I have a 2012 LR4. On 3 occasions. The doors open. Push the start button and the engine will not turn over. All gauges lights warning chimes, etc are normal. Ignition sequence will just not happen. After 15-20 mins of trying it starts and runs normal. Dealer says its impossible to diagnose without it happening while it is there. It has always eventually started and run fine. We have tried swapping keys when it happens. Neither key will work when it is being uncooperative. Any body seen this??? Dealer says never seen it.