CSP 23B12 - High Voltage Battery Module Replacement for Previously Repaired Vehicles

[Mach-Lee]

It's funny that you said this just now! I was digging into this a bit more on my own and found this:

SSM 52039 2021-2023 Mustang Mach-E, 2022-2023 F-150 Lightning/E-Transit - Unable To Achieve 100 Percent State Of Charge After HV Battery Module Replacement

Some 2021-2023 Mustang Mach-E, 2022-2023 F-150 Lightning/e-Transit vehicles may exhibit a concern where the vehicle is unable to achieve 100 percent state of charge immediately after high voltage (HV) battery module balancing and replacement. This may be due to the battery energy control module (BECM) adjusting the cell balance (conditioning) of the battery module and should be corrected within 22 days. If the vehicle otherwise functions as designed with no related diagnostic trouble codes (DTC) setting, this concern will be corrected automatically with no further actions required by the technician.

So yeah - this is a situation where the dealer didn't share a warning about this. So all's well that ends well, I suppose. However, the "22 days" part is a "wow, that's a long while" item. But NBD - good to know that this is both normal-and-expected!

If the dealer doesn’t properly balance the new modules before installing, you will have problems with not being able charge to 100%. It can take like 6 hours to balance a module, so some dealers will cut it short for time. But as you found the problem will slowly correct itself over a period of weeks. I recommend charging to 90% daily until the battery is fully balanced.

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[SXBB]

Should I be concerned about using DC Fast Chargers before I get this service done?

 

[GrayWolf]

If the dealer doesn’t properly balance the new modules before installing, you will have problems with not being able charge to 100%. It can take like 6 hours to balance a module, so some dealers will cut it short for time. But as you found the problem will slowly correct itself over a period of weeks. I recommend charging to 90% daily until the battery is fully balanced.

Well that's unfortunate but at least it's not fatal. Thanks for taking a second to share a good action plan for this. I have no problem with doing this. Much appreciated, @Mach-Lee !

 

[mkhuffman]

@Mach-Lee, I suppose it does not help to run the car down to 10% and then charge it back up to 100% a few times?

 

[Mach-Lee]

@Mach-Lee, I suppose it does not help to run the car down to 10% and then charge it back up to 100% a few times?

If the pack is out of balance that won’t really help. You want to keep the battery close to full charge for several weeks so the BECM can level out the voltages at high state of charge (when the voltage differences are the most apparent).

 

[SXBB]

I'm finally having this addressed by my dealer at the end of April. I find myself wondering how my car qualifies for this recall. Aside from the HVJB being replaced, it's never had a major service. I got the car used from the dealer with only 3500 miles on it. I'm wondering if they didn't disclose a major problem that required dropping the battery & replacing battery modules???

 

[Mach-Lee]

I'm finally having this addressed by my dealer at the end of April. I find myself wondering how my car qualifies for this recall. Aside from the HVJB being replaced, it's never had a major service. I got the car used from the dealer with only 3500 miles on it. I'm wondering if they didn't disclose a major problem that required dropping the battery & replacing battery modules???

Used vehicle, so there was probably some type of battery repair before you bought the vehicle. That would not have been disclosed unless you specifically asked about or researched it. They won't just tell you it had a battery repair.

 

[JohnC]

I just got my 2021 GT back from the dealer where they took care of the HVBJB recall (23S56) and a couple of CSPs (22P31, 24N05, 23B12).

Regarding CSP 23B12, my dealer had to order a number of parts and I am to bring my vehicle back after the parts have been received.

I've never had the HVBJB replaced until this past week. I see that 23B12 is for vehicles that had the HVBJB replaced previously under another recall. Since I've never had the HVBJB replaced, I'm not sure why this particular CSP applies to my vehicle.

I purchased my vehicle new back in Oct 21.

 

[SXBB]

It seems like it’s a range of VIN numbers that triggers you to receive a notice for the 23B12 recall. Seems to me that means that this was a screwup during manufacture not due to a repair that went awry. I’m sure there were some instances where the TIM was not correct while being installed after a battery repair but how can they use a range of VIN numbers to qualify for a recall unless it was a factory error during manufacture?

 

[SXBB]

If anybody has had this service done recently, what was your experience with the time for the parts to be delivered to the dealership? I was just told it could be 6 weeks. I don't understand why they aren't told estimated time of delivery when they order the modules. In the interim they'll be holding onto my car...

 

[SXBB]

If anybody has had this service done recently, what was your experience with the time for the parts to be delivered to the dealership? I was just told it could be 6 weeks. I don't understand why they aren't told estimated time of delivery when they order the modules. In the interim they'll be holding onto my car...

?

 

[SXBB]

Uh oh... Had this CSP done. Had to use an ICE for 30 days while it was in for this service. Now when I charge on my Level 2 40amp charger it charges at 8.7 kw which is less than half the speed it used to. The Chargepoint Flex is set to run at 40amps. I also noticed that the battery is running down when I remote start even though it's plugged in to the level 2 charger. Anybody ever heard of these issues before?

Thanks,
Bruce

 

[HuntingPudel]

Uh oh... Had this CSP done. Had to use an ICE for 30 days while it was in for this service. Now when I charge on my Level 2 40amp charger it charges at 8.7 kw which is less than half the speed it used to. The Chargepoint Flex is set to run at 40amps. I also noticed that the battery is running down when I remote start even though it's plugged in to the level 2 charger. Anybody ever heard of these issues before?

Thanks,
Bruce

8.7 KW is just over 36A at 240V. Taking into account 10% or so losses, that just about right for a 40A EVSE. ??

My GT’s battery doesn’t deplete when it starts itself in the morning and is attached to my old dumb 32A EVSE. Is it possible that your smart EVSE has gone to sleep after reaching your car’s desired maximum SoC and therefore isn’t supplying power when your car is remote-started? ?‍?

 

[SXBB]

Thanks! I Could've sworn it was going at a higher rate before. I realize it's not necessarily reliable due to hallucinations(or input error) but I asked Chat GTP & it reported that about 19kw was expected, but I had neglected to add the 240v in the question. Adding in 240v it came up with 9.6kw minus a bit of loss sounds right.

Before the repair, if I remote started, when I unplugged, I'd hear a distinctive click and the set charge target was intact. Now I don't hear the click & the charge has dropped a couple of percent. I haven't changed any of the settings in the charger itself. I have been charging to 90% the past few days to help get the BMS balanced. I'll go back to my usual 60% target & give it a week to see if it improves.

Thanks

 

[Maquis]

Thanks! I Could've sworn it was going at a higher rate before. I realize it's not necessarily reliable due to hallucinations(or input error) but I asked Chat GTP & it reported that about 19kw was expected, but I had neglected to add the 240v in the question. Adding in 240v it came up with 9.6kw minus a bit of loss sounds right.

Before the repair, if I remote started, when I unplugged, I'd hear a distinctive click and the set charge target was intact. Now I don't hear the click & the charge has dropped a couple of percent. I haven't changed any of the settings in the charger itself. I have been charging to 90% the past few days to help get the BMS balanced. I'll go back to my usual 60% target & give it a week to see if it improves.

Thanks

The absolute max L2 charge rate of a Mach-E is 11.2 KW and that’s gross into the car. The net will be 10-10.5 KW. You need a 48A EVSE to get those rates.

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