L2 charging speed recently dropped 33%

[kennethjk]

To further update what has been happening.

Back in October before I had the Mach E shipped to FL, I noticed my Juicebox 40 amp was supplying KW like a yo yo after about an hour. It went from 9.4 to 7.something up and down the rest of the time it was charging.

in florida while charging on my Autel 40 amp charger, I never had an issue - straight at 9.4 the entire charging time.

brought the Mach E back to NY and the yo-yo charging continues on my Juicebox.

I recently got a BMW ix50 and charging on my Autel was a straight 9.4 the entire time and it charges perfectly on the Juicebox also, no yo-yo effect.

I have reached out to Juicebox to try to understand why this yo-yo happens only on the Ford.

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[Shayne]

To further update what has been happening.

Back in October before I had the Mach E shipped to FL, I noticed my Juicebox 40 amp was supplying KW like a yo yo after about an hour. It went from 9.4 to 7.something up and down the rest of the time it was charging.

in florida while charging on my Autel 40 amp charger, I never had an issue - straight at 9.4 the entire charging time.

brought the Mach E back to NY and the yo-yo charging continues on my Juicebox.

I recently got a BMW ix50 and charging on my Autel was a straight 9.4 the entire time and it charges perfectly on the Juicebox also, no yo-yo effect.

I have reached out to Juicebox to try to understand why this yo-yo happens only on the Ford.

Same charger works on one vehicle not the other. I think you are reaching out to the wrong hardware supplier. It is the car that is the problem not the charger. Still same problem here never went to Florida and it never went away. Maybe I will call grizzle and complain to them.

 

[kennethjk]

Same charger works on one vehicle not the other. I think you are reaching out to the wrong hardware supplier. It is the car that is the problem not the charger. Still same problem here never went to Florida and it never went away. Maybe I will call grizzle and complain to them.

It could be a software issue with the juicebox that is causing the problem in the Ford or a software problem with Ford.

figured I would start with Juicebox, easier to get an answer, I hope.

 

[Fixbear]

It could be a software issue with the juicebox that is causing the problem in the Ford or a software problem with Ford.

figured I would start with Juicebox, easier to get an answer, I hope.

Sounds like the thermo sensor in the charge port is at the edge. This can be environmental to the location. Finding a intermittent problem is one of the hardest things one can do with a car. It can be something as minor as a 4 to 5 volt difference in the power supply to the EVSE unit. Or a harmonic.

 

[Mach-Lee]

It could be a software issue with the juicebox that is causing the problem in the Ford or a software problem with Ford.

figured I would start with Juicebox, easier to get an answer, I hope.

Or a hardware problem with your vehicle...

 

[Shayne]

Or a hardware problem with your vehicle...

I did get a snail mail CSP about burnt smells and there will be an OTA to address that. Hard to determine which OTA that was via the release notes. I assume it was the ones that list those modules on the GitHub Site. Got the November (6.6) 1 in the shop early but there was another in February that the car has not received here yet. Mine is slow at L2 charging after a shop install. 2+ years like a champ and then not. Software did it just not sure they can change it back.

How would one go about trouble shooting/fixing the type of hardware problem?

 

[kennethjk]

Or a hardware problem with your vehicle...

Could be but it works on my Autel perfectly, so there is a hardware piece that is not compatible with only my Juicebox? Anything is possible

 

[kennethjk]

Sounds like the thermo sensor in the charge port is at the edge. This can be environmental to the location. Finding a intermittent problem is one of the hardest things one can do with a car. It can be something as minor as a 4 to 5 volt difference in the power supply to the EVSE unit. Or a harmonic.

Maybe next year I will take my Juicebox to Florida and see how it works in Florida With the Mach E

 

[Shayne]

Maybe next year I will take my Juicebox to Florida and see how it works in Florida With the Mach E

You are fooling yourself. When it looks like a duck. Should be no problem doing that test next year. Not like there will be a fix by then.

 

[kennethjk]

You are fooling yourself. When it looks like a duck. Should be no problem doing that test next year. Not like there will be a fix by then.

Don’t expect there to be a fix, only to do more eliminations

 

[mkhuffman]

You are fooling yourself. When it looks like a duck. Should be no problem doing that test next year. Not like there will be a fix by then.

?

 

[ginipig]

So my 40A charger, charges a Tesla just fine. Once I plug into the Mach-E, I get a charge fault and it wont even charge, unless I manually step it down to 32A. Tried explaining it to the dealer, but they want a $199 diagnostics fee to even look at it.

Did you ever get this resolved? I'm having the same issue, get the red ring at 40A, but charge ok at 32A. Using a Grizzl-E Duo shared with two other MachEs, no one else has a problem. It cuts off three times, then throws the red ring. Dealer wants to check the charger, which impacts the the other drivers who depend on it.

 

[ChehRob]

There was a serous even deadly for 238 people, strange interaction between a certain model of Firestone tire and the Ford Explorer. Neither the same tire on other cars, nor other tires on the Explorer ever had the problem. Ford and Firestone bitterly blamed each other to the detriment of both. It was the interaction which never received a full engineering explanation, as I remember.

Interactions are strange.

 

[kennethjk]

There was a serous even deadly for 238 people, strange interaction between a certain model of Firestone tire and the Ford Explorer. Neither the same tire on other cars, nor other tires on the Explorer ever had the problem. Ford and Firestone bitterly blamed each other to the detriment of both. It was the interaction which never received a full engineering explanation, as I remember.

Interactions are strange.

And if I remember correctly the doomed firestone which was bought by Bridgestone

 

[Mach-Lee]

There was a serous even deadly for 238 people, strange interaction between a certain model of Firestone tire and the Ford Explorer. Neither the same tire on other cars, nor other tires on the Explorer ever had the problem. Ford and Firestone bitterly blamed each other to the detriment of both. It was the interaction which never received a full engineering explanation, as I remember.

Interactions are strange.

They were both at fault. Ford made the Explorer with a center of gravity that was too high, and when testing revealed this, rather that lowering the suspension or widening the track they decided to simply drop the rear tire pressure to 26 psi to reduce understeer rather than redesign anything. The low recommended pressure made it much more likely for a rear tire to burst. Firestone had some manufacturing quality issues that made their tires more likely to delaminate than other brands. So the defects were synergistic.

A lot of vehicle tech was developed after this to ensure it wouldn’t happen again. Stability control, tire pressure monitoring, and rollover stability tests are all direct outcomes of the Firestone incidents after intense safety scrutiny.

Mistakes happen, but Ford does take major safety issues much more seriously these days. So does NHTSA.

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