GPS & EZ-Pass don't co-exist peacefully

 

I posted this in a thread, which was not relevant, so I decided to move it here.

Obviously Garmin nuvi and EZ-Pass tags are not working well together. Seems that when the nuvi 350 is on in my car the EZ-Pass tag stops communicating with the toll station. I know that they are both receivers, but for a moment the EZ-Pass tag is a transmitter too. Also every receiver emits little signals as well...

The truth is tested with my combination of devices and is proven 100%. Before I had a little experience, which I blamed on expired batteries of the EZ-Pass tag, but I know now that they are interfering too much to be together.

So the best way they solved the problem is by sending me a front plate mountable tag.

Anyone with similat experience?

--
The only things you regret in life are the chances you never take.
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EZ Pass

I just drove from FL. to Boston with my EZ Pass, two feet above my Nuvi that is on my dash, without any problems. Went thru many tolls, all with green lights.

--
Paul..... Nuvi 765T

No problems here

I have my EZ-Pass and Nuvi 350 about 3 inches from each other in my Jeep. Never have had an issue in the Baltimore area. You just might have a problem with your EZ-Pass transponder. I think the service centers will swap them out if there is an issue, but really not sure as I have never had a problem, but worth a try I imagine.

Later

ez pass nuvi

I traveled from NYC to Virgina and other states, Cleveland, Ohio, philly, boston, new jersey all the time. With my Nuvi 350 mounted on Windshield and vent mount with my EZ pass mounted on front window alittle above the nuvi. Never had a problem passing brigde tolls, tunnel tolls or any Toll roads, With no problem at all. Sorry to hear that you have problems with the Two units in close proximity.

--
arthur

Don't have problem with smart tag...

I don't have problem with it either.

Haven't seen it

I don't have the 350, but I haven't experienced any problems with either the Streetpilot 340 or the Nuvi 750.
My 750 is mounted low on the dash, but the 340 used to be just a few inches below the Easy Pass.

--
Ron - StreetPilot C-340, Nuvi 750

Im using a 350 too and no

Im using a 350 too and no problem

I have a 760, take ez pass

I have a 760, take ez pass multiple times each way to work everysday and never had a problem. Ive been using both for about 6 months.

My Nuvi 360 and the EZ Pass

My Nuvi 360 and the EZ Pass co-exist in harmony in my cars.

--
(2) Nuvi 1450LMT + 3597LMTHD + 2557LMT + DS61LMT-S Boston MA

mine are inches from each other ...

with no problems at all

No probs here

I use the vent mount and my tag is 5 years old. Did you have your cell phone on while this happened?

--
Mike

No issues with Nuvi 360 & EZ-Pass

I travel frequently with both Nuvi 360 and ez-pass operating together ... no problems at all, including the faster express lanes ...

Nuvi 350 and I-Pass (Illinois) work fine

But then the I-Pass is behind the rear view mirror and the Nuvi 350 is on the dash, in the lower left corner of the window. There's a good two feet between them. Maybe your problem is that yours are too close together? You might try moving them apart to see if your RFI problem goes away.

Perhaps other factors involved?

My Nuvi 350 and E-ZPass are both next to the rear-view mirror; less than 2" apart. However, if I position the Nuvi too close to the roof, then the signal strength drops dramatically. Moving it down a tad, away from the metal roof does it for me.
- Rob

Maybe not.....

etzvetanov wrote:

The truth is tested with my combination of devices and is proven 100%.

Maybe with your two specific devices and your specific vehicle but it's beginning to look like your problem is fairly unique.

I just found out recently that the IPASS responders work better if oriented a certain way. The horizontal line across the middle of the case should actually be horizontal; won't work well if that seam is oriented vertically. Limited tests seem to confirm.

--
Magellan Maestro 4250// MIO C310X

Ditto

No EZPass problems with nüvi 200 mounted next to it.

--
><> Glenn <>< Garmin nüvi 2598

I've not had issues

I've not had issues either...

