Replace Key Battery medium urgency

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

If your 2024 Ford Edge key fob suddenly stops unlocking the doors or the vehicle says it can’t detect the key, the fob battery is likely dead. The good news: you can usually still get in and start the Edge using the built-in backup methods, then replace the battery in minutes.

Understanding Your Situation

The coin-cell battery inside the Ford smart key fob has run down, so the fob can’t transmit a strong enough signal for remote lock/unlock or push-button start detection. The key fob itself is usually fine—power is just too low.

🚀 Immediate Steps to Take

  1. Use the hidden/mechanical key inside the fob to unlock the driver’s door (look for the release on the fob to slide the emergency key out, then use the door’s key cylinder—often behind a small cover on the handle).
  2. Start the vehicle using the backup key detection method: with your foot on the brake, hold/place the fob against the designated backup location (commonly inside the center console/cupholder area or near the steering column) and press START/STOP. If you’re unsure, check the owner’s manual for the exact spot.
  3. Replace the fob battery as soon as possible (most Ford smart fobs use a CR2032 coin cell, but verify your specific fob before buying).

Your Options

DIY key fob battery replacement (recommended for most owners)

Cost: $3-$10 Time: Same day

Buy the correct coin-cell battery and replace it by opening the fob case carefully (use the emergency key as a lever point where designed). Test lock/unlock and starting afterward.

âś“ Pros:
  • Lowest cost and fastest fix
  • No programming needed for a battery change
âś— Cons:
  • Easy to crack the case or damage seals if pried incorrectly
  • Wrong battery type/cheap cells can fail early

Battery replacement at a dealership or independent shop

Cost: $0-$30 Time: Same day

A service advisor/technician replaces the battery and confirms the fob works, sometimes as a courtesy service.

âś“ Pros:
  • Less risk of damaging the fob
  • Quick confirmation the issue isn’t the fob itself
âś— Cons:
  • May require a trip/appointment
  • Labor charges vary by location

Mobile locksmith service (if you’re stuck)

Cost: $75-$200 (battery/entry help); $250-$600+ if replacing/programming a fob Time: Same day

A locksmith helps you gain entry, confirms the backup start method, and can replace the battery on-site. If the fob is actually failed (not just the battery), they may offer replacement and programming.

âś“ Pros:
  • On-site help if you can’t get in or start
  • Can diagnose battery vs. fob failure
âś— Cons:
  • More expensive than DIY
  • Pricing and capability vary—confirm they service 2024 Ford smart keys

⚠️ What to Avoid

✕ Don’t force the fob case open with a knife or heavy pry tool—this can crack the housing, damage the circuit board, or compromise water resistance.

✕ Don’t assume it’s a dead vehicle battery—try the mechanical key entry and the backup start location first to confirm it’s the fob battery.

✕ Don’t install the battery upside down or mix old/new cells—use one new, name-brand coin cell and ensure correct polarity.

⚠️ 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 Ford Edge if the key fob battery is dead?

Usually, yes. Ford smart keys have a backup RFID/passive function. Unlock with the mechanical key if needed, then hold/place the fob at the vehicle’s designated backup detection spot and press the START/STOP button while holding the brake.

What battery does a 2024 Ford Edge key fob use?

Many Ford smart key fobs use a CR2032 coin-cell battery, but there are variations. Confirm by checking the battery marking inside your fob or referencing the owner’s manual before purchasing.

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

No—replacing the battery does not typically require programming. If the fob still doesn’t work after a new battery, the issue may be a damaged fob, incorrect battery type, poor battery contact, or a vehicle-side issue.

Why does the car say 'No Key Detected' even when the fob is inside?

A weak/dead fob battery is the most common cause. Other possibilities include interference (other electronics), the fob being too far from the backup detection area, or a failing fob. Try the backup start method and replace the battery first.

⏱️ Urgency Note: Moderate urgency: you can often still drive using the backup start method, but replace the fob battery soon to avoid being locked out or stranded at an inconvenient time.

Related Information

Need Detailed Information?

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

View Edge Key Fob Guide →

Last updated: 2026-01-04