QX4 V6-3.5L (VQ35DE) (2001)
Technical Service Bulletin # 99-046C
Antitheft System - IVIS/NATS Key Registration Procedure
November 20, 2002
ENGINE WILL NOT START
IVIS/NATS SYSTEM DESCRIPTION
This bulletin amends TTB99-046b updated Applied Vehicle information.
Please discard all paper copies of that bulletin.
1997 - 2001 Q45 (FY33)
1999.5 - 2003 QX4 (JR50)
2002 - 2003 I35 (CA33)
2000 - 2001 I30 (CA33)
1999 I30 (CA32)
2000 - 2002 G20 (P11)
Start of production
This bulletin covers two versions of the Infiniti Vehicle Immobilizer System/Nissan Anti-Theft System (IVIS/NATS). One of these systems, referred
to as either "NATS V 2.0" or "NATS V 5.0", is standard equipment on the Applied Vehicles listed.
NATS uses advanced anti-theft functions and requires CONSULT-II or CONSULT (where applicable) for service. This helps prevent "unauthorized
access" into the NATS registration procedure.
When the NATS ignition key, IMMU (Immobilizer control unit), or ECM (ECCS control unit) are replaced, C/U initialization is necessary. It is also
necessary when registering keys and as part of many NATS Service Manual diagnostic procedures.
The NATS "C/U Initialization and Key Registration" Procedures in this bulletin are only for the Applied Vehicles listed. Do not use these
procedures on any other NATS equipped vehicles.
NATS V 2.0 and NATS V 5.0 are very similar except for the "C/U Initialization and Key Registration" Procedure. Each Version uses a different
Special Service Notes:
Key Registration Required
NATS will not allow the engine to start without the use of a registered ignition key. Infiniti models with NATS have a "transponder chip" in the
ignition key head.
If a vehicle will not start and the Dash Security lamp is ON solid, it is possible that the ignition keys were not properly registered into the vehicle's
Immobilizer control unit (IMMU).
When the NATS ignition key or IMMU are replaced, C/U Initialization and Key Registration MUST BE PERFORMED or THE VEHICLE WILL
NOT START. This same procedure is also needed when registering new keys. It is part of many NATS Service Manual diagnostic procedures.
If any ignition keys need to be added or it any ignition key needs to be re-registered, ALL other ignition keys must be re-registered at the same time