Misadventures and a bricked car

valeriol

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File this under venting and lessons learned.

Saturday I was going to run a few errands. Before going I checked online and it showed the LVB at 46%, low, but not critical and I decided that I was going to charge it once I got back (more about this below). First stop, no problem, second stop a quick dash into CVS to pick up a prescription, when I get back into the car every possible warning message pops up. Turn everything off, get out of the care, wait a few minutes and try again, same story.

I decided to call Ford to see if they can diagnose remotely. As I'm battling with the phone menus, an idiot decides to do a U-turn at a pretty high rate of speed and, despite the fact that the street there is 4 very wide lanes, manages to hit me. After getting out and covering the driver with insults, I got all the necessary info and went back to the matter on hand. I was hoping to get in touch with someone that could perform remote diagnostics, but all I could get was roadside assistance (don't know if this was because it was a weekend) and it took me several tries before I could talk to a human being. The person I talked to informed me that they could not help figure out what was wrong, nor could they put me in touch with someone who could, and offered to send a tow truck which I accepted (bad choice). He asked me if I could put in neutral and I told him I wasn't sure (I was afraid of experimenting and then not being able to do it again once the tow arrived). 45 minutes later the tow truck arrived and despite all my attempts I could not get it into neutral. I tried the fail-back method of pressing both accelerator and brake, the gear button would unlock, but as soon as I tried to turn it it would jump back to P and lock again. Decided with the tow driver that I needed a tow with dollies, which his company did not provide. Called back Ford and they told me they would schedule a pick up with somebody who did. Since I was less than 15 minutes walk away from my house, I decided to go home to wait. I called several time Ford only to hear a message stating that my case had been escalated, while getting a few text messages from Ford asking me if the tow had arrived.

After 3 hours I decided to go back to the car to check on it and leave a note (it was technically in a no-parking area, although on weekends they never ticket there). On my way I was called by Ford to inquire on the details of my tow. I pointed out that I needed somebody with dollies and was told "I can do that". I pointed out that I had already been told that 3 hours earlier and he had no record of it. As he's scheduling the tow he told me to take down their direct number, I told him that I was in the street and he should send me a text and was told they did not have the ability to do so. I told him that the people they talk to are stranded on the road and cannot take down numbers and in any case Ford had been sending me texts, to no avail. 2 hours later the guys with the dollies arrived and brought it to the dealer and now I waiting for them to run diagnostics.

End of rant.

I regret not asking for a jump first, my suspicion is that it was an issue with the LVB and that would have solved it, at least for the time being. I'm starting to think that the 46% that I got from my account on the web was incorrect and start to wonder how reliable it is. I have an OBD device and I do use Carscanner, but I do that when I return home to determine if I need to charge it or not. I wish I had done so before leaving and I might have been able to see the problem. Couldn't they put a "Status" button on the care home page that would display the vital statistics in real time ? The system has all the information and there is the space.

About the charging. We live in the NY metropolitan area and the subway is almost always the best option. The car is stored in a parking garage with no chance of hooking up an external charger. So, if I see the SOC drop below 50%, I turn the car on in the garage, disable the system time-out, set the screen to calm, lower as much as possible the dash brightness, turn off lights, stereo and HVAC, hide the fob in the bottom of the car and lock using the phone. A few hours later I go back to turn the car off. Cumbersome and annoying, but I don't really have a choice. BTW: I still have one of those portable battery boosters that I had bought for my old ICE, would that work with the Mach-E LVB in case of emergency ? If I keep it in a place that is easy to reach and assuming i can get into the car, it could get me out of a similar jam.
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redgrandam

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Yes you can use those lithium battery boosters to unlock the frunk and boost the battery to get going.

This is more than just a Ford problem, but I don’t get why they don’t have the car wake up periodically to check the LVB and top it up sooner. I know it’s supposed to at some point, but it is very low by then.
 

TheSteelRider

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if I see the SOC drop below 50%, I turn the car on in the garage, disable the system time-out, set the screen to calm, lower as much as possible the dash brightness, turn off lights, stereo and HVAC, hide the fob in the bottom of the car and lock using the phone. A few hours later I go back to turn the car off. Cumbersome and annoying, but I don't really have a choice. BTW: I still have one of those portable battery boosters that I had bought for my old ICE, would that work with the Mach-E LVB in case of emergency ? If I keep it in a place that is easy to reach and assuming i can get into the car, it could get me out of a similar jam.
I'm confused at why you do this? The car is designed to maintain it's own systems, so are you doing this because you read you were supposed to or is there some other history or context here?
 
