I have a 2014 XK Signature convertible. The car will not lock when using the smart key or the door button. 2 warning beeps indicate the car is not locked and the mirrors do not fold. But it is intermittent, maybe 1 in 15 attempts sucessfully locks it. Owners book says it may be doors, boot, bonnet, roof or petrol flap not properly closed. I have checked and all seems okay.
Any suggestions?
JohnF