Lucky me, my car went crazy about 400 yards from gas station and I could drive it there.
Problem started with all dead gauges and right turn signal and brake lights on. Engine was barely running so I could drive to gas station. I removed key, head lights were still on, I couldn't turn them off, had to remover trunk fuses one by one to turn them off.
It didn't start anymore, no clicks.
I just unloaded the car from tow dolly, didn't try to diagnose it yet.
Any ideas? thanks.

03 S model 3.0

 

Just about could be a bad battery - check voltage is 12.5 or so, with engine off.

Next check for damp/water in trunk.

Next hope it isn't a damaged loom behind the front bumper.

 

Thanks, V8.
What is loom? Wires?

 

Check for a bad / corroded earth connection... I've had similar symptoms with other vehicles, its not just a Jag concern.