Hi thanks for that. That was the first thing the RAC man did. Sorry to say it did not work but I will now add a 10mm spanner to my toolkit. It has gone away on the back of a recovery vehicle to MG.
Is the car completely dead altogether @Reggie 838 .
I have no idea @Kithmo.
They must have data from every car - the software versions, saved on a Chinese server. But I guess they don't consider this part of the service information and more so they want to keep it hidden/not for customers to see.
That is one way to get awesome Miles per kWh.....
which I understand should increase in time to the 450v , I also got the same fault code “slow charge the battery” Is this to be expected, because the voltage is low? I’m concerned that it’s a fore warning of another HV battery shut down 
I think you should have insisted on the dealer giving you a courtesy car whilst they carry out the charging as per MG memo. They can claim the cost back from MG as it was due to duff BMS update.Well, I’m pleased to be able to say my dealership-Masters Group Croydon has got me up & running again.
However I couldn’t afford it leave it with them to complete the re-balancing of the batteries. I’m going to be doing this by putting it on my granny charger every night & allow it the 2-3 hours balancing it should now be doing following a full charge.
Although, I’m a little perturbed as this morning when I checked the voltage achieved - only 427v
It won't be balancing for 2-3 hours after it's charged full, if you're that far out, it'll balance for 10 hours (max) at a time. You're going to need something like 230 hours of balancing to get those missing 23 volts backWell, I’m pleased to be able to say my dealership-Masters Group Croydon has got me up & running again.
However I couldn’t afford it leave it with them to complete the re-balancing of the batteries. I’m going to be doing this by putting it on my granny charger every night & allow it the 2-3 hours balancing it should now be doing following a full charge.
Although, I’m a little perturbed as this morning when I checked the voltage achieved - only 427v
At least it’s recovering in the potentially warmer months where the lost range will not be perhaps as noticeable until your battery is back up to the correct levels...I’m guessing that the voltage difference was the reason why the battery did a complete shutdown, but as many have stated one is never told by the dealership.
Yes it’s going to be a while before I see the desired 450v….but up 1v on yesterday to 428v, so heading in the right direction
Before the January update, my fully charged voltage was 438 volts. It had taken a couple of months of charging and balancing to bring it up to 449 volts. Range is better, in the region of 170 miles or so, and with summer temperatures (we hope) I expect that to increase slightly..I’m guessing that the voltage difference was the reason why the battery did a complete shutdown, but as many have stated one is never told by the dealership.
Yes it’s going to be a while before I see the desired 450v….but up 1v on yesterday to 428v, so heading in the right direction
It's the amount of time actually balancing that is the factor.So taking into account that it took your car to gain 10 volts in 2 months, I’m going to be looking at 4 months to get mine up to the full voltage…..I didn’t expect it to take that long
I believe when the car will get too around 10 hours of trying to balance the pack, it will call "Time Out" and give up and stop.That’s what’s I was working on too, but I’m not sure if it’s doing a 10 hour balance? Each morning so far the stead light showing it is balancing is out. So complete? I am however hopeful that I will see 450v one morning, cause I love my MG EV
