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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Mirror Systems) >> Diagnostic Information and Procedures >> Heated Mirrors Inoperative >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The R/DEFOG relay supplies voltage to the outside rearview mirror heater elements based on the current state of the rear window defogger. The replay supplies B+ through the driver/passenger mirror heating element supply voltage circuit when a request is seen.

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