LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2000 >> Mustang Base, 2D Convertible, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft Systems - Passive >> Programming >> Key Programming - Erase All Keys & Program 2 Keys
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Key Programming - Erase All Keys & Program 2 Keys

NOTE: This procedure has been updated to include information from Ford factory TSB 99-26-6.
NOTE: This procedure is used when a customer needs keys programmed into system and does not have 2 programmed ignition keys available, or when programmed ignition keys have been lost and/or ignition switch assembly has been replaced. This procedure will erase all programmed ignition keys from memory and prevent vehicle from starting until 2 keys have been programmed. Ignition keys must have correct mechanical key cut for vehicle and must be an encoded key. If additional key(s) are to be programmed, perform KEY PROGRAMMING - USING 2 PROGRAMMED KEYS  . If remaining keys are with customer and not with vehicle, instruct customer to see owner's manual to program spare key(s).
  1. Insert Ford Service Function (FSF) card VERSION 6.0 or higher into New Generation Star (NGS) or Worldwide Diagnostic System (WDS) tester. Turn ignition switch from LOCK to RUN position. Select SERVICE BAY FUNCTIONS and then HEC. Perform KEY PROGRAMMING - SECURITY ACCESS PROCEDURE  . After security access procedure has been completed, a new menu will be displayed with command options. Select IGNITION KEY CODE ERASE.
  2. Turn ignition switch to LOCK position and disconnect NGS/WDS tester. Insert first encoded ignition key into ignition lock cylinder. Turn ignition switch to RUN position for 3 seconds. Turn ignition switch to LOCK position and remove first encoded key.
  3. Within 5 seconds, insert second encoded ignition key into ignition lock cylinder. Turn ignition switch to RUN position for 3 seconds. Turn ignition switch to LOCK position and remove second encoded key. Both encoded ignition keys should now start vehicle.