Would a heater module blow the hv harness? Fixed post #47

[ronscantlin]

It’s Halloween, from my phone, I send the command to prepare the cabin for departure, and WHAM!, charging fault. I’m not too worried about it, seen it before, usually a glitch or something.
This time was different.
Have the truck towed, as now I can’t move it, it’s throwing the red death screen on both the truck to stop safely now and the phone that there’s an hv system fault.
A few days later, the dealer said to replace the HV harness.
Fast forward a couple months to now, and they’ve FINALLY finished replacing the harness (harness was on back order), and the tech experienced the same fault. Not fixed.
Now they’ve diagnosed the heater module as the culprit.
BUT the dealer still wants me to pay for the harness replacement.

Would a heater module “blow” the hv harness?

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[chriserx]

A 2022? I mean it'd be possible if it isn't fused. I find that scenario pretty unlikely though. Did they show you where exactly on the harness it's frying?

 

[ronscantlin]

A 2022? I mean it'd be possible if it isn't fused. I find that scenario pretty unlikely though. Did they show you where exactly on the harness it's frying?

No. They could not show where it’s frying. No contact damage or anything of the sort.

 

[chriserx]

I had actually assumed by heater module that you were referring to the cab heater, is that it or are they referring to the battery thermal heater?

 

[ronscantlin]

Oh wow, idk. I’ll have to get clarification on that.

 

[chriserx]

I don't have a 2022 with the resistive type heater, it could be a single heater for both cab and battery, I tried to google it and only ended up with more questions and it's too late for all that . If it is either a monolithic heater, or the pack heater, it becomes much more likely. But it would still surprise me if they put it in without some sort of fuse to protect the harness.

 

[chriserx]

Did some more browsing because now I'm curious. It appears to be a single unit as the cab has a heater core and I can't find anything regarding an auxiliary heater, the heater appears to be electronically regulated and with the exception of the main battery fuse, otherwise unfused. That's not good for the home team. I'm still pretty skeptical it could've drawn enough power to burn out the harness, but being a resistive type heater, unfused, in an electrically conductive medium puts it well within the realm of possibility just not likely imo. Did you complete the heater recall by chance? I'd contact the Ford EV hotline for guidance at this point.

 

[Heliian]

I would ask to see the codes.

 

[Grumpy2]

The PTC heater unit may have failed, and damaged the high voltage connectors. It would be good to see the damaged parts, especially if you have to pay for them.

 

[TaxmanHog]

I had actually assumed by heater module that you were referring to the cab heater, is that it or are they referring to the battery thermal heater?

For (2022 & 2023) They are one & the same, the diverter valve(s) control the flow of heat from the PTC to either the HVB or the cabin heat exchanger.

For 2024+ the PTC primary duty is to supplement heating the HVB, while the heat pump warms the cabin.

 

[Pottsie]

I really hated to see the news, but unfortunately with everything going on in this country, I’m not surprised at this point. Companies have to make money and clearly there wasn’t a path forward with the current platform.

With that said, it’s the best vehicle I have ever owned, and the “experiment” of mine, fully convinced me that I could be EV with any future vehicles. I have a 2006 F150 with 270,000 miles that I held onto as my weekend “I don’t care if I get a scratch or dent in it truck”. In all the years I have never towed so for myself, who likes the looks and the space in versatility that a truck gives, the lightning turned out to be a perfect fit for me.

I hold onto my vehicles for long term (think 15 to 20 years) so I’m not really concerned about any sort of resale value or deprecation. I know many people are because they flipped their vehicles often.

The only concern I have is what the availability of parts once it gets beyond that 10 year mark. I understand the aftermarket will provide some sort of gap coverage, so long as most of the parts share the same components as the traditional F150 ICE

I am sure there is a list of common parts used on our lightnings with the other 150 platforms. Does anyone know if it’s readily available.? I’m curious as to what parts are unique to our vehicles. Obviously anything related to the drivetrain and the battery components will likely need some outside intervention unless Ford steps up to protect us long term Ford owners who participated in this experiment.

It will be interesting to see if this forum turns into a used parts shop. (JK).

With all that said, I absolutely love my truck and hate that other others will not have the opportunity to understand what we all know. (At least for several years)

 

[Maquis]

I really hated to see the news, but unfortunately with everything going on in this country, I’m not surprised at this point. Companies have to make money and clearly there wasn’t a path forward with the current platform.

With that said, it’s the best vehicle I have ever owned, and the “experiment” of mine, fully convinced me that I could be EV with any future vehicles. I have a 2006 F150 with 270,000 miles that I held onto as my weekend “I don’t care if I get a scratch or dent in it truck”. In all the years I have never towed so for myself, who likes the looks and the space in versatility that a truck gives, the lightning turned out to be a perfect fit for me.

I hold onto my vehicles for long term (think 15 to 20 years) so I’m not really concerned about any sort of resale value or deprecation. I know many people are because they flipped their vehicles often.

The only concern I have is what the availability of parts once it gets beyond that 10 year mark. I understand the aftermarket will provide some sort of gap coverage, so long as most of the parts share the same components as the traditional F150 ICE

I am sure there is a list of common parts used on our lightnings with the other 150 platforms. Does anyone know if it’s readily available.? I’m curious as to what parts are unique to our vehicles. Obviously anything related to the drivetrain and the battery components will likely need some outside intervention unless Ford steps up to protect us long term Ford owners who participated in this experiment.

It will be interesting to see if this forum turns into a used parts shop. (JK).

With all that said, I absolutely love my truck and hate that other others will not have the opportunity to understand what we all know. (At least for several years)

How does this in any way relate to the topic of this thread?

 

[Lytning]

It’s Halloween, from my phone, I send the command to prepare the cabin for departure, and WHAM!, charging fault. I’m not too worried about it, seen it before, usually a glitch or something.
This time was different.
Have the truck towed, as now I can’t move it, it’s throwing the red death screen on both the truck to stop safely now and the phone that there’s an hv system fault.
A few days later, the dealer said to replace the HV harness.
Fast forward a couple months to now, and they’ve FINALLY finished replacing the harness (harness was on back order), and the tech experienced the same fault. Not fixed.
Now they’ve diagnosed the heater module as the culprit.
BUT the dealer still wants me to pay for the harness replacement.

Would a heater module “blow” the hv harness?

If the dealer has "diagnosed" (meaning "guessed") wrong again, will they expect you to pay for the heater module, too?

 

[ronscantlin]

I would ask to see the codes.

 

[ronscantlin]

If the dealer has "diagnosed" (meaning "guessed") wrong again, will they expect you to pay for the heater module, too?

Yes, they said they “meet me halfway” only on the heater lol

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