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The fan speed control module replacement on a 1996 Saab 900 (same applies to 1999-2002 9-3). It is a relatively common problem on these cars -- the control module burns out, causing the fan to die (or sometimes blow at high speed all the time, even when the climate control is off).

Note: the back of the module works as a radiator, and attaches to the metal bracket under the dash, which helps further dissipate the heat. It's not recommended to turn the fan on with the module hanging loose as it might burn out again due to insufficient cooling.

 

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19.01.2006: Glovebox
Remove the glove box (six T25 screws, one 10 mm bolt and one clip below).

 

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19.01.2006: Side panels
Remove the side panel and the cover over the control module.

 

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19.01.2006: Air duct
You might want to remove the air duct too, to make it easier to unplug the harness.

 

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19.01.2006: Module attached
The speed control module is attached with two Torx T25 screws.

 

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19.01.2006: New module
The replacement right out of the box.

 

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19.01.2006: New module
You can see the metal rear surface and the additional backing plate that work as radiators.

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