This Preliminary Information communication provides information to the technician about vehicles that the headlamps do not turn on during low ambient light conditions such as nighttime when unlocking their vehicle with the remote transmitter. Technician will need to ensure that the Vehicle Locator Light feature has been turned on in the Vehicle Personalization menu. If the feature is turned on then the technician will need to update the Body Control Module with the latest calibrations in Tis2Web.