Body Control Module (BCM) Removal/Installation: Notes

NOTE:

The BCM prior to replacement stores the vehicle specification information.
A new BCM does not store any vehicle specification information.
When replacing the BCM, the following two methods are available for storing the vehicle specification information in the BCM.

Auto configuration: When the ignition is switched ON, the BCM reads the vehicle specification information sent via CAN communication from the instrument cluster, and stores the vehicle specification information. However, because the personalization information is returned to the initial values, it is necessary to store the personalization information before replacing the BCM and perform the resetting procedure for the personalization information.
Configuration using M-MDS: The BCM reads the vehicle specification information and the personalization information from the pre-replacement BCM, and writes the information to a new BCM.

When performing the auto configuration, store the personalization information before replacing the BCM and perform the resetting procedure for the personalization information because the personalization information is returned to the initial values.