Method 1: Manual Reset (Most Ford Models)
Step 1: Sit in the driver's seat and ensure all electrical accessories are turned off.
Step 2: Turn the ignition to the ON position without starting the engine. For push-button start models, press the START/STOP button once without pressing the brake pedal.
Step 3: Within 10 seconds, flash the high beam headlights five times.
Step 4: Immediately press and release the brake pedal three times within the same 10-second period.
Step 5: Watch the battery warning light on the instrument cluster. If the reset is successful, the battery indicator will flash three times, confirming that the Battery Monitoring System has been reset.
Step 6: Turn the ignition off and wait about 30 seconds before starting the engine. The vehicle will begin monitoring the newly installed battery using updated charging parameters.
Method 2: Reset with a Diagnostic Scan Tool
Step 1: Connect a compatible OBD-II diagnostic scan tool to the vehicle's diagnostic port.
Step 2: Turn the ignition to the ON position without starting the engine.
Step 3: Enter the vehicle information and access the Battery Monitoring System or Battery Replacement Registration function.
Step 4: Select BMS Reset or Battery Reset, then follow the on-screen instructions to complete the procedure.
Step 5: After the reset is confirmed, switch the ignition off for approximately 30 seconds, then restart the vehicle to verify the reset has been completed successfully.
Summary: Performing a Ford Battery Monitoring System (BMS) reset after replacing the battery ensures the vehicle recognizes the new battery and applies the correct charging strategy for reliable electrical system performance.