When the radio is locked
In case of a audio unit being linked with the vehicle’s NATS (immobilizer system), disconnection of the link
between the audio unit and the IMMU will cause the audio unit to switch into the lock (“SECURE”) mode in
which the audio unit is fully inoperative. Hence, repair of the audio unit is basically impossible, unless the audio
unit is reset to the “NEW” state for which special decoding equipment is required.
Clarion has provided their authorized service representatives with so called “decoder boxes” which can bring
the audio unit back to the “NEW” state, enabling the audio unit to be switched on after which repair can be
AUDIO
System Description/Sedan
EL-258
carried out. Subsequently, when the repaired audio unit is delivered to the final user again, it will be in the
“NEW” state as to enable re-linking the audio unit to the vehicle’s immobiliser system. As a result of the above,
repair of the audio unit can only be done by an authorized Clarion representative.
