Hi there...I'm wondering if anyone has a solution for a new problem on my XC70 (06) - the left rear passenger door lock sounds as if it is activating on and off but actual door lock button does not move up or down. I did ck the child-lock switch and it is not on. All other door locks work fine! Anyone have a shop guide to removing the inner door panel and getting to the mechanism? No doubt it is a simple soultion but I don't want to ruin the inside panel trying to take it off! Any pointers will be greatly appreciated.