System Operation - Exterior, Heated

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

On vehicles equipped with rear window defrost, the heated exterior mirror glass and if equipped, the heated trailer tow spotter mirror glass operates when the rear defrost system is activated.

On vehicles equipped with heated mirrors only, the heated exterior mirror glass and if equipped, the heated trailer tow spotter mirror glass operates when the heated mirror button is pressed on the FCIM.

The heated mirrors are heated for a period of 10 minutes when the engine is running and the defrost system is activated.

The LH and RH heated exterior mirror glass voltage is supplied by the rear window defrost relay through BJB fuse 63 (15A).

On vehicles equipped with a LH exterior auto-dimming mirror, the LH exterior mirror glass takes longer to defrost than the RH exterior mirror glass due to differences in the mirror glass thickness.

If equipped, the rear window defrost can also be commanded on and off using voice commands or by touching the rear window defrost button located on the touchscreen interface (FDIM). For additional information on voice or touchscreen commanded features, refer to the Owner's Literature.

For additional information on the rear window defrost system, Refer to: Glass, Frames and Mechanisms - System Operation and Component Description .