Scenic Bj1999 immobiliser

Good evening The following happened to me for the third time in January 2010. EMin Renault Scenic Bj. 09.199. 1.6L 16V The immobilizer is not recognized. Twice it was a cold night. The Renault workshop coded it new, but is there a problem. WO??????? You propose to me new central control unit. Is there another solution for this ???????