- Jon

No Issues

No issues with a C530 and EZ-Pass on two different cars.

--
Tom

that's odd. I thought all

that's odd. I thought all electronic sold in the U.S. has something that say under FCC regulation, they should still work under certain degree of interference.

SunPass

Minw works fine with my C340

I might as well chime in,

I might as well chime in, too. No problems using my EZPass in conjunction with my C580 in the Denver area.

Paul

--
Get Garmin or Get Lost

No problems with EZpass and

No problems with EZpass and Nuvi 200 on 95

No Problems - well wait a minute

I have not had any problems my transportation. I have my work van 99 E250 C580 and KTAG - never a problem, 99 Merc Grand Marquis with KTAG, C330 or C580 no problems and a 99 Chevy Suburban with my c580. One time when I went through it did not pick up, and I had to back up (not that much traffic on the turnpike in KS) and sit for a minute and then it took. Did not think to turn off the GPS, but will try if happens again...but this was only one trip of many.

Daniel

--
Garmin StreetPilot c580 & Nuvi 760 - Member 32160 - Traveling in Kansas

lol

front plate mountable tag is better anyway but it has nothing to do with garmin gps reciever. trust me.

--
http://sch1106.mosuzedu.ru/

ez pass

I use a 660 and ezpass every day. never a problem.

Nope. No cell phone on...

DefMan wrote:

I use the vent mount and my tag is 5 years old. Did you have your cell phone on while this happened?

... when I was passing the EZ-Pass gate

--
The only things you regret in life are the chances you never take.

It is better...

school_usa wrote:

front plate mountable tag is better anyway but it has nothing to do with garmin gps reciever. trust
me.

Nobody is arguing about the quality, but when I called the EZ-Pass CS, the first question was "Do you have a GPS receiver (built in or windshield or dash mount). I answered yes and they advised me to exchange it for the front mountable tag, because the 2 devices interfere. I also laughed (as an electronics engineer it seemed absurd to me), but I tested the theory and it turned to be true.

--
The only things you regret in life are the chances you never take.

EZ Pass

I dont' have a NUVI, but I do have a 2730 and a 7500.

I have not noticed any issues so far.

I use a friction mount on my dash and it puts the unit(s) about 24" from the EZ Pass thingy.

Tim

only kinds of problems for me is...

when I use my Blackberry - it interferes with the radio (speakers really) but nothing else. My gps works with my ezpass and i got them right next to each other!

--
Bobkz - Garmin Nuvi 3597LMTHD/2455LMT/C530/C580- "Pain Is Fear Leaving The Body - Semper Fidelis"

I had some problems when

I had some problems when both the nuvi and Ezpass were right next to each other in my dash console, and got a few nastygrams from the Mass Pike. I normally leave my Ezpass inside the console as it reads fine there and looks nicer. Once I mounted the nuvi on the windshield the problem went away.

Mine were probably close...

saxmaniac wrote:

I had some problems when both the nuvi and Ezpass were right next to each other in my dash console, and got a few nastygrams from the Mass Pike. I normally leave my Ezpass inside the console as it reads fine there and looks nicer. Once I mounted the nuvi on the windshield the problem went away.

... because my EZ-Pass tag is in middle compartment (where usually they put the built-in GPSs smile ) and the GPS was right above it -- mounted with a suction cup on the windshield. I guess they distance between them was not more than 4-5". Maybe that's what was causing it...

But it is too late now to test, because I sent back this tag.

Anyway... thank you all guys for the responses.
It is always good to share experiences.

--
The only things you regret in life are the chances you never take.

Details are important

etzvetanov wrote:

... because my EZ-Pass tag is in middle compartment (where usually they put the built-in GPSs smile ) and the GPS was right above it -- mounted with a suction cup on the windshield. I guess they distance between them was not more than 4-5". Maybe that's what was causing it...

