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Dead Key Fob Battery on a 2024 Chevy Tahoe: How to Get Back In and Start It

If your 2024 Chevrolet Tahoe key fob battery is dead, the truck may not unlock normally and you may see “Key Fob Battery Low” warnings beforehand. The good news: you can still get in using the hidden mechanical key and start the vehicle using the built-in backup detection method.

Understanding Your Situation

The coin-cell battery inside the Tahoe’s remote transmitter has dropped too low to power the lock/unlock and remote-start functions reliably. In most cases, the fob still contains a passive RFID/backup function that can allow the vehicle to recognize the key at close range, but you’ll need to use the correct emergency unlock and start procedure.

🚀 Immediate Steps to Take

  1. Use the mechanical (hidden) key inside the fob to unlock the driver’s door if the buttons don’t work.
  2. Start the Tahoe using the backup key-detection method (hold/place the fob at the designated backup location per your owner’s manual, then press the brake and push START).
  3. Replace the fob battery with a new coin cell (commonly CR2032 on many GM fobs, but verify your exact fob type/owner’s manual before buying).

Your Options

DIY key fob battery replacement (coin cell)

Cost: $3-$15 Time: Same day

Open the fob case carefully, swap in a new coin-cell battery (match the exact type and polarity), then test lock/unlock and starting. Inspect the rubber seal and make sure the case snaps fully closed.

âś“ Pros:
  • Lowest cost fix
  • Fast and usually restores full function immediately
âś— Cons:
  • Using the wrong battery type or installing it upside down can keep the fob from working
  • Prying the case incorrectly can crack the housing or damage the seal

Have a dealer or independent shop replace the battery

Cost: $0-$30 Time: Same day

A service advisor or technician replaces the coin cell and confirms the fob works and the vehicle recognizes it. Helpful if you’re unsure how to open the fob without damage.

âś“ Pros:
  • Reduces chance of damaging the fob case
  • Quick verification that the issue is truly the battery
âś— Cons:
  • May require a trip/appointment
  • Some locations charge a small labor fee

Replace the key fob (if battery replacement doesn’t solve it)

Cost: $200-$450 Time: Same day / 1-3 days

If a new battery doesn’t restore normal operation, the fob may be damaged (water intrusion, worn contacts) or the vehicle/fob may have another issue. A replacement fob must be correctly programmed to your Tahoe.

âś“ Pros:
  • Resolves issues caused by a failed or damaged transmitter
  • You can add an extra spare at the same time
âś— Cons:
  • Higher cost than a battery
  • Programming usually requires dealer or capable automotive locksmith equipment

⚠️ What to Avoid

✕ Don’t force the door handle or try to pry the door open—use the hidden mechanical key to prevent damage.

✕ Don’t install a “near match” battery size or a used/cheap off-brand cell; low-quality cells can fail quickly or cause intermittent range issues.

✕ Don’t touch both sides of the new coin cell excessively with bare fingers; oils can reduce contact quality—handle by the edges when possible.

⚠️ Common Mistakes to Avoid

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

Frequently Asked Questions

Can I still start my 2024 Tahoe if the key fob battery is dead?

Usually yes. The Tahoe typically has a backup key-recognition method that works at close range even with a dead fob battery. Use the procedure in your owner’s manual (often involving placing/holding the fob at a designated spot inside the vehicle) and then pressing the brake and pushing START.

What battery does a 2024 Chevy Tahoe key fob use?

Many GM key fobs use a CR2032 coin-cell battery, but there can be variations by fob style/trim. The safest approach is to confirm by checking your owner’s manual or opening the fob and reading the battery marking before purchasing.

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

No—battery replacement alone typically does not require reprogramming. If the fob still doesn’t work after a fresh battery, the fob may be damaged or there may be a separate vehicle-side issue.

Why is my range still poor after installing a new battery?

Common causes include an incorrect battery type, the battery installed upside down, bent/dirty internal contacts, or interference. If the fob works only very close to the vehicle, inspect the contacts and confirm the battery is new and seated properly.

⏱️ Urgency Note: Low urgency if you can unlock and start using the backup methods, but replace the battery soon—being stranded is more likely if the fob battery fully fails when you’re away from home or if the mechanical key isn’t accessible.

Related Information

Need Detailed Information?

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

View Tahoe Key Fob Guide →

Last updated: 2026-01-04