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Coated windshield impacting door openers and EZpass
- Thread starter cinergi
- Start date
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- Model S User Interface
strider
Active Member
So looking at Steve841's picture... my car is different. Can't take a pic at the moment as the S is the wife's daily driver and she's at work but in our car to the right of the mirror there are just black dots. It's not solid black like in Steve's picture. Our Fastrak (uses batteries) works just fine in that area (I hold it up against the windshield). Obviously Tesla changed something and maybe the dots allow more signal through?
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I think sublimaze1 is going to try it this weekend - he's posting in the Sig vs GP Nosecone thread.
PattyChuck
Model S P100D, Model X P90D
Mine has the dots and nothing works there at all (have tried 3 different ones).
Also tried Steve841's method yesterday, with no success.
Electric Machete
P#3820
I have the SunPass mini in my current car and from the driver's seat, I cannot see it since it is placed just lateral to the rear view mirror stalk. Plus the Mini will not work after it is removed. Great for security, not so great since I might have to try it out in different locations to find the sweet spot. My development also uses an RFID chip on a tiny sticker to get me through the gate. Ahhhh, the burbs.
Has anyone in Florida tried the SunPass Mini yet?
ChadS
Last tank of gas: March 2009
In the Seattle area we have a "Good To Go" pass that uses RFID. I stuck it where they recommend; on the windshield a couple of inches below the rear-view mirror. It works fine.
epley
P85 VIN 693
Doesn't work for us in Washington State, either. I hate the ugly license plate bracket mounts. I'm going to try the motorcycle headlamp version.
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Weird because it doesn't work for me or another local...
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Weird because it doesn't work for me or another local...
Electric Machete
P#3820
Thanks for that info. It is beginning to appear that the windshields seem to vary from car to car. Some people are having success and others not.
You said it is a few inches below the mirror. I thought Tesla recommended it lateral to the stalk toward the passenger side.
ChadS
Last tank of gas: March 2009
I meant I put it where GoodToGo recommends you put it. In the center of the windshield, two inches below the mirror mount. It has worked fine for us so far.
But, my wife hasn't taken the car to Seattle very many times. Given epley's report, I'll have to keep an eye on the GoodToGo reports to make sure they keep detecting it.
I don't know about where you live but camera based plate readers are typically more reliable than the RFID tags. In Atlanta they are using camera based plate readers as the primary method, and RFID tag reads as a secondary method of determining your car.
They stopped giving out powered RFID tags when they did this and moved to the sticker passive variety. They use the same technology as Texas's EZ Pass, but they are not running on compatible systems.
Electric Machete
P#3820
In Florida they will use the license plate as a backup in case they miss the RFID tag. My main concern is toll booths that have an automatic gate that should go up if it detects the SunPass. These are becoming fewer as time goes on, but for now I still have to deal with them occasionally.
tdelta1000
Active Member
Here's another post with a possible solution that I came across.
Mounted-MA-EZ-Pass-behind-front-grill-here-s-how
Check it out.
Mounted-MA-EZ-Pass-behind-front-grill-here-s-how
Check it out.
Electric Machete
P#3820
I might use that option to mount my development's RFID gate pass if I find it doesn't work on the windshield.
However in Florida, I am eligible to use the HOV lane as well as 95 Express. 95 Express is two lanes that require a fee to use it unless you are a registered carpool or hybrid/electric vehicle. In the case of the Model S, I would need to shield my RFID tag/SunPass as I pass through to avoid being charged, so I need access to the pass. Once the pass is shielded they record the plate and I will be in the database as an electric vehicle, thus won't be charged for using the lanes. It's a convoluted process no doubt, but that's Florida.
Charged_Up
Member
For what it's worth, I finally found a place that the SunPass (in Florida) worked - at least a couple of times. It is right below the mirror mound (directly below the center) with the pass just into the clear part of the windshield below the black part of the mirror mount.
Regards... Keith
Regards... Keith
Are you saying that the whole pass is in the clear part, or just a piece of it is in the clear part? Also, can you describe the orientation of the SunPass (and which type you are using)?
steve841
Active Member
I'm not sure that's what he's describing. Your picture is off the windshield, and it's not clear from his description whether his is or not. Also, he didn't describe which SunPass he is using. In any case, I have matched your picture several times and gotten nothing. I'm trying to figure out whether or not I have a defective windshield or not.
Charged_Up
Member
So a few months ago I found that the the black spot area beside the mirror worked well for the VA EZ Pass. Then I cracked the windshield and had it replaced. That spot no longer works. Testing done at the VDOT location in Herndon. So correct, some windshields do and some don't. In re-reading the thread, I never tried the area below the mirror, will try that sometime.
Charged_Up
Member
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