Hello everyone I'm having a issue with 2007 xj....it had new battery and altornator but battery light was still on.....last night I took the car for a drive and it went in to meltdown all warning lights came on lost power steering lost power....pulled over turned the car off and when I went to restart it it had no cranking at all and all warning lights are on battery is charged fine...I'm thinking it may be a fried ecu but any advice would be apriciated thanks in advance craig.

Check the ground points behind the headlights as a first port of call. They may look ok but, they corrode from the inside out, show them a spanner and they may well crumble.

That's exactly what it did but I repaired that last week