25-2058

TECHNICAL SERVICE BULLETIN
12-Volt Battery Drain

25 February
2025

Model:
Ford
2021-2023 Mustang Mach-E
Markets: Canada, USA
Issue: Some of the vehicles listed in the Model statement above may exhibit a 12-volt battery drain. This may be due
to the software level of various modules such as the GWM, APIM and DSM.
Action: For vehicles that meet all of the criteria in the Issue and Model statements, follow the Service Procedure to
reprogram the GWM, APIM and DSM modules.
Parts - Parts To Inspect And Replace Only If Necessary
Service Part
Number

Claim Quantity

BAGM-H3

Only If Necesary (1
Possible)

Package Order Quantity

Number in
Package

Only If Necesary (1
Possible)

1

Description
12-Volt
Battery

Claim Quantity refers to the total number of individual pieces required to repair the vehicle.
Package Order Quantity refers to the amount of the service part number package(s) required to repair the vehicle.
Number In Package refers to the number of individual pieces included in a service part number package.
Only If Necessary indicates the part is not mandatory. Refer to the Service Procedure to determine the
inspection/inclusion criteria.
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty
(SPW)/Service Part New Vehicle (SPNV)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are
not altered by a TSB. NVLW/SPW/SPNV/ESP coverage limits are determined by the identified causal part and
verified using the OASIS part coverage tool.
Labor Times
Operation
No.

Description

Time

2021-2023 Mustang Mach-E: Perform Software Update For GWM, APIM, TCU, IPC And
DSM

252058A

3.2 Hrs.

2021-2023 Mustang Mach-E: Additional Time For Further Updates To GWM, APIM, TCU
“Refer To Warranty & Policy Manual, Section 1.3 For Time Recording Requirements And
Procedures For Actual Time. Ford Monitors Module Reprogramming Vehicle History
Session Data To Compare Against Warranty Claiming Activity” (Can Be Claimed With
Operation A)

AP252058

Actual
Time Up
To 2.0
Hrs.

Repair/Claim Coding
Causal Part:

14C708

Condition Code: 04

Service Procedure
NOTE: The time required to complete this procedure varies depending on several factors including the
number of module software updates required, available internet bandwidth, USB flash drive variability, and
the potential that CAN flashing (software update via the DLC with FDRS) may be required. Connect to the

internet with an ethernet cable, use a USB 3.2 Gen 2 or higher flash drive. When performing USB software
updates, using high speed USB ports on the laptop is recommended for faster file transfer.
1. Start an FDRS session and navigate to Toolbox tab > Datalogger > body control module (BCM) and select the
BATT_SOC PID. Verify the PID reads 50% or higher.
NOTE: Connecting the battery charger negative clamp directly to the battery negative terminal might result in
the SOC PID not immediately reflecting the improvement from charging.
(1). If SOC is less than 50%, charge the battery by attaching the battery charger's negative clamp to the engine or
chassis ground and not the negative battery terminal. Refer to WSM, Section 414-01.
(2). If the battery is unable to achieve a 50% SOC, use the Rotunda GRX-3590 or DCA-8000 testers to verify if
replacement is required.
• If the battery does not need to be replaced, disconnect the Rotunda charger and perform a BMS reset using
the FDRS scan tool.
• If the battery is replaced, fully charge the new battery, disconnect the Rotunda charger and perform a BMS
reset using the FDRS scan tool.
2. Reconnect the battery charger and set it to maintain a vehicle voltage of 12.6-13.6 volts. A low battery SOC while
performing a software update to any module may result in a repeat "Restart Required" message in the vehicle's
center display screen or a message on the FDRS saying "Part Number Validation Failed" or "DID Validation
Failed".
3. Is there a software update available for any of the following modules?
GWM
APIM
TCU
(1). Yes - proceed to Step 4.
(2). No - this article does not apply.
4. Prepare to update the software for the GWM, APIM, and TCU.
(1). A 64GB or larger USB flash drive is required for GWM, APIM, and TCU software updates. USB2 Gen 2 or
higher is recommended for faster file transfer on both the computer port and the USB drive.
(2). Make sure the USB flash drive being used is formatted correctly. To see the available drives, hold down the
Windows icon keyboard key and press the E keyboard key. Right click on the USB flash drive and select
Properties. If File System under the General tab is not exFAT, the drive must be formatted.
(3). To format the USB flash drive:
• Right click on the USB flash drive.
• Select Format, select exFAT for the File System.
• Select Default Allocation Size for the Allocation Unit Size.
(4). De-selecting Quick Format is not necessary and results in a lengthier operation.
5. Using the FDRS, begin module programming by selecting the "SW Updates" tab. Follow all on-screen instructions
carefully.
6. When prompted, connect the USB flash drive to the FDRS.
7. When prompted by the FDRS, safely remove/eject the USB flash drive from the FDRS. Start the vehicle ( KOER)
then connect the USB flash drive to the USB media hub to install the software into the module. When the USB
software update begins, the center display screen displays a message stating "Do Not Remove USB". The update
may take 10 minutes or longer to complete.
NOTE: It may take up to 5 minutes for the vehicle to recognize the USB flash drive with software update.
8. When the vehicle's center display screen prompts to restart the vehicle:
(1). Turn the vehicle OFF.
(2). Wait 10 minutes.
(3). Restart the vehicle (KOER). The update is still in process at this time.
9. Follow FDRS on-screen prompts to complete the update.

