Wiring problems of the 2006 Land Rover Range Rover

I was told by the Land Rover service manager shon torres that the steering columns on vehicles of this manufacturing year and the years surrounding it have often had issues where the steering column will stop recognizing the key. He went on to say that many times no keys can be reprogrammed to the steering column and at that point you would have to purchase a new dyeing column which costs around $10,000. This has happens once so far and I had to purchase 2 new keys and have them programmed. One day I drove the car to work and when I for in it to leave for the night, it would not do anything when I turned the key, not even would the lights come on. #2 is an ongoing issue within the same models that there is a leak that happens somewhere near the rear wiring when it rains it causes there to be a faulty connection to the radio/navigation system and causes a short in the ability of the radio to stay on and perform correctly. This is an issue that happens often. Sometimes several times in 15 minutes time and sometimes it will happen once in 15 minutes, but it always happens. The radio will cutoff and sometimes after a few minutes come back on, or it will stay off. If you turn the radio off manually it will all of a sudden pop back on. The dvd player does the same.