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Mounting Fastrak transponder

Discussion in 'Model 3: Interior & Exterior' started by ponzu, Jul 13, 2018.

?

In SoCal, what transponder do you use on your Model 3?

  1. Windshield-mounted, top

    6 vote(s)
    37.5%
  2. Windshield-mounted, driver side corner

    1 vote(s)
    6.3%
  3. Windshield-mounted, passenger side corner

    1 vote(s)
    6.3%
  4. Front license plate holder, original Tesla

    2 vote(s)
    12.5%
  5. Front license plate holder, third party

    0 vote(s)
    0.0%
  6. Inside the car, no issues with The Toll Roads

    6 vote(s)
    37.5%
  7. Inside the car, some issues withe The Toll Roads

    0 vote(s)
    0.0%
  8. No transponder, pay toll by plate

    0 vote(s)
    0.0%
  9. No transponder, don't use toll roads

    0 vote(s)
    0.0%
  10. Other

    0 vote(s)
    0.0%
  1. ponzu

    ponzu Member

    Joined:
    Apr 19, 2018
    Messages:
    283
    Location:
    Southern California
    The Toll Roads (SoCal) advised me that Tesla windshields block the regular transponder, so I have to use the external. I ordered the external and it got here. It's bulky and, despite my initial impression, goes on the front plate bracket, not the back. Good thing, too, because that's where the backup camera is.

    Some people posted photos that show it mounted. They claim it looks cool, I would go with "inoffensive".

    It does appear that the transponder is screw-on, and the front plate holder is a glue-on. Is that correct?

    How have others gone about it? Buy a third party plate holder that screws on? Drill holes in the Model 3? (Sacrilege!) Can the transponder be mounted to the Tesla's own bracket somehow?

    Also, it appears that the Toll Roads people are wrong about the windshield, that their info pertains to S, but not to 3. True?

    Did you mount your transponder on the windshield? If so, top or bottom corner? Can we see photos? Sounds ugly, but one gets used to anything, even carpool stickers.

    Did you place the transponder inside the car somewhere? Not what The Toll Roads requires, but I seem to have gotten away with it for 10 years with my MBZ SUV and did not notice any fines or overcharges. Sometimes it beeps, sometimes it does not. The license plate is key.

    They told me I can be charged by license plate anywhere but 91. I don't go on 91 all that often.

    How did you go about resolving the transponder conundrum for yourself?
     
  2. pavankp

    pavankp Member

    Joined:
    Apr 24, 2018
    Messages:
    65
    Location:
    San Francisco, CA
    I have mine mounted inside the car on the glass roof at the very back of the front glass panel of the roof. It works flawlessly through all Fastrak locations.
     
  3. T34ME

    T34ME Active Member

    Joined:
    Mar 31, 2016
    Messages:
    2,104
    Location:
    Inland Empire
    Is this a model 3? Could you please post a picture.
     
  4. ponzu

    ponzu Member

    Joined:
    Apr 19, 2018
    Messages:
    283
    Location:
    Southern California
    Not one of the recommended/approved placements, correct? They would have you believe that the transponder has to be visible in the photo they take in case there is a disputed fine/charge. Probably BS.

    Any and old photo of all possible placements any of you have opted for will be appreciated.

    P.S. I realized that the plastic stick-on Tesla front plate holder has two screw holes for mounting the license plate (duh!). Those holes will fit the transponder. So maybe it's not that much of an issue for me after all. Still, it would be good to learn what more inventive minds have come up with.
     
  5. ericbs

    ericbs Member

    Joined:
    Jul 31, 2017
    Messages:
    48
    Location:
    so cal
    I mounted mine in the Tesla recommended part of the windshield and have not had any issues whatsoever. I did however request a new transponder when I got the Model 3 so maybe that helps? The new ones the TollRoads send are smaller. If interested, let me know and I'll post a pic.
     
  6. Phillyasian

    Phillyasian Member

    Joined:
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    Location:
    Philadelphia
    #6 Phillyasian, Jul 13, 2018
    Last edited: Jul 13, 2018
    I have the larger East Coast EZ Pass Transponder. Instead of using the heavy duty Velcro-type mounting system, which would require attaching the strip onto someplace on the car, I use a suction cup wire bracket to hold the transponder. It's what I used in my previous car and had no problems EXCEPT in extreme temperatures (Very hot or very cold) where the suction cups would sometimes fail and the whole thing falls down. When it came to my Model 3 I DID NOT want to mount it in the location suggested by Tesla (which is also where I mounted it in my previous car) since if it fell I was concerned it would either 1) Hit the display and damage it and/or 2) hit the wood trim and damage that. By mounting it on the top right corner on the passenger side windshield if it does happen to fall it would miss both the wood trim and the monitor. It is also out of the way and the location works perfectly fine.
     
  7. ewoodrick

    ewoodrick Member

    Joined:
    Apr 13, 2018
    Messages:
    673
    Location:
    Buford, GA
    In Georgia, we use one of the passive transponders. It is basically a 3x1 label size. I've got it mounted to the right of the windshield camera on the inside and it works great. It is out of driver's view.
     
