Hight Voltage Battery overheating during charging on L2 after OTA

[mkhuffman]

If you do not regularly charge on L1 or low power L2, the likelihood this impacts you is infinitesimal small

That's pretty small.

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[azerik]

Thankfully this thread popped up for me. I was going to drive mine up to Flagstaff but I'm thinking not taking the risk is the better choice.

 

[naturalctx]

If you do not regularly charge on L1 or low power L2, the likelihood this impacts you is infinitesimal small

Except that it 100% affects every single owner by way of inflating their monthly electric bills by up to hundreds of dollars per month? Always on = always wasting energy.

 

[mkhuffman]

Except that it 100% affects every single owner by way of inflating their monthly electric bills by up to hundreds of dollars per month? Always on = always wasting energy.

No, it is not affecting 100% of every owner. My OTAs are up to date and my L1 charge speed is totally normal. My guess is very few owners are impacted by this problem.

I even got out my stupid L1 Ford charger to prove it.

 

[naturalctx]

No, it is not affecting 100% of every owner. My OTAs are up to date and my L1 charge speed is totally normal. My guess is very few owners are impacted by this problem.

I even got out my stupid L1 Ford charger to prove it.

My response was in the context of owners affected MMEs, not the entire owner population. Please don’t conflate semantics. I’m glad yours is functional though.

 

[Schmedlack]

If scheduling the car for service at the local dealer, will the technicians be aware of this? Should I wait until this problem is more widely-known before making an appointment? I'm puzzled that there haven't been more complaints about this issue. Is it confined to only a few cars? That seems unlikely.

The service techs are faced with isolating a problem which they have not seen before. Unguided fault isolation may waste time and provide no results. Written/verbal help from Ford must eliminate technician guesswork. I think that the "fix" can be a very simple procedure once fault isolation is improved or eliminated.

Ford knows this quite well. Contact Gimme_my_MME when you car goes to the dealer. This account has some kind of connection to Ford. This path may provide the best results.

 

[AlpaChino]

No, it is not affecting 100% of every owner. My OTAs are up to date and my L1 charge speed is totally normal. My guess is very few owners are impacted by this problem.

I even got out my stupid L1 Ford charger to prove it.

What year is your MME?

 

[ZedThou]

No, it is not affecting 100% of every owner. My OTAs are up to date and my L1 charge speed is totally normal. My guess is very few owners are impacted by this problem.

I even got out my stupid L1 Ford charger to prove it.

Your car may very well be unaffected, but I am unsure how the screenshot shows this. What I am seeing is that L1 charging begins heating the battery at up to 10 kW power, which cannibalizes the battery's energy until it reaches about 50° F, and then the charger's energy finally reaches the battery.

At what temperature was the HVB when the L1 charge session began?

 

[sid234]

Got a call from my dealer today - Engineer from Ford wants to check my car and apply an update. Scheduled to drop car off on Jan 8

 

[mkhuffman]

Your car may very well be unaffected, but I am unsure how the screenshot shows this. What I am seeing is that L1 charging begins heating the battery at up to 10 kW power, which cannibalizes the battery's energy until it reaches about 50° F, and then the charger's energy finally reaches the battery.

At what temperature was the HVB when the L1 charge session began?

I didn't connect to my OBDII scanner to get temp readings. Regardless, I am unable to do a cold weather test right now because my car is parked in the garage. So if this only happens at 50 degrees or lower, I cannot confirm if my car has the issue or not. Maybe tonight I will pull it out of the garage and let it sit over night to cool the battery and test again. I will do it if the result is helpful to someone else.

 

[Schmedlack]

Got a call from my dealer today - Engineer from Ford wants to check my car and apply an update. Scheduled to drop car off on Jan 8

Thanks for this information. Your good news is my good news. I think you will get your car back sooner than later. Sid, could you do me a favor? When you pick up you car, could you ask the service guys how they verified that your car is fixed? Then could you post the response? A final checkout is an integral part of any "good" repair procedure.

My MME goes to the dealer on the 8th, too. I hope we both have a quick fix. If all we need is a software update, maybe I won't go home. Instead, I'll walk across the street to Tractor Supply to refresh my wardrobe.

I'll get back to you so we can compare notes.

 

[Matstar]

Thanks for this information. Your good news is my good news. I think you will get your car back sooner than later. Sid, could you do me a favor? When you pick up you car, could you ask the service guys how they verified that your car is fixed? Then could you post the response? A final checkout is an integral part of any "good" repair procedure.

My MME goes to the dealer on the 8th, too. I hope we both have a quick fix. If all we need is a software update, maybe I won't go home. Instead, I'll walk across the street to Tractor Supply to refresh my wardrobe.

I'll get back to you so we can compare notes.

My car was one of the first, if not the first, to be fixed by a Ford engineer. It took two visits to the dealership. the first time he told me everything was fixed because it was charging on the dealer's charger.

But the problem was still present on L1 or Low L2 and the Ford engineer returned for a second day. It took him between 3 and 4 hours to find the problem and fix it.

So now, they already have a good idea of the problem, so there's a good chance your car will be ready in just a few hours maximum.

For the moment, since an engineer is coming to correct the problem, the dealer has no idea of the work done. therefore the work order will not really contain much explanation about the work done.

 

[katumba1]

My car was one of the first, if not the first, to be fixed by a Ford engineer. It took two visits to the dealership. the first time he told me everything was fixed because it was charging on the dealer's charger.

But the problem was still present on L1 or Low L2 and the Ford engineer returned for a second day. It took him between 3 and 4 hours to find the problem and fix it.

So now, they already have a good idea of the problem, so there's a good chance your car will be ready in just a few hours maximum.

For the moment, since an engineer is coming to correct the problem, the dealer has no idea of the work done. therefore the work order will not really contain much explanation about the work done.

Can you please post the pic of the Summary of Work done by the tech?

 

[Matstar]

Can you please post the pic of the Summary of Work done by the tech?

I will not post the photo of the Work Order here because it is in French ?.

As I said above, there aren't many details. the only information indicated is that it repaired a charger error received via an OTA. Speaking in person with the dealer's technical advisor, he couldn't tell me more because the engineer didn't give him any details either.

 

[katumba1]

I will not post the photo of the Work Order here because it is in French ?.

As I said above, there aren't many details. the only information indicated is that it repaired a charger error received via an OTA. Speaking in person with the dealer's technical advisor, he couldn't tell me more because the engineer didn't give him any details either.

Gotcha, thanks. How about the name of the dealer? Just so I can tell my dealer someone to attempt to contact?

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