why does my Ford F-150 battery die when the car is off?

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the negative battery terminal using a wrench.
• Wear safety gloves and goggles.

2. Address Parasitic Draw

• Sub-step 1: Reconnect the battery terminal.
• Sub-step 2: Use an ammeter to measure the current draw from the battery. A normal draw is typically below 50 milliamps.
• Sub-step 3: If the draw is excessive, pull fuses one at a time while monitoring the ammeter to identify the circuit causing the draw.

3. Repair Faulty Circuit

• Sub-step 1: Once the faulty circuit is identified, consult the wiring diagram for that circuit to locate the source of the issue.
• Sub-step 2: Repair or replace any damaged wires, connectors, or components associated with the identified circuit.

4. Replace Battery (if needed)

• Sub-step 1: If the battery is found to be weak or unable to hold a charge, replace it with a new battery of the same specifications.
• Sub-step 2: Ensure the new battery is properly installed with secure connections.