The battery light has been coming on recently after a few miles. Last night it came on again, followed by the radio cutting out, the power steering light and a loss of power steering, then the ABS light, then the seatbelt light and finally the spanner light... Just got home and can't start it this morning - battery nearly flat. It's an 07-plate CDTi 150.

Checked the drive belt and it looks ok and seems tight enough. Any thoughts on what else to check / what it could be pse ?