Kia Optima: Description - Description and Operation - Electro chromic Inside Rear View Mirror - Body Electrical System - Kia Optima TF 2011-2026 Service ManualKia Optima: Description

The ECM (Electro Chromatic inside rear view Mirror) is for dimming the reflecting light from a vehicle behind at night, Preventing glare from the light. The forward facing sensor detects brightness of the surroundings, while the rearward looking sensor detects the strength of the reflecting light and adjusts the reflexibility of the mirror in the range of 7~85%. But, when the reverse gear is engaged, it stops functioning.

1. The forward facing sensor sees if the brightness of the surroundings is low enough for the mirror to operate its function.
2. The rearward looking sensor detects glaring of the reflecting light from a vehicle behind.
3. The ECM is darkened to the level as determined by the rearward looking sensor. When the glaring is no longer detected, the mirror stops functioning.

1. LED indicator

2. ON/OFF Switch

3. Rearward looking sensor

4. Forward looking sensor


Description and Operation
...

Automatic-dimming Function
To protect your vision during nighttime driving, your mirror will automatically dim upon detecting glare from the vehicles traveling behind you. The auto-dimming function can be controlled by the ...

See also:

Components and Components Location
Component Location 1. Windshield wiper arm & blade 2. Wiper & washer switch 3. Windshield washer hose 4. Windshield wiper motor & linkage 5. Washer mo ...

Removal
1. Disconnect the negative(-) battery terminal. 2. Remove the glove box.(Refer to the BD group - "Crash pad") 3. Disconnect the fob hold ...

ECM Problem Inspection Procedure
1. TEST ECM GROUND CIRCUIT: Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is found, repa ...

Copyright www.kiopman.com 2026