Mach-Lee

Well-Known Member
First Name
Lee
Joined
Jul 16, 2021
Threads
55
Messages
1,863
Reaction score
3,119
Location
Wisconsin
Vehicles
2022 Mach-E Premium AWD
Occupation
Sci/Eng
Country flag
This is a big one, a dedicated TSB for HVBJB replacement. First of all, I'm glad Ford released this TSB to consolidate the information in the service manual, and make it easier for dealers to properly repair vehicles with HVBJB issues. We were seeing some confusion over the proper response to certain DTCs and correct part numbers, this TSB should clarify that moving forward. This also adds the requirement to update the powertrain software to latest, which was skipped in some repairs.

TECHNICAL SERVICE BULLETIN
Illuminated MIL And/Or Stop Safely Now Message, Low Or Discharged 12V Battery And/Or Various DTCs - Built On Or Before 28-May-2022
22-2178
01 August 2022​
Model:
Ford
2021-2022 Mustang Mach-E
Built on or before 28-May-2022

Issue: Some 2021-2022 Mustang Mach-E vehicles built on or before 28-May-2022 may exhibit an illuminated malfunction indicator lamp (MIL) and/or display a Stop Safely Now message in the instrument panel cluster (IPC) with diagnostic trouble codes (DTCs) P0563, P0ADA, P0ADE, P0AA1, P0AA4, P0AA5, P0AA2, P0D10, P0D0F, and/or P0C78 stored in battery energy control module (BECM) or a low/discharged 12V battery with P0DA8 and/or P1A10 in the secondary onboard diagnostic module-C (SOBDMC). This may be due to the high voltage battery junction box (HVBJB). To correct the condition, follow the Service Procedure to replace the HVBJB and reprogram the BECM.

Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
• 2021-2022 Mustang Mach-E
• Built on or before 28-May-2022
• At least one of the following:
- DTCs P0563, P0ADA, P0ADE, P0AA1, P0AA4, P0AA5, P0AA2, P0D10, P0D0F, and/or P0C78 in the BECM
- A low/discharged 12V battery with a P0DA8 and/or P1A10 in the SOBDMC
Parts
Service Part NumberQuantityDescriptionUnit of IssuePiece Quantity
LK9Z-10C666-A​
1​
High Voltage Battery Junction Box (GT)
1​
1​
NK4Z-10C666-C​
1​
High Voltage Battery Junction Box (Base)
1​
1​
NK4Z-10C666-D​
1​
High Voltage Battery Junction Box (Extended Range)
1​
1​
W717859-S439​
1​
Battery Mounting Bracket Bolts
4​
2​
VC-13-G​
As Needed​
Motorcraft® Yellow Concentrated Antifreeze/Coolant (All Markets Except Canada)
CVC-13-G​
As Needed​
Motorcraft® Yellow Concentrated Antifreeze/Coolant (Canada Only)
Quantity refers to the amount of the service part number required to repair the vehicle.
Unit of Issue refers to the number of individual pieces included in a service part number package.
Piece Quantity refers to the total number of individual pieces required to repair the vehicle.
As Needed indicates the amount of the part may vary and/or is not a whole number. Parts can be billed out as non-whole numbers, including less than 1.

Parts
Parts To Inspect And Replace Only If Necessary
Service Part NumberQuantityDescriptionUnit of Issue
LJ9Z-10A687-A​
If Needed​
High Voltage Battery Cover Seal
1​
If Needed indicates the part is not mandatory.

Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Emissions Warranty/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/Emissions Warranty/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
Labor Times
DescriptionOperation No.Time
2021-2022 Mustang Mach-E: Retrieve DTCs And Vehicle Build Date, Replace The HVBJB (Do Not Use With Any Operations Outside Of This Article)
222178A​
5.7 Hrs.​
2021-2022 Mustang Mach-E Reprogram The Appropriate Modules As Required By The Software Update And Service Procedure (Can Be Claimed With Operation A)
MT222178​
Actual Time​
Repair/Claim Coding
Causal Part:10C666
Condition Code:42

Service Procedure
1.
Replace the HVBJB. Refer to Workshop Manual (WSM), Section 414-03A, Removal and installation.

