My 2007 5425 has developed an annoying issue. When I start it the 4 wheel drive light shows on the dash, no neutral light. With no neutral light the tractor won稚 move. The 4 wheel drive switch is not turned on. After 2 to 5 minutes the 4 wheel drive light goes out an neutral light comes on and everything is good to go. It must have something to do with a solenoid. I have talked to several John Deere dealers and non have a clue. Any help would be appreciated.