The electric rearview mirror automatically controls the glare from the headlights of the car behind you in nighttime or low light driving conditions.
When the engine is running, the glare is automatically controlled by the sensor mounted in the rearview mirror. The sensor detects the light level around the vehicle, and automatically adjusts to control the headlight glare from vehicles behind you.
Whenever the shift lever is placed in R (Reverse), the mirror will automatically go to the brightest setting to improve the driver’s view behind the vehicle.

To operate the electric rearview mirror:
CAUTION
When cleaning the mirror, use a paper towel or similar material dampened with glass cleaner. Do not spray glass cleaner directly on the mirror as that may cause the liquid cleaner to enter the mirror housing and damage the rearview mirror.
Day/Night rearview mirror (if equipped)
Blue Link® center (if equipped)Hyundai Tucson (LM) 2010-2015 Owners Manual: ESC operation
ESC ON condition
When the ignition switch is in the ON position, the ESC and the ESC OFF indicator
lights illuminate for approximately three seconds and goes off, then the ESC is
turned on.
If this light stays on, your vehicle may have a malfunction with the ESC system.
Have your vehicle che ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Antenna Repair procedures
Inspection
Antenna Cable
1.
Remove the antenna jack from the audio unit and antenna.
2.
Check for continuity between the center poles of antenna cable.
3.
Check for continuity between the outer poles of antenna cable. There should be continuity.
4.
If there is no continuity, replace ...