What happens when your Kia key fob stops working

A Kia key fob that no longer locks, unlocks, or opens your trunk leaves you with a working car but a broken remote. You can still start the car with the physical key blade inside the fob, but you lose the convenience of remote access. The fob itself usually costs between $200 and $400 to replace through a Kia dealership, though the price varies by model year and which features the fob includes.

Before you buy a new one, it's worth checking whether the problem is the fob itself or something else. Dead batteries are the most common cause, and a replacement battery costs $5 to $15. If the fob has been dropped or exposed to water, the internal circuit board may be damaged. If your car won't respond to any fob — including a spare — the issue is likely your car's receiver, not the fob.

Key Takeaways

  • A dead battery is the most common reason a Kia key fob stops working, and replacing it costs $5 to $15 and takes five minutes.
  • A new Kia key fob from a dealership typically costs $200 to $400 depending on your model year and fob features.
  • You can buy aftermarket fobs online for $50 to $150, but they require programming to work with your specific car.
  • Dealerships program fobs while you wait, usually in 15 to 30 minutes, and can often do it the same day you call.
  • If you have a spare fob, you can sometimes program a new fob yourself using a sequence of key turns in the ignition, though this method varies by model.

Replacing the battery before buying a new fob

Open the fob by locating the seam along its edge — most Kia fobs split in half horizontally or have a small slot where you can insert a coin or flathead screwdriver. Gently pry the two halves apart. Inside you'll see a small round battery, usually a CR2032 or CR2025, printed with its type on the surface.

Note which side of the battery faces up, then remove it and replace it with a new one of the same type, keeping the same side facing up. Close the fob and test it. If the fob still doesn't work after a fresh battery, the internal circuit board is likely damaged and the fob needs to be replaced.

Buying a new fob from a Kia dealership

Call your local Kia dealership and tell them you need a replacement key fob. They will ask for your vehicle identification number (VIN), which you can find on your registration, insurance card, or the dashboard on the driver's side. The VIN tells them your exact model year and which fob type your car uses.

Dealership fobs arrive programmed to your car and ready to use — you don't need to do anything after you pick it up. The dealership can usually order a fob and have it in stock within a few days, though some locations keep common models on hand. Pricing typically ranges from $200 to $400, and some dealerships charge an additional programming fee of $50 to $100 if you bring in a fob from another source.

Buying an aftermarket fob online

Aftermarket fobs sold on Amazon, eBay, and other retailers cost $50 to $150 and work with Kia vehicles, but they arrive unprogrammed. You'll need to program the fob to your specific car before it will work. This requires either a trip to a dealership or a self-programming method if your model supports it.

When ordering online, search for your specific model year and body style — for example, "2019 Kia Sportage key fob" — because fob shapes and button layouts vary. Read the product description carefully to confirm it matches your car. Many aftermarket fobs include instructions for self-programming, though not all Kia models support this method.

Programming a new fob at a dealership

If you bought an aftermarket fob or need programming help, take the fob and your car keys to a Kia dealership. The technician will program the fob to your vehicle's receiver in 15 to 30 minutes while you wait. You'll need to show proof of ownership — your registration or title — and bring a valid ID.

Some dealerships charge $50 to $100 for programming a fob you didn't buy from them. Call ahead and ask about their programming fee before you go. If you have multiple fobs that need programming, the dealership can usually program them all at once for a single fee.

Self-programming a new fob if your model supports it

Some Kia models allow you to program a new fob yourself using a sequence of key turns in the ignition, but this method does not work on all years and models. The process typically involves turning the key from Off to On without starting the engine, repeating this cycle a specific number of times, and then pressing buttons on the new fob. The exact steps vary by model year.

Check your owner's manual for the self-programming instructions for your specific car. If your manual doesn't include instructions, your model likely requires dealership programming. Attempting the wrong sequence won't damage anything, but it won't program the fob either. If self-programming doesn't work after a few attempts, take the fob to a dealership.

What to do if you've lost all your key fobs

If you've lost every fob and only have the physical key blade, you can still drive your car by inserting the blade into the ignition and turning it to start the engine. However, you'll need to get at least one new fob programmed so you can lock and unlock the doors remotely again.

Contact a Kia dealership with your VIN and proof of ownership. They can order a new fob and program it to your car. Some dealerships may ask you to prove ownership of the vehicle before they program a fob, especially if you've lost all remotes, as a security measure. This process usually takes a few days if they need to order the fob, or the same day if they have it in stock.

Frequently Asked Questions

Can I program a Kia key fob myself?

Some Kia models support self-programming using a key-turn sequence in the ignition, but not all do. Check your owner's manual for instructions specific to your model year. If your manual doesn't include self-programming steps, your car requires dealership programming.

How much does a Kia key fob cost?

A fob from a Kia dealership typically costs $200 to $400 depending on your model year and which features it includes. Aftermarket fobs cost $50 to $150 but require programming. Programming fees at a dealership usually range from $50 to $100.

What if my key fob gets wet?

Remove the battery when ready and let the fob dry completely for 24 to 48 hours in a warm, dry place. Once dry, reinstall the battery and test it. If it still doesn't work, the internal circuit board was likely damaged by water and the fob needs to be replaced.

Can I use a key fob from a different Kia model on my car?

Fobs from different Kia models usually have different shapes and button layouts, and they won't work with your car without programming. Even if the shape matches, the receiver in your car is programmed to recognize only fobs coded for your specific vehicle. A dealership can tell you whether a particular fob is compatible with your model.

Do I need to bring my car to the dealership to program a new fob?

No. Most dealerships can program a fob using just your VIN and proof of ownership. However, some dealerships may ask you to bring the car so they can confirm the VIN matches and test the fob after programming. Call ahead to ask what your local dealership requires.