Oct 14 2014 messages.
Roof mounted ipass transponder.
Many of today s luxury and higher end cars use metal oxides in their windshields and that diminishes the signals from regular transponders.
The mounting location must provide direct line of sight communication between the transponder and the toll facility s overhead antenna.
Fme transponders programmed for rooftop must be mounted on the roof of the vehicle.
Roof mounted the roof mounted transponder is recommended for large commercial vehicles such as trucks buses coaches and rvs.
Roof mounted transponders must be mounted on the roof of the vehicle.
I pass mounting instructions ai author.
Fme transponders cannot be used where local regulations prohibit externally mounting transponders on the roof of the vehicle.
In such cases special mounting instructions must be followed or an exterior transponder.
The mounting location must provide direct line of sight communication between the transponder and the toll facility s overhead antenna.
Mounting tips select a mounting location within 4 inches of the centerline as measured from the right and left sides of the vehicle.
Mounting strips are available at no cost at all customer service centers and every manned toll plaza.
Not in my line of sight while im driving and still works fine.
Apparently the new version of the model 3 manual has information on where a transponder should be mounted.
Properly install your transponder to ensure the transponder is read accurately it should be properly mounted on the vehicle s windshield using the removable mounting strips.
The right side of mirror mount housing.