Maybe you should have mentioned that in your FIRST post ???? So the GPS ends up being BETWEEN the transponder and the windshield and they both are maybe 18 inches to 2 feet away from the windshield........and it is somehow a surprise that it doesn't work right ???? shock

FWIW, the Illinois Tollway Authority says that the ONLY acceptable location for the transponder is high in the center of the windshield, behind the rear view mirror, with the seam in the case oriented horizontally.

--
Magellan Maestro 4250// MIO C310X

How do you explain then...

ka1167 wrote:

Maybe you should have mentioned that in your FIRST post ???? So the GPS ends up being BETWEEN the transponder and the windshield and they both are maybe 18 inches to 2 feet away from the windshield........and it is somehow a surprise that it doesn't work right ???? shock

FWIW, the Illinois Tollway Authority says that the ONLY acceptable location for the transponder is high in the center of the windshield, behind the rear view mirror, with the seam in the case oriented horizontally.

... the fact that when the GPS is off the tag was working perfectly... This is a radio transmitter. It should work fine wherever you put around the windshield area, regardless if it is center top or right bottom. I have tested this as well... At one point I wanted to hide it and pay cash and I put it in the middle of the car in my center console. It worked even there.

Maybe in Illinois you have different standard, but I can tell you my tag was working well before I put the GPS next to it. And if you don't believe me, you can come visit and I'll show you smile... oh wait... I can't. I have a front mounted one now, but you can still come and visit wink

--
The only things you regret in life are the chances you never take.

No problems here

I have a C340 and have driven to lots of places with it that I had to use my EZ Pass to get to. I've never had a problem. (Unrelated) I did have issues when I had one of the tags that goes on the front bumper. Some stations didn't see the tag at all.

Early Ez-Passes Are Being Replaced

I received a note for Ez-Pass last year saying that they were going to start replacing (in NJ) the first batch of Ez-Passes as they were coming to the end of their useful cycle. I was not effected, as I recntly replaced my inside mount Pass with a front plate mount.

BUT, I never had a problem with the Pass interfering with the GPS (Nuvi 350) for the short time they shared the windshield.

--
Garmin #1: eTrex Vista Garmin #2: Nuvi 350 Garmin #3: Forerunner 201 <br> "You are entitled to your own opinion, but you’re not entitled to your own facts." - Sen. D.P. Moynihan

No problem here either

Drove the PA Turnpike from Philly area to Ohio border with several ONs and OFFs with no problems. Garmin nuvi 200W on dash (beanbag mount) and EZPass on windshield behind mirror. Think in PA they require them to be on windshield in the mirror area. My first EZPass was replaced about a year ago when the state figured the batteries were probably near their life's end.

--
Steve W. - nuvi 50LM, 255W & 200W - Philadelphia, PA area

Coated windshield may be your problem

I tried reading through the posts to see if anyone had mentioned this.

https://www.pbaezpass.com/peacebridge.PersonalAppVw.srv

Part that matters:

"All passenger vehicles will be issued interior windshield tags. However, if your vehicle(s) has the following specially coated windshield glass, it will need an exterior tag mounted on the license plate: Heated, Solar Ray, Heated Reflective, Sun Gate, Metal Oxide, Insta-Clear, or Solar Control. These types of windshields contain metal in the glass, which prevents the E-ZPass tag from being read properly in the lane. Customers requiring an exterior license plate mounted tag should mark an "E" in the Tag Type box on the application. Interior E-ZPass tags mounted on the windshield are compatible with almost all other vehicles. If you don't have a windshield requiring an exterior license plate mounted tag, please mark "I" in the Tag Type box.

If you are unsure whether your vehicles has one of these special windshields, contact the dealer where the car was purchased."

I don't know if the use of GPS with the EZ Pass transponder is made worse with one of these windshields.

What kind of car do you drive?