NOTE: It may take up to 5 minutes before "Update Successful" appears in the vehicle's center display
screen. After 5 minutes if "Update Successful" pop-up is not shown on the center display screen, remove the
USB flash drive and select YES on the FDRS prompt stating "Was The USB Update Successful" ( FDRS
verifies if the module software update was successfully installed on the module).
10. Perform the software update for the GWM. Follow all update screens. If there is no GWM software update
available, proceed to Step 11.
(1). Follow the center display screen prompts.
(2). Follow FDRS prompts to complete the GWM programming.
• Once the pop up stating "Update Successful" appears in the center display screen, select Close, remove the
USB flash drive from the USB media hub, and select Yes on FDRS indicating the update installed successfully.
This initiates the remaining automated configuration steps and reports the module software part numbers and
application software levels to the Ford online database. Failure to follow this step results in an inaccurate
database as well as omitted, improperly installed, or improperly configured applications (features) such as
navigation (if equipped). It is normal for the module to reset during this step.
(3). Proceed to Step 11.
11. Perform the software update for the APIM. Follow all update screens. If there is no APIM software update
available, proceed to Step 12.
(1). Follow the center display screen prompts.
(2). Follow FDRS prompts to complete the APIM programming.
• Once the pop up stating "Update Successful" appears in the center display screen, select Close, remove the
USB flash drive from the USB media hub, and select Yes on FDRS indicating the update installed successfully.
This initiates the remaining automated configuration steps and reports the module software part numbers and
application software levels to the Ford online database. Failure to follow this step results in an inaccurate
database as well as omitted, improperly installed, or improperly configured applications (features) such as
navigation (if equipped). It is normal for the module to reset during this step.
(3). Proceed to Step 12.
12. Perform the software update for the TCU. Follow all update screens. If there is no TCU software update available,
proceed to Step 13.
(1). Follow the center display screen prompts.
(2). Follow FDRS prompts to complete the TCU programming.
• Once the pop up stating "Update Successful" appears in the center display screen, select Close, remove the
USB flash drive from the USB media hub, and select Yes on FDRS indicating the update installed successfully.
This initiates the remaining automated configuration steps and reports the module software part numbers and
application software levels to the Ford online database. Failure to follow this step results in an inaccurate
database as well as omitted, improperly installed, or improperly configured applications (features) such as
navigation (if equipped). It is normal for the module to reset during this step.
(3). Proceed to Step 13.
13. For 2021 vehicles only, perform the software update for the IPC. Follow all update screens. If there is no IPC
software update available, proceed to Step 14.
(1). Follow the center display screen prompts.
(2). Follow FDRS prompts to complete the IPC programming.
• Once the pop up stating "Update Successful" appears in the center display screen, select Close, remove the
USB flash drive from the USB media hub, and select Yes on FDRS indicating the update installed successfully.
This initiates the remaining automated configuration steps and reports the module software part numbers and
application software levels to the Ford online database. Failure to follow this step results in an inaccurate
database as well as omitted, improperly installed, or improperly configured applications (features) such as
navigation (if equipped). It is normal for the module to reset during this step.
14. Perform a network test using the FDRS scan tool.
(1). Click on the envelope icon.
(2). Select "Refresh FDRS Files" (this will close FDRS when completed)
(3). Launch FDRS.
(4). Start new FDRS session.

15. Are there any updates available for the GWM, APIM, TCU, and/or IPC?
(1). Yes - proceed to Step 10.
(2). No - proceed to Step 16.
16. Reprogram the DSM using the latest software level of the FDRS scan tool.

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All rights reserved.
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and
equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information
that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition
described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy
and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article.
The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede
this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.