Hi my battery has died on nissan micra K12 I think due to hazard lights flashing intermittently all over christmas when car was parked up. Since then I have broken my arm and have been unable to drive and now the car is dead. My owners manual has a card in it with radio serial number:BP2347 20856083 and an additional four digits 8695 with heading safety no. Can anyone confirm please that this is the radio code. Thanks