Hyundai Elantra: Electro Chromic Inside Rear View Mirror / Description and operation
The ECM (Electro Chromatic inside rear view Mirror) is intended dim the reflecting light in the rear view mirror. The forward facing sensor detects brightness of the surroundings, while the rearward looking sensor is for the light from the rear. The strength of the light in the rear sensor is used by the mirror to adjust the shading. It ranges from 7 to 85%. 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. 

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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 Dimming ON/OFF Button :
1. | Pressing and holding the Feature Control button for more than 3 but less than 6 seconds turns the auto-dimming function OFF which is indicated by the green Status Indicator LED turning off. |
2. | Pressing and holding the Feature Control button again for more than 3 but less than 6 seconds turns the auto-dimming function ON which is indicated by the green Status Indicator LED turning on. •
| The mirror defaults to the "ON" position each time the vehicle is started. |
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Other information:
Front air bags
Front air bags are designed to inflate
in a frontal collision depending on the
severity of impact of the front collision.
Side and curtain air bags
Side and curtain air bags are designed
to inflate when an impact is detected by
side collision sensors depending on the
severity of impact resulting from a side
impact collision.
Although the driver’s and front
passenger’s ..
1. Make sure you have the smart key in
your possession.
2. Press the Door Unlock button (2) on
the smart key, press the button on the
front door handle or touch the door
unlock sensor inside of the front door
handle to unlock the doors.
3. All of the doors will unlock. When the
doors unlock, the hazard warning
lights will blink two times.
The door handle button will only
operate when t..