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Home >> Buick >> 2022 >> Envision Preferred, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Keyless Entry And Remote Function Systems >> Diagnostic Information and Procedures >> DTC B1451 >> Circuit/System Description

Circuit/System Description

The antenna is located behind the rear fascia and is used to establish low frequency communications with the keyless entry transmitter. As a vehicle with locked doors is approached with a keyless entry transmitter and the trunk touch pad is pressed, the body control module communicates with the keyless entry antenna.