2. Reprogram the BECM to latest software available. The BECM is part of the powertrain coordinated flash.
(1). Connect a battery charger to the 12-volt battery.
NOTE: To prevent the battery saver mode from activating on the vehicle, verify that the negative cable of the charger is installed on a chassis or engine ground, and not the 12-volt battery negative terminal. Do not plug the vehicle into the high voltage battery charger during programming, this can cause modules to not program correctly. Only use the 12-volt battery charger during programming.

3.
Reprogram the PCM using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool.

4. Check the availability of software updates on the following modules and update as required:
  • Secondary on-board diagnostic control module (SOBDM)
  • Battery energy control module (BECM)
  • Secondary on-board diagnostic control module B (SOBDMB)
  • Secondary on-board diagnostic control module C (SOBDMC)
  • Anti-lock brake system (ABS) module
  • NOTE: Only one module may be updated at a time.

 

Attachments

Last edited:

DevSecOps

Well-Known Member
First Name
Todd
Joined
Sep 22, 2021
Threads
45
Messages
2,512
Reaction score
6,407
Location
Sacramento, CA
Vehicles
2021 Audi SQ5 / 2021 Mach-E GTPE
Occupation
IT Infastructure Security / Software Development
Country flag
This should hopefully put to rest all the people blaming the LVB for failure when it's coupled with HVBJB failure.

Repeatedly throughout the last couple months I've been attempting to squash those falsities. There's nothing wrong with the LVB other than it wasn't maintained because the HVB was disabled due to HVBJB failure. Therefore, it can't be charged via EVSE charging or DC/DC and eventually causes multiple DTCs due to low voltage. It's a symptom, not a cause.

There's been a lot of confusion around part numbers and I've removed them completely from my mega thread. I don't think we need to concern ourselves with the part numbers. The old parts have been purged from Ford inventory so no matter what part number is ordered the dealership will receive the newest, revised, beefier version automatically. When they order by your VIN, you'll get the correct version. The system won't allow for ordering the wrong one.
 
Last edited:

P. T. Magoo

Well-Known Member
First Name
John
Joined
Dec 29, 2021
Threads
3
Messages
270
Reaction score
368
Location
Petersburg, MI
Vehicles
'15 Volt, '22 MME Ca Rt-1
Occupation
Physical Therapist, Freelance Trombonist
Thanks so much for posting this!

Okay so I have a few questions:

* Should I stop connecting my 12-volt battery overnight to my Battery MINDer? I've been in the habit of doing this to address any sulfating from transit. I fully understand the car should maintain its own 12 volt battery.

* I own a code reader. Should I periodically hook that into the car and see if any codes are appearing, given that there's been no performance problems or dashboard lights lighting up?

* The above states:
Do not plug the vehicle into the high voltage battery charger during programming, this can cause modules to not program correctly. Only use the 12-volt battery charger during programming.
Given this statement for shop procedure, should I be disconnecting the EVSE charger after charge is complete on the nights I've allotted for OTA updates? I've yet to receive a single update including the recall update.

Thanks again!
 

JryErok

Member
Joined
Feb 12, 2022
Threads
0
Messages
12
Reaction score
8
Location
Poland
Vehicles
MME SR RWD Lucid Red
What if my HVBJB fails after the warranty period? Will I have to pay for the replacement even though Ford has admitted to having a design flaw?
 

tannerk89

Well-Known Member
First Name
Tanner
Joined
Oct 31, 2021
Threads
6
Messages
290
Reaction score
398
Location
Roanoke, VA
Vehicles
Mach-E P4X
Occupation
Project Manager
Country flag
What if my HVBJB fails after the warranty period? Will I have to pay for the replacement even though Ford has admitted to having a design flaw?
It’s covered under the 8yr 100,000 mile powertrain warranty, outside of that mileage I doubt it would be covered.
 


