But [Muris] programmed the headlights to be powered at 70% during daytime conditions and switch to 100% when his sensor detects low ambient light conditions.

You can't turn off the proximity sensor on your iPhone, but if it's malfunctioning, try force-restarting your iPhone and cleaning around the sensor.

It was working fine. After the software update some 8-10 days back my phone’s auto rotate and proximity sensor are not working. In addition it is restarting itself.