Thanks X5Ghost. I went to that specialist and checked to find the fault is coming from the sas itself. He reset the fault and the light went off. calibrated it through scanner but he said the light will come up soon. Try it for a while. 2 meters away from the shop and the light came up again. Hopefully on Monday he will open the sas itself and will repair it and he guarantees the repair. He described same procedures 2003x5guy mentioned in this thread. didn't ask him about the warranty period, but considering a special price of 135$ he gave me, it deserves the try. Sorry for the pictures, he won't allows me to document the repair. It is normal

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X5 3.0i SUV
2005 -113000 miles
GM-A5S 690R Tranny