Hello Janubala,
Nice looking car. Hope you are enjoying it. I had same issue when bought my 2004 LS last January. Service manager at (not too local) dealer said could find key code off car no problem if I brought car into dealer. However, when I took my car into dealer, I was told would be $35.00 charge to get key pad code because Lincoln would charge them for information. I passed on that greedy offer. After some very overpriced and poor work was done to car (was worse than what I stated but not truly provable as had no pictures or written estimate) my several complaints to Lincoln about this dealer, I was given keypad code and few other small free services no charge. I would rather had bill reduced and the very pathetic lack of care taking during repair of my LS corrected. I have also read online in few sights that keypad code is on OBD II ECU case. I am not sure if correct but does make sense. Hope this is some help.
Wes B