Problem solved by dealership. Finally they tell me it was a defective rear speed sensor that was emitting intermittend signal wich was causing the 4x4 system to fail mostly under slippery condition.
2008 FG2 Civic SI FBO - SOLD
2009 E92 335i Xdrive FBO - SOLD
2017 F22 230i Xdrive | Alpine White | Coral Red | M-Sport | BMS Billet Intake | Dinantronics Sport Tuner | Roof Rack | Daily Driven