Turn off the vehicle and remove the key
Wear gloves and safety glasses
Disconnect the negative battery terminal first
Disconnect the positive battery terminal second
Mix baking soda with water
Apply the solution to the corroded terminals
Scrub the corrosion with a wire brush or battery terminal brush
Wipe away residue with a clean cloth
Rinse lightly with clean water if needed
Dry the terminals completely
Clean the cable clamps the same way
Reconnect the positive terminal first
Reconnect the negative terminal second
Tighten the connections securely
Apply a thin coat of petroleum jelly or terminal protectant
Dispose of cleaning materials properly