You might have a point, but...

pitterchi wrote:

I tried reading through the posts to see if anyone had mentioned this.

https://www.pbaezpass.com/peacebridge.PersonalAppVw.srv

Part that matters:

"All passenger vehicles will be issued interior windshield tags. However, if your vehicle(s) has the following specially coated windshield glass, it will need an exterior tag mounted on the license plate: Heated, Solar Ray, Heated Reflective, Sun Gate, Metal Oxide, Insta-Clear, or Solar Control. These types of windshields contain metal in the glass, which prevents the E-ZPass tag from being read properly in the lane. Customers requiring an exterior license plate mounted tag should mark an "E" in the Tag Type box on the application. Interior E-ZPass tags mounted on the windshield are compatible with almost all other vehicles. If you don't have a windshield requiring an exterior license plate mounted tag, please mark "I" in the Tag Type box.

If you are unsure whether your vehicles has one of these special windshields, contact the dealer where the car was purchased."

I don't know if the use of GPS with the EZ Pass transponder is made worse with one of these windshields.

What kind of car do you drive?

... it could be a combination. I don't know though what is the glass coating on my car. But I'll be glad if you know details and share them here. I drive a 2007 BMW X3.
I also suspect that there is an internal GPS and it is working as well, but there is no interface. In the models with built-in GPS it is on when you turn the ignition.

--
The only things you regret in life are the chances you never take.

1st ezpass trip

I just got my ezpass and am using a 660 Nuvi. It does seem a little close together, less than 2 feet, but they do say they want the pass by the rear view mirror.
It seems if you had the pass on the far left it would be closer to the booth and further away from the GPS, and feedback on that positioning?

i have the e-z tag and nuvi

i have the e-z tag and nuvi 350 literally next to each other, it seems to work just fine on a recent trip to Springfield, MA.

Happened to me

I got a "invalid signal" error code last time I went through a ezpass and had my 660 on. I didn't know what to do so I drove on. Meant to call the ezpass office but it was closed at the time so I don't know if they'll fine me. The point is that you may be right about some kind of issue with the two units.

EZ Pass Positioning

Every antenna I've ever seen at the toll booth has been directly above the vehicle, at least in FL.

Interference between GPS & I-Pass

I've had no problems with Nuvi 660.

--
Bob

Call them is my advise

Undepelo wrote:

I got a "invalid signal" error code last time I went through a ezpass and had my 660 on. I didn't know what to do so I drove on. Meant to call the ezpass office but it was closed at the time so I don't know if they'll fine me. The point is that you may be right about some kind of issue with the two units.

As long as you call them, they are not going to fine you. I was checking these particular cases and they correspond to pictures taken during your "illegal" pass through the boot.
Please, ask them about the GPS - ez-pass interference...

--
The only things you regret in life are the chances you never take.

Electronic Device Operation

etzvetanov wrote:
Undepelo wrote:

The point is that you may be right about some kind of issue with the two units.

Please, ask them about the GPS - ez-pass interference...

Time, I think, to summarize this discussion and add a technical perspective.

Any/all radio frequency receivers are succeptible to signal loss, degradation and interference. This includes the Ipass transponders.

This is MUCH more likely if the user does things that makes the signal reception marginal in the first place.......like NOT mounting the Ipass where and how the agency recommends.

So.....if you put the Ipass in a compartment in the dash board (or worse yet, in a glove compartment or center console), it's just luck that it works at all and if it does, it's operation is marginal.

Now add to that another receiving device (which also transmits a tiny bit of signal) in very close proximity, or even worse between the Ipass and the reading mechanism over-head on the highway, and you are almost guaranteed to fail.

This is NOT the fault of the Ipass or the GPS. It's just the way very low power radio receivers/transmitters work.

The straw poll so far seems to indicate that a very high percentage of users have no problem with the two devices together.......and many with a less than ideal placement too.

Those who DO have a problem may have cars with windshield glass that causes signal degradation.....more likely if there is a radio antenna wire embedded in the glass. Then put the Ipass in a poor location and THEN put the GPS in an unwise position relative to the Ipass.......and you should not be in the least bit surprised when the Ipass fails.

