Description And Operation: Description: AUTOLAMPS

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

Autolamps is selected by rotating a rotary switch on the left steering column multifunction switch to the 'AUTO' position. When the lighting control switch is in the 'AUTO' position, a reference voltage from the BCM/GWM assembly flows through 4 resistors in the left steering column multifunction switch. The returned signal voltage is detected by the BCM/GWM assembly which activates the auto headlamp function to activate the headlamps and front and rear side/tail lamps.

The rain/light sensor receives a battery voltage output from the ignition relay in the BCM/GWM assembly. The rain/light sensor continually outputs a LIN bus message to the BCM/GWM assembly with information regarding the ambient light levels. When the ambient light level reaches a predetermined value, the BCM/GWM assembly activates the autolamps. The BCM/GWM assembly can also activate the autolamps when it receives information regarding rain fall from the rain/light sensor which subsequently activates the auto wipers function.