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2024 Chevy Malibu Dead Key Fob Battery: How to Unlock, Start, and Replace It

A dead key fob battery on a 2024 Chevrolet Malibu can prevent remote lock/unlock and may trigger a “Key Fob Battery Low” message before it fails completely. The good news: you can still get into the car and start it using the built-in backup methods, then replace the battery in minutes.

Understanding Your Situation

The coin-cell battery inside the Malibu’s keyless-entry fob has discharged, so the fob’s radio signal is too weak (or gone) for remote functions and may not be detected normally by the vehicle.

🚀 Immediate Steps to Take

  1. Unlock the driver door with the hidden mechanical key: press the release on the fob to remove the key blade, then use it in the driver door key cylinder (you may need to pop off a small cap/cover depending on trim).
  2. Start the car using the backup fob-detection method: hold the fob against the designated backup location (commonly the pocket/slot inside the center console or another marked area) and then press the brake and push the START/STOP button. If unsure, check the owner’s manual for the exact location for your trim.
  3. Replace the fob battery as soon as possible: open the fob case carefully, swap in a new coin-cell battery of the same type (match the number printed on the old battery), ensure correct polarity, then test lock/unlock and remote start (if equipped).

Your Options

DIY key fob battery replacement (recommended first)

Cost: $3-$12 Time: Same day

Open the key fob housing, remove the old coin-cell battery, and install a new one of the same type. Reassemble the fob and confirm all functions work.

âś“ Pros:
  • Fast and inexpensive
  • No programming needed for a simple battery swap
âś— Cons:
  • Risk of cracking the fob case if pried incorrectly
  • Using the wrong battery type or installing it upside-down can cause continued issues

Battery replacement at an auto parts store or repair shop

Cost: $0-$25 Time: Same day

A store or shop replaces the coin-cell battery for you; some also test the fob output and check battery orientation/fit.

âś“ Pros:
  • Less chance of damaging the fob
  • Often includes quick testing/verification
âś— Cons:
  • May require a trip during business hours
  • Not all locations stock every coin-cell type

Dealer diagnosis (if battery replacement doesn’t fix it)

Cost: $50-$200+ (diagnosis); $200-$500+ (new fob + programming if needed) Time: Same day / 1-3 days

If a new battery doesn’t restore operation, the dealer can check for a failed fob, receiver/antenna issues, or vehicle-side problems and confirm whether a replacement fob is needed.

âś“ Pros:
  • Correct troubleshooting for vehicle-side issues
  • OEM parts and proper programming if a new fob is required
âś— Cons:
  • Highest cost option
  • May require an appointment and waiting time

⚠️ What to Avoid

✕ Don’t force the fob open with a large screwdriver or metal tool that can crack the housing or damage the circuit board—use gentle pressure and a plastic pry tool if possible.

✕ Don’t install a different battery type or stack batteries; match the exact number printed on the original coin cell and confirm polarity (+/-).

✕ Don’t leave a weak battery in place for long—intermittent detection can strand you, especially if you rely on keyless entry or remote start.

⚠️ 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 Chevy Malibu if the key fob battery is dead?

Yes. Even with a dead fob battery, the Malibu has a backup method. Unlock with the hidden mechanical key if needed, then place/hold the fob at the vehicle’s designated backup detection spot (often in the center console area) and press the brake and the START/STOP button. The exact location can vary by trim—verify in your owner’s manual.

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

Typically, no. A battery replacement does not erase programming. If the fob still doesn’t work after a correct battery swap, the fob may be damaged, the battery may be installed incorrectly, or there may be a vehicle-side issue that needs diagnosis.

What battery does the 2024 Malibu key fob use?

It uses a coin-cell battery, but the exact type can vary by fob design. The most reliable method is to open the fob and match the battery number printed on the original coin cell (for example, CR2032 is common in many fobs).

Why does my Malibu say “Key Fob Battery Low” but it still works sometimes?

As the coin-cell weakens, the fob signal becomes inconsistent. It may work at close range or after multiple presses, then fail unexpectedly. Replacing the battery promptly prevents a no-start/no-entry situation.

⏱️ Urgency Note: Moderate urgency: you may still be able to drive using the backup start method, but a fully dead fob battery can leave you locked out or unable to start at an inconvenient time. Replace the battery soon and keep a spare coin cell in the glove box.

Related Information

Need Detailed Information?

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

View Malibu Key Fob Guide →

Last updated: 2026-01-04