L2 charging speed recently dropped 33%

[azerik]

I wouldn’t expect it to drop below 32amp (6.6kW) even my 11 yr old Focus can handle that without issue. There’s a thread on 40+ amp charging and heat that covers it pretty well.

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[Mach-Lee]

I guess for this purpose my complete lack of a circadian rhythm has been useful. Couldn’t sleep so I went to check the car.
84°C coupler Temp and still doing 40amps. Fans were not running. But then I watched it drop to 30 amps. Stayed there until the coupler temp reached 74°C then back up to 40 amps. I watched for 10 more minutes and screen recorded my car scanner app. Took right at 5 minutes to then hit 83°C and fall back to 30 amps. This time to fans turned on and the temp took 3 minutes to fall all the way to 72° before it resumed 40amps.
So my new charge port is still reaching 84°C and charge is being throttled to 30 amp speed. It’s only 58°F on the garage tonight and still I can only maintain full 40 amps for about 5 minutes.
Now I’m going to assist myself to sleep while not assisting my liver function. Good night ?

The parameter you are looking at in Car Scanner is not actually the charge port temp. It's the charger internal temp. It's labeled wrong in Car Scanner (I emailed the developer and got no response about this error). The AC charge port temp parameter is not actually available in Car Scanner. You have to use FDRS or Torque to access it. The fans come on to cool down the charger coolant loop, the radiator fan would not affect the charge port internal temp in any measurable way, so you were just observing the charger cooling down as designed. Suggest reading my charging study to see what the parameters actually mean:

https://www.macheforum.com/site/threads/44a-charging-temperature-study.29165/

 

[brancky3]

I charged Wednesday for 5.5 hours on a 48a Tesla wall connector with my lectron adapter. The car went from 28% to 79%, meaning it had to have held 9kw the entire charge. This is a 2021 job 2 GT

 

[Shayne]

My EVSE is a juicebox pro 48. It's a smart charger that automatically draws the charging curve. I bought it specifically to be able to monitor and troubleshoot anything that occurs. Money well spent.

In hind site you may be right. I decided that it was just more technology and I'd keep it simple and let the car do it. My bad but I never thought the car would be programed to do what it is doing. Having faith in Ford engineering appears to have been my oversight.

I guess for this purpose my complete lack of a circadian rhythm has been useful. Couldn’t sleep so I went to check the car.
84°C coupler Temp and still doing 40amps. Fans were not running. But then I watched it drop to 30 amps. Stayed there until the coupler temp reached 74°C then back up to 40 amps. I watched for 10 more minutes and screen recorded my car scanner app. Took right at 5 minutes to then hit 83°C and fall back to 30 amps. This time to fans turned on and the temp took 3 minutes to fall all the way to 72° before it resumed 40amps.
So my new charge port is still reaching 84°C and charge is being throttled to 30 amp speed. It’s only 58°F on the garage tonight and still I can only maintain full 40 amps for about 5 minutes.
Now I’m going to assist myself to sleep while not assisting my liver function. Good night ?

A couple of little brown pill bottles sometimes helps.

Not really interested in analyzing or babysitting a defective car anymore. I cannot see my dumb charger if it jumps up and down but it averages 6 KW into the car after the software update which means it is not at 40 amp too often anymore. It drops and then stays there from what I see. Ford now does not display the charging speed in my app anymore which is likely due to an attempt to further mask it from the end users. Appears I may have an EA really defective port flagged by recent new software. Getting the feeling now with no DTC codes that this is another HVJB software fix for hardware that does not meet purchased specifications and/or intent. Getting a bad taste for Ford's transparency and ethics at this point.

 

[kennethjk]

set the juicebox box to 32 amp and the car charged between 7.53 and 7.6 kw straight all night

 

[Shayne]

set the juicebox box to 32 amp and the car charged between 7.53 and 7.6 kw straight all night

I may eventually go in the dumb box that is working and set the dip switches to 32 amp (old school com port). Wonder if the car can throttle lower than that?

If something on my charging system is overheating at my home I would like someone to advise me of what is going on and all is good. I have waiting for direction from Ford and then nothing yet. Based on other posts mine is a low average around 6.3 KW based on cals. It is approx. on battery capacity but in the ballpark at these temps. Is this 80C software what now makes it safe? Appears mine was running for a good long while below 105C but above 80C at 40 amps. 80C is good for CPU's. ?‍ Really would just like hardware that does not overheat.

 

[kennethjk]

When I set the juicebox to 40 amp the charging went from 9.3 kw to 6.3 constantly. So probably ended up charging in the same approx time.

maybe I will connect Obd to car and see if I can track temp while charging.

 

[Murse-In-Airy]

I may eventually go in the dumb box that is working and set the dip switches to 32 amp (old school com port). Wonder if the car can throttle lower than that?