In most cases, some minor adjustments will probably fix the problem. Kinda like: If all else fails, read the directions! mrgreen

--
Magellan Maestro 4250// MIO C310X

well said

I have my EzPass behind the mirror, the radar detector next to it on the left and the 330 just a foot below it and never have received any errors or friendly letters from the EzPass people.
Here in Illinois, you can check your EzPass online to see if it is deducting and where the tollboth location was. Pretty handy. I imagine other states are the same way.
I also have seen and heard of the type of glass interfering with these units.
My neighbor had that problem.

website here:
http://www.illinoistollway.com

--
******************Garmin Nüvi 1300T****************Member 6523*******************

You got it right ...

ka1167 wrote:

Time, I think, to summarize this discussion and add a technical perspective.

...

It is all true, only we (and I believe most of us) are used to using things without reading fully the manual or not reading it at all. The truth is we are surrounded by electronics (and not only in our cars), which emits all kinds of radio waves, which may lead to interference. So I was sharing the problem, not because I did not solve it, but because this problem can exist, even in very rare cases, whatever the cause.

I believe this forum is for this particular purpose and I want to thank everyone who responded. This simply gives me the confidence that we can help each other and there is a collective knowledge, which can be used well.

--
The only things you regret in life are the chances you never take.

My Nuvi 350 & E-Z Pass

etzvetanov wrote:

I posted this in a thread, which was not relevant, so I decided to move it here.

Obviously Garmin nuvi and EZ-Pass tags are not working well together. Seems that when the nuvi 350 is on in my car the EZ-Pass tag stops communicating with the toll station. I know that they are both receivers, but for a moment the EZ-Pass tag is a transmitter too. Also every receiver emits little signals as well...

The truth is tested with my combination of devices and is proven 100%. Before I had a little experience, which I blamed on expired batteries of the EZ-Pass tag, but I know now that they are interfering too much to be together.

So the best way they solved the problem is by sending me a front plate mountable tag.

Anyone with similat experience?

I use the dash beanbag with my Nuvi 350 and I have NEVER experienced an E-Z Pass problem no matter where I move it. I Drive a X-Type Jag. I have other issues with the Nuvi but this is not one of them.

--
"Ceterum autem censeo, Carthaginem esse delendam" “When governments fear the people, there is liberty. When the people fear the government, there is tyranny.”

Phrasing is Important

etzvetanov wrote:

So I was sharing the problem, not because I did not solve it, but because this problem can exist, even in very rare cases, whatever the cause.

I have (and never did have) a problem with your motivation. The problem was with the specific execution.

The wording of your original post was somewhat unforutnate:
"Obviously Garmin nuvi and EZ-Pass tags are not working well together."

You may have meant only YOURS were not working well together but that is NOT what you said. And the way you said it, you were stating something that is not (generally) true.

Good information but the thread ended up MUCH longer than it needed to be just to indicate that SOMETIMES they don't play well together.

Oh, and where was your cell phone and bluetooth headset while all this was going on............Oops, no, forget I said that! mrgreen

--
Magellan Maestro 4250// MIO C310X

Not inteded to generalize...

ka1167 wrote:

I have (and never did have) a problem with your motivation. The problem was with the specific execution.

The wording of your original post was somewhat unforutnate:
"Obviously Garmin nuvi and EZ-Pass tags are not working well together."

You may have meant only YOURS were not working well together but that is NOT what you said. And the way you said it, you were stating something that is not (generally) true.

Good information but the thread ended up MUCH longer than it needed to be just to indicate that SOMETIMES they don't play well together.

Oh, and where was your cell phone and bluetooth headset while all this was going on............Oops, no, forget I said that! mrgreen

Yes. I meant few cases. Did not intend to generalize, but you are right. The way I said it everybody, who responded understood this way.

I'll try to be more careful in the future. After all one word missing and it turns into something else.

--
The only things you regret in life are the chances you never take.

No problems

I made a 1400 mile trip last week. It took me from RI through Ma pike, NY thruway to Niagara Falls. Kept going form there to Toronto, then Ottowa and made the return run home.
Glad to report my Garmin 630 and my EZ pass played very nicely together, no issues. laugh out loud

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