Symptom Chart

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
No communication with the driver seat module (DSM)	Circuitry open	REFER to MULTIFUNCTION ELECTRONIC MODULES .
The mirrors are inoperative	Fuse Circuitry Exterior mirror control switch	Go to Pinpoint Test A .
A single mirror is inoperative	Circuitry Exterior mirror control switch Exterior mirror motor	Go to Pinpoint Test B .
A single mirror does not function with switch logic	Circuitry Exterior mirror control switch Exterior mirror motor	Go to Pinpoint Test C .
The memory mirror is inoperative	Fuse Driver seat module (DSM) Circuitry Exterior mirror motor Mirror control switch	Go to Pinpoint Test D .
The memory mirror is inoperative - memory set switch	Circuitry DSM Exterior mirror motor Memory set switch	Go to Pinpoint Test E .
The heated exterior mirror is inoperative	Circuitry Exterior rear view mirror	Go to Pinpoint Test F .
The auto-dimming mirror does not operate correctly	Obstructed rear-facing sensor: stickers, window decals, tags non-OEM window tinting Obstructed forward-facing sensor: stickers, window decals, tags non-OEM window tinting	If possible, REMOVE the obstruction. If the obstruction cannot be removed, go to Pinpoint Test G to test the auto-dimming mirror for correct function.
	Light source near or inside of vehicle	None. Any light source the rear-facing sensor is exposed to can be considered glare.
	Vehicle inside garage or tunnel	None. Ambient conditions are similar to nighttime conditions.
	Fuse Circuitry Auto-dimming interior mirror LH exterior rear view mirror	Go to Pinpoint Test G .