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  1. #1
    Active Member Two Rings
    Join Date
    Dec 18 2015
    AZ Member #
    366015
    Location
    Ohio

    Power Steering Hose Leak - B8 S5 Drive Select

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    Hi guys, I just bought a B8 S5 and it looks like Ive got some leaking from the power steering hose (pressure not return) to the rack. Thereís sludge around my hose at the connection, but fluid level is ok. Iíd rather fix the problem before it gets worse and flush. My question is, is the only fix for this replacing the hose or can I do something else to fix the leak at that spot? The hose itself I donít believe to be leaking. Iíve also been unable to find a DIY for this hose. I know the B8s had quite a few issues with the A4 and this hose, though I could let confirm if it also was an issue for the B8s S models with drive select. Any advice would be appreciated. Thanks.

  2. #2
    Senior Member Two Rings TEB's Avatar
    Join Date
    Sep 19 2010
    AZ Member #
    64431
    My Garage
    '70 Cutlass, MDX, Pilot
    Location
    Ponte Vedra Beach, FL

    Able to tighten the connection at all? Might be a little loose.
    2011 S4 6MT Ibis White|Panda Nappa|Titanium|Carbon|NAV|Sport Diff|B&O|Unitronic|Team Dynamics|Nitto|G-Force|Simpson
    (Gone)2004 S4 6MT Silver|Black|Carbon|Bilstein|Hawk|Magnaflow|ECS
    (Gone)1998 A4 5MT Black|Black|Bilstein|A8/S4 Brakes|APR Exhaust|AWE DTS|Intrax Extreme|Flik|GIAC|Etc

  3. #3
    Established Member Two Rings Jimcoily's Avatar
    Join Date
    Apr 06 2017
    AZ Member #
    397219
    Location
    Port Orchard, WA

    I replaced my power steering hard line that cracked a few months ago and when I did I also replaced the O-ring you can order it on amazon for $15. Just copy and paste "Mercedes (00-13) A/C O-Ring Expansion Valve 13.7x 2.5mm r171 w216 w220 w230" this is the O-ring I used on my 2011 S4.
    I think its 2 or 3 bolts that hold it in, use a flat tip to put it off. It will take some force to pop the hard line out but just work your way around it from side to side. Cut the old O-ring off, use some off the new power steering fluid as lubricant to slide the new O-ring on. I don't know the torque spec on the bolts, good and tight worked for me. You will also need about 20 ounces, you might be able to get away with 12 ounces.
    2011 Stasis Challenge - APR Stage 2 (V4) - Roc-Euro intake - APR 57mm - JHM 179mm - Eurocode Headers - Milltek Resonated Catback - JHM Flywheel & 3R Clutch - 2 Booster Seats - Baby On Board Sticker........



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