1.Disconnect the negative (-) battery terminal.
2.Remove the inside rear view mirror cover (A).

3.Remove the rain sensor cover (A).

4.Separate the auto defogging sensor connector (A) and remove the auto defogging sensor (B).

5.Install in the reverse order of removal.
Ambient Sensor
HeaterHyundai Santa Cruz 2021-2025 Owners Manual: Electrochromic Mirror with 
Homelink System
   Your vehicle may be equipped with 
a Gentex Automatic-Dimming Mirror 
with an Integrated HomeLink® Wireless 
Control System.
During nighttime driving, this feature 
will automatically detect and reduce 
rearview mirror glare. The HomeLink® 
Universal Transceiver allows you to 
activate your garage ...
   
Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Rail Pressure Sensor (RPS)
    - Description
 Installed on the delivery pipe, the Rail Pressure Sensor (RPS) measures
 the instantaneous fuel pressure in the delivery pipe. The sensing 
element (semiconductor element) built into the sensor converts the 
pressure to voltage signal. By using this signal, the ECM controls the 
 ...