06/02/2025
Update - Fixed. CIM needed an SPS for the XWD.
Anyone ever have a Saab XWD with a message at start up - every time - *Service XWD* and yet no codes are stored in the car and everything is working as it should be?
Brief history - 2010 9-3 XWD 2.0T Sedan (NON - ELSD) 110K
End of 2023 (107K) I performed a fluid and filter service to the diff.
Sometime in 2024 customer was getting *Service XWD message after driving a bit. (Temperature related/Time Related fault.)
Car has come in for check over/service and I found 2 codes in the RDCM- and once it hit 21 C (about 70* F) the rear diff would just disable itself.
CIM Died while on the lift for service. B1000 Internal Failure.
Installed good used 2008 CIM. Car starts now again etc.
I replaced the rear solenoid behind the module with a known good one from a parts unit I have in stock - topped off the fluid level and cleared the codes.
Now the diff is working perfectly and stays working but I am getting a message at every start up with no codes. I drove it in figure 8's I went on a long test drive and still - same results.
And yes the RDCM has the most current software - I checked/did that at the last visit in 2023.
Thoughts?