Is the key the 4 sided type with individual cuts along all 4 edges?
Have you tried lubricating the lock barrel with some very thin oil, i imagine they have barely been used throughout the years, that type of lock barrel used to spin as you describe even when brand new when we had to lock/unlock with key before pdi fired up the remotes.
It could also be that your key has simply worn out and is not pushing the lock pins back fully in the doors, have you got another key?, if not it might be time a new one from the dealer, next question do you still have the keycode card?
Edited by gordonbennet on 15/05/2012 at 21:41
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