I usually lease a car, but this time around I decided to buy the car when the lease was over. Now I own a Lincoln Navigator 2009. After 50000 miles the car started to have major problems. Recent problems are running board closure on passenger side ( I already replaced the motor on driver side), tail gate closure, high pitch whistle noise when back up, and now extreme powertrain surges both at stop and drive.
I have taken the car to the dealer for service for problems not including the surge and nothing was fixed. All I heard were excuses.Today I took the car for the service again and the supervisor of the shop was riding with me to see if he can identify the problems. Surge didn't happen while he was driving, and he said the whistle is normal occurrence in Ford / Lincoln cars due to brake pad materials. I informed him that when pulling out of the garage, the whistle is so load that can wake up the neighbors. He said we don't make the components and they are supplied to us by Ford. I left the car for overnight inspection and although I have the extended warranty, they didn't offered me a loaner car. Hope they can at least fix the problems.