Saab 9-5 ACC FAQ NoticeThis FAQ is my own answers to some frequently asked questions. These pages are provided as a service to owners of Saab 95 all over the world. The answers are, to my knowledge, correct. Any corrections to errors are welcome.
This FAQ reflects my view of the world. I don't know if that view is shared by Saab, or any other company mentioned here.
Feedback on this FAQ is appreciated. A feedback button is provided for each of the FAQ entries.
When the information given in the FAQ differs between model years this is marked using a marker like in these examples; MY 1998 - 2005 for the classic 9-5 and MY 2006 for the Dame Edna edition.
Note: Questions and requests for help will be answered when time is available. Please don't complain to me if your Saab is making you unhappy or when I can't give you a new SID or DI.
MY 1998 - 2005
ACC does not work as it shouldQ: The ACC stops cooling even though the cabin is warm. Why?
A: The ACC may be broken, but it is more likely that it just needs a recalibration.
To recalibrate the ACC you have to turn on the ignition and then push AUTO and OFF simultaneously. The ACC display will show a single zero in the left temperature display for about 30 seconds. The left temperature display shows the number of faults found and the right temperature display shows error codes. If the number of faults isn't zero then a visit to a Saab dealer may be needed.
The recalibration must be done each time the battery has been disconnected or discharged.
Hot air from rear nozzles with AC onQ: I have the AC on, but the rear nozzles are blowing hot air. Why?
A: You have closed the passenger side front nozzles.
The problem is that you have closed the passenger side front nozzles. The result is that the pressure in the passenger zone of the dual zone ventilation system gets so high that the servo is unable to move the air vent that controls the air mix for the back seat nozzles.
The short term fix is to open the passenger side front nozzles.
The long term fix is to visit your friendly Saab dealer. A fix for this problem has been known and available for several years. The fix involves drilling two holes inside the ventilation system to equalize the pressure buildup. One 27mm hole is drilled in the center air channel (passenger foot area) and one 27mm hole is drilled in the side air channel (passenger instrument panel).
The procedure is described, here in Sweden, in Saab SERVICE TIPS group 870 number 179. I don't know if the same group/numbering system is used for other markets.
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Last modified 2005-10-15 22:58:00 (built 2008-10-26 13:01:25).
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