Mach-E 12v Battery Issues

[stafford]

I'm posting here hoping to get some involvement from Ford. I'm not a hater - I generally love and have been a big fan of the car, and I have many family and friends at Ford, including at roles where I can escalate this further if this fails. I'm trying to avoid drama for them.

Thanks in advance for any assistance.

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[Neil4Real]

@Mach-Lee can correct me if I'm wrong, but that DTC calls to replace the HVBJB per the below:

https://www.macheforum.com/site/thr...-message-low-or-discharged-12v-battery.20243/

Tell your dealer the TSB number and read this thread so you can get a case started:

https://www.macheforum.com/site/thr...ers-biggest-fear-facts-and-info-thread.18143/

 

[Mach-Lee]

I agree with the hotline engineer’s message, this is just a dead 12V battery, not a HVBJB problem that I can see. OP, we need to know more about what your wife did leading up to the dead battery event. Was it charging, was it left on, etc?

OP, go back and read my topic for ideas on the cause of the 12V drain: https://www.macheforum.com/site/threads/how-to-recondition-service-your-12v-battery.11069/

I will need your VIN to look at history.

 

[stafford]

She had left it parked for a few hours while attending a show. It was at roughly 92% battery (was fully charged when she left the house). I don't believe she would have left it on, but never say never. When we jump started it, it still had 92% or so on the main battery.

 

[Mach-Lee]

Thanks @Neil4Real & @Mach-Lee !

VIN is: 3FMTK3R71MMA65320

@Mach-Lee , she had left it parked for a few hours while attending a show. It was at roughly 92% battery (was fully charged when she left the house). I don't believe she would have left it on, but never say never. When we jump started it, it still had 92% or so on the main battery.

The 2nd time it died, the main battery was at 100% and the vehicle was plugged in.

I read through all the posts above, but I'm frankly getting confused by all the seemingly conflicting information. I would think/hope the dealer could tell which applies after having it for 3 weeks. I've sent all of the above to the service manager, but not holding my breath.

OK, first of all you have a major problem with the OTAs not installing, they've been trying to install for months and you have 3 ready to go right now. So not sure if you have updates turned off or something?

I see they replaced your gateway module in March, and claimed CSP 22P08, any explanation there? They were supposed to just update the gateway module for 22P08, not replace it. It's possible that's a factor in your lack of OTA updates.

In terms of the event on Oct 23rd, I see no indications of trouble beforehand. Simply looks like the 12V battery went dead. My best guess is that she possibly left it in accessory mode by mistake and the battery died? It's possible you have a bad 12V battery. Did the dealer test it? Otherwise nothing major wrong and can be returned to you.

The Mach-E does take quite a stout jump pack to get going again, most of the smaller portable ones aren't powerful enough so the Mach-E must be jump started from a running vehicle with full jumper cables.

Since you're behind on OTAs I'd recommend you enable those or connect to your WiFi so they can download. You want the latest software to help with the fault handling for some of these issues.

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