What is the cheapest way to handle all-keys-lost on my 2013 Tucson?▼

Call a mobile locksmith who works Hyundai smart key jobs regularly before you even think about the dealer. All-keys-lost on the 2013 Tucson requires reading the PIN from the vehicle and running a full key registration through the diagnostic port. Dealers quote this job at a number that tends to make owners wince, and that's before towing if the car is stranded.