How to Change a Battery in Ford Cars

by Contributing Writer; Updated June 12, 2017

If the battery in your Ford car is no longer holding a charge or is struggling to start the truck on cold mornings, it may be time Ford car a new battery. Many batteries are maintenance-free and while they can be charged, you really can't do much more than replace them if they start to fail. Most auto parts store have a good array of batteries on hand, and many of these stores can test your old battery to determine if the battery is the problem or something else in your charging system is to blame.

Under The Hood:

 How to Change a Battery in a Ford Ranger Keyless Entry

Work the edge of a quarter into the seam at the top of the keyless entry transmitter, near the key ring. Twist the quarter back and forth to pry apart the two halves of the transmitter.

Pry the old transmitter battery from the battery compartment with a pair of plastic, needle-nose tweezers. Dispose of the battery in your household garbage or recycle it if the appropriate facilities are available.

Place a new, three-volt CR2032 lithium battery into the transmitter's battery compartment, and orient the battery as directed on the inside of the transmitter. Press down on the battery with the tip of your finger to ensure that it is properly seated. Take care to avoid touching your finger to the battery terminals.

Line up the two halves of your Ford Ranger keyless entry transmitter. Apply pressure to both halves of the transmitter to cause them to snap back together.

Items you will need

  • Quarter

  • Plastic needle-nose tweezers

  • CR2032 battery

 How to Change the Battery in a Ford Expedition

Locate the battery under the hood of your Expedition. There is a plastic cover on top of the battery to protect and isolate the battery terminals. Lift the plastic cover off the battery and set is aside.

Loosen the retaining bolts on the battery cable connectors with a wrench. Remove the cables from the battery, starting with the negative cable. Remove the positive cable next and lay both cables aside and away from the battery.

Remove the bolt on the battery. Hold down clamp with a socket and ratchet. Lift the battery out of the truck and carefully set it aside in a safe place. Make sure it stays upright so no acid spills out.

Lower the new battery into the engine compartment, and set it on the battery tray. Install the hold down clamp and secure it with the retaining bolt. Tighten the bolt with a socket and ratchet.

Install the positive battery cable on the positive terminal, then attach the negative cable to the negative terminal. Tighten the retaining bolts on both cables with a wrench.

Items you will need

  • Wrench set

  • Socket set

 How to Change a Battery in a Ford Ranger

Open the hood and locate the battery. Disconnect the black, or negative, terminal from the battery using an open-end wrench and place the terminal to the side. Repeat the process with the red, or positive, terminal on the other side.

Unbolt the battery tie-down from the battery tray using a 3/8-inch ratchet and socket. Lift the battery up and out of the battery tray and set it to the side. The battery can be recycled at an auto parts store.

Lift the replacement battery into the battery tray so that the terminals are oriented the same way as the original battery. Reinstall the tie down to the tray using a 3/8-inch ratchet and socket.

Install the positive terminal on the battery using an open-end wrench, and then repeat the process for the negative terminal. Start the truck and allow it to run for 10 minutes to ensure that the battery is working properly.

Items you will need

  • Open-end wrench set

  • 3/8-inch ratchet and socket set

 How to Replace the Battery in a Ford Focus

Turn off all accessories and turn off the ignition before you open the hood. Install the memory-saver.

Find the end of the negative battery cable connected with a nut to the side of the driver-side strut tower. Remove the nut and wrap the metal terminal on the cable with electrical tape so no metal is exposed.

Disconnect the mass air flow wiring connector at the air cleaner box. Loosen the hose clamp for the clean air duct. Lift and disengage the tab on the fresh air intake duct. Grasp and lift the rear of the air cleaner box to disengage the retainer tabs, then slide the box rearward and up to remove it from the front locating pin. Remove the air cleaner box.

Lift up the front edge of the battery cover and slide it forward to disengage the locating tab on the rear of the cover. Remove the cover. Press in two tabs -- one on each side -- on the top of the front panel on the battery box and slide the panel up. Remove the panel from the battery box.

Remove two nuts on the battery hold-down bar across the top of the battery and remove the hold-down bar. Loosen the pinch nut on the positive battery terminal and remove the terminal. Slide the battery forward until the bottom lip on the battery case clears the battery box, then remove the battery from the engine compartment. Loosen the negative terminal pinch nut and remove the negative battery cable.

