Replace Key Battery medium urgency

Dead Key Fob Battery (2024 Kia Telluride): How to Unlock, Start, and Replace the Battery

If your 2024 Kia Telluride key fob suddenly won’t lock/unlock or the vehicle won’t detect the fob, the most common cause is a dead fob battery. The good news: you can still get in and start the Telluride, then replace the battery in minutes.

Understanding Your Situation

The coin-cell battery inside the Telluride smart key has dropped below the voltage needed to transmit a strong signal. The vehicle may show a “Key not detected” message, reduced range, or no response from the lock/unlock buttons—especially in cold weather or after long periods without use.

🚀 Immediate Steps to Take

  1. Use the hidden mechanical key to unlock the driver’s door (slide the release on the fob to remove the emergency key, then insert it into the door lock cylinder—some trims have a small cover you may need to pop off carefully).
  2. Start the vehicle using the backup method: hold the smart key/fob against the START/STOP button (or directly in front of it) and press the brake, then press START. This allows the immobilizer to read the fob even with a weak/dead battery.
  3. Replace the key fob battery as soon as possible (most Telluride smart keys use a CR2032 coin battery in the US market; confirm by checking the old battery marking before buying).

Your Options

DIY battery replacement (CR2032 in most US Telluride smart keys)

Cost: $3-$12 Time: Same day

Open the smart key case, remove the old coin-cell battery, and install a new name-brand battery with the correct polarity. Test lock/unlock and remote start afterward.

âś“ Pros:
  • Fast and inexpensive
  • No programming required for a battery swap
  • Restores normal range and reliability
âś— Cons:
  • Risk of breaking plastic clips if pried incorrectly
  • Wrong battery type/polarity can cause continued issues

Battery replacement at an auto parts store or retailer

Cost: $5-$25 Time: Same day

Many parts stores and big-box retailers will sell the battery and may help install it (service varies by location).

âś“ Pros:
  • Convenient if you don’t have tools
  • Reduces chance of damaging the fob case
  • Often includes a quick function check
âś— Cons:
  • Not all stores will open/install key fob batteries
  • May pay more than DIY

Dealer service (battery install + inspection)

Cost: $0-$40 Time: Same day / 1-3 days

A Kia dealer can replace the battery and inspect the fob and vehicle for related issues (weak fob, damaged buttons, water intrusion).

âś“ Pros:
  • Professional handling and verification
  • Good choice if problems continue after a new battery
  • May be covered under a service visit or goodwill (varies)
âś— Cons:
  • Higher cost and time than DIY
  • May require an appointment

⚠️ What to Avoid

✕ Don’t repeatedly press the fob buttons for long periods—this can drain a weak battery faster and may confuse troubleshooting.

✕ Don’t use a metal screwdriver aggressively on the fob case; it’s easy to crack the housing or damage the internal circuit board. Use gentle pressure and a plastic pry tool if possible.

✕ Don’t assume it’s the vehicle battery or starter problem until you try the backup start method (fob held to the START/STOP button) and/or replace the coin-cell battery.

⚠️ Common Mistakes to Avoid

  • Using wrong battery type
  • Damaging case during opening
  • Not resetting after replacement
  • Buying expensive batteries

Frequently Asked Questions

Can I start my 2024 Kia Telluride if the key fob battery is dead?

Yes. Use the emergency key to get in if needed, then hold the smart key against the START/STOP button and press the brake while pressing START. This backup method lets the vehicle read the fob even if the battery is too weak to transmit normally.

What battery does a 2024 Kia Telluride key fob use?

Most 2024 Kia Telluride smart keys in the US market use a CR2032 coin-cell battery, but you should confirm by opening the fob and reading the number printed on the old battery before purchasing.

Do I need to reprogram the key fob after replacing the battery?

No. Replacing the coin-cell battery does not erase programming. If the fob still doesn’t work after a new battery, check battery orientation, ensure the contacts are clean, and consider fob damage or a vehicle-side issue.

Why did my key fob die so quickly?

Common causes include an old/low-quality battery, extreme cold/heat, the fob being stored too close to the vehicle (constant communication can increase drain), stuck buttons, or moisture intrusion.

⏱️ Urgency Note: Moderate urgency: you can usually still unlock and start the Telluride using the mechanical key and backup start method, but replace the battery promptly to avoid being locked out or stranded later—especially in bad weather or when traveling.

Related Information

Need Detailed Information?

Get vehicle-specific key fob compatibility, part numbers, and a complete price comparison for your 2024 Kia Telluride.

View Telluride Key Fob Guide →

Last updated: 2026-01-04