View Full Version : Windshield Washer Reservoir - DIY wPics


Jamaican71
08-19-2006, 12:11 PM
Well after several annoying months of hearing the dreaded "Ding" only to discover yet again that my windshield wash reservoir is low, I decided to do something about it. There has been a leak somewhere in the system which caused the low fluid indicator to go off after just one to two days of filling.

After an exhausting search on this forum, I found very little information about the location of the reservoir in an e39, so I've decided to post up some pics and this little DIY of the project.

First off, you've got to jack the front passenger side and remove the wheel. (Please use a jack stand to support the vehicle) Then remove the inside fender panel using an 8mm socket on all the fasteners. There are also three "push locks" at the rear edge of the fender well. After breaking the first one, I pulled back the liner, reache in and pushed them out from the inside with a small screwdriver.

This photo shows the location of the reservoir with panel removed:
http://i26.photobucket.com/albums/c122/jamaican71/WinshieldWasherResevoir1.jpg

Pull off the fill hose and carefully disconnect the washer line from the pump(located at the bottom left of the next photo). Disconnect both electrical connections and clip the zip tie (if there is one) holding the wires to the reservoir. Remove the two bolts holding it with a 10mm socket, then simply pull forward to remove.

Photo 2:
http://i26.photobucket.com/albums/c122/jamaican71/WinshieldWasherResevoir2.jpg

Drain any remaining fluid into a clean container or discard if it is dirty. To remove the pump and level sensor from the reservoir, simply slide them out slowly. The pump should have a blue plastic screen on the end which may come off. Just shake it out of the tank to retrieve.

Clean the entire tank, inside and out, with a soapy water solution or mild degreaser. Perform a leak test on the tank. Simply plug all the holes with your fingers and blow hard!!:D Do the same leak test on the pump by plugging the outlet and blowing on the inlet. I discovered that my pump was leaking slightly at the housing connection. Rather than purchase a new pump, I simply covered the joint with plumber's teflon tape, then covered that with black electrical tape. The final photo, although blurry, shows the finished product re-installed.

Washer pump:
http://i26.photobucket.com/albums/c122/jamaican71/WinshieldWasherResevoir3.jpg

While you've got everything out, take the time to clean all the fittings and check for tears, etc. I used a little silicone spray to clean all the rubber grommets and used a dab of KY jelly to create a better seal. I also used a zip tie to fasten the fill tube to the tank as there was nothing before and it was a bit loose. Go ahead and clean the fender liner while you're at it with a good degreaser.

Installation is reverse of removal. I suggest a leak test before putting the liner back in. It's been 5 days and no leaks yet!!! BTW all photos were taken post fix.

Total time: 30-45 min.
Cost - $0-$2
Have Fun!

Edit: Still leaked from my "patch" but not nearly as bad. Did not realize how cheap the pump was, so I bought one and replaced it. No more leaky!

masghar
11-21-2006, 09:47 AM
I had the same problem. Followed the instructions and it is fxed now.

mookish
11-21-2006, 11:12 AM
That KY jelly works wonders doesn't it? Use only a DAB! Wouldn't wanna waste too much on the car!!!!

oekundar
11-21-2006, 11:14 AM
used a dab of KY jelly to create a better seal.



:lol

tominos
11-21-2006, 11:26 AM
whats the metal tube coming out of the side for?

RonaldH
11-21-2006, 05:08 PM
Thanks for the picture shoot. I had the leak and that's what I did at first, but the leak was actually around the grommet seal inside the pump. I recommend to those who have a leak of WW fluid, buy a new pump for $25 to install before taking all this apart. (I had to take the thing apart 3 times to get it right.)

Best,
RonH

halfbent
12-06-2006, 11:02 AM
Excellent DIY, thank you very much. I was dreading doing this but now after seeing its simplicity, its no big deal. Thanks again.

mduva
12-06-2006, 07:17 PM
Same here. The one in our 528i is leaking and needs to be fixed. These instructions will definitely come in handy!

scurl
12-06-2006, 09:29 PM
Mine's leaking but I think it's the hose that connects to the washer motor. For the time being I just turned the sensor upsidedown. Fortunately an e34's reservoir is right there behind the airbox.

scurl
12-06-2006, 09:30 PM
whats the metal tube coming out of the side for?

That thing ain't metal. Look at the closeup. That's the filler tube.

EdZorX
12-07-2006, 07:51 PM
Wow great thread, wish there were threads like this FOR EVERYTHING ON THE E39!! that would be SOOWEEEEEEEEEEEEEET. And to the KY jelly perv. HAHAHAHAHA that was funne =]

sublimefan187
05-11-2007, 05:59 PM
Great thread. I used this to replace the motor, i havnt had a problem with a leaky resevior...yet...hah. thanks a bunch mate.

chris

bene36e39
10-01-2007, 03:23 AM
Our E39 has been buggin me for this washer fluid draining issue. Every time after I would fill it up, it leaks to empty and leaves the blue puddle of pee on the floor. Very annoying.

I needed to get this fixed before winter and I found your thread. Thank you for a great writeup!

konlao
11-30-2007, 02:29 AM
I have the same problem. I fixed all the leak. Tested the pump. No electrical signal going to the pump. Checked the fuses. They are good. What else can I check? Please help.

Thanks,

Bob S
11-30-2007, 08:30 AM
Thanks for the great writeup with Pics! When I fill mine to the top, an amount of fluid roughly equal to what would be in the filler tube leaks out. My headlight washer pump split around it's perimeter, I used two-part epoxy around it and it's been perfect. I'm usually a "replace it" guy, but I had to try it.

Now, to track down the source of the steering wheel rake grinding now that I have the knee-pad and lower column shroud removed. Of course, now it's become intermittant and currently not making the noise...

skicat
12-09-2007, 01:16 PM
Hi from a n00b!

This is a great thread, and I'll be trying out this procedure in the next few days. My only nagging doubt is that in my case, I have washer fluid leaking from IN FRONT of the wheel, i.e. in quite a different place from where the pump/reservoir is. And I don't have headlamp washers either, so it can't be that. Hopefully I'll figure out what's amiss when I get it apart. Thanks again for taking the time to write this up.

[Not-allowed-to-use-smilies-on-the-BB-yet-so-this'll-have-to-do:-ThumbsUp-smilie-substitute]

wild321
12-24-2007, 03:03 PM
Great thread friend,i used this to replace the electric pump thanks