The antenna for the remote start is located in the rear view mirror. I had an issue with the range and narrowed it down to my EasyPass transponder, which I had mounted on the windshield behind the mirror.
Since the transponder was new, and my wife's transponder was several years old, I transferred it to her vehicle. Then I turned her transponder in for one which mounts to the front license plate. I didn't want it out in the open where it could get damaged or stolen, so I mounted it behind the grill.
The range has improved, I would estimate it at 75 yards, maybe 100 yards on a clear day with no obstructions. I wonder if there's a way to upgrade the antenna? It seems like anyone who has been unhappy with the range, has simply upgraded the entire remote start system.