Hi, has anyone come across an issue with the key/immobiliser come out of sync. Battery on car and key fob OK. Can;t identifiy any rogue radio signals from outside sources. Warning lights and Visit dealer messages come up, car will not start immediately, but will after 10+ attempts. Car does not go into recovery mode.
Dealer has reset interface between key and immobiliser and same problem with both keys.

Car a 04 2.0 TDI with DSG and 40K on clock.