Dead MME !

[ChasingCoral]

Well, the tow guy did a great job. Up on dollies and off to the dealer.
Last message on FordPass was "your vehicle is in deep sleep mode and connectivity is temporarily unavailable. Manually turn on your vehicle to deactivate this mode."
MME has been fine for 900 miles. Maybe this problem has been there all along, but I never let it sit for 5 days unused before.
Good thing I also have the Ridgeline! Will report back on what I hear.

Glad you found a good tow operator. I hope they followed proper tie-down instructions for the Mach E.

If there is a next time, try just jumping the car and see if it will run after that. You probably could have driven it to the dealership.

Sponsored

 

[ChasingCoral]

On my ‘69 Mustang, I go weeks without driving it sometimes. 12v still starts right up. Only time I had an issue was either the battery was 5+ years old or I had something drawing power. Once it was a door light switch, another time it was the brake light switch.

And this isn't a '69 Mustang, either.

 

[hybrid2bev]

Does anyone recall the exact circumstances in which the 12 volt battery wasn't being charged while the charging cable was plugged in? Something about a software issue that would disable the 12V charger when you were charging the HV battery?
I recall a newbie asking about that recently and the answer was that the issue had been resolved with an early update.
I've had the MME for about a month and didn't always plug it in at home. Never had a problem. Then left it plugged in over a week of Xmas holiday without use and now find the batt dead. It says my software is up to date (as one would hope for a new car). Maybe not.
Don

That issue was found very early, before or right as customer deliveries started. Ford management cars had 12v batteries dying while DC fast charging.

 

[Mach1E]

And this isn't a '69 Mustang, either.

It’s not?? ?

You would think they would have figured out how to make a battery powered car not kill the…….. battery.

If my ‘69 had a hole in the gas tank, I would plug the hole.

 

[jlauro]

That issue was found very early, before or right as customer deliveries started. Ford management cars had 12v batteries dying while DC fast charging.

It was happening in Feb/March last year with Level 2 charging. Maybe they didn't fix all the issues.

Doesn't help that Ford doesn't include detailed release notes on most fixes.

 

[Ford Motor Company]

Got my MME day before Xgiving and it's been fine for 900 miles. Yesterday Fordpass said something about lights being left on reducing range. Of course the lights weren't left on. It sat on charge overnight and at last contact showed 100%, 251 miles. An hour ago it appears to be completely dead. Only a faint blink of an LED when I tap the doorpost. Now waiting for tow company. Is this a unique situation>
Don

Hi Don. Could you send us a DM with your VIN and dealership info? I can look into this on my end.

 

[generaltso]

Does anyone recall the exact circumstances in which the 12 volt battery wasn't being charged while the charging cable was plugged in? Something about a software issue that would disable the 12V charger when you were charging the HV battery?
I recall a newbie asking about that recently and the answer was that the issue had been resolved with an early update.
I've had the MME for about a month and didn't always plug it in at home. Never had a problem. Then left it plugged in over a week of Xmas holiday without use and now find the batt dead. It says my software is up to date (as one would hope for a new car). Maybe not.
Don

If you’ve only had the car a month, it’s unlikely that TSB applies.

https://www.macheforum.com/site/thr...uring-the-high-voltage-charging-process.4922/

 

[dixiekidd88]

It was happening in Feb/March last year with Level 2 charging. Maybe they didn't fix all the issues.

Doesn't help that Ford doesn't include detailed release notes on most fixes.

Hi Don. Could you send us a DM with your VIN and dealership info? I can look into this on my end.

I do not complain much and am very reasonable.....but.........

The early TSB update has NOT fixed the issue on all of them. Took our first trip out of town (over 100 miles one way) to SoCal to visit fam for Christmas and got stranded 4 hours into our drive. Supercharged for the first time perfectly after 3 hours of driving or so from 9%-80% in 40 min and got back on the road.

It Lost all power at highway speed, Stop safely, AWD not available, Service AdvanceTrac etc showed up yet again. We were stranded for 3 days because of the holiday/weekend.

