The banner above is an advertisment - if it asks you to download software, please ignore.
Site News - 4/9 Saab Owners' Convention Day Pass Raffle | 3/26 M Car Covers (by State of Nine)

The Saab Network Mailing List FAQ
Search:

Main Index
[ Prev by Date ] [ Next by Date ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: Toll Transponder - EZ-Pass
Posted by Matthew Mitchell (more from Matthew Mitchell) on Tue, 3 Oct 2000 01:02:51
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

Got almost 20 responses to my query on whether an EZ-Pass transponder 
will work OK if mounted on the windshield of a 1994 9000 CSE.  Thanks 
to all who responded.

Many of the responses actually were on people's experiences with 
transponders on 900s.  The consensus is that there's no problem with 
the classic 900, and the official instructions say the windshield tag 
is OK for it.  Some people even report that the tag works even if 
it's on the dash or even on the seat.

Three people reported on 1995 900 NG Saabs; all of them had no 
problem with the windshield tag.  One person with a 1998 obtained the 
license plate-mount tag because the instruction said so.  A driver 
who will remain nameless says that kind of tag actually reads sooner 
so you can pass through the tollbooth faster.

Experiences with 9000s were mixed.  A 1996 Aero driver got the 
external from the start (that's what the instructions say: 1995 and 
later should use the external).  A 1993 9KT driver reported he had 
occasional misreads with the windshield tag, so he switched to the 
external.  Two people with 9000s have no problems with the windshield 
tag; they mounted it in the center behind the mirror and below the 
opaque strip on the top of the windshield (it has four little lines 
at the edge).

Not enough data on the 9-5 and 9-3 to draw any conclusions.

My guess as for the 9000 is that the toll agencies probably err on 
the side of caution in saying what cars the regular tag will work 
with.  It sounds like it's OK in the 9000, but you have less room for 
error.

 From my knowledge of RF electronics, and what the instructions say 
about the problem, I presume that windshields with metallized layers 
(certain self-clearing windshields, for example) block the 900 MHz 
signals (I have some understanding of a Faraday cage).  I don't know 
what the coating at the top of a 9000 windshield is made of, but I 
would make sure the tag is below it.

Thanks again, everyone.

Posts in this Thread:
StateOfNine.com
SaabClub.com
Jak Stoll Performance
M Car Covers
Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

This is a moderated FAQ - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no Spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. TSN has been a moderated forum since 1988. For usage guidelines, see the TSN Mission and Purpose Page. Please remember that you are not anonymous
Your address is: 3.22.51.241 - Using claudebot - Logged.
Site Members do not see red text instructions, green links, and bottom of the page banners.
Click here to see all the Site Membership Benefits!