Question about 1997 Saab 900

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1997 saab 900 rear defroster

The rear defroster doesn't come on when the button is pushed the light on the button comes on and the fuse is o.k. no owners manual, where do we look to see if connection is bad?

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Look at the connectors to the rear window heater grid, test them for power and poss broken connection to grid.

Posted on Oct 01, 2008


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Posted on Jan 02, 2017


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How do I find the problem and fix it? a bad rear window defroster.

Look carefully for a break in the grid on the window. It might be anywhere on the lines and very small. If you find one it can be fixed with stuff like this

If you find the tag wire has separated there is different suff

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Saabs can be prone to floating ground issues in some of the light fixtures. My older one had this happen in particular, when the ground plane in the tail light cluster rusted and isolated the ground on a bunch of lights. It turned into a bypass where brakes, blinkers, emergency, all would make all the lights flash kind of dimly.

You should be able to remove the rear light clusters from inside the trunk. Look and see if there is corrosion, or signs that the ground plane - should look like a large scale printed circuit board, is damaged. Clean it off with a wire brush. if the ground plane is broken, you'll want to either get a replacement base plane, or, if you re-connect the ground, use some heavy wire to solder it back into connection so that it can handle the current for the lights.

I hope this might help!

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Fuses lights elights

bad fuses.
open glove box, read the operators manual. all fuses shown there.
lost that.?
the more i link to this , the slower it gets. funny that....
or just check all fuses.

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Does the indicator light come on when you turn the defroster on? Have you checked to see where the wires come in on the rear window to see if they might have gotten disconnected. It usually happens right at the point where the wire connects to the grid.

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1995 saab 900 convertible turn signals and brake lights not working

Check your fuses, even fuses not associated with lighting. If all ok it is probably the muti-funtion switch on the steering column, It is the switch that your turn signal lever connects to.

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1995 saab 900 convertible turn signals and brake lights not working

With the age of the car it could be that your grounds are bad somewhere which explains why essentially no lights work ... even though the bulbs/fuses are OK. You get power to these lights by having positive wires going to the light bulbs and the negative side of the circuit coming from the frame of the vehicle (referred to as the ground).
Pull all the connectors that you can see and make sure they are not corroded.
Check also that no associated relay that has anything to do with the rear lighting is not bad.

Jan 13, 2018 | 1995 Saab 900

1 Answer

Rear defogger stopped working, push button light comes on, but no defogging.

under dash check fuse #36 7.5 fuse, light will come on but no defrost of rear window

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