This is the second time the 12V battery has become an issue. The car is at a local dealer in SoCal and we returned to the Bay Area to get back to work today. It has 27k miles on it and has had ALL of the modules reprogrammed (even the one that just came out) and to have all these issues is un-reasonable. Especially one that shuts down the vehicle and makes it dangerous on the road.

I work for a dealer, so I have access to PTS and the detailed TSB info and the DTC codes that get transmitted and its mind boggling. Not to mention we still don't have Bluecruise but that's a whole other discussion.......

Build Date 10/Dec/2020

 

[Kamuelaflyer]

They may have a checklist but if the car starts don’t expect them to actually check voltage on battery, be safe and make sure they check it.

I concur. I’d personally ask them to check the 12v battery condition.

 

[RickMachE]

Sitting for 5 days shouldn’t kill a 12v.

Hell, sitting for 5 weeks shouldn’t kill it. Especially on a new car with a new battery.

On my ‘69 Mustang, I go weeks without driving it sometimes. 12v still starts right up. Only time I had an issue was either the battery was 5+ years old or I had something drawing power. Once it was a door light switch, another time it was the brake light switch.

A '69 Mustang lacks the electronics of any modern day vehicle.

My 2013 F-150 started displaying a message in its 2nd winter when I turned the key off that it was shutting down systems to save the battery. Service Manager said to either drive it more or get a Battery Tender.

Any modern ICE vehicle will prevent you from playing the radio for extended periods such as when waxing the car, because it's not a simple radio, it's Sync with a power‐hungry screen.

Modern non-EVs have large draws when not in use and will have dead 12v batteries with a much shorter period than people remember from "when I was young" days. An EV will be much quicker.

 

[Shayne]

If your High Voltage Battery is not charging your 12v, then you might have a similar problem to me. See my last post here with the technician notes. https://www.macheforum.com/site/threads/our-ongoing-nightmare.12075/post-308916

Keep in mind that my car was in the shop for 3 weeks, so be prepared!

The car was not charging the 12V in any state and it just died every time? Or was it just not charging under one or a couple of states?

I don't know what it is like to live where it gets really cold but we have an office in Greenfield Wisconsin. Apparently it gets so cold that the office staff have to start their cars during their lunch hour because if they don't, then the car might not start when they get off work at 5 pm. Must be brutal there during the dead of winter.

No save the gas just need a block heater and plug it into a 120V. The cold will not kill or freeze a healthy 12V battery. You would think plugged into a 240V with a 100 KWh pack it may be able to maintain itself also. But recommendation in this thread seem to indicate otherwise. Don't leave it plugged in too long if is cold is what I am reading here. Makes little sense and not what the car states.

I also don’t go ice fishing like they do.

But you can walk on water .... when frozen

That issue was found very early, before or right as customer deliveries started. Ford management cars had 12v batteries dying while DC fast charging.

And appears may have never been totally fixed? Dies the 3rd time and/or kills a second 12V on me I may begin to think it is not a 12V problem. Something is not right. Any insight into what is happen here?

 

[Kamuelaflyer]

And appears may have never been totally fixed? Dies the 3rd time and/or kills a second 12V on me I may begin to think it is not a 12V problem. Something is not right. Any insight into what is happen here?

The original 12v battery issues and the current problems may not be related st all beyond the fact that some 12v batteries are dying.

 

[mikeho]

The car was not charging the 12V in any state and it just died every time? Or was it just not charging under one or a couple of states?

Seems like it wasn't charging in any state. Died after about 10 months and 14,300 miles.

 

[SnBGC]

No save the gas just need a block heater and plug it into a 120V. The cold will not kill or freeze a healthy 12V battery.

No outlets in the parking lot. I doubt many vehicles up there have block heaters but not really sure. Block heaters aren't very common here in AZ. Used to be standard equipment on diesel engine trucks but that stopped around 2005 I think. I we want block heaters then we have get it with a special options package now.

 

[Crilly]

The 12 volt battery on a modern car with out a starter (ev or hybrid) should be a big deep cycle battery. I donot expect the little battery in the mach e to last much over a year. You drain it to much, it’s going to not hold a charge. You have to protect it at all times.

Sponsored