cant fill washer bottle

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cossied
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cant fill washer bottle

Post by cossied » Sun Jan 07, 2018 2:03 pm

Hi, My low water indication is on but when trying to fill bottle it is as if it is already full ,I know it is slow to fill anyway but this is just not allowing anything down the filler pipe. With such a small hole to fill through I assume there is a breather hole somewhere or is there a filter in the black filler pipe that may be blocked ? Thanks

cossied
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Re: cant fill washer bottle

Post by cossied » Sun Jan 07, 2018 3:36 pm

Just took off the black plastic inner wing cover that goes around the filler cap and the reason I cant put any more water in is that it is full. I am assuming it is the level sensor that is faulty or become disconnected. The power for the headlight and rear washers must go through the sensor switch.

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Re: cant fill washer bottle

Post by marco_polo » Sun Jan 07, 2018 3:40 pm

If the car thinks the bottle is low on fluid, the ECU prevents the rear screen and headlight washers from firing to preserve fluid for the windscreen. It's a safety/visibility feature.
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cossied
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Re: cant fill washer bottle

Post by cossied » Sat Jan 13, 2018 6:32 pm

Spoke to BMW who topped up the washer bottle last week on a service (could be the cause because the car wasn't using BMW fluid before) and they say there is no sensor for low fluid ? Anybody now how the low fluid warning is activated . Thanks Ed

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Re: cant fill washer bottle

Post by THETYRANT » Sun Jan 14, 2018 9:39 am

I was going to say get back to BMW and give them a stern word it must have a sensor if it has a warning light!, also as I knew from when I removed my washer tank on E82 it did have one........however looking on F2x models on realoem they don't have a removable sensor like early cars!

Did some googling which showed that others are saying it has a sensor but its part of tank and not replaceable!, also more worrying apparently sensor can be damaged with certain types of washer fluid due to the way it works....however sometimes refilling with correct fluid can get it working again so I guess you need to run it dry or remove/refill it to see, other than that a new tank will be required to get warning off, rather than just changing a cheap sensor like on earlier cars if same occurred....madness!

Here is an article on it - https://www.newtis.info/tisv2/a/en/f20- ... r/HHl5rJly
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cossied
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Re: cant fill washer bottle

Post by cossied » Sun Jan 14, 2018 10:13 am

Thanks Tyrant for the info.

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Re: cant fill washer bottle

Post by SSN17 » Sun Jan 14, 2018 11:38 am

cossied wrote:
Sat Jan 13, 2018 6:32 pm
Spoke to BMW who topped up the washer bottle last week on a service (could be the cause because the car wasn't using BMW fluid before) and they say there is no sensor for low fluid ? Anybody now how the low fluid warning is activated . Thanks Ed
This is interesting, my car was recently in for a service at the dealers and within the week, I had the low washer fluid warning pop up. I used the fluid twice and with that it brought up the 'fluid low' sign. How much do they actually put in or are they just stingy and leaving it a few mm's above minimum?!
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