MG5 Mystery Faults

[dragon2611]

That’s interesting and a little concerning as I believe everyone else who was having this issue had a late model pre facelift which presumably has different software.

 

[TodorRadnev]

That’s interesting and a little concerning as I believe everyone else who was having this issue had a late model pre facelift which presumably has different software.

Good morningn,

Its even more interesting that the problem appear after my first use of fast charging(75kW- "Osprey" was install few weeks ago).
I did have made balance charge yesterday morning and the problem not existing anymore, also did drive the car for 40 miles yesterday with no problem.
However on Monday 06/03/2023 I am going to call to the MG garage and requested full dignostic.
As additional information my wife told me she try to start the car without pressing the brake just before this error appears( I dont know how this can lead to that error).

Best regards Todor Radnev

 

[dragon2611]

Yep worth getting it checked, I wonder if they'll actually do any diagnostics on the HV battery or just look at any stored fault codes and clear them.

 

[TodorRadnev]

Yep worth getting it checked, I wonder if they'll actually do any diagnostics on the HV battery or just look at any stored fault codes and clear them.

We will see its a bit disappointing so far this will be second viste to the garage for the first 10 weeks, last time two of the doors stop opening from inside.

 

[aled]

It sounds like your 12v battery may be part of the problem. 11.3v is very low considering the battery doesn't really get used for much. I think failed rapid charges can cause 12v battery problems. It might be worth checking the voltage a few times to see if it is regularly below 12.1v as without leaving the lights on etc. It shouldn't really fall that low.

 

[TodorRadnev]

It sounds like your 12v battery may be part of the problem. 11.3v is very low considering the battery doesn't really get used for much. I think failed rapid charges can cause 12v battery problems. It might be worth checking the voltage a few times to see if it is regularly below 12.1v as without leaving the lights on etc. It shouldn't really fall that low.

Since the balance charge 12v battery is showing solid 12,7v and not dropping.
However I will book service for diagnostic.

 

[aled]

Since the balance charge 12v battery is showing solid 12,7v and not dropping.
However I will book service for diagnostic.

Ahh that's good. Just thought it was worth checking that it hadn't been damaged but as far as you can tell without testing it that looks fine. If you have trouble with the 12v allot of places that sell replacementa such as halfords will check the health of the 12v battery for free without obligation to buy anything.

 

[TodorRadnev]

Ahh that's good. Just thought it was worth checking that it hadn't been damaged but as far as you can tell without testing it that looks fine. If you have trouble with the 12v allot of places that sell replacementa such as halfords will check the health of the 12v battery for free without obligation to buy anything.

Thank you for the advice.

 

[TodorRadnev]

Good morning all, I did phone to MG today and next available slot for diagnostic is 27th of March, so booked that in. I will add update post diagnostic.

 

[adipit]

Hello, how fast did you received a reply from [email protected]? I emailed them monday and nothing yet, not even an acknowledgement of my request or that it will be passed to or dealt by some department.

 

[Jomarkh]

Hello, how fast did you received a reply from [email protected]? I emailed them monday and nothing yet, not even an acknowledgement of my request or that it will be passed to or dealt by some department.

Mg customer services will just refer you back to your dealer as MG technical are not customer facing.