Why the hell am I getting the Washer Fluid Low message?!

[e34.535i.sport]

Before you say it... It's not because its low!

It started the other day - the gong comes on at random times while driving to scare the **** out of me, every time I drive it now. I hate that thing.

The only sensor I can see is on the 'Intensive' washer fluid box. I unplugged it (or tried to) by pulling up on it and pulled out the big black thing its attached to (guessing this is a pump or something)... When the water came flowing out of the hole I quickly plugged the black thing back in the hole, held it and removed the electrical connector properly checked it and re-connnected it. The intensive washing thing hasn't worked since I bought it but it doesn't bother me in the slightest, I just want the gong and warning to F-off. If there's any ideas why the intensive cleaning is dormant however, I'd be interested to hear them.

Any quick fix or am I looking at a faulty sensor here? I should probably clean out the 'tanks' anyway to be honest. The jets on the bonnet keep getting blocked somehow. Probably time for new ones but they are expensive for such small parts...

The tanks aren't leaking just incase thats a suspect.

[nirvana19]

Its a simple float sensor somewhat similar to the coolant level one and is on the side of the tank. Once I installed the sensor upside down and one my washers stopped working. In trying to figure out what the problem was, I realized the tank was empty (duh) and filled it. The washers worked and I had a "Washer Fluid Low" warning. turned the sensor over and all was good. It could be the sensor itself or the wiring (open circuit leads to warning), the sensor is on the side closer to the outside of the car (you) and towards the bottom.

[ThoreauHD]

It's a quick fix. Called a Washer Level Sender. Can pick it up at bavauto.com or your shackhole of choice.

Part # : 61 31 1 388 578 $ 24.95

[Phatty5BMW]

I think the wires are backwords or something is goofy with mine. I get low washer fluid when my tank is full and no message when its empty! Pisses me off..... :P

[Ferret]

I think the wires are backwords or something is goofy with mine. I get low washer fluid when my tank is full and no message when its empty! Pisses me off..... :P

On the early E34s, there was no guide for inserting the level sensor into the washer tank.

This means over time the washer sensor can rotate easily to a position on its side or upside down (which would make it gong every time the tanks full, but not while it's empty!)

Pull it out, take note of it's orientation as you do.

When it's in the correct orientation as you hold it out of the tank, the little float should be down in the swung down position. Not laying flat on top of the rest of the device.

I had this happen to me on both my 525i and original 535i sport...

[e34.535i.sport]

On the early E34s, there was no guide for inserting the level sensor into the washer tank.

This means over time the washer sensor can rotate easily to a position on its side or upside down (which would make it gong every time the tanks full, but not while it's empty!)

Pull it out, take note of it's orientation as you do.

When it's in the correct orientation as you hold it out of the tank, the little float should be down in the swung down position. Not laying flat on top of the rest of the device.

I had this happen to me on both my 525i and original 535i sport...

Cheers I'll look into that and get back! The big black thing came out fairly easy but I just jammed it back in when the water started spilling out!

[e34.535i.sport]

Thanks everyone for the input... Will report back soon as I can...

[leicesterboy15]

Also check the contacts on the float. I think it has contacts anyway, not sure if I'm getting confused with another car! Because its emersed in water you can get crap build up on the contacts to the point where they don't anymore! Give them a clean or just replace the sensor, they're quite cheap.

[repenttokyo]

the wiring harness was loose on my sensor, caused the same problem you are describing.

[Ferret]

Also check the contacts on the float. I think it has contacts anyway, not sure if I'm getting confused with another car! Because its emersed in water you can get crap build up on the contacts to the point where they don't anymore! Give them a clean or just replace the sensor, they're quite cheap.

Annoyingly they're a reed relay :P