Ignition lights come on but engine doesn't crank.
Its a key ignition.
The car has been left a couple of weeks.
When jump leads attached to donor car, things look normal but car won't start
I have just looked into this, but I am reluctant to give it a go, as why would the starter fuse stop the car from unlocking with the button on the key and stop all the internal lights etc unless the car is attached via jump leads?