If something on my charging system is overheating at my home I would like someone to advise me of what is going on and all is good. I have waiting for direction from Ford and then nothing yet. Based on other posts mine is a low average around 6.3 KW based on cals. It is approx. on battery capacity but in the ballpark at these temps. Is this 80C software what now makes it safe? Appears mine was running for a good long while below 105C but above 80C at 40 amps. 80C is good for CPU's. ?‍ Really would just like hardware that does not overheat.

Before Friday night, I had the Grizz dip switches at 32 amps for a couple months. It does still throttle, it just takes longer to get there. Still average 6KW whether the Grizz is set to 32 or 40 amps.

 

[Murse-In-Airy]

The parameter you are looking at in Car Scanner is not actually the charge port temp. It's the charger internal temp. It's labeled wrong in Car Scanner (I emailed the developer and got no response about this error). The AC charge port temp parameter is not actually available in Car Scanner. You have to use FDRS or Torque to access it. The fans come on to cool down the charger coolant loop, the radiator fan would not affect the charge port internal temp in any measurable way, so you were just observing the charger cooling down as designed. Suggest reading my charging study to see what the parameters actually mean:

https://www.macheforum.com/site/threads/44a-charging-temperature-study.29165/

Thanks for the read. I thought I was helping or at least proving/disporving. Guess i was wrong. I don’t have FDRS. Is Torque and iOS app? I’d be willing to try again.
I was pretty sure the fan coming on wouldn’t do anything for the charge port, But Ford has programmed stranger things into these cars. Anyway, thanks for the link to your thread.

 

[kdryden99]

I'll post the work order tomorrow. I got back at roughly 4pm. Here's my curve at 48 amps. Seems the temp sensor/plug harness resolved the issue.

 

[Murse-In-Airy]

Arrived home from the weekend with the wifes car at a low SOC. Plugged in last night with the Grizzl-E set to 40 amps. Woke up early and the car hadn’t finished charging (it should have by then). So I plugged in the OBDII reader and watched it for 45 minutes until the charge window closed.

What I see is 40 amp charging for just under three minutes followed by 30 amp charging for 12 minutes. Then repeat. Since I can’t see the actual charge port temp sensor (thank you for pointing that out @Mach-Lee), I can’t promise that’s the cause, but I think everyone on this thread will recognize this. It’s only 50 degrees F out in the garage. The fans are not coming on so the charger itself is not overheating. This is after a new charge port back in February. So maybe I got yet another bad charge port. But it does provide yet another firm example of charge throttling. And I guess I’ll be setting the Grizzl-E back to 32 amps so at least the car may recognize it will be charging slower and start before my window if need be.

 

[kdryden99]

As promised the work order

The first part
"Verified problem charging 48 amp doesn't charge. Scan test no code present except P0E5F multiple times in SOBDM. Verified OASIS nothing pertinent. Verify pins everything ok. Verify temp in BECM OK. Charge port seems defective. Order port from US"

 

[Shayne]

As promised the work order

The first part
"Verified problem charging 48 amp doesn't charge. Scan test no code present except P0E5F multiple times in SOBDM. Verified OASIS nothing pertinent. Verify pins everything ok. Verify temp in BECM OK. Charge port seems defective. Order port from US"

That is what I kind of guessed you had the code P0E5F and This was what help your dealer and you get fixed. We got the software that lowered the charging speed so we would never get that code and hence no fix. Just slow charging limbo for months with the current understand that our charging hardware is overheating and this latest inconvenience is for our safety so the vehicle does not catch on fire.

 

[kdryden99]

That is what I kind of guessed you had the code P0E5F and This was what help your dealer and you get fixed. We got the software that lowered the charging speed so we would never get that code and hence no fix. Just slow charging limbo for months with the current understand that our charging hardware is overheating and this latest inconvenience is for our safety so the vehicle does not catch on fire.

The fact it was not charging at 48 amps though seems to be the clincher not really the code.

 

[markboris]

I'm confused about this charge throttling/speed reduction. I've read where some have it and some don't. I've read it might have to do with a defective sensor in the chart port? I've read that there was an update sent out OTA which lowered the charge speeds?

Back in June on the second and fifth pages of this long thread, I posted screenshots of my charging graphs with no fluctuations nor reduction in charing speed. I was told that I possibly didn't receive the update yet. Here we are three months later and I still don't see throttling nor reduction in speed during charging. I do all my own updates with FDRS.

I charge in my garage which is temperature controlled to never go above 80˚ in the summer, below 66˚ in the winter. I have my Emporia charger set to only charge on excess solar but every once in a while I need to charge from my batteries. The last time I had to do this was on the 19th of this month. Below are graphs of my 3 hr 55 min charging session. Each graph is a 40 minute period. I have my charger set to the maximum 48A and on that setting, the car always charges a solid 43 amps. I believe I was around 65% SOC when I started but don't remember. The car is set to charge to 100% so as the battery nears fully charged, the speed starts to drop which is normal but I never get a fluctuation.

09/19/23 11:35AM - 3:25PM

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