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Enabling Unlimited Key Mode

NOTE: This is intended for use by customers who need more than 8 keys programmed.
  1. Have customer select a 4-digit, non-0000 number that will be programmed to all vehicles. Customer needs to use same number for all vehicles. Valid digits are 0-9 plus letters A-F. At this time, unlimited keys may be programmed to vehicle. To change/view stored code, use procedure for turning off unlimited key mode in next step.
    2. NOTE: If PID: UNLIMITED TRANSPONDER KEY ID is not available, unlimited key mode is turned on, and must be turned off before viewing stored code.
  2. Select PID: UNLIMITED TRANSPONDER KEY ID and compare value to code chosen in step 1)  . Using New Generation Star (NGS) tester, select Powertrain Control Module (PCM) from menu. Select SECURITY ACCESS PROCEDURE. See SECURITY ACCESS PROCEDURE  . If unlimited transponder security key PID was 0000, select active command SET UNLIMITED TRANSPONDER KEY. Enter 4-digit code chosen by customer.
  3. Select ENABLE UNLIMITED KEY MODE, then IGNITION CODE ERASE. Disconnect NGS tester and turn ignition switch to OFF position. Program 2 ignition keys to enable vehicle. See ERASE ALL KEY CODES - PROGRAM 2 KEYS  , beginning at step 2  . Program any additional keys. See PROGRAMMING SPARE KEY(S) WITH 2 PROGRAMMED KEYS  .
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