Best mount point for an EZ Pass?

[dsimerly]

Hi All,

New 2023 Thor Quantum WS31 owner here. We want to install an EZ Pass toll transponder on our rig, and we're wondering whether the front-facing window of the sleeping area above the cab will be a good place to mount it? It looks like the overhang of the sleeping compartment could block the EZ Pass if we place it in the normal windshield location. Thanks in advance for your insights.

- Dave

 

[DavidEM]

Yes that front facing window should work fine. And once you install the transponder you usually never have to touch it again. Not sure how the batteries hold up but they do. We have had one on our SUV and it has been working well for 8+ years.

David

 

[EA37TS]

Mine is mounted on the lower part of the cab windshield just above the Mobileye camera. EZ pass has different transponder class codes for towing (blue) and not towing (black) so it does have to be changed periodically. I have never had an issue with toll booths reading the transponder.

And before you so called experts start chiming in, I posted the EZ Pass class codes documentation and requirements on a thread last year. EZ Pass toll booths only count axles on the commercial trucks with the large commercial toll transponder. Also verified by talking to EZ Pass reps in person and on the phone.

 

[The Gritz Carlton]

The scanners/readers are at rear view mirror level. That's why they say to place it near the rear view mirror. Never had an issue with them getting their money with the Super C...biggest overhead cap in the industry.

 

[16ACE27]

At the center top of windshield on our ACE under the brow. Works fine. They have a lot of "forgiveness" as far as location goes.

 

[The Gritz Carlton]

I towed a boat to the Keys once with my GMC 2500. Placed a Sunpass in the truck windshield and the boat windhiled. I got charged 4 axles twice all the way down and back. They gladly laughed and refunded the charges but know...if you're towing it will count the axles and charge one Sunpass for all of them.

 

[ChiefBob-THOR]

The EZ Tag in Texas included MH instructions. Mount in the center, about 4” up from the BOTTOM of the windshield. Puts it in about the same location as in my car.

 

[Bob Nodine]

We just lay it on the dash of our E450 and have never had an issue. We have the EZ-pass and the Sunpass. When in Florida we move the Sunpass from the motorhome to the car because there are so many places there that charge a toll.

 

[Nethers-THOR]

The scanners/readers are at rear view mirror level. That's why they say to place it near the rear view mirror. Never had an issue with them getting their money with the Super C...biggest overhead cap in the industry.

The instructions that came with mine said for c class RV’s Mount at bottom of windshield

 

[Dstimmons]

Mine is in the upper bunk window of my Quantum and it works fine.

 

[16ACE27]

The scanners/readers are at rear view mirror level. That's why they say to place it near the rear view mirror. Never had an issue with them getting their money with the Super C...biggest overhead cap in the industry.

The scanners/readers are mounted on gantries way above anybody's rear view mirror - they work off radio waves (RFID).

They tell you to place it near the rearview mirror so they don't block your field of view.

 

[Msdpok]

Have a class C, placed the ez pass at the bottom of windshield. Never had an issue whether we were towing or not….

 

[Thor 29M]

We spend a lot of time in south Florida so I have an I-pass on the class a windshield and a sunpass pro on the towed vehicle when not being towed. The reason for this is because I can't seem to remember to transfer the transponder between vehicles! When I am towing I take the towed vehicle sun pass transponder off the windshield so I don't get charged twice. I have put it in the console of the towed vehicle and it still worked. I now have to put it in foil and hide it at the bottom of the console. I'm convinced that anywhere on the windshield or console will be more than adequate.

 

[dsimerly]

Thanks for all the great info everyone!

I got pretty busy and missed a bunch of posts regarding the towing issue. We do pull our little EV runabout on a tow dolly, so do we need a different type of EZ Pass, or does the system just automatically add on a little more for the extra axles? I don't recall getting any fines so far. Thanks again for all the great info! - Dave

 

[16ACE27]

I got pretty busy and missed a bunch of posts regarding the towing issue. We do pull our little EV runabout on a tow dolly, so do we need a different type of EZ Pass, or does the system just automatically add on a little more for the extra axles? I don't recall getting any fines so far. Thanks again for all the great info! - Dave

That's an area of non-conformity.

Most states count axles

Some states require a different transponder if you are towing

Florida's Sunpass counts axles in the state. They now have the Sunpass Pro which is compatible with the EZPass states. BUT they tell you to Contact NC EZPass if you will have more than two axles:

https://www.sunpass.com/en/tolls/3plusAxleVehicles.shtml

We have the Sunpass Pro and have used it through many states towing our TOAD and all charges have been axle based. I believe NY and states to the NE are the ones that may need the multi-axle transponder. It would be nice if everyone was on the same page.

Regardless, if your TOAD has its own transponder, make sure you put it in an RF shielded bag when being towed or you will be double charged by the states that count axles.

 

[RV Driver]

I tossed the EZ Pass on to the dashboard of our Mandalay and haven’t touched it since. That was 11 years ago.

No mount of any kind, it just sits there.