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Sporadic Operation of All Wheel Drive System on Saab 9-7x

Problem Description and Possible Solution

The wiring for the transfer case speed sensor can fail causing sporadic operation of the AWD (All Wheel Drive) system.

Problem Data
RepairPal Verified
Average mileage: 80,278 (115–147,000)
5 model years affected: 2005, 2006, 2007, 2008, more2009
22 people reported this problem
Viewing 1 - 13 of 13 comments
When I'm driving And i turn left or right. The car stops or staggers, or locks up. I can't pinpoint if its all wheel drive problem. I've taken it to shops, yes I've taken to a couple different shops and they think rear differential needs replaced(oil) or transmission. I think its what the problem says up top!!
Only rear wheels provide traction in snow- 4WD does not automatically engage as it should
Mine was fine when i ought used. Soon it became a night mare. Locking-up when turning,going backwards or forwards. Clunking, wining when slowing down. So I looked on line and many others have this problem. I changed the Motor on the side of the transfer case and the problem went away for about 3 weeks. $150.00 for the part and not fixed. The parts store has a control box that is for the AWD system that costs $120.00 and I can't find on the 9-7x where it is. So i disconnected the motor on the transfer case, no more problem. DO NOT let a mechanic tell you the differentials need fixed. This proves to myself and others there is nothing wrong with them. The control box i found where is goes, replaced it and all ok. SAAB would not tell me where it was. They wanted $120.00 per hour to replace with my part.
I traded it off. Some one else can have the next trouble now. I can say i liked the truck for every thing else.
when turning, the tires feel like they're rubbing against something or shaking
Front tires do not engage in snow or slick conditions
The all Wheel Drive seems to be trying to engage when I stop at a Traffic Light that is on a slightly downward slope. I feel a slight nudge click several times. I this the speed sensor, transfer case, transmission. I am ready to do a Transmission Fluid / Filter change and though maybe it is a Hydraulic thing. The vehicle runs great other than that. My tires all match and shift great moving.
NO traction at all in the snow/ice. It is supposed to engage when the back tires slip...only one of my tires is spinning.
Had to replace front differential. The transfer case encoder seemed to be the issue after all said and done. Wheels would lock or shutter when turning into a parking space. It felt like a 4wd truck engaged and then suddenly driving on clear asphalt.
Car locks up when making slow sharp turns. Feels like engine is going to stop.
only rear wheels spinning in snow. front wheels not engaging
When i turn right the back wheels sticks
Front tires grab when going left or right
Going straight is fine, turning sharp right turn started to lock up and made loud bumping noise. Then when turning left same issue. Not fixed yet.