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valeriol

valeriol

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Yes you can use those lithium battery boosters to unlock the frunk and boost the battery to get going.

This is more than just a Ford problem, but I don’t get why they don’t have the car wake up periodically to check the LVB and top it up sooner. I know it’s supposed to at some point, but it is very low by then.
Thanks, I keep the booster charged and I'll put it in the car (didn't think about it until last night).
They should also have the app send you a message about low battery. I believe it does, but, as you said, when it's already critical.
 

MBCook

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Do you have an option of using a L1 charger? That will give your car tons of time to top-up the LVB.
 


RickMachE

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This kind of stuff is ridiculous. Every tow dispatched for an EV should know how to charge up the 12v to get the vehicle to shift into tow mode to go on a flatbed, OR bring dollies.
 
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valeriol

valeriol

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Do you have an option of using a L1 charger? That will give your car tons of time to top-up the LVB.
There are no power outlets in the garage. I was on the street, no chance of plugging it in anywhere, besides how would I open the trunk. I know that someone posted how to manually release the trunk, but frankly I couldn't figure out from the image where the access panel is in the car.
 

LeanneL

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There are no power outlets in the garage. I was on the street, no chance of plugging it in anywhere, besides how would I open the trunk. I know that someone posted how to manually release the trunk, but frankly I couldn't figure out from the image where the access panel is in the car.
There is a little panel under the passenger side headlight. You just push it gently in the top right corner. When you get your car back, take a look. And those booster packs work perfect to get the funk open!
 
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valeriol

valeriol

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There is a little panel under the passenger side headlight. You just push it gently in the top right corner. When you get your car back, take a look. And those booster packs work perfect to get the funk open!
Thanks, I will look.
 

AZMMESTAR

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How 'bout some info on the 2021 car itself? Mileage?
 

ack154

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I'm confused at why you do this? The car is designed to maintain it's own systems, so are you doing this because you read you were supposed to or is there some other history or context here?
Seriously. I'd love to know the story here. What is that all about?
 

helium89

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I'm confused at why you do this? The car is designed to maintain it's own systems, so are you doing this because you read you were supposed to or is there some other history or context here?
It’s supposed to maintain the 12v battery, but it lets it get pretty low before it uses the high voltage battery to top it off. We rarely go more than a few days without driving, but we’ve still had issues with the 12v battery getting low enough to cause a bunch of weird problems. I understand that Ford wants to minimize high voltage battery drain, but it’s pretty frustrating to get blasted with ear piercing static noise when there’s a fully charged high voltage battery that could have prevented it.
 

TheSteelRider

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It’s supposed to maintain the 12v battery, but it lets it get pretty low before it uses the high voltage battery to top it off. We rarely go more than a few days without driving, but we’ve still had issues with the 12v battery getting low enough to cause a bunch of weird problems. I understand that Ford wants to minimize high voltage battery drain, but it’s pretty frustrating to get blasted with ear piercing static noise when there’s a fully charged high voltage battery that could have prevented it.
It seems almost assured that it was the result of a bad 12v LVB, not the BMS. It is true that the Mach E allows the 12v LVB to get uncomfortably low according to most people's standards, but nevertheless it does monitor the voltage and will charge it as necessary without all the hoops. I would love to hear what @Mach-Lee has to say about your situation, he has been very helpful here with 12v LVB issues and might be able to help you make sense if this unusual situation.
 

mccdeuce

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I'm confused at why you do this? The car is designed to maintain it's own systems, so are you doing this because you read you were supposed to or is there some other history or context here?
something does not seem right. The HVB should maintain the LVB once it hits certain wickets.

i shipped my MME across the country for 5 days. In that process it started with an LVB of 50%. I disabled the alarm, but of course the trucks first stop they had to cycle the cars. And so basically the alarm was draining the battery across the country. Once the LVB hit 30%, the HVB charged the LVB to 95%.

sounds like you have some other drain that is causing LVB to fall too low too fast for HVB to charge.
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