That good ol' keeping the 12V battery perky thread repeat.

[Tuareg]

Have you had any additional electrical devices (alarms, hifi, lights etc) or modifications to the car?

 

[jon0881]

Make sure you had the SW upgrade to fix monitoring of the 12V system. Mine was effected by this and broke down. I was informed that if the battery does not recover i would be liable to pay for the replacement.

 

[pecker]

Make sure you had the SW upgrade to fix monitoring of the 12v system. Mine was effected by this and broke down. I was informed that if the battery does not recover i would be liable to pay for the replacement.

When was the update released, when was yours done ?

Thanks

 

[jon0881]

mine was done after a breakdown in December and they said it had 3 SW recalls outstanding. Nice for someone to contact me about it!

the update wasnt specifically for that but it was on the bugfix list for a module update and been fine since

 

[siteguru]

There's that word again - recall. There has only been one recall on the MG4 (for the locking in fix); everything else is a service campaign item. Dealers are just lazy and call them recalls, but they're not.

 

[Kithmo]

Thanks for that.
Also, climbing out of the car drops it out of Ready mode ?, so no nipping in for a cuppa for half an hour while it goes through the Ready/charge cycle as per p.289 of the manual. Guess I'll just have to go for a drive then ??

It doesn't have to be in Ready mode with the MG4, as soon as it powers up it's charging the 12V, so go get your cuppa. ?

 

[jon0881]

There's that word again - recall. There has only been one recall on the MG4 (for the locking in fix); everything else is a service campaign item. Dealers are just lazy and call them recalls, but they're not.

Actually thats a very good point. The arrogant lady on reception used recall and i said well why wasnt i contacted, she said its the DVLA that does that not us, take it with them. I checked and no logged 'recalls' for my car (lock in recall done).

 

[Rolfe]

The 12v battery charges when the big battery is charging from the mains. It also charges when moving. It does not start when unplugged and turned off.

After 1 week away at an airport car park my mg4 12v battery was flat.

What was the SoC of your HV battery at the time?