DIY Windshield Washer Pump Repair / Replace (if needed) Lots of Pictures

Thanks for the post

Thanks for this DIY. I am following it in approximation for an M3.

Just wanted to share my experience with trying to take the pump apart. I tried the pry method with a thin screwdriver, no luck. After about an hour of trying I smashed the **** out of it with a hammer. My logic being if I couldn't get it open to repair it I might as well see what it looked like inside.

The motor turned out to be completely rusted out and bound up; but after a bit of jimmying I got the armature free. So I could have fixed it.

You will need to vice clamps that you can twist separately with a lot of forced to properly get this thing apart if it is seized. Prying will probably not work like it did for the OP.

You can buy one for $8 bucks. But if you like a challenge go for it. Great DIY

Great DIY

My washers aren't working. Any chance the lines could be frozen if the tank isn't? It's been in the teens for a week here.

I guess the next step is to test the voltage with a multimeter, then go from there.

Originally Posted by scsnospam

My washers stopped spraying suddenly. I first got a warning about low washer fluid level, went out and bought some fluid and poured in about 0.5 gallon. Tried to spray after a couple of days, nothing. Not even relays clicking, or motor trying to turn.

If I check the voltage on the cable connector with a very good multimeter, it reads 9.6V even when the car is off, no key in ignition. On turning on, and clicking the wheel wand for spray, no change in voltage, still about 9.6V.

I read somewhere that the wiper relay could be bad in the E-box.
1. Does the wiper relay also control spray motor?
2. Can i test the relay before purchasing replacement? Can i swap in another relay from the e-box?
3. If I have to replace the pump, will any aftermarket pump be ok?

thanks.

Did you ever figure out what the problem was? I'm having the same issue.

I recently bought a 2005 330i. Mine came with headlight washers and they ARE working but the windshield washers are NOT working. I checked to voltage on the windshield washer connection and it reads 9.3V even when the car is off and the key is out of the ignition. The headlight washers read 0V when the car is off and the key is out of the ignition.
I checked the fuses, they are all fine.

Guys,if you pull out the motor you'll see there is a little rubber washer between the motor spindle and the bottom of the plastic container.I put some bath tub silicone on the washer and put the motor back in now the little square weep hole is not leaking anymore.

+1 on the "Great Post". Fixed my washers in 10 mins.

Thanks