My 2005 E320 (CDI) power trunk has stopped working. It stopped working after sitting outside in 20 degree weather for 5 days in Chicago. (It is normally in an unheated garage.) When I open the trunk, it unlocks and the lid pops open only 4 inches. The light inside the trunk is on at this point. I now have to manually lift the trunk to the open position. (Not an easy task. I seem to be fighting a motor or other friction) When opened manually, the trunk light goes off, the power close button goes off, and the emergency release button is glowing green. This seems to indicate the trunk lid thinks it is closed.

To close the trunk lid, I either have to manually muscle it down and slam it, or close it to within 4 inches of latching (at which time the trunk light comes back on, as does the power close button), and use the now working power close button, risking sandwiching my fingers in the trunk.