S class and electronic toll devices: S class telephone problem

[stebro]

I have a 2000 S-430. I also have an electronic toll payment device to use on local bridges. The toll device works only about 50% of the time. The Golden Gate Bridge authority told me that there is something about the window glass in the S class that interferes with the signal needed to pay the toll. They said the toll device will work if I hold it up to the glass on the sunroof (with the sunroof closed). Does this make sense?

One other question: I have an intermittent telephone problem. When I press the steering wheel button to make a voice actuated call, I get a message saying "function not possible." Usually, if I shut off the phone with the dashboard switch and turn it back on, everything is OK. The problem even happened at the dealer, and they replaced a chip of some kind but it's still happening. The dealer is stumped. Has anyone experienced this problem?

[scorchie]

Please read your owner's manual. It should cover your issue with the Fasttrak payment transponder. There is a section of windshield glass that is not blocked and the device can be mounted to the visor there.

-s-