Indicator light for sprinkler is on. But sprinkler bottle is full and there is no leakage and sprinkler is working well. Sensor may be contaminated.
Is this a MOT failure?
Jan 31, 2016
10 Replies
"Sprinkler"?
You mean screenwash?
No, not an MOT fail at all. A tester might advise it, but probably not.
OK thanks. The 'screenwash' bottle is not easy accessible on my Saab
9000, you need to remove an undertray, so I leave it until onther day...
Is the rest of the car so well maintained?
I'm not sure I'd call a false-positive from a low-screenwash-level sensor particularly ill maintained. It probably just needs the prongs cleaning of a build-up of goop.
[...]
Indeed.
That would be more likely to cause a failure in the opposite sense - IOW, the light failing to illuminate when empty.
Many cars don't use a conductivity sensor for screen-wash any more because of its unreliability. An electronic sensor sits in a pocket and 'views' the presence or absence of fluid. The sensor can be removed without draining the container.
If it's a BMW one, sadly it is just as likely to fail however. ;-)
Chris
I am fairly certain that bmw use a float, so they should be pretty reliable, no idea about saab, I have only worked on one in recent years and it was a pile of s**te.
The header tank low-level sensor in our camper certainly got over- paranoid when it needed a clean.
Yebbut we're talking about a Saab 9000.
The header tank low-level sensor in our camper certainly got over- paranoid when it needed a clean.
Yebbut we're talking about a Saab 9000.
[...]
E46 uses some sort of electronic sensor. I was trying last weekend to fix one where the light was on all the time. I could pull the sensor out from the bottom of the full container without getting wet!
Interestingly, it's a two-wire device yet open- or short-circuiting the connector still left the light on.
Asking on various forums implied it was a common fault, but I couldn't find a fix. Owner is trading it in, so I gave up.
Chris
[...]
Hmm, 1995 9000 2.3T, feels like new, no rattles, very smooth and quiet.
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