Charging an Electric Vehicle 12 Volt Battery

If your Mustang Mach-E^® won't unlock or respond, it may be due to a drained 12-volt (V) battery. Follow the steps below to safely access the vehicle's front compartment, restore power, restart your vehicle, and drive it to the nearest Ford Dealer.

Watch the following videos to learn more about exiting your Mustang Mach-E and charging its 12V battery.

If you are uncomfortable or do not wish to follow these steps, call Ford Roadside Assistance at 1-800-241-3673.

Opening the Frunk

1. Have an external power supply ready, such as:
   • A 12V jump box.
   • Another vehicle with jumper cables.
2. Locate the small door covering on the front, right-hand side bumper, below the headlight.

3. Press firmly on the top-right of the edge, then pull the raised section on the bottom left toward you to take the cover off.

   

4. Pull the two wires out of the opening. The red cable (A) is positive. The black cable (B) is negative.

   
5. Connect the external power supply to both terminals.
   
   Note: Refer to the manufacturer's instructions for external power supply use.
   
   Warning: You must attach the red positive (+) cable to the red positive terminal and the black negative (-) cable to the black negative terminal.
    
6. Turn on the external power supply. If performed correctly, the front luggage compartment latches will immediately release, and you will have access to the front luggage compartment (the “frunk”).
7. Disconnect the external power supply and close the front bumper cover.

With the frunk now open, the next steps are to remove the frunk cover and driver-side cover.

Removing the Frunk Cover

1. Start at the rear edge of the left-hand side. 
2. Pull upward at the clip locations shown to release the clips. This may require the use of extra force.
3. Carefully remove the cover. 

Note: To install, reverse the removal procedure.

Removing the Driver-side Cover

1. Start at the rear edge of the left-hand side and work toward the front of the cover. 
2. Pull upward at the clip locations shown to release the clips. 
3. Carefully remove the cover. 

Note: To install, reverse the removal procedure.

Connecting the Booster/Jumper Cables and Accessing Your Vehicle

1. Connect the positive (+) jumper cable to the positive (+) jump point of the discharged battery vehicle.

   
2. Connect the other end of the positive (+) jumper cable to the positive (+) terminal of the booster vehicle battery.
3. Connect the negative (-) jumper cable to the negative (-) terminal of the booster vehicle battery.

4. Make the final connection of the negative (-) jumper cable to the negative (-) ground point of your Mustang Mach-E, as shown below.

   
5. Unlock the driver's door on your vehicle.

Charging the 12V Battery and Starting Your Vehicle

Follow the steps below to charge your 12V battery and get back on the road.

1. Run the engine of the booster vehicle at a moderately high RPM in Park.
2. Ensure your vehicle is in Park (P).
3. Fully press the brake pedal of your vehicle and press the push-to-start button.
4. Run both vehicles for a minimum of 3 minutes before disconnecting the cables. 
5. Disconnect the cables in reverse order from how they were connected.
   
   Important: Do not switch the headlamps on when disconnecting the cables. The peak voltage could damage the bulbs. 

For additional support, call Ford Roadside Assistance 1-800-241-3673.

Additional Information

Roadside Assistance for Electric Vehicles