Depends on the ECU as to how it behaves on a battery off.

As for the codes if you have a hard fault it'll be back.

Could be a multitude of causes.

If under warranty why drive in this condition just ask your dealer to collect it, if you conked out in a dangerous place you'd regret it.


Mark - No Longer driving
Archie the Old English Sheep Mog...........
2010 Roadster 3.0 V6 (S3) wink