Hyundai Elantra AD (2016-2020) Owners Manual: Limitations of the system
The driver must be cautious in the below situations because the system may not
detect other vehicles or objects in certain circumstances:
The vehicle is driven in inclement weather such as heavy rain or snow.
The sensor is polluted with rain, snow, mud, etc.
The rear bumper where the senso ...
Hyundai Elantra AD (2016-2020) Service Manual: Photo Sensor Description and Operation
Description
The photo sensor is located at the center of the defrost nozzles.
The photo sensor contains a photovoltaic (sensitive to
sunlight) diode. The solar radiation received by its light receiving
portion, generates an electromotive force in proportion to the amount of
radiation rece ...