Teleks
Well-Known Member
- Joined
- Feb 25, 2023
- Threads
- 10
- Messages
- 84
- Reaction score
- 74
- Location
- USA
- Vehicles
- 2021 Mach-E GT Performance Ed, 2014 Fiesta ST
- Thread starter
- #1
Yesterday I got a warning that my 12V batter is low (see picture) and I'm still trying to figure out what happened.
Over the weekend I charged my Mach-E for 20h on a 110V outlet at 1 kW, then went on a 3 hour car ride home while also supercharging it half way home. I would assume that that's actual ideal case for the 12V, isn't it? Slow charging for a while, long car ride... the 12V should have been pretty much full. ?
Then on Monday I took the car for a short ride, and something must have happened with the lights. Just now (while writing this), I found out, I was experiencing this problem: https://www.macheforum.com/site/thr...ocks-lights-are-always-in-auto-setting.11499/
"Headlamp switch problem"
I do remember that Monday night I noticed the headlamps stayed on for 10-15 minutes, but eventually switched off. Similar to the author of this other thread, I assumed it must have been because I was too close with the key or something. The Mach-E must have been in this buggy-mode for around 24 hours and I noticed 1 or 2 more times that the headlamps stayed on for a while after I got something out of the car.
Fast forward to Tuesday night (end of said 24 hours) and I get the 12V battery warning.
My question is: How can the 12V battery be so low? Like I said, it should have been in pretty good shape after the weekend. I don't think the headlamp bug had the headlamps on for much more than a total of one hour. Is that enough to drain the 12V completely? Or would that bug have affected the battery in some other way?
Over the weekend I charged my Mach-E for 20h on a 110V outlet at 1 kW, then went on a 3 hour car ride home while also supercharging it half way home. I would assume that that's actual ideal case for the 12V, isn't it? Slow charging for a while, long car ride... the 12V should have been pretty much full. ?
Then on Monday I took the car for a short ride, and something must have happened with the lights. Just now (while writing this), I found out, I was experiencing this problem: https://www.macheforum.com/site/thr...ocks-lights-are-always-in-auto-setting.11499/
"Headlamp switch problem"
I do remember that Monday night I noticed the headlamps stayed on for 10-15 minutes, but eventually switched off. Similar to the author of this other thread, I assumed it must have been because I was too close with the key or something. The Mach-E must have been in this buggy-mode for around 24 hours and I noticed 1 or 2 more times that the headlamps stayed on for a while after I got something out of the car.
Fast forward to Tuesday night (end of said 24 hours) and I get the 12V battery warning.
My question is: How can the 12V battery be so low? Like I said, it should have been in pretty good shape after the weekend. I don't think the headlamp bug had the headlamps on for much more than a total of one hour. Is that enough to drain the 12V completely? Or would that bug have affected the battery in some other way?
Sponsored
