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  1. #1
    Senior Member Two Rings
    Join Date
    Jan 14 2013
    AZ Member #
    107562
    My Garage
    2011 S4, 2013 Q5
    Location
    Oregon

    Just replaced CV axle, now ESP kicking in randomly?

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    Hello,

    I replaced my driver side CV axle today and took it for a test drive. ESP kicked on at random a few times and I lost all power. Since this happened immediately following the CV replacement, I'm sure it's not MAF related, which I've heard can also cause it. Does anyone have any ideas why ESP is kicking in?

    I've been trying to get this car in decent shape to sell for at least 6 months, and right when I get close to having it sorted, more shit breaks!!

    Help!

    Current Garage
    2018 Q7 3.0T Prestige
    2011 S4, APR Stage II

  2. #2
    Veteran Member Four Rings vavJETTAw36's Avatar
    Join Date
    Jul 04 2012
    AZ Member #
    96276
    Location
    Woodbridge, VA

    Tone ring.


    Sent from my iPhone using Tapatalk

  3. #3
    Senior Member Two Rings
    Join Date
    Jan 14 2013
    AZ Member #
    107562
    My Garage
    2011 S4, 2013 Q5
    Location
    Oregon

    I've been dealing with buzzing brakes for years (abs kicking in). Are you thinking it's the tone ring on the new CV axle? Any way to get this to not happen?

    Current Garage
    2018 Q7 3.0T Prestige
    2011 S4, APR Stage II

  4. #4
    Veteran Member Four Rings vavJETTAw36's Avatar
    Join Date
    Jul 04 2012
    AZ Member #
    96276
    Location
    Woodbridge, VA

    Just replaced CV axle, now ESP kicking in randomly?

    Have you checked the abs sensor?? Monitor it in vcds


    Sent from my iPhone using Tapatalk

  5. #5
    Senior Member Two Rings
    Join Date
    Jan 14 2013
    AZ Member #
    107562
    My Garage
    2011 S4, 2013 Q5
    Location
    Oregon

    I have and received the message "No fault codes found" when scanning the ABS module specifically.

    Current Garage
    2018 Q7 3.0T Prestige
    2011 S4, APR Stage II

  6. #6
    Veteran Member Four Rings Yuppie's Avatar
    Join Date
    Feb 14 2005
    AZ Member #
    5283
    Location
    Houston, TX/ Richmond, VA

    Had a similar issue and a friend narrowed it down to the tone ring.
    2001 S4 Sil Sedan ASP Stage 3-Current
    2001.5 S4 Sil Avant Stage 3 IE Rods, CNC 2.8 heads, BW RS6 Turbos-Current
    2001.5 S4 Casa Sedan Built Motor TiAL 770-Current
    2002 S4 Pearl White Avant Stock--SOLD
    2000 S4 Nogaro Sedan EPL Stage III--SOLD
    2000 S4 Brilliant Black Sedan MTM Stage III--SOLD
    2001.5 Nogaro Sedan JFonz Tune Franken F21s--SOLD
    2001.5 Nogaro Sedan AWE Stage III--SOLD
    2001.5 Nogaro Sedan AWE Stage III--SOLD
    2001 Brilliant Black Sedan S4-K04/Rs6 Hybrid custom tuned Vast--SOLD

  7. #7
    Established Member Two Rings
    Join Date
    Aug 21 2008
    AZ Member #
    32192
    Location
    California

    I had similar issues with my ESP, however, it only happens when I full throttle it. When I do this the ESP light on the dash would flash and power would cut on/off. I unplug the fuse, I believe it's #42, for a couple of days and plug the fuse back in, and ever since the ESP light doesn't flash every time I punch it. I don't know why it stop, perhaps by unplugging the fuse it reset the memory banks.

    Try unplugging the fuse and see if that works.

  8. #8
    Senior Member Two Rings
    Join Date
    Jan 14 2013
    AZ Member #
    107562
    My Garage
    2011 S4, 2013 Q5
    Location
    Oregon

    Quote Originally Posted by cityfox View Post
    I had similar issues with my ESP, however, it only happens when I full throttle it. When I do this the ESP light on the dash would flash and power would cut on/off. I unplug the fuse, I believe it's #42, for a couple of days and plug the fuse back in, and ever since the ESP light doesn't flash every time I punch it. I don't know why it stop, perhaps by unplugging the fuse it reset the memory banks.

    Try unplugging the fuse and see if that works.
    I will try this. Yesterday, I picked up a socket and cinched down the bolt holding in the axle as tightly as I could (the replacement bolt was a hex head and I didn't have a big enough socket for it, so I had to use a crescent wrench initially). After cinching it down, I took it for a drive, and it drove like crap. I thought I was going to lose all stopping power with how bad ABS was kicking in. Then I took it on a 45 mph stretch of road and my ESP light flashed, then went solid. I only regained power after I slowed to 10-15 mph. Now the ESP light is solid.

    Any ideas? Could this be due to using a non-OEM CV axle? I've replaced my wife's allroad CV axle with the same brand and didn't have any problems. Thoughts?

    Current Garage
    2018 Q7 3.0T Prestige
    2011 S4, APR Stage II

  9. #9
    Established Member Two Rings
    Join Date
    Jan 20 2014
    AZ Member #
    139561
    Location
    Woonsocket

    Did the axle have the tone ring on it? I've seen a few missing it. If you have the push in style ABS sensors give it a couple taps with a mallet to make sure it's fully seated.

  10. #10
    Veteran Member Four Rings Tjtalan's Avatar
    Join Date
    Jul 19 2014
    AZ Member #
    265689
    Location
    Tulsa

    I have seen cheep axles with the tone rings off center. Never got faults just a slight variation in wheel speed is all it takes.
    Last edited by Tjtalan; 07-15-2016 at 10:35 AM.

  11. #11
    Senior Member Two Rings
    Join Date
    Jan 14 2013
    AZ Member #
    107562
    My Garage
    2011 S4, 2013 Q5
    Location
    Oregon

    Quote Originally Posted by Nichtknicken View Post
    Did the axle have the tone ring on it? I've seen a few missing it. If you have the push in style ABS sensors give it a couple taps with a mallet to make sure it's fully seated.
    Good suggestion. I'll get the car up on jackstands and give it another go. It's possible I rushed the job. Thanks for the help. I did verify that the tone ring is present, but the fitment did seem a little different compared to OEM. Maybe it's just me.

    Current Garage
    2018 Q7 3.0T Prestige
    2011 S4, APR Stage II

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