Dead Car Thanks to Cold Temps Causing HVB Module Errors

[Rabidsquirrel22]

I'm sorry you're going through this. When you say you weren't able to get it jumped, what steps did you take here? Did you get any response from the electronics inside the car once you were connected to another car?

Yeah the car can go into accessory mode, lock, unlock, etc. no problem, even before I tried jumping it. I followed the standard vehicle jumping procedure and let the cars stay connected for about 25 min while the other one idled. Didn’t seem to do it.

Whereabouts in Michigan are you? I doubt you're anywhere close by to Chicago, but I have battery jump packs, 12v AGM charger, and FDRS hardware. Be willing to help if you're not far.

I actually am in Chicago visiting my girlfriend and the car is stuck in Rush’s parking garage lol. I appreciate the offer, that would be incredibly generous of you. If you’ve got some time tomorrow, I’ll be back there for round 2.

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[hawkeye3point1]

Well it sounds like you did everything right assuming the cables were good.

Hate to say it, but that car may DOA because the DCDC or HVB interlock are not working properly to supply enough current to power all of the modules, hence all of the error msgs.

Can it be dolly towed out of the garage to where it can be loaded on a flatbed?

 

[Rabidsquirrel22]

Well it sounds like you did everything right assuming the cables were good.

Hate to say it, but that car may DOA because the DCDC or HVB interlock are not working properly to supply enough current to power all of the modules, hence all of the error msgs.

Can it be dolly towed out of the garage to where it can be loaded on a flatbed?

That’s what I’m afraid of. Pretty much worst case scenario if it comes to that.

Yeah that’s exactly what the drivers told me I needed to get it towed out of there. And that’s what I relayed to Ford Roadside to send me. But they failed to do that on attempt #2 and #3. I might try roadside assistance through my insurance tomorrow, idk if it will be free but I’m willing to pay a small deductible if I can actually get what I need.

 

[DevSecOps]

Can you actually test the voltage on the battery? If you can get it into accessory mode it doesn't sound like an LVB issue to be honest. Or can you install one of the widgets here and get a "not so accurate" reading at the very least? It should be 12v or above and the that would rule out LVB.

It could be a plethora of other issues.

 

[Rabidsquirrel22]

Can you actually test the voltage on the battery?

I have absolutely no equipment with me unfortunately. Lesson learned. There’s a Target and another store I’m going to walk to tomorrow morning and see what they’ve got, but I’m not optimistic.

 

[DevSecOps]

I have absolutely no equipment with me unfortunately. Lesson learned. There’s a Target and another store I’m going to walk to tomorrow morning and see what they’ve got, but I’m not optimistic.

I modified my post and asked if you could install one of the widgets for iOS or Android and see what the voltage is reported as. It's only in .5 increments but it will give a slight idea of where it is.

 

[Rabidsquirrel22]

I modified my post and asked if you could install one of the widgets for iOS or Android and see what the voltage is reported as. It's only in .5 increments but it will give a slight idea of where it is.

I didn’t know you could get any readings off of an app without any kind of diagnostic equipment plugged in. Something else to try tomorrow. Appreciate it!

 

[Carsinmyblood]

I'm thinking we need to start numbering these 12v issues. Too many to keep track of.

Ford should include a set of wrenches so we can disconnect the 12v and plug it back in after 10 minutes. We ARE driving big laptops.

 

[DevSecOps]

I'm thinking we need to start numbering these 12v issues. Too many to keep track of.

Ford should include a set of wrenches so we can disconnect the 12v and plug it back in after 10 minutes. We ARE driving big laptops.

The thing that bothers me about most of these posts is that there's no resolution from the OP. So when someone says they have an issue there's an immediate jump to conclude that the LVB is at fault. For some of us who practice critical thinking. we challenge those ideas for the sake of understand the underlying problem or getting to the truth. We want to know the resolution, the voltage etc.

So, my ask of rabid is that he please let us know the outcome and get a reading of the voltage. I'm not saying it's not the LVB, but it could be any number of things. He has full accessory power, which is different from most of the other reported LVB issues.

 

[Rabidsquirrel22]

The thing that bothers me about most of these posts is that there's no resolution from the OP. So when someone says they have an issue there's an immediate jump to conclude that the LVB is at fault. For some of us who practice critical thinking. we challenge those ideas for the sake of understand the underlying problem or getting to the truth. We want to know the resolution, the voltage etc.

So, my ask of rabid is that he please let us know the outcome and get a reading of the voltage. I'm not saying it's not the LVB, but it could be any number of things. He has full accessory power, which is different from most of the other reported LVB issues.

I will hopefully have more answers tomorrow. The symptoms match a lot of the LVB failure stories I’ve seen on here, as well as the fact that the problem happened after the car sat unplugged all day at work in the cold, hence the (probably). I haven’t really payed attention to how many still had accessory power or not.

 

[Electric Goat]

OP... sorry to hear about your issues. My GT did the exact same thing to me on Thursday afternoon. I had it towed to my local dealer immediately. It's been there since then and they're trying to figure out what the problem is. ?

I am now in a dealer loaner until who knows when....

 

[Rabidsquirrel22]

OP... sorry to hear about your issues. My GT did the exact same thing to me on Thursday afternoon. I had it towed to my local dealer immediately. It's been there since then and they're trying to figure out what the problem is. ?

I am now in a dealer loaner until who knows when....

Damn sorry to hear that. Let me know what they end up telling you.

 

[kltye]

Yeah the car can go into accessory mode, lock, unlock, etc. no problem, even before I tried jumping it. I followed the standard vehicle jumping procedure and let the cars stay connected for about 25 min while the other one idled. Didn’t seem to do it.


I actually am in Chicago visiting my girlfriend and the car is stuck in Rush’s parking garage lol. I appreciate the offer, that would be incredibly generous of you. If you’ve got some time tomorrow, I’ll be back there for round 2.

Great! I'll be available around 2pm. PM me the exact address and I'll meet you there.

PS: If you want to try something this evening, let me know as well.

 

[Crilly]

Did you disconnect the 12 volt battery? Try the reset.

 

[Rabidsquirrel22]

Did you disconnect the 12 volt battery? Try the reset.

Nope I didn’t have a 10 mil socket to try that. It’s on the shopping list for tomorrow morning, but based on other peoples threads I’m not optimistic about it doing any good.

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