why does my Toyota RAV4 XA50 (2019-2024) key fob only work intermittently

Solution

1. Battery Replacement

1. Remove the Key Fob Cover

   • Use a small flathead screwdriver to gently pry open the key fob.
   • Take care to avoid damaging the case.

2. Replace the Battery

   • Remove the old battery (typically a CR2032).
   • Insert a new battery, ensuring the positive side is facing up.

3. Reassemble the Key Fob

   • Align the two halves of the key fob and snap them back together.

2. Inspect and Clean Circuit Board

1. Access the Circuit Board

   • Carefully open the key fob again if closed.

2. Clean the Contacts

   • Use a soft cloth or cotton swab with isopropyl alcohol to clean the battery contacts and circuit board.
   • Allow it to dry completely.

3. Check for Damage

   • Inspect for any visible cracks or corrosion on the circuit board.

3. Reprogram Key Fob (if necessary)

1. Enter Programming Mode

   • Insert the key into the ignition and turn it to the "ON" position (do not start).
   • Turn it back to "OFF" and remove the key.

2. Program the Key Fob

   • Press and hold the "LOCK" button for 5 seconds.
   • Release and press the "LOCK" button again to complete the programming.