my Toyota Corolla E170 (2013-2019) key fob isn't working, how can I fix it

Solution

1. Preparation

• Gather the necessary tools: a small flathead screwdriver, a CR2032 battery (or specific battery type for your fob), and a multimeter.
• Ensure you are in a well-lit area to avoid losing small components.

2. Replace Key Fob Battery

1. Open the Key Fob:

   • Use the small flathead screwdriver to gently pry open the key fob casing.
   • Take care to avoid damaging the clips holding the casing together.

2. Remove Old Battery:

   • Note the orientation of the old battery before removing it.
   • Use the screwdriver to gently push the battery out of its compartment.

3. Install New Battery:

   • Insert the new CR2032 battery (or the correct type) in the same orientation as the old one.
   • Ensure it is seated properly in the compartment.

4. Reassemble Key Fob:

   • Align the two halves of the fob and press them together until they click into place.

3. Reprogram Key Fob

1. Enter Programming Mode:

   • Insert the key into the ignition and turn it to the "ON" position without starting the engine.
   • Turn the key back to "OFF" and remove it from the ignition. Repeat this step five times within 10 seconds.
   • The locks should cycle, indicating the vehicle is in programming mode.

2. Program the Key Fob:

   • Press any button on the key fob to program it. The locks should cycle again to confirm successful programming.

3. Exit Programming Mode:

   • Turn the ignition back to the "ON" position to exit programming mode.