CSP-23B70 Certain 2022-23 F-150 Lightnings - BMS Sensor Replacement

[Maquis]

Interesting note: At one point after the sensor replacement, my truck sat for a week without being driven. I checked the 12V SoC and it was at 48%. I drove it the next day for 6 miles (about 15 minutes) and checked again. It showed 93%. Either it can recharge really fast, or there’s a problem in how the numbers get reported on Ford”s website.

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[TaxmanHog]

Interesting note: At one point after the sensor replacement, my truck sat for a week without being driven. I checked the 12V SoC and it was at 48%. I drove it the next day for 6 miles (about 15 minutes) and checked again. It showed 93%. Either it can recharge really fast, or there’s a problem in how the numbers get reported on Ford”s website.

My routine is
Do a pulldown refresh on the vehicle status on the Fordpass app, wait a minute....
Log onto Ford.com, check my account status screens, it'll have the current data for the refresh.

 

[VTRedWingsFan]

Completed yesterday via mobile service. Van met me in my office parking lot, very positive experience. Talking with tech, the dealership's biggest challenge is staffing it. As of a few minutes ago the CSP has not cleared, but I am not shocked.

 

[invertedspear]

My dealership called me yesterday and said they're launching their mobile service and want to use it to complete my 23B70 as well as the 23B57 that they should have done before letting me buy the truck. Put me on the schedule for next week and ordered the BMS. First good experience I've had with this service department so far.

 

[techmatters]

I haven't gotten this BMS recall completed yet, it's the last recall/CSP I'm waiting on with the part being on backorder. I have home assistant and the fordpass integration and was trying to correlate battery voltage with battery percentage as reported by fordpass which lead to this curious discovery. I'm interested to see if this pattern stays consistent when I get the new BMS sensor. Whenever I plug the truck in (FCSP), it seems fairly consistent to maintain the LVB around 12.88V which in turn gives a high % reported. When the truck is just sitting, unplugged, and in this case in cold weather, the battery voltage drops pretty quickly and also reflects a drop in % reported from fordpass. Interestingly, while driving, the voltage goes up around 15V and the percentage yet again goes down. So to me looking at this data, the percentage will actually decrease when deviating from 12.88V in either direction, albeit less detrimental to the reported percentage when over 12.88V. Of course there may be more math being done behind the scene that we can't actually see, but just looking historically over the last month or so, this is a very consistent pattern I'm seeing.

Just to note: I have had no failures to install any OTA that I've received, they've all gone through with no issues (knock on wood). So the particular data I've screenshot I would call a healthy example of a good battery..?

 

[Stang68]

Just had it done via mobile service. Great experience.

 

[pkirby11]

Hello, I stalk the forums and don't usually have anything to post. However I decided to replace this part my self as my dealer is rather new and unsure of EV's and was making me jump through hoops to get the part. I decided to order it and replace it and long story short I ended up with two of the sensors. I ordered from one site and it they told me it was out of stock so I ordered from another site and ended up with both parts. If anyone is interested in doing it themselves in the US I would be willing to send the part their way for free. They cost like $20 and just not worth trying to put it online or even mess with returning it. Send me a PM if you are interested in the part.

 

[duncanmaio]

I decided to order it and replace it and long story short I ended up with two of the sensors.

I think I am in the same boat, but my second part hasn't arrived yet. Happy to pass it along to anyone who is interested. One wiring connector and two 10mm bolts, and then you have to close the frunk by hand. That's all there is to it.

PM if interested.

 

[Frankhpns]

Who's affected: Lightnings produced from 14 Oct '21 thru 19 Oct '22 and '23 models produced 10 June '22 thru - -

Why is this happening: "The Battery Monitor Sensor (BMS) may randomly under report the actual 12V battery capacity during an over-the-air (OTA) software update, which means that customers might be unable to complete OTA software updates on their vehicles." Which probably has happened to most of us.

What am I looking for: BMS Sensor with either a part number of NL3T-10C652-AC or NL3T-10C652-AD.

I have the -AC version on my truck:

Contact your service advisor and reference CSP program number 23B70. They will need to see the truck to verify the part number you have now before ordering the replacement.
I've attached the relevant docs for you to reference and review.
You have until 5 Jan '25 to get this done.

I have an appointment 02/14/2024 for the replacement that is in stock. Are there any additional software updates that should be done in addition to the regular OTA updates that anyone knows about?

 

[GDN]

Had the sensor replaced this morning by mobile service. Total time under the hood was about 4 minutes. As normal had to close the hood manually and then he checked all of the windows - all operated normally.

I forgot to check my 12v SOC and the part number prior, however the new one is the same part number as others, manufactured in October '23, same SW version 6.10.

The interesting part - I checked the 12v battery on ford.com after the install - it showed 1 %. I decided I should go check the truck. Just as it did during our very cold spell when I opened the door I had no response of any kind. No dings, no graphics on either screen. Pressing the brake and the start button did bring it to life though. I drove it around the block and when I turned it off I got the "System off to save battery" message.

A couple of checks since then and the 12v showed the 1 %, then 22 %, then 48% and now 50%, but it seems to have stopped there, at 50% for about 30 minutes. So it did charge

Curious though, after replacement how does the sensor and the truck truly determine the SOC of the 12v and determine how much to charge?

I'll give it another drive in an hour or so and see if there are further changes.

8:53 AM

9:45 AM

10:17 AM

 

[BSull]

Same here TaxmanHog. I did it myself before a 960 miles trip from Arizona to California and back; I didn't want LVB charging issues.

Where did you get the module. Larry Miller in Mesa has had one ordered for my truck for over a month. I'm ready to buy and install myself.

 

[JL13]

Where did you get the module. Larry Miller in Mesa has had one ordered for my truck for over a month. I'm ready to buy and install myself.

Earnhardt Ford from Chandler had checked for me and told me that the Lincoln dealership across from the Larry Miller dealership on Mesa Street drive had one device available at the time; I don't know about now but it's worth to check it out.....

 

[KennyB123]

My Ford dealer already had the part in stock, surprisingly enough. They installed it this morning in 40 minutes. Attached are the old and new part.

 

[GDN]

Where did you get the module. Larry Miller in Mesa has had one ordered for my truck for over a month. I'm ready to buy and install myself.

I called my dealer last Tuesday. He could have already had it in stock, I don't know, but he said he would order the part. Either way - they had it in hand and installed it this morning.

I don't think your dealer is shooting straight with you.

 

[BSull]

My Ford dealer already had the part in stock, surprisingly enough. They installed it this morning in 40 minutes. Attached are the old and new part.

For you Knowledgeable parts people out there. I see the new part in the pictures above show PN: ML3T-10C652-BA but, I have a copy of the TSB and the new part listed there is ML3Z-10C679-B. Are either OK or should I go with the one in the TSB?