Question for help about the Low 12V Battery warnings.

fx860e

Standard Member
Joined
Feb 10, 2026
Messages
44
Reaction score
29
Points
16
Location (town/city + country)
Llanrwst
Driving
HS PHEV
Hello all, hope you don't mind putting this question out to any who have a HS PHEV.

I've posted my findings about my 12V Battery in a post called 'What happens to the 12V Battery when left for two days....'
I thought (wrongly) that my findings could help owners understand why after a day or so a message pops up warnings of a low voltage for the 12V battery.
After communicating with @Totti1001 they informed me that my readings were not normal and we agreed that it should go to the garage.
I've made an appointment for late May, but before I go I am interested in finding out if mine is unique, or are there others that have the same problem.

If any owners wouldn't just mind saying if they have experienced 'Low voltage warnings' after one of two days. Or finding, when you switch the car on, that the screen comes on immediately or then at other times you have to wait 30 seconds or more for the car to wake up.

Thanks to any who can answer as it may be helpful to know where I stand when taking the car to the garage.
 
I have the exact same issue but it usually goes away after a run in to work (23miles and 30mins or so). Its fine after that until the weekend when I do some short journeys, then it comes back.
This current weekend though the issue came up and didn't go away after the Monday commute to work. However, it didn't appear on the Tuesday.
It's difficult to take an intermittent problem to the dealer if the problem isn't there at the time so I've videoed as many instances of it happening as I can to provide evidence when I eventually do take it in.
 
Upvote 0
Support us by becoming a Premium Member

Latest MG EVs video

MG4 EV Refresh + NEW MG4 EV Urban - UK arrival dates, prices, specs (2026)
Subscribe to our YouTube channel
Back
Top Bottom