312000733 - N096 THE ELECTROCHROMIC MIRROR IS NOT WORKING

The customer complains that the electrochromic mirror is not working: The interior rear view mirror automatic dimming function is not activated, in other words it does not become darker for night driving.

The vehicle is equipped with an interior rear view mirror which, by pressing a button, is set for day or night use.When driving at nightime the mirror detects the main beam headlamps of following vehicles and dims automatically to eliminate any glare that could dazzle the driver. The automatic dimming function is excluded with reverse gear engaged

		Test results
1	ANTI-GLARE FUNCTION CHECK	All OK	Problems encountered	Operation
	Check that the anti-dazzle function has been activated using the special buttonAlso check that the automatic anti-dazzle function is activated, by carrying outSee Test	Move on to Step 2	1. Function not activated using the button2. Dimming function not activated	1. Activate the function by pressing the button on the mirror2. Move on to Step 2
2	MIRROR POWER SUPPLY CHECK	All OK	Problems encountered	Operation
	Check that the mirror supply is correct, by carrying outSee Test Check the mirror is correctly earthed    See E3032 DOOR MIRROR ADJUSTMENT	Move on to Step 3	1. Mirror power supply interrupted2. Earth interrupted	1. Restore correct power supply    See E3032 DOOR MIRROR ADJUSTMENT 2. Restore earth connection
3	REVERSING SWITCH CHECK	All OK	Problems encountered	Operation
	Check that the reversing switch is working properlyCheck the insulation of the wiring between the reversing switch and the mirror    See E2022 REVERSING LIGHTS	Move on to Step 4	1. Reverse switch short circuited2. Wiring short circuited to + Battery	1. Replace the reversing switch    Op. 5550D22 REVERSING LIGHT SWITCH - R+R 2. Restore the correct wiring insulation.
4	REPLACING ELECTROCHROMIC MIRROR	All OK	Problems encountered	Operation
	Replace the electrochromic mirror    Op. 7065C68 INTERIOR REAR VIEW MIRROR - R+R	End of diagnosis