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Module Learn Procedure

WARNING: This page is about a different car, the 2015 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify no other DTCs except for C056E 4B Electronic Control Unit Software are present. Repair any other DTCs before performing this learn procedure.
  2. Prior to driving the vehicle make sure the surface in front of the distance sensing cruise control module is clean. Also verify the mounting area is not damaged and allows the module to face in the intended direction.
  3. Prepare the scan tool to be mobile for the driving phase of the learn procedure. The scan tool needs to stay connected during the driving phase of the learn procedure.
  4. Start the engine.
  5. Initiate the learn procedure on the scan tool by selecting the Configuration/Reset Functions, then select Distance Sensing Cruise Control Module. The IPC will display "Service Adaptive Cruise Control" and the Vehicle Ahead tell-tale will flash during the procedure. Do not back out of this screen or press any other buttons until the learn procedure is complete.
  6. Drive the vehicle within the following conditions for 10-30 minutes or until the learn procedure is complete. The Service Adaptive Cruise Control message and the Vehicle Ahead tell-tale will turn off when the learn procedure is complete.
    • Drive at speeds greater than 50 kph (30 mph).
    • Minimize tight curves.
    • Avoid extreme acceleration or deceleration.
    • Drive in an environment that has stationary objects on the side of the road (street signs, guard rails, mail boxes, fences, etc.).
  7. The learn procedure is complete when the Vehicle Ahead tell-tale stops flashing and the Service Adaptive Cruise Control messages turns off.
  8. If the Vehicle Ahead tell-tale and the Service Adaptive Cruise Control messages fail to turn off:
    • Verify correct learn procedure operating conditions were followed. If necessary repeat the learn procedure while following the recommended learn procedure operating conditions
    • Verify that DTC C1002 Distance Sensing Cruise Control Module Performance is not set. Repair any DTCs that may have set before repeating the learn procedure..
  9. Once the learn procedure is complete drive the vehicle at speeds greater than 40 kph (25 mph) and verify engagement of the adaptive cruise control system. Refer to the owner's manual for instructions on how to engage the adaptive cruise control system.
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