Your vehicle may be equipped with a Gentex Automatic-Dimming Mirror with a Z-Nav™ Electronic Compass Display and an Integrated HomeLink® Wireless Control System.
During nighttime driving, this feature will automatically detect and reduce rearview mirror glare while the compass indicates the direction the vehicle is pointed. The HomeLink® Universal Transceiver allows you to activate your garage door(s), electric gate, home lighting, etc.

(1) Channel 1 button
(2) Channel 2 button
(3) Status indicator LED
(4) Channel 3 button
(5) Rear light sensor
(6) Dimming ON/OFF button
(7) Compass control button
(8) Compass display
Automatic-Dimming Night Vision Safety™ (NVS®) Mirror (if equipped)
CAUTION
The NVS® Mirror automatically reduces glare by monitoring light levels in the front and the rear of the vehicle. Any object that obstructs either light sensor will degrade the automatic dimming control feature.
The auto-dimming function can be controlled by pressing the ON/OFF button:
1. Pressing the button turns the autodimming function OFF which is indicated by the green Status Indicator LED turning off.
2. Pressing the button again 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.
Z-Navâ„¢ Compass Display
The NVSâ„¢ Mirror in your vehicle is also equipped with a Z-Navâ„¢ Compass that shows the vehicle Compass heading in the Display Window using the 8 basic cardinal headings (N, NE, E, SE, etc.).
Blue Link® center (if equipped)
Compass functionHyundai Tucson (LM) 2010-2015 Owners Manual: Consumer information
This consumer information has been prepared in accordance with regulations issued
by the National Highway Traffic Safety Administration of the U.S. Department of
Transportation.Your HYUNDAI dealer will help answer any questions you may have as
you read this information.
HYUNDAI motor vehicles ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Battery Sensor Repair procedures
Removal
1.
Disconnect the battery negative (-) cable.
2.
Disconnect the battery sensor connector (A).
3.
Remove the battery negative (-) cable after removing the bolt (B).
Installation
1.
Install in the reverse order of removal.
Battery sensor cable installation bolt:
21.6 ~ 32 ...