I don't believe there is a TSB that calls for replacing the LVB. But that doesn't mean it won't be replaced if it won't hold a charge.
Is this the MME version of a dashboard statute of St. Christopher? ? Just ordered mine - thanks for the tip!
Hello, Judson!Today, my Premium SR AWD of 1 week suffered a complete meltdown (or I guess I should say “freeze up” given today’s 3 degree high temp) in the middle of I-35W in downtown Minneapolis. I was at 75% charge and everything was functioning normally, I was driving under 20 mph in congestion, and then all hell broke loose when I came to a stop. The first thing I noticed was the big screen shutting down to conserve power, and then the fact that the motor had turned off and the dash was flashing every possible error / warning message at me. I thought, okay, let’s shift into park and then restart, but pressing the start / stop button did nothing - and now I couldn’t shift into neutral or anything else. The only thing that seemed to function was the OK button to read the next failure message - and they spanned “rear door ajar” (it wasn’t) to “parking brake fault” (I hadn’t applied it). Long story short: I called the state patrol, they summoned a flatbed tow truck, and we hauled my overwhelmed car back to the dealership where I signed purchase papers the week before. We couldn’t even get the driver’s door to latch - is there a “latch”?
I know there are several threads about electronics failures similar to mine, and I’ll comb through those for hints. But I hope you’ll also share your thoughts and/or send links to thread that you think might be relevant. I want to be ready to advocate with the service department starting tomorrow, since they were all but closed when we arrived late this afternoon.
Here are a couple of screenshots that I just took - thanks in advance for your help!
Since mine shipped 11+ weeks ago and has been sitting in a rail yard for 41 days now, I’m absolutely demanding a new 12V!
That's not how it works. If the 12V battery tests fine, they're not just going to replace it.
@Ford Motor Company when you’re finished helping Judson, if you could nudge my Mach-E to my dealer for delivery, you’d be a real miracle-worker! (VIN 3FMTK3R74MMA61102) ?
Highly unlikely it will test fine. Nighttime temps at the rail yard it’s been parked in for the past 41 days average between 18-25° F.
What is the voltage of a 12V battery in a car?
That doesn't mean that it's likely the 12V battery is toast. Even if it arrives with a discharged LVB, it's likely they can charge it back up and it will be fine. If it won't hold a charge, they'll have to replace it. No demands should be necessary.
This is a good starting point, but it's a little misleading with the MME because if there's any load on the system (like the frunk light), it will measure pretty low. And even at rest with no load, the voltage seems to get pretty low before the DC/DC converter kicks in, so low voltage alone doesn't necessarily mean the battery is unhealthy.
jgdarden.com/batteryfaq/SoC.xls
