The mounting location must provide direct line of sight communication between the transponder and the toll facility s overhead antenna.
Roof mounted ipass transponder.
I pass mounting instructions ai author.
Many of today s luxury and higher end cars use metal oxides in their windshields and that diminishes the signals from regular transponders.
If the license plate option is unviable then a roof mounted transponder can be utilized.
Roof mounted transponders must be mounted on the roof of the vehicle.
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.
In such cases special mounting instructions must be followed or an exterior transponder.
Oct 14 2014 messages.
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The mounting location must provide direct line of sight communication between the transponder and the toll facility s overhead antenna.
Apparently the new version of the model 3 manual has information on where a transponder should be mounted.
The strips do not leave a residue on your windshield.
The right side of mirror mount housing.
Roof align the transponder on the windshield behind the rearview mirror at least one inch below the metal roofline and one inch to the right or left of the mirror post.
Fme transponders cannot be used where local regulations prohibit externally mounting transponders 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.
Mounting strips are available at no cost at all customer service centers and every manned toll plaza.
Attached to the glass up against that pillar between the roof and rear window glass.