hi people, need your expert knowledge as always!
Got astra 1.8 coupe convertible 03 plate, and unable to start.
Attempt to start, dash lights as normal, but nothing happens at all?
Measured battery volts @ 7.2V, when ignition turned goes down to @ 5.5V. Looks like batts knackered? When close drivers door window doesn't fully go up? Any suggestions.
Does anything need resetting when changing battery?
Any assistance much appreciated.