Headlamp Washer Jets

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

When the engine is running and the BCM/GWM has received headlamps 'ON' LIN bus message from the lighting control switch, when the driver operates the wipers and washers control switch in the windshield wash position, the BCM/GWM assembly will initiate the headlamp washer sequence.

The number of headlamp washer operations in given period is limited to preserve the washer fluid in the washer reservoir. The BCM/GWM assembly then suspends headlamp wash activation for the next 10 minutes and three operations of the wash/wipe switch, with the headlamp power washers activated on the fourth operation of the switch and after the 10 minute period has expired.

If more than three windshield wash operation requested by the driver within the 10 minutes inhibit period, the BCM/GWM assembly will activate the headlamp washer on the next windshield washer sequence following the 10 minute period has expired.

The timer and event counter is cleared following an ignition cycle or moving the lighting control switch to 'OFF' then back to 'ON'.

When the driver moves the wipers and washers control switch to the windshield wash position and the headlamps are 'ON', the BCM/GWM assembly provides a ground for the headlamp washer relay in the right EJB which supplies power to the headlamp washer motor.

If the washer fluid level becomes low, the BCM/GWM assembly suspends headlamp washer operation to preserve the remaining washer fluid.