12v Battery charge very low. The infortainment system will be switched off.

[Lindsc]

I just bought this 21 plate T6, and after a 300 mile journey this message came on when i turned engine off.
Do I need a new battery? Its still under warranty so Ill need to be quick!
Could it be something else?

 

[Vanderlust]

If the starter battery is low you will get this message. I would have thought that after a 300 mile journey the battery should have recharged so may be goosed perhaps after being deeply discharged. If you have a volt meter that would confirm the message is correct and then have the battery checked/replaced.

 

[Dellmassive]

As above. Most probably knackered.

But test it first.