Nope. My adapter was plugged into my Maxima for about 2 years non-stop with no ill effects. The wife's Highlander is a little different, we ended up breaking the ODB-II plug mounting clips by accidentally kicking the dongle. It still works but it clunks around when you go over a bump. Read more
Looks like someone was using a quarter instead of a penny...
Wrong Class 5 > Class 5-1600.
Another variation: when packing up leave the doors to the individual rooms open until you have "cleared" them. Then close the door to that room. Might be an ocd thing too but I also make a sweeping motion with my hand over drawers, outlets, cabinets as a way to mentally say done. Read more