Mustang GT V8-4.6L SOHC VIN X (1998)
Alarm System Transponder: Service and Repair
Spare Key Programming-Without Programmed Keys
NOTE:
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This procedure is for the situation where a customer needs keys programmed into the system and does not have 2 programmed ignition keys
available. This procedure is also useful when programmed ignition key(s) have been lost or the ignition switch assembly has been replaced, and it
is desired to erase key(s) from Passive Anti-theft System (PATS) memory.
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This procedure will erase all programmed ignition keys from vehicle memory and the vehicle will not start until two keys have been reprogrammed
to the vehicle.
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Two PATS encoded keys with the correct mechanical cut must be available to perform this procedure. One or both of them may be the customer's
original keys.
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If additional keys are to be programmed, follow key Programming - With Programmed keys. If the remaining keys are with the customer and are
not available with the vehicle, then instruct the customer to review their Owner's Manual under "Programming Spare keys Procedure" for
instructions on programming their remaining keys.
1. Turn ignition switch from OFF to RUN.
2. Enter New Generation STAR Tester/Service Bay Diagnostic System (NGS/SBDS). Follow the Security Access Procedure to obtain security
access.
3. From NGS/SBDS menu: Select IGNITION KEY CODE ERASE.
4. Turn ignition switch to OFF and disconnect the NGS.
5. Insert first encoded key into the ignition switch and turn the switch to RUN for three seconds.
6. Insert the second encoded key into the ignition switch and turn the switch to RUN for three seconds.
7. Vehicle should now start with both ignition keys.
