When does Plugging in charge the 12V?

[Jerrytball]

If the blue light keeps pulsing after you've reached charge target, then you have a software bug. It needs an update. See this: TSB 24-2094 - High Voltage Battery Continues To Charge After Target Met

Like to mine tonight charging was supposed to stop at 85%, I got a pop-up saying charging has completed and when I went out there, the blue light was still pulsing so I push the button and unplugged but when I came back and looked at it says 84% so I guess I’m fine?

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[Sikkun]

If the blue light keeps pulsing after you've reached charge target, then you have a software bug. It needs an update. See this: TSB 24-2094 - High Voltage Battery Continues To Charge After Target Met

Interesting, while mine was built in that time period. It seems like if I turn the vehicle on while it’s plugged in, or get back in (which I’ve been playing with the OBD and trying to see if I can get in OTA updates). Then the blue light stays on and it keeps humming (I can’t say it stays on forever, but at least a couple hours).

But if just lock the vehicle, plug it in and stop messing with it then my wall charger is turning off, car stops humming, and the voltage drops as you say it should.

 

[JimmyMachE]

Charge limit set to 90%, it’s been done charging for hours now. The blue light is still pulsing though. Unless PAAK is just keeping it alive all the time? Has been like this for the last two weeks though. If I unplug voltage drops, I plug back in it goes up. SOC% in the 12v is normally 100% by the morning.

Some OBD2 sensors probably stop broadcasting or show strange value with ignition off. HVB Voltage 0.07V is clearly incorrect.

HvbA 0.5A - if true - suggests the HV battery was active and discharging at approx 190 watts (0.5A x circa 380V = 190W).

 

[zvez]

Guessing that isn’t likely to fix itself with an OTA? Still a little annoyed they didn’t run any updates when it had been sitting on the lot almost a year.

I was one of the first people with this problem which was identified in 23.5 cars. Initially an OTA was promised but I don't know if/when that'll ever happen. Ford called me, scheduled with my local dealer and the fix was applied at the dealership, in/out in less than 90minutes.

This is rather a long agonizing thread I started about this issue. But if you are suffering from the problem just tell the dealership the tsb mach - lee listed above https://www.macheforum.com/site/threads/charging-issue.30922/

 

[Sikkun]

Some OBD2 sensors probably stop broadcasting or show strange value with ignition off. HVB Voltage 0.07V is clearly incorrect.

HvbA 0.5A - if true - suggests the HV battery was active and discharging at approx 190 watts (0.5A x circa 380V = 190W).

Looks like my L2 agrees with that. Status it’s currently reporting even though I’m at charge target.

 

[stevenschwartz]

Dumb question - can one monitor the 12volt battery charge level from the ford app, or only on the website?

 

[Mach-Lee]

Looks like my L2 agrees with that. Status it’s currently reporting even though I’m at charge target.

Yes, you have the continuous charging bug and should have that TSB from post #10 done to fix that issue. It's just drawing enough power cover idle loads since the bug prevents the car from shutting down like it should.

Dumb question - can one monitor the 12volt battery charge level from the ford app, or only on the website?

Website only.

 

[Sikkun]

Yes, you have the continuous charging bug and should have that TSB from post #10 done to fix that issue. It's just drawing enough power cover idle loads since the bug prevents the car from shutting down like it should.



Website only.

Thanks. Though on the bright side having it apply a 13.4v charge to the 12v for a week seemed to recondition and let the 12v get up to 100% after sitting on the lot for 10 months.

Have an appointment scheduled and pointed them at the TSB. Will see how the dealership I bought it from service department is. Hopefully they just do the updated and don’t make me leave it.

 

[MrLoganRoss]

QQ: if I am up to date for FDRS updates, is the charging bug issue resolved or do they have to make a hardware change?

 

[medriver]

I'm confused as well.

So when plugged in and after the initial handshake my car will flash blue indicators.
It will charge to the prescribed limit and then fordpass will indicate plugged in NOT charging.
The EVSE will continue to be in "charge mode" but not actually deliver any current, the blue lights at the port continue to flash but not charging is going on.

Is this not the expected behavior?

I figured this was so it could request current at any time without having to re-do the handshake, is there some idle state my car is not using?

• 2023 Mustang Mach-E - Check
• Built on 29-May-2023 and through 21-Nov-2023 - Check
• Exterior blue charge status indicator segments flashing - Check
• High voltage battery continues to charge after preset charge target percentage has been met while using level 1 or level 2 charger. - Even though the above is true, the HVB stops charging.

@Mach-Lee

 

[OrchidMania]

I don’t know where you are seeing vehicle health. Not on app which website. Signed into ford.com. Nada.

 

[RandyMache]

Hi.
I was out of town for a few days and my 12V charge dropped. I plugged in about 3 hours ago (Ford Level 1), and in the pics you can see the effect on 12V charge.

Not sure it matters to anyone but thought I would post it.

I travel sometimes for weeks at a time. My 12v will go down to about 12.2v and then it goes back up to 12.9v all on it's own. I don't ever plug in my car except at DCFC. I think the it's supposed to boost the 12v battery automatically plugged in or not. At least that is my experience.

 

[zvez]

I don’t know where you are seeing vehicle health. Not on app which website. Signed into ford.com. Nada.

Log into ford.com then go to the upper right corner and click on the person icon, drop down menu, you'll select "...... account' (in my case it's Chris' account" this will give you the screen which shows 12v state of charge percent

 

[Mach-Lee]

So when plugged in and after the initial handshake my car will flash blue indicators.
It will charge to the prescribed limit and then fordpass will indicate plugged in NOT charging.
The EVSE will continue to be in "charge mode" but not actually deliver any current, the blue lights at the port continue to flash but not charging is going on.

Is this not the expected behavior?

I figured this was so it could request current at any time without having to re-do the handshake, is there some idle state my car is not using?

No, that is not expected behavior, you have the charging bug (post #10). The car is supposed to completely shut down when charging is finished. The EVSE should go to standby status.

I guess 2023 owners better check your charging behavior carefully, a lot of you might be wasting electricity on idling the vehicle electronics because of a bug you didn't know you had. When charging is finished, charge port lights should go dark and the EVSE clicks off.

 

[OrchidMania]

Log into ford.com then go to the upper right corner and click on the person icon, drop down menu, you'll select "...... account' (in my case it's Chris' account" this will give you the screen which shows 12v state of charge percent

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