These models are equipped with a Body Control Module (BCM) that links several systems for simple and accurate troubleshooting using a professional-grade scan tool. The BCM controls door locks, power windows, ignition lock and security system, interior lights, Daytime Running Lights,
Horn, windshield wipers, heating/air conditioning, and power mirrors. In case of a malfunction, the vehicle should be diagnosed by a dealership service department or a qualified automotive repair facility. The electric rear view mirrors utilize two motors for adjustments: one for vertical movement and another for horizontal movement. The control switch features a selector that directs voltage to either the left or right mirror. With the ignition in the ACC position and the engine off, roll down the windows and operate the mirror control switch through all functions for both mirrors, listening for the sound of the electric motors. If the motors are audible but the mirror glass does not move, the drive mechanism inside the mirror may be defective, necessitating a complete mirror replacement. If the mirrors do not operate and no sound is heard, check the fuses. If the fuses are intact, remove the mirror control switch and have its continuity checked by a qualified shop. Additionally, check the ground connections. If the mirror still does not function, remove it and check for voltage at the mirror wires. If there is no voltage in each switch position, inspect the circuit between the mirror and control switch for any opens or shorts. If voltage is present, remove the mirror and test it off the vehicle with jumper wires, replacing it if it fails this test.