[nigel]

the heated rear window does not work on the used 99 Taurus I just bought. The weather is just needing this to be used. The light on the switch comes on I haven't checked the relay yet. I know there is a TSB 219 9151 for the rear heater. Anyone had any problems with this other than a fuse or relay?

 

[sundarpn]

I think you can use an milti meter on the tracks on the inside of the read windshield and see for voltage.
the Haynes manual talk abou this.

 

[firespirit]

Yep, most likely a track on the rear window is either bad or cut.. try testing those first.

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[topgunovrtx]

I had the same problem with my new Honda. I simply cleaned the connector going to the rear defogger wires and the problem was solved. Use a little WD-40 or dielectric grease on the connector, after cleaning it. Check the obvious first.