Volvo CEM/ECU Sync service S80 V50 V70 XC70 WITH CEM H*** SID206 ECM***

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

if it is found that the cyrpto key is missing and the keys are missing from the data dump you will need to send your keys in to be re-added too the cem unit. THERE WILL BE AN EXTRA CHARGE FOR THIS SERVICE