Interference with Phone GPS and EZ Pass transponder

Not that this really helps, but you should know that when using CarPlay or Android Auto, your phone will strongly prefer to use the car's GPS. So any shielding or interference around your phone itself shouldn't matter at that point as long as the CarPlay/AA connection to the car keeps working. If you're having this issue in CarPlay nav, try switching to the native nav just to see where it thinks you are - maybe the car's GPS module is acting up. If you're awaiting AA... hang in there 😬
 
I have the wandering GPS on my CarPlay sometimes, but I also experience that sometimes in our Subaru - usually it’s when my iPhone is still in my pocket. Once I pull it out and stick in a cup holder or something, GPS gets back on track.
Also, I have my “GoodToGo” sticker (WA’s version of EZ Pass) installed just below the rear view mirror assembly, and I’ve never had a problem with it working.
WA Resident also. I have regular 2025 with regular windshield and my pass works everyday.
 
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