Hight Voltage Battery overheating during charging on L2 after OTA

[AL C]

Ford person on the forum told me that the dealer will fix it - but I fear they will do the same as above and pass the buck on to Ford or my charging equipment.

It feels very frustrating to just have to go through the motions with them everything they screw up an OTA update

In all fairness to the dealer, when I took it to the dealer this was not a common problem. As they have been excellent to deal with. I don’t think this is a mechanic fix but a software or electrical engineer fix. You are correct though, very frustrating especially not changing at home.

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[Schmedlack]

Besides communicating with with Ford via the forum, I have spoken with Ford by texting and two phone calls. These people don't have enough expertise to provide definitive assistance. So in the end, I'm directed to see a Ford dealer. Several times I have been told that the problem is in my EVSE, but I know it's not. I am going to charge at several public charging stations and document the results. I wish to prove my home charging station is OK before my upcoming dealer appointment. I believe that OTA 6.6.0 or 6.2.1 caused our charging problem.

One more thing...... I think that the hot battery problem is bigger than many here may think. Every evening, many owners plug in their cars and don't know that their car is charging inefficiently. The next morning they see the preset charge level has been attained, and drive away, never suspecting a problem.

 

[Matstar]

Today Ford sent an engineer to work on my car which was at the dealership.

In a few hours of work he said he found the error in the OTA received which caused the problem of overheating and loss of energy on L2. He tells my dealer that my car is now repaired and I can go pick it up.

At home, I plug in the car and surprise!

The problem is STILL present. No change.

In only 20 minutes, the battery lost 4%...

So tomorrow back to the dealership.

Very disappointed!

UPDATE: Ford FIXED my MME charging / overheating problem.

Context : Friday, Ford Canada engineer came back to work on my car. And the good news is that everything seems to be back to normal. Car Scanner gives me numbers that are comparable to what they were before the bug. The image below shows normal charging on a low power L2.

I will continue to do tests and checks in the coming days to confirm that everything looks good.

Neither the dealer nor I know exactly what the engineer did. So for the moment, it is impossible for me to tell you if it is a simple modules update that the dealer can do. Or if it will be fix via a new OTA? Nor do I have any idea how long it will take before Ford publishes the procedure or sends an update. But at least now they know the problem and have managed to fix it.

One thing is certain though. Ford takes this issue seriously and appears to be working to resolve it quickly. The engineer they sent both times lives more than two hours away from my dealership.

A big thank you to the forum members (@Mach-Lee , @DevSecOps, and others) who used their contacts at Ford / Ford Canada for quickly getting things done with my car following my original post on the forum. Your involvement will help everyone else receive a fix as quickly as possible. THANK YOU

 

[mkhuffman]

UPDATE: Ford FIXED my MME charging / overheating problem.

Context : Friday the Ford Canada engineer came back to work on my car. And the good news is that everything seems to be back to normal. Car Scanner gives me numbers that are comparable to what they were before the bug. The image below shows normal recharging on a low power L2.

I will continue to do tests and checks in the coming days to confirm that everything looks good.

Neither the dealer nor I know exactly what the engineer did. So for the moment, it is impossible for me to tell you if it is a simple modules update that the dealer can do. Or if it will be fix via a new OTA? Nor do I have any idea how long it will take before Ford publishes the procedure or sends an update. But at least now they know the problem and have managed to fix it.

One thing is certain though. Ford takes this issue seriously and appears to be working to resolve it quickly. The engineer they sent both times lives more than two hours away from my dealership.

A big thank you to the forum members (@Mach-Lee , @DevSecOps, and others) who used their contacts at Ford / Ford Canada for quickly getting things done with my car following my original post on the forum. Your involvement will help everyone else receive a fix as quickly as possible. THANK YOU

This is how it is done. Or, as a Star Wars geek would say, "this is the way".

I am not a Star Wars geek.

 

[Gimme_my_MME]

If anyone else's vehicle has this issue and is at or going to the dealer, send me a DM

 

[kennelh]

UPDATE: Ford FIXED my MME charging / overheating problem.
...
Neither the dealer nor I know exactly what the engineer did. So for the moment, it is impossible for me to tell you if it is a simple modules update that the dealer can do. Or if it will be fix via a new OTA? Nor do I have any idea how long it will take before Ford publishes the procedure or sends an update. But at least now they know the problem and have managed to fix it.
...
One thing is certain though. Ford takes this issue seriously and appears to be working to resolve it quickly.

Glad you got it fixed. I suspect we'll see a post from @Mach-Lee sometime soon with details of a new SSM.

 

[Schmedlack]

Thank you for posting this. Very encouraging news. If your car can be fixed, maybe everyone else's can be fixed, too. Let's see how long it takes for an official documented procedure to be disseminated to the dealers. I will be paitent and optimistic. Please keep us up do date if anything changes with your car.

 

[Mach-Lee]

Looks like a configuration issue with the charger (SOBDM), a dealer will have to reprogram it (PMI) to fix the issue. We probably won't see a SSM for several weeks, so contact Gimme_my_MME when it's at the dealer.

 

[Schmedlack]

Looks like a configuration issue with the charger (SOBDM), a dealer will have to reprogram it (PMI) to fix the issue. We probably won't see a SSM for several weeks, so contact Gimme_my_MME when it's at the dealer.

Another thanks goes out to you. I will contact Gimme_my_MME the day before my car goes in for the PMI. I pushed my service visit out by a week in the hope that a verified fix would be available so only one trip to the dealer would correct things.

After the reprogramming, do you think the dealer would be amenable to testing my vehicle on their L2 charger? Checking the battery temperature with an OBDII scanner before and after a half-hour charge should verify successful reprogramming.

 

[MellowJohnny]

UPDATE: Ford FIXED my MME charging / overheating problem.

Context : Friday, Ford Canada engineer came back to work on my car. And the good news is that everything seems to be back to normal. Car Scanner gives me numbers that are comparable to what they were before the bug. The image below shows normal charging on a low power L2.

I will continue to do tests and checks in the coming days to confirm that everything looks good.

Neither the dealer nor I know exactly what the engineer did. So for the moment, it is impossible for me to tell you if it is a simple modules update that the dealer can do. Or if it will be fix via a new OTA? Nor do I have any idea how long it will take before Ford publishes the procedure or sends an update. But at least now they know the problem and have managed to fix it.

One thing is certain though. Ford takes this issue seriously and appears to be working to resolve it quickly. The engineer they sent both times lives more than two hours away from my dealership.

A big thank you to the forum members (@Mach-Lee , @DevSecOps, and others) who used their contacts at Ford / Ford Canada for quickly getting things done with my car following my original post on the forum. Your involvement will help everyone else receive a fix as quickly as possible. THANK YOU

Out of curiosity, where are you located? Sometimes being close to Ford's head office helps, although not so much in my case right now

 

[Matstar]

Out of curiosity, where are you located? Sometimes being close to Ford's head office helps, although not so much in my case right now

My dealership is in Sherbrooke, Québec. Ford sent an engineer from around Montreal.

 

[sid234]

If anyone else's vehicle has this issue and is at or going to the dealer, send me a DM

Sent a DM

 

[katumba1]

Question: Charging on L1 would eliminate the extra juice ($$) going to overheat the battery, correct? Sure its slow, but won't be throwing electricity out the window.

 

[Gimme_my_MME]

Question: Charging on L1 would eliminate the extra juice ($$) going to overheat the battery, correct? Sure its slow, but won't be throwing electricity out the window.

Incorrect

 

[katumba1]

Incorrect

please elaborate.

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