metal oxide windshilds / bay area fastrak

[toejam357]

do porsches, specifically 987S's have metal oxide in their windshilds? here in the SF bay area, we have a toll system called Fastrak and their website says metal oxides prevent the Fastrak transponder from working properly. does anyone else have this problem? i've encountered it a couple of times, but thought it was their system!

[Westcoaster]

do porsches, specifically 987S's have metal oxide in their windshilds? here in the SF bay area, we have a toll system called Fastrak and their website says metal oxides prevent the Fastrak transponder from working properly. does anyone else have this problem? i've encountered it a couple of times, but thought it was their system!

This is interesting because I was wondering if the windshield was interferring with my GPS receiver, and I have noticed that many rental cars have the GPS antenna mounted on the hood.

I have also noticed that certain GM vehicles have windshields that appear golden/pink when viewed with polarized sunglasses, ours do not, could this be a way to tell that they have metal oxide in their windshields?

[raloise]

I had some tinting done by a company that does it for Porsche and BMW dealers in the area, the installer told me that certain film does interfear with the Fastrack and GPS systems, so they don't install it. Perhaps your windshield is tinted and has this problem

[mbodo]

No idea if the compound is in the windshield, but I rarely have problems with my fastrak. even when the transponder doesn't emit the 'beep beep' ... they still snap a photo of your plate and charge your account just the same with no penalty.

[Popolou]

Well, if i may throw my 2p in this. Isn't the GPS antenna for the PCM located inside the cabin by the screen and under the sun sensor? Also, isn't the radio antenna within the windscreen?

I think you'll be alright.

Regards

Popolou

[White987S]

I have a 987S Boxster, and have NO issues with my Garmin GPS or toll collection device (IPass).

[RFM]

987 - 997 GPS and PHONE antennas are bold on a metal plate just above the interior filter on the right side in the battery area, the PCM diversity antennas are integrated in the windshield. If it can help all senders and receivers are out of the cabin.

[toejam357]

i found the answer to my own question....NO, there is no metal oxitde because the Fastrak (toll reader) website doesn't list our cars as affected.

cheers.

[hqduong]

I live in the bay area and have a 2008 Boxster S, no problems with Fastrak at all. I suspect it's your fastrak unit.