KevinS

Well-Known Member
Joined
Oct 11, 2021
Threads
18
Messages
743
Reaction score
1,410
Location
Maryland
Vehicles
2021 MACH-E (SR AWD)
Country flag
I'm a little surprised there are 3 variations of the HVBJB.

I would have thought it most efferent to create 1 replacement part that covered all models. Might be overkill on the Select if designed for the GT, but given what the part costs, it's gotta be offset by the simplicity of keeping a single item in inventory.

This must be why I'm not in charge of anything big.
 

mkhuffman

Well-Known Member
First Name
Mike
Joined
Nov 19, 2020
Threads
12
Messages
2,475
Reaction score
3,087
Location
Virginia
Vehicles
2021 MME GT, Cadillac XT5, VW Jetta
Country flag
I'm a little surprised there are 3 variations of the HVBJB.

I would have thought it most efferent to create 1 replacement part that covered all models. Might be overkill on the Select if designed for the GT, but given what the part costs, it's gotta be offset by the simplicity of keeping a single item in inventory.

This must be why I'm not in charge of anything big.
Someone else posted a theory that maybe the parts are not actually new, but just fully tested to determine if they could fail. Maybe there are parameters they are testing them for, and the ones that can handle more current are slated for the GT, while other limits are used for models that pull less current.

It is not uncommon for this type of solution to be used when part variances are found and can be measured. I worked as a engineer in a manufacturing plant years ago and can confirm it is a reasonable approach when a defect is found.

This would involve testing all parts in current inventory, and segregating them based on the test results. It would significantly reduce waste to only throw away the parts that fail the test and can't be used in any model MME. Based on testing, each part would be assigned a unique part number so it can only be used in the model with operating requirements that it can meet.

That approach is usually a temporary solution until they can resolve the root cause of the problem and the new part is fully available and confirmed to be working. My guess is they will eventually have the same part for all models, unless there is a significant cost difference between them. There might be. The beefier contractors could cost a lot more, and why drive up the cost of the Select model unnecessarily?
 
OP
OP
Mach-Lee

Mach-Lee

Well-Known Member
First Name
Lee
Joined
Jul 16, 2021
Threads
55
Messages
1,863
Reaction score
3,119
Location
Wisconsin
Vehicles
2022 Mach-E Premium AWD
Occupation
Sci/Eng
Country flag
Okay so I have a few questions:

* Should I stop connecting my 12-volt battery overnight to my Battery MINDer? I've been in the habit of doing this to address any sulfating from transit. I fully understand the car should maintain its own 12 volt battery.

* I own a code reader. Should I periodically hook that into the car and see if any codes are appearing, given that there's been no performance problems or dashboard lights lighting up?

* The above states:

Given this statement for shop procedure, should I be disconnecting the EVSE charger after charge is complete on the nights I've allotted for OTA updates? I've yet to receive a single update including the recall update.

Thanks again!
The BatteryMINDER would take care of the sulfation in a couple days. You don't need to do that for more than about 48 hours (or 5 nights).

If these codes are set, you will see yellow or red warning lights and messages in the cluster. If you don't see error messages, you don't have to bother checking. I wouldn't worry about it.

Staying connected to a L2 charger shouldn't affect OTA updates, no need to unplug. It's different when you are manually programming the car in the shop with FDRS, then you have to have L2 unplugged.

I would have thought it most efferent to create 1 replacement part that covered all models. Might be overkill on the Select if designed for the GT, but given what the part costs, it's gotta be offset by the simplicity of keeping a single item in inventory.
My guess is they have different fusing for the motors. The GT front motor will draw way more current than the AWD front motor so they have to have different fuses, and maybe some other differences (connectors, etc).
 

Gimme_my_MME

Well-Known Member
Joined
Oct 12, 2020
Threads
8
Messages
1,247
Reaction score
3,858
Location
Dearborn
Vehicles
Grabber Blue First Edition Mustang Mach-E
Occupation
Engineer
Country flag
I know there's lots of confusion and questions around part numbers.

ALL OLD PARTS HAVE BEEN REMOVED FROM THE SYSTEM.

