I’ve had the battery checked - it’s OK, but about 1/2 charged. Garage charged it for me. Still getting message battery low please charge engine. Help!! 

Hi Folks, in all of these cases the fault does not lie with the car but the petrol pumps which have their choke cut off pressure set too low. The fault should be notified to the attendant in order that he can log it as a fault for rectification during the next pump maintenance cycle. I appreciate it is frustrating and that their are some "apparent" tricks to circumvent the isue, but believe me, this is a well researched issue and it is always the pump at fault. N6 JMX

Thank you for the information. Just bought a beautiful XK 2011. And she is having the same issue, and she had pretty much set for 2 years.

Great suggestion, thanks!  

Hi Steve, unless there is a fault developing in the steering rack, which is unlikely, I would jack up the front end and undertake the lock to lock reset with nil load on the front end to see if that makes any difference. If the steering position sensor goes, then the input feeling is very different. The turn in feels light and there is no self centring return, i.e. you need to manually rotate the steering wheel back to the straight ahead position. Whilst the front end is off the ground, check the play in bearings and bushes just to be sure. Otherwise, enjoy the wonderful world of Jaguar motoring. N6 JMX