step in. feet on both accelerator and break held in then just press the start button. dont hold in like you would normaly to start it. then after the needles sweep. the odometer shal cycle through each fault code. bobs your uncle hope this helps
not sure keyless entry works on the astra, do you need to put the key in at all?? like in the BMW'S and then push stat...try putting the key in, ignition, brake and accelerator pedal pushed down..should do it.