VOLVO SID807 & SID807EVO

These modules can lose sync from voltage drops IE. Dead or dying battery...
or sometimes happens when the battery is disconnected.

Some of the common symptoms are:
Car not starting due to loss of communication with the CEM unit (central electronic module)
and a message appearing saying *IMMOBILISER TRY START AGAIN*

POSSIBLE FAULT CODES
C326 Communication control module
C326 Communication control unit Permanent