Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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NATS C/U Initialization and Key Registration Procedure

This procedure must be performed:

^ If the ECM has been replaced.
^ If the IMMU has been replaced.
^ If the ignition keys have been replaced or added to the system.

The NATS V 5.0 immobilizer system uses enhanced anti-theft functions which are password protected to prevent unauthorized access into the NATS registration procedure.

IMPORTANT:
This Electronic Key Registration Procedure for NATS V 5.0 is "unique" to the 2002 Q45. Do not use this procedure on any NATS vehicles other than the 2002 Q45.