  8. pavankp

    pavankp Member

    Joined:
    Apr 24, 2018
    Messages:
    65
    Location:
    San Francisco, CA
    This is a picture of the Fastrak placement I described above... it is out of sight behind me, and works perfectly every time.
     

    Attached Files:

    • Informative x 2
  9. dek526

    dek526 Member

    Joined:
    Jun 5, 2018
    Messages:
    93
    Location:
    Los Angeles
    though not what is stated by law enforcement but I was on the 110 this past weekend and just had the transponder sitting on the dash with no issues
     
    • Informative x 1
  10. JohnC

    JohnC Member

    Joined:
    Mar 31, 2018
    Messages:
    63
    Location:
    San Diego
    FDC90513-08ED-49F5-B482-19A71EDC63EA.jpeg Works fine for me.
     
    • Helpful x 1
  11. JPP

    JPP Active Member

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    SF Bay Area, CA
    Anybody try the back side of the touchscreen?? That would flip the transponder front to back, so presumably the antenna would be on the 'wrong' side.
     
  12. gambit48

    gambit48 Member

    Joined:
    Aug 1, 2017
    Messages:
    727
    Location:
    NorCal
    Unless you plastidipped it black, it would look more weird than just in the bottom corner of the windshield.

    Sticking it up at the back of the front glass roof is an interesting idea as it'd be really hard to notice. I'm just hesitant cuz I tinted that area and I don't wanna stick anything to it.
     
  13. Phillyasian

    Phillyasian Member

    Joined:
    Feb 12, 2018
    Messages:
    78
    Location:
    Philadelphia
    That's why I use separate suction cup bracket holder in order NOT to have anything permanently attached to the glass.
     
  14. gambit48

    gambit48 Member

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    727
    Location:
    NorCal
    It's 105 today and we haven't hit the hot part of summer yet. Suction cups tend not to fare well around here. Otherwise, I'd totally be up for a non-permanent solution like that.
     
  15. WallyP

    WallyP Member

    Joined:
    Mar 4, 2018
    Messages:
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    Location:
    Orange County, CA
    The FasTrak conflict with Tesla glass was true of their old transponders and the Model S. But this has been fixed long ago, and the new smaller ones do not conflict with my Model 3.

    I've attached mine in a compliant manner, top of windshield, partially obstructed from driver view. It has worked flawlessly for the six months I've had it there.
     

    Attached Files:

    • Informative x 2
    • Like x 1
  16. ponzu

    ponzu Member

    Joined:
    Apr 19, 2018
    Messages:
    283
    Location:
    Southern California
    Boy, there are almost no good options that are compliant and non-ugly. I mounted mine on the front plate holder and boy is it bulky. And ugly. Bulgly.

    upload_2018-7-20_8-47-11.png
    When the black vanity plates come it, it may become slightly less noticeable. I will give it a chance and then start looking into inside mounting options.
     
  17. ponzu

    ponzu Member

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    Apr 19, 2018
    Messages:
    283
    Location:
    Southern California
    #17 ponzu, Jul 20, 2018
    Last edited: Jul 20, 2018
    In truth, here in SoCal, one does not need a transponder at all times as long as the licence plate is registered. The Toll Roads person told me I cannot go on 91 without a transponder. I don't go on 91. Well, I will next week, but for that I could probably place an indoor transponder on the dash.

    Something on The Toll Roads site says that you need the transponder to pay the best discounted rates. I may have misunderstood that, or they may have put that in as an extra enticement. I ran this by the Toll Roads person, and she said as long as my plates are registered, I will get the discount with or without the transponder. This is corroborated by the fact that, according to my statement, one of my transponders is not working, and all tolls are paid by plate, and they show a $1 discount.
     
  18. gambit48

    gambit48 Member

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    Messages:
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    Location:
    NorCal
    That's my question. The site was saying you want get a discounted carpool rate (some bridges in NorCal still charge for carpool, but give you a discounted rate) or the EV solo (can go toll free on some areas). So, they say you need the Flex transponder and have it set to the EV (or whatever appropriate) setting.

    The Flex is just that little rectangle compared to my old giant square transponder, so I'll probably end up sending all my old ones in eventually to get the little Flex ones just for their size alone. I never used the transponders before because I figured the plate was good enough, but didn't know about the discounts and stuff until I started looking into it for the Model 3.
     
  19. JPP

    JPP Active Member

    Joined:
    Feb 4, 2013
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    2,335
    Location:
    SF Bay Area, CA
    In the SF Bay Area you have to have the Flex transponder for the 'pay-to-play' HOV lanes. The old non-switchable ones (including the license plate ones) are no good. Maybe in SoCal you are OK....
     
  20. TT97

    TT97 Member

    Joined:
    Aug 6, 2017
    Messages:
    858
    Location:
    Los Angeles
    Same in SoCal (or at least for The 110). Switchable transponder with settings for 1, 2 or 3 occupants (2 different rates plus free for 3+). For now, if you have HOV stickers, you can leave the transponder to 3.
     

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