L2 charging speed recently dropped 33%

[shelnian]

On Nov 1, 2023 my Emporia L2 app started indicating a max charge rate of 7KW. It use to be around 11KW. The charge rate doesn't start higher and then come down, it ramps up to 7KW and stays there for the entire charge session so it didn't appear to be a derating issue. I finally looked at the Emporia settings and found the charge rate was set to 30A. I changed it back to 48A and I'm back to 11KW charging. Emporia must have updated their firmware, which reset the charging amps to 30A.

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[Shayne]

I don't expect an actual fix. Much like the HVJB. Which, after weeks of the hunt for a GTPE I'm calling it off and will just ride this out. I'm lucky enough to be able to survive my EV experience at a 32amp charge rate, others won't be able to. As some evidence above is showing a 9+kW charge rate which is close enough I wouldn't complain. I'm assuming Ford is going play the card where 'it charges' and will point back to some software EULA that says 'features maybe removed or modified at any time.'
I will be scheduling mine for it's plethora of shit at the dealer. The US isn't as screwed as ROW but this is one of those horse pills to swallow.
And again. I think it's time for social protest. It seems like the other feedback button is just to easy to bury.

Since they have silently done this to owners and it has now been half a year for some I have the feeling you may be right. With over 38,000 views of this thread take comfort we are not alone but just more vocal in saying it like it is. If Fords new transfer function makes your car charge a 4 KW they appear so far set to ignore that. With no DTC it appears they have premeditated that response.

 

[Murse-In-Airy]

I’m almost at a year of dealing with this. Does it was a bad charge port but even after getting that replaced I still can’t charge at full rate. So…. It’s been quite a bit longer than 1/2 a year for some of us.

 

[COACH CHRIS]

I’m almost at a year of dealing with this. Does it was a bad charge port but even after getting that replaced I still can’t charge at full rate. So…. It’s been quite a bit longer than 1/2 a year for some of us.

Frustrating. Wonder if @Ford Motor Company has anything to say on the matter?

 

[generaltso]

Frustrating. Wonder if @Ford Motor Company has anything to say on the matter?

I’m sure they’d be happy to collect your VIN and dealership info.

 

[Ghost Ryder]

I had the same issue, took the car to the dealership when the HVBJB went kaput. Mentioned this to them and they updated the charging port software. Now it charges consistently at 9KW instead of 6.

 

[Shayne]

I’m almost at a year of dealing with this. Does it was a bad charge port but even after getting that replaced I still can’t charge at full rate. So…. It’s been quite a bit longer than 1/2 a year for some of us.

Wonder if it is the derating software that is slowing yours down as I am not sure it existed a year ago. Maybe you were the first beta tester for them.

Mine happened exactly when it was updated June 6 2023 with what I understand now was a L2 thermal transfer function to monitor charging port temps and capping it at 80C by slowing down the charging speed. It got installed way before CSP 23B50 - Charge Cord Stuck but exact same modules updated as that CSP. Waiting to see if the new power up 6.6 transfer function (actual CSP) loosens the cap or has better logic as it charged to spec for 2.5 years with no melting or burn smells but now not well at all.

I asked my service to show me it works at their place and was ignored. Pleasant experience when you show them it is charging at 4 KW of a 40 amp charger and get nothing. They do what they are told and are paid for is my take. So starting to understand your position after putting up with this for a year.

Still charges which is good for us as I understand people had to deal with it not and this transfer function is a result of a long haul for some. It corrects a burnt smell and melting of the port which if that happened it would have been worse. Something is wrong with the design that is for sure and appears that again Ford is providing software for a fix.

 

[Shayne]

I can confirm here that -15C (5F) is not a cold enough ambient temperature to stop the charging port from over heating and the charge rate still derates and is being throttled. Wonder how cold it needs to be before the port does not overheat? Pretty much ridiculous at this point. Never overheated, no melting, no burnt smells but now at -15C it is overheating.

 

[Murse-In-Airy]

“Overheating.” I think that may be the new “Soon.”

I really wish Ford would admit that they made the charge throttling temperature threshold TOO conservative like the intial charge curve and the 5 second limit on the GT’s. At least then I could try and give credit for a cautious approach.

 

[kennethjk]

I gather Ford prefers to keep us in the dark but probably not much different from other car companies. Really a shame they leave Forum and other owners to come up with their own guesses

 

[Shayne]

I gather Ford prefers to keep us in the dark but probably not much different from other car companies. Really a shame they leave Forum and other owners to come up with their own guesses

My guess at this point with a number of -10 to -15C it has nothing to do with overheating and more to do with it reading the heat correctly or the hardware providing the heat info is pooched. There is always the guess it runs at 85C in -15C but I don't think so.

 

[Peugfan]

Update after PowerUp 6.6:
It appears that the update software changed the charge current derating from a sawtooth pattern to just an adjustment to a lower current or kw rate.In my case it dropped my kw rate from 9.45 to about 8.75. It's not what Ford advertised but it does not cause me issues that I can't live with.

Charge curve before update:

harge curve after update:

 

[Shayne]

Some have not received 6.6 to date and may never if history repeats itself. Appears that the MME L2 charging speed no longer will meet purchased specifications for some due to defective design of hardware and another software bandage, like what was provided for the HVBJB, will be provide here again.

The complete lack of transparency and the way this was carried out (snuck in to keep you guessing) is something I most likely will not live with again but it appears will have to for this one. Unlike the HVBJB software maybe it will fix the charging port from melting and having burnt smells but then again maybe not.

Since after 2.5 years and no melting or burn smells I think this will just slow down charging speed for a lot of owners. Guess we could all live driving a Bolt also however that is not what we paid for or purchased. Frankly I have been totally unimpressed with Ford ethics. Took something good and tainted it by covering up and not fixing their own mistakes.

 

[azerik]

Oh they must have needed to move the car to the center of the IPC in order to get the charge curve fixed.
This and a couple other real issues keep setting off a "Service Vehicle Soon" light in my head. If this is the way 3 year old MME's are going to be handled there is no hope for fixes when the gen2 comes out (if it ever does).

 

[Shayne]

Bump.

Has anyone got any progress on this or is it still in the stage of no transparency and ignore owners with the problem? I have nothing except that the new TSB for slow charging has nothing to do with fixing our problem. Close to 8 months now and not even the decency of acknowledgement to date. Thanks go out to @Ford Motor Company. Always loved engineers on project that were too cheap to own up to and fix their own mistakes. At least acknowledging there is a problem and they are working on it would goes a long way for creditability.

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