my first thought is to check that the child safety switch is in the proper position.
The latching mechanism completely froze and the gear drive assembly stripped.Sorry to hear that! Did they tell you what parts failed and why? I had asked my dealer about recommended maintenance for the doors as the owner's manual only covers the manual doors and was told that they didn't have anything to recommend.
Was their an option on the wagon?I wouldn't have bought power doors in the first place. They ain't exactly heavy to roll.