Buick Regal: Theft Deterrent Module Replacement

Preliminary Procedure

Front Floor Console Replacement.

1. Theft Deterrent Module
   Procedure
   1. Disconnect the electrical connector.
   2. Control Module References for programming and setup information, if required.

IMMOBILIZER SYSTEM COMPONENT PROGRAMMING (WITHOUT BTM)

This procedure will learn the immobilizer function. If the battery voltage is low, charge the battery before proceeding with the learn. If the body control module (BCM) or engine control module (ECM) have been replaced, they must be programmed before performing this learn procedure.

Depending on the immobilizer function being learned or the component replaced, different learn functions are required to be performed. These learn functions are as follows:

1. Connect a scan tool to the vehicle and access SPS.

2. Turn ON the ignition, with the engine OFF.

3. Ensure that all power consuming devices are turned OFF on the vehicle.

4. Select SPS application and follow the on-screen instructions.

5. Select Reprogram ECU.

6. Select IMMO Immobilizer Learn - Setup.

7. Select the appropriate programming function based on the component that was replaced or is being programmed. Refer to the table at the top of this document for assistance in choosing the correct programming function.

8. Follow the on-screen instructions.

9. After programming all keys "Programming Complete" is displayed.

10. Press the lock and unlock button on each transmitter that was programmed. This will awaken each transmitter and allow keyless entry functions to be established.

11. With a scan tool, clear any DTCs.

12. Verify each key is operating properly. Operate each of the keyless entry functions using the buttons on the transmitter and then start the vehicle. When verifying operation, make sure that no other keys are near the vehicle.

IMMOBILIZER SYSTEM COMPONENT PROGRAMMING (WITH BTM)

This procedure will learn the immobilizer function and require greater than 15 minutes to complete. If the battery voltage is low, charge the battery before proceeding with the learn. If the body control module (BCM) or engine control module (ECM) have been replaced, they must be programmed before performing this learn procedure.

Depending on the immobilizer function being learned or the component replaced, different learn functions are required to be performed. These learn functions are as follows:

1. Connect a scan tool to the vehicle and access SPS.

2. Turn ON the ignition, with the engine OFF.

3. Ensure that all power consuming devices are turned OFF on the vehicle.

4. Select SPS application and follow the on-screen instructions.

5. Select Reprogram ECU.

6. Select IMMO Immobilizer Learn - Setup.

7. Select the appropriate programming function based on the component that was replaced or is being programmed. Refer to the table at the top of this document for assistance in choosing the correct programming function.

NOTE:

• At multiple times during the learn procedure, SPS will instruct you to turn the ignition to the run position. Make sure the vehicle is actually in the run mode before continuing on the SPS terminal. If the ignition is not in the run mode, the learn procedure will fail. To verify the vehicle is in Run mode, verify the green LED is illuminated on the ignition mode switch.
• The key pocket is located inside the front center console storage area where the lock icon is located. Place the key into the pocket with the buttons facing up.

8. Follow the on-screen instructions.

NOTE: If the programming does not complete or hangs during the programming operation, refer to Unable to Complete Programming below.

9. After programming all keys "Programming Complete" is displayed.

10. Press and hold the ignition mode switch for 15 seconds.

11. Press the lock and unlock button on each transmitter that was programmed. This will awaken each transmitter and allow passive and active keyless entry functions to be established.

12. With a scan tool, clear any DTCs.

13. Verify each key is operating properly. Operate each of the keyless entry functions using the buttons on the transmitter and then start the vehicle. When verifying operation, make sure that no other keys are near the vehicle.

Unable to Complete Programming

When attempting to program immobilizer components, various conditions may prevent the programming operation from completing. These conditions may be caused by normal system operation, a system malfunction, or an external influence. Common symptoms of an incomplete programming are receiving an error message during the attempt or having the SPS application become unresponsive.

• DTCs are set in the body control module (BCM).

  The immobilizer system is a function of the BCM software. If immobilizer DTCs are set in the BCM, such as DTC B2955, a fault has been identified in the immobilizer system. If this is not corrected before attempting to program components, the programming may not complete. Correct all immobilizer DTCs before attempting to program any immobilizer components.

• The key has been programmed to another vehicle or is not the correct type for the vehicle.

  A key can only be programmed to a single vehicle. Once a key is programmed to a vehicle, it is paired for the life of the key. The key can be learned to the same vehicle again and again, but it cannot be programmed to a different vehicle.

  Many vehicles are available with both a base keyless entry system and an optional passive entry system. These keys typically look identical but cannot be substituted for one another. To verify the key is correct, compare the part number that is etched on the key to the part number identified in the parts catalog. The key should be correct for the system installed in the vehicle.

• The theft deterrent module is not properly secured or the key is not properly positioned in the pocket/slot.

  A theft deterrent module that is not fully seated or is otherwise not properly secured may prevent a coupling between the transponder located in the key and the theft deterrent module. Being out of place by as little as 1 mm may prevent programming from completing. Make sure the theft deterrent module is properly installed and fully seated in its clip.

  The key should be positioned in the proper orientation so that it lays flat in the pocket. If a large key ring or other item attached to the key prevents the key from laying flat, remove the key ring.

  To determine if the theft deterrent module is properly secured, remove the battery from the key and place the key into the pocket/slot. Attempt to change the vehicle mode by pressing the vehicle ON/OFF switch. The vehicle should change modes. If the NO REMOTE DETECTED message is displayed on the DIC, the theft deterrent module may not be properly secured.

• External interference is interrupting the programming operation.

  External RF interference and EMI may interrupt the low frequency coupling between the key and theft deterrent module. This interference may come from many different locations. Devices plugged into the vehicle power outlets such as cell phone chargers, laptop computers, GPS devices, etc. may cause interference. Vehicle location may also cause interference. Locations near airports and military installations may causer interference. Remove all customer installed devices and, if necessary, move the vehicle if interference is suspected.

READ NEXT: