GM Volt Forum banner

1 - 20 of 23 Posts

·
Registered
Joined
·
19 Posts
Sorry - I've searched high and low and haven't found a definitive reply ....

Just wondering if anyone else has experienced problems with their EZ-Pass triggering while in the Volt?

I have it placed just below the rearview mirror on the front windshield - same as I always have for any other car. The transponder doesn't register when going through the EZ Pass lane. ... I called EZ Pass and had them send me another transponder. SAME THING. So - after the second one didn't work, I am coming to the conclusion that it's not a problem with the transponder and must be something else. But I don't know what.
 

·
Administrator
Joined
·
19,981 Posts
Can't speak on Gen 2, but it works fine in my 2011 even sitting inside the cubby on top the dash (Gen 2's don't have a dash cubby)
 

·
Registered
Joined
·
2,359 Posts
Are you running a dash cam?

I've seen some cheap ones (and even a couple of nicer models) produce a stupid amount of EMF interference.
 

·
Administrator
Joined
·
19,981 Posts
Are you running a dash cam?

I've seen some cheap ones (and even a couple of nicer models) produce a stupid amount of EMF interference.
I thought the EZ Pass was more like an RFD (passive) rather than an active broadcaster?

But still, good point. Power bricks plugged into the car—whether dashcam or other device—can emit EMF that interfere with the tire pressure monitoring system for example. We have seen several cases of that posted here.
 

·
Registered
Joined
·
14 Posts
I have not had an issue using my EZ Pass in my 2017 Volt. I have not mounted it yet, but I have held it up in my hand and had no issues.
 

·
Registered
Joined
·
19 Posts
Discussion Starter #6
Are you running a dash cam?

I've seen some cheap ones (and even a couple of nicer models) produce a stupid amount of EMF interference.
No dash cam. Nothing unusual. Very strange. I mean, it's possible I have 2 dead transponders in a row. But seems unlikely. I just can't think of anything else.
 

·
Registered
Joined
·
49 Posts
I have a 2017 Premier and place the transponder on the dash behind the center stack display and have had no problems or at least none that I am aware of.
 

·
Registered
Joined
·
19 Posts
Discussion Starter #8
I just called EZ Pass and they said some metal oxide glass can prevent it from being read -- but if that were the case on the Volt, then it wouldn't matter where you put it inside. So - I'm going to try putting it lower down and see if that has any effect.
 

·
Registered
Joined
·
292 Posts
Ours in the rfid version and it works fine on both the volt and bolt. In co they have phased out the box transponders and now use the sticker rfid ones.
 

·
Registered
Joined
·
2,359 Posts
I thought the EZ Pass was more like an RFD (passive) rather than an active broadcaster?

But still, good point. Power bricks plugged into the car—whether dashcam or other device—can emit EMF that interfere with the tire pressure monitoring system for example. We have seen several cases of that posted here.
Yeah about 90% of the ezpath type stuff out there is RFID, but enough EMF in the area makes it hard to read. We had a similar issue in a warehouse at work until we pulled out a bad HVAC blower that was causing tons of interference.
 

·
Registered
Joined
·
19 Posts
Discussion Starter #11
Not sure what RFID is vs. any other type ... but I've had the same EZ Pass tags in all my cars for about 10 years now, and never had a problem in any other car. And now have issues with multiple tags in this car. Doing nothing differently.
 

·
Registered
Joined
·
2,596 Posts
I have the old fashion EZpass in a Gen 2. I put it high on the right side of the windshield so it is in the driver's line of sight behind the rear view mirror. That way it doesn't obstruct any glass for the driver -- I never see it. Works just fine.
 

·
Registered
Joined
·
158 Posts
NY green EZ pass tucked into the "slot" right side behind mirror nearest roof; BlackVue dashcam (small horizontal cylinder) below the 2017 Gen 2 VOLT front camera. No problems yet in NY or MA
 

·
Registered
Joined
·
19 Posts
Discussion Starter #14
Thanks everyone for confirming it's working fine for you. No idea what's going on for me.
 

·
Registered
Joined
·
2,359 Posts

·
Registered
Joined
·
19 Posts
Discussion Starter #16
I think the OP already covered this but
EZpath doesn't work with all windshields. In some cars the black painted areas are literally for allowing the signal to pass through (Tesla).

Also I believe you can get a license plate frame type of transmitter as well.
Yeah I think I read that somewhere which is what led me to ask whether there was something with the Volt. But everyone else seems to have no problems. So it doesn't look like that's the issue with the Volt.

The woman I spoke to did mention the license plate version - I have to send back the transponder I have with a letter requesting one. Holding off until I can see if there's another solution.
 

·
Registered
Joined
·
76 Posts
I would try a simple test.

Go thru the manual lanes, the one with the guy were you have to stop. Have it mounted on the window. If it does not work. take it down and stick it out the window, holding it above the car. If it works then it could be something with the windshield or car. If not then it is the transponder.
 

·
Registered
Joined
·
4,627 Posts
I have a 2017 Premier and place the transponder on the dash behind the center stack display and have had no problems or at least none that I am aware of.
Same here, my EzPass just sits in the space, on top of the dashboard, behind the center display of my 2017. I tried leaving the EzPass in the center console but it was not able to be read from the console location.
 

·
Registered
Joined
·
3,439 Posts
Same method for me as for CBK and jcanoe. Worked for me. Try putting your transponder on the dash instead of where you currently have it mounted. Just as a test. There may be some localized interference.
 

·
Registered
Joined
·
23 Posts
I have a 2017 with a blackvue dashcam underneath the rearview mirror and an EZpass to the left and up (nicely blocking the spot where the sun would come through the gap with the visor. No problems with toll reading.
 
1 - 20 of 23 Posts
Top