Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #1
    Join Date
    Dec 2012
    Location
    Palm Beach County, FL
    Posts
    397

    Wiper Fluid Still Not Working After Step 1

    So we replaced the pump, no issues, but still no bueno.

    I'll currently hard pressed to hear the sound that the trigger usually makes, because I'm pretty sure in the past I heard that.

    Is it possible the switch or fuse or some other electrical component is the issue?

    Was really hoping the pump would just fix it, ugh

    Sent from my ONEPLUS A6013 using Tapatalk
    __________________________________________________ ____
    2003 ZHP 4dr | 145,000 miles (ACTUAL before RIP) | BBS 17"
    Hankook Ventus V12
    Front: 225/45ZR
    Rear: 255/40ZR-17 Hankook Ventus V12 evo2 XL
    [ Staggered on square (17x8.5 +38) ]

  2. #2
    Join Date
    May 2020
    Location
    SF Bay, CA
    Posts
    1,266
    I'd start by checking the fuse, if it isn't blown then you can take the pump plug and use a multimetre to probe 12V across the terminals, when the stalk is pulled. If you don't see 12V then the switch could be faulty, or there is something else that is causing a break in the circuit.
    2004 BMW 330CI ZHP (well, technically ZAM)


  3. #3
    Join Date
    Jan 1970
    Location
    Lexington, KY
    Posts
    4,922
    Yep, find a way to see if voltage is going to the pump. Check fuse too.
    325i, 2005, 5MT, Silvergrey, leatherette, Sport package; CDV delete, KONI STR-T & KYB Excel-G, Weisslichts, Stewart H2O pump

    328i, 2010, 6MT, Spacegrey, dakota leather, M-sport packages; has a 330 intake but no tune - yet
    http://s900.photobucket.com/user/othibau/media/Junesig.jpg.html][IMG]http://i900.photobucket.com/albums/ac208/othibau/Junesig.jpg

  4. #4
    Join Date
    Dec 2012
    Location
    Palm Beach County, FL
    Posts
    397
    Ok so this is quite annoying...

    It seems the fuse for this was unplugged, so we plugged back in and voila, worked... I guess it didn't need a new pump... Maybe...

    Not so fast...

    So it turns out, when we plugged this fuse back in, it also activated my interior lights and trunk opening via key fob.

    Why does that matter?

    Well I think about two years ago I removed "a" fuse for those two components... I believe that also controls the glove box light.

    Why? Because I had a parasitic drain and I tested to discover the cause and that was it. So after unplugging back then, no dead battery before a while, and the WIPER WAS WORKING until several months ago.

    FYI in case you missed it, in the last several months I've had another issue with a good new battery dying on me, and could be ANOTHER parasitic drain.

    But this is all crazy... How could the wiper fluid work without that fuse I pulled, then it stops working, then we plug in another fuse, and now it works along with all the other components that caused the original parasitic drain?

    This is all super confusing, what's going
    Doesn't make any logical sense...

    I'll going to look for what fuse i pulled way back then, but either way, no matter what that was, or still doesn't make sense, unless someone is messing with me.

    Sent from my ONEPLUS A6013 using Tapatalk
    __________________________________________________ ____
    2003 ZHP 4dr | 145,000 miles (ACTUAL before RIP) | BBS 17"
    Hankook Ventus V12
    Front: 225/45ZR
    Rear: 255/40ZR-17 Hankook Ventus V12 evo2 XL
    [ Staggered on square (17x8.5 +38) ]

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