Replacing Keys

Replacing Keys

10-Minute Vehicle Key Learn

Note:
* This procedure requires two keys to complete the learn. These keys may be existing vehicle keys or new keys.
* The security indicator may illuminate to indicate the immobilizer system is in learn mode. The indicator should turn off when both keys have been learned.
* This procedure will only learn the vehicle keys. This procedure will not learn the immobilizer prerelease password or the challenge/response data. Do not use this procedure as a substitute for a ECM to TDM Link when replacing or reprogramming a theft deterrent module (TDM) or engine control module (ECM). Doing so will result in a failure to learn the pre-release password and/or the challenge/response data.

This procedure will erase all previously learned vehicle keys from the TDM. Once the 10-minute learn procedure has been completed, any remaining vehicle keys may be programmed using the Adding Keys procedure to ensure their continued functionality.

1. Connect a scan tool to the vehicle in the pass-thru arrangement.
2. Ensure that all power consuming devices are turned OFF on the vehicle.
3. Turn ON the ignition, with the engine OFF, using the first key to be learned. This may be an existing vehicle key or a new key.
4. On the Techline Terminal, select Service Programming System and follow the Techline Terminal on-screen instructions, using the Pass-Thru method. Ensure the correct programming selection is chosen based on component being replaced or programmed. For this procedure, go to the VTD Vehicle Theft Deterrent Learn (Relearn & Link) menu and choose the Key Learn Procedure selection.
5. At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure.
6. Observe the scan tool. After approximately 10 minutes the scan tool will display "Programming Successful, Turn OFF Ignition".
7. Turn OFF the ignition and wait 10 seconds.
8. With the second key to be learned, turn the ignition ON and wait 10 seconds.
9. Turn OFF the ignition. Both keys should be learned at this time.
10. With a scan tool, clear any DTCs.