From factory headlight washer does it's job together with windscreen washer whenever the headlights are on, thus always a burst for the first windscreen wash after engine startup, then a burst for every 10th windscreen wash.
I wanted have some more control - especially in subzero temperatures - actually headlight washer is rarely needed.
Now -
For other switch locations see attachment for part numbers. Switch illumination (B342) taken from an adjacent switch.
Reference wiring diagram --> https://t6forum.com/downloads/washers-wipers-wiring-diagram.128/
Did some investigation if the washer could have been activated the same way as on more modern platforms - long press of windscreen washer (or even "double click"). Seems that that kind of functionality isn't available in T6 BCM.
I wanted have some more control - especially in subzero temperatures - actually headlight washer is rarely needed.
Now -
- After engine start headlight washer relay is disconnected by "bistable relay" contact being "normally open".
- Pressing a button on dash "activates" the headlight washer - relay closes and turns on yellow light on switch
- To run the headlight washer - run windscreen washer with headlights on - the headlights washer runs every time when windscreen washer is triggered
- Another press of the button deactivates headlight washer
For other switch locations see attachment for part numbers. Switch illumination (B342) taken from an adjacent switch.
Reference wiring diagram --> https://t6forum.com/downloads/washers-wipers-wiring-diagram.128/
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