Clean the positive and negative cable terminals, using the post and terminal brush. Install the negative terminal on the negative battery post and tighten it to 44 inch-pounds.

Lower the battery into the engine compartment and engage the lip on the bottom of the battery case with the groove in the bottom of the battery box. Slide the battery into the battery box. Install the battery hold-down bar and tighten the nuts to 71 inch-pounds. Install the positive terminal on the positive battery post and tighten it to 44 inch-pounds.

Engage the notch on the front of the air cleaner box with the locating pin and then press down on the box to engage the rear retainer tabs. Connect the MAF connector. Engage the retainer tab on the fresh air intake duct. Tighten the hose clamp on the clean air duct and tighten it to 27 inch-pounds.

Fit the locating tab on the rear of the battery cover into the slot, then press down on the cover to snap it in place. Remove the tape from the terminal on the negative battery cable. Install the cable end and tighten the nut to 16 foot-pounds. Remove the memory-saver.

Items you will need

  • Memory-saver

  • Socket set

  • Ratchet

  • Electrical tape

  • Battery post and terminal cleaner

  • Inch-pound torque wrench

 How to Replace a Battery on a Ford F350

Open the hood of the F-350 and loosen the screws on the securing clamps on the battery using the screwdriver. Pull the wires off of the battery's connectors.

Remove the screws that are securing the battery to the frame of the engine compartment using the screwdriver. The screws will be located in each corner at the bottom of the battery.

Pull the battery off the frame of the engine compartment. Place the new battery into the engine compartment. Replace and tighten the securing screws. Replace the wires to the battery the opposite way that you removed them.

Items you will need

  • Screwdriver

 How to Replace the Battery in a Ford Freestar

Open the Freestar's hood and disconnect the battery from the cables by loosening the securing screws with the screwdriver. The battery is at the front of the engine compartment on the driver's side, in front of the air filter.

Remove the securing mount nut and bolt at the bottom of the battery housing with the screwdriver and ratchet set. The battery mount is on the back side of the battery, under the air filter tube.

Pull the old battery out of the housing and set it aside.

Place the new battery into the housing and replace the securing mount. Make sure that the battery's positive (+) connector is on the driver's side of the engine housing. Replace the securing nut and bolt and tighten.

Connect the battery cables to the new battery and tighten the securing screws. Close the Freestar's hood.

Items you will need

  • Screwdriver

  • Ratchet set

  • New battery

 How to Replace the Battery in a Ford E-350

Replacing the Battery

Turn off your vehicle and pop open the hood to expose the engine. The battery is fairly easy to locate. If you are facing the engine of the E-350, the battery will be located on your left-hand side.

Locate the two battery cables. One will go to a red terminal and the other to a black. The red denotes the positive terminal, and the black is the ground terminal.

Loosen the bolts that hold the cables to the terminals. Use your adjustable wrench to accomplish this. Be sure to loosen the negative (black) terminal first and disconnect the cable as this will prevent any sparking. Remove the positive (red) cable second.

Remove the battery. Batteries will weigh around 40 to 50 pounds, so be careful not to damage yourself or your vehicle. Wear gloves if there is noticeable acid leakage, as the battery acid can burn your skin. Bring the battery to the nearest auto parts dealership; they can properly recycle it.

Clean the terminals. Using your wire brush polish the terminals to guarantee a good electrical connection. If there is acid residue, you may clean this using a baking soda and water mixture.

Install the new battery. Again, batteries are heavy so be sure to not injure yourself or damage the car.

Connect the terminals. Remember to connect the negative (black) cable first and positive (red) second. Apply battery grease to the terminals to prevent future corrosion. Once this is complete you may test to make sure it works by starting your car.

Items you will need

  • Replacement battery

  • Wire brush

  • Baking soda

  • Adjustable wrench

  • Electrical tape

  • Gloves

  • Battery grease

 How to Replace the Battery in an F-250 Diesel

Open the hood of the truck and locate the battery.

Detach the negative battery cable.

Detach the positive battery cable.

Locate a wedge on the side of the F-250's battery. It's secured to the battery tray by a bolt. Remove the bolt and lift out the wedge.

Lift the old battery out of the F-250's engine compartment. Since it's heavy, you might need assistance.

Place the new battery onto the F-250's battery tray. Replace the wedge and the bolt that will secure it.

Reattach the battery cables. Start with the positive cable and then the negative cable.

Items you will need

  • Socket wrench

  • Socket set