I have it on the black area to the right of mirror. I have read that you shouldn't put out on black or cross hatched areas of windshields but I have mine in those areas without issue.where do you guys stick your tolltag? i have a 2017 SE and if i do it on the bottom of the rearview mirror, it will be like in the middle of the windshield :frown
Like I said I know its not recommended but I have had it there for awhile and have used reg toll plazas and the express lanes in 3 different states with no issues.I believe they recommend that the transponder should be further over to the right in the clear glass area and not partially blocked by the grid or shaded area at the top of the windshield for best performance.
Frank 2015 XLE AWD with 20.6K miles