If a dealer orders the old part number it will get changed to the correct ones.
 
Last edited:

Shayne

Well-Known Member
Joined
Aug 9, 2020
Threads
11
Messages
1,974
Reaction score
1,781
Location
Northern Ontario Canada
Vehicles
2021 MME4x Prem
Occupation
Retired
Country flag
If we had our HVJB replaced before this was issued should the software updates that may not have been done be done? This is what it says on the invoice in April 2022 (problem noted February 2021 and December 2021).

COMPLAINT: VEHICLES 12 VOLT BATTERY KEEPS GOING DEAD IN COLD TEMPS. CUSTOMER HAS HAD TO LEAVE A CHARGER ON.
CORRECTION: INSPECT AND VERIFY CUSTOMER COMPLAINT WHERE THE 12 V BATTERY LOSES CHARGE. CONTACTED HOTLINE. RECOMMENDED REPLACING HIGH VOLTAGE BATTERY JUNCTION BOX AND BECM DUE TO DTC P0AA2. REMOVE HIGH VOLTAGE BATTERY AND REPLACE THE JUNCTION BOX AND THE BECM. PERFORM PMI ON BECM AND CLEAR DTCS. RECHECK. ALL OKAY

I note that there are pcm sobdmb and sobdmc updates available for my vehicle. Should I look into getting these done? Does it matter? I have the original rev HVJB installed again I think?
 

generaltso

Well-Known Member
Joined
Jun 24, 2020
Threads
54
Messages
9,031
Reaction score
15,492
Location
Vermont
Vehicles
2021 MME Premium AWD SR Infinite Blue
Country flag
My guess is they have different fusing for the motors. The GT front motor will draw way more current than the AWD front motor so they have to have different fuses, and maybe some other differences (connectors, etc).
It's interesting that the non-GT part numbers are differentiated by whether it's a standard or extended range battery, and not whether it's RWD or AWD.
 

COACH CHRIS

Well-Known Member
First Name
C
Joined
Aug 12, 2021
Threads
11
Messages
121
Reaction score
162
Location
NJ
Vehicles
Mustang Mach-E AWD Select
Country flag
I have a bit of a roadtrip coming up at the end of the month and I'll keep this TSB number bookmarked should anything happen. Hopefully the added clarity and formality makes this a straightforward fix, assuming parts availability etc. (FWIW, the recall has been applied so I'm not terribly worried of being straight up stranded.)
 

Ccarbs

Active Member
Joined
Nov 12, 2021
Threads
0
Messages
26
Reaction score
12
Location
AZ
Vehicles
Mach E CA Rte 1 AWD (2022)
Country flag
Anyone else notice that this has a different build date than the recall/stop sale? Mine was "produced" on May 27 which was after the stop sale but still fits within this TSB.
 

jbooth

Well-Known Member
First Name
Jonathan
Joined
Sep 6, 2021
Threads
3
Messages
64
Reaction score
59
Location
Illinois
Vehicles
Honda Fit, Mustang Mach-E
Occupation
Software Engineer
Country flag
Do any of those DTCs match the "electrical system drain" message with no 3rd party apps/no accessories?

I guess the real answer here is I should go setup the recently arrived odblink and see what code we have from it, but wife just took the pony to work so I'll have to wait til tonight.
 

Regularmache

Well-Known Member
First Name
Stephen
Joined
Nov 16, 2019
Threads
15
Messages
934
Reaction score
1,262
Location
US
Vehicles
18 F150 Platinum, 18 Mustang GT PP2, 14 QX80
Occupation
Purchasing
Country flag
It’s covered under the 8yr 100,000 mile powertrain warranty, outside of that mileage I doubt it would be covered.
I've had good luck as the "original owner" when something recalled failed eventually and I was outside the Warranty period, getting some manufacturers assistance with the repair.
I'm not entitled to it, it's not owed me but with both Toyota and Ford they both reviewed the request and provided "Some good Will" assistance.

Please don't read into this, completely up to the manufactures and I was Greatful for not expecting of their help.

 

 
Top