how to fix Honda Accord 10th Generation (2018-2022) that won't respond to the key fob

Solution

1. Preparation

• Gather tools and materials: small flathead screwdriver, new key fob battery (typically CR2032), multimeter, and OBD-II scanner.
• Ensure the vehicle is in park and the ignition is off.

2. Replace the Key Fob Battery

1. Use the small flathead screwdriver to gently pry open the key fob casing.
2. Remove the old battery, noting the orientation (+/-).
3. Insert the new battery into the fob, ensuring correct polarity.
4. Reassemble the key fob casing and ensure it clicks securely into place.

3. Check Vehicle Battery

1. Open the hood and locate the vehicle’s battery.
2. Use the multimeter to check the battery voltage; it should read around 12.6 volts or higher.
3. If the voltage is low, jump-start the vehicle or replace the battery if necessary.
4. Inspect battery terminals for corrosion and tighten any loose connections.

4. Inspect and Replace Fuses

1. Locate the fuse box (typically under the dashboard or near the engine bay).
2. Check the fuse for the keyless entry system (refer to the owner’s manual for the specific fuse location).
3. If the fuse is blown, replace it with a new fuse of the same amperage.

5. Reprogram the Key Fob

1. Ensure the vehicle is in the "ON" position without starting the engine.
2. Follow the manufacturer-specific reprogramming procedure (found in the vehicle's service manual).
   • Typically involves pressing the lock and unlock buttons in sequence.
3. Test the key fob after reprogramming to ensure functionality.