the headlight washers on my 98 LS400 have never worked since i bought the car a year ago.
I presumed the motor was kaput, which didn't bother me so forgot about it.
imagine my surprise when driving through town today the headlight washers suddenly kicked on, and stayed on!
screenwash covered the whole front of the car! the motor just ran and ran until the reservoir was empty and then kept running....
somehow made it home without the motor burning out or blowing the fuse.
Got under the car and disconnected the pump, cleaned the connector with wd40 and re-assembled thinking great, might work properly now.
nope, back to not working at all!
either way for 9 months it never worked, today it comes on of its own accord and jams on, and after disconnecting+cleaning the pump connector its back to not working !
can anyone give me an idea of what could be wrong? and how it SHOULD work?
my belief was the headlight washer should only come on (and pump 2 times only) when the button is pressed in the car, but a friend thinks it may also come on automatically under certain conditions... ?