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  1. #201
    Active Member One Ring
    Join Date
    Apr 05 2018
    AZ Member #
    416664
    Location
    Bayarea

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    1. How you discovered you had the issue : i tried to launch the car and the front tires just spinning while the rears slowly kicked in
    2. Mileage 30860
    3. Model year 2015
    4. Any error codes 16670 - all wheel drive c1113 07 [008] was the code that i got
    5. What was done to fix it, and was it under warranty? I showed them the codes and they said there was nothing wrong so i launched that shit till my front tires were burning and then they said they will take a look at it, i got a call few hours later saying they are replacing the rear dif and yeah luckily it was under warranty

  2. #202
    Registered Member One Ring
    Join Date
    Apr 26 2016
    AZ Member #
    372395
    Location
    Sanford, FL

    Another Haldex failure here; dealership foreman was giving me a hard time telling me was"normal operating behavior" of the car and his 17 years of experience. I had to convince him to get another S3 from the lot to show him wrong. Eventually, he gave up and book me for an appt.

    1. How you discovered you had the issue : I launched the car and the front tires spinning for couple seconds, then engine buckles and catches on again. I do remember the first time it happened, I heard a loud thump sound.
    2. Mileage 30166
    3. Model year 2015-Haldex version G
    4. Any error codes 16670 -No error codes from VCDS
    5. What was done to fix it, and was it under warranty? I am still waiting for the full diagnosis of the system and it should be under warranty- no tune, fully stock.

  3. #203
    Active Member Two Rings
    Join Date
    May 20 2011
    AZ Member #
    75771
    Location
    Fl

    Glad to know I'm not the only one having issues with the dealership replacing this Haldex even after you show them the code.

  4. #204
    Active Member Two Rings
    Join Date
    Oct 25 2016
    AZ Member #
    383911
    Location
    West Hollywood/ California

    Haldex repair kit fail

    Quote Originally Posted by TCHUN003 View Post
    Seems like there are increasing cases of haldex failures.
    If you've had haldex issues, post your:

    1. How you discovered you had the issue
    2. Mileage
    3. Model year
    4. Any error codes
    5. What was done to fix it, and was it under warranty? I hear they are replacing the units with the ones from 2017's?
    1. under medium to hard acceleration from a stop in Dynamic sport mode with t/c still on (shifter in S) the front tires began slipping with flashing tcs light happening around 4500 rpms. The first time I noticed it, the road was slightly damp and I was making a left turn from a stop. At the next light, I repeated and noticed it again. Knowing that this has been an issue, I decided to go ahead and conduct a Launch Control test. The result was a complete FWD burnout which left two very apparant tire marks. Well atleast the front LSD is working good, but the rear tires didnt seem to engage whatsoever.

    2. Began noticing this at around 26k miles and had just brought my car in for service about 2 months ago.

    3. 2016 black optics (not sure of the differntial/haldex code)

    4. cant remember exact error code- invoice still in my backseat at the dealer and will update after I pick up the car.
    Upon arriving to the dealer at Audi of West Covina I informed them of my situation. The service advisor there was friendly, but mentioned only being an employee of Audi for one year after being with Mercvedes-Benz and was not very familiar with the Haldex system. However, I was able to take one of the lead techs for a test drive.

    Around the corner from the dealership, I made a right and with the car in sport mode and laid my foot into the throttle smoothly but firmly. Like clockwork, flashing tcs light came on the dash and wheel spin was detected but I got little reaction from the tech. Made another right on a quiet street and brought the car to a standstill. Without launching, I gave the same firm predal input and got the excessive wheelspin. Dry pavement, from a standstill, traction control on, sport mode (shifter in S) TC still enabled. Still no reaction from the tech. Kinda perplexed, I asked him "did you notice that?" His reply- "I'd need to test drive a few other cars and compare them to yours, but keep in mind that we aren't able to drive the cars very hard".

    Not trying to throw anyone under the bus, but there is nothing needed to compare here. I took a picture of the burnout I did with all the rubber I laid on the ground by my house but didnt even bother to show him. 2 days later, the dealer called back and said that an error code for the haldex pump did come up and that they were going to use the Haldex replacement kit. Good I thought.
    I came back to pick my car up the following day and as my invoice stated- "found haldex pump issue" replaced the pump according to TSB. Test drove the car and is now operating as originally designed and replaced parts under warranty. Great! I left the lot all smiling to have my baby working the way she's supposed to and drove 5 minutes down the road before finding an empty parking lot to see if they really fixed the problem. I engaged launch control, released the brake pedal and completely smoked the front tires. The issue persist.

    That same night I took the car over to a friend who is an Audi tech. After going over the paperwork, for starters we noticed that the inbound mileage was no different than the outbound mileage meaning that they did not infact test drive my vehicle. We pluged in VCDS and scanned for a set of values- a total of 5 were supposed to show up- Zero showed up. There was no proper file uploaded to the TCU.

    5. After the repair haldex kit failed my buddy and I went over a few different scenarios. A) the software they uploaded for the haldex system was improperly uploaded or maybe a driver failed and the service department didn't properly adapt the new system. B)possibly a fuse was out. C)The replacement Haldex kit was fautly. But when I returned home later that night it dawned on both of us that we had forgotten to check the tire tread depth on all four tires.
    Due to the sensors in the haldex system which measure the rotational force and rolling resistance in each wheel, if one tire has substantially more wear than the others, it can definitely show false readings supposedly throw the whole Haldex out of whack. Due to this, I now believe that my haldex is potentially in "limp mode" even though it has been replaced.

    I've had all but 1 tire replaced under warranty under ownership and with 26,000 miles on the car- shame on me but 3 tires had less than 10,000 miles on them while the sole remaining tire had the full 26k on it. With 3 tires reading approximately 7/32nds of tread depth wear, the left rear tire was reading 2/32nds! I was planning to take the car to a different socal dealership with more experience on this issue but was informed that before they can really resolve the problem- the first step would be me replacing the tire. The next day the tire was replaced, the fault codes cleared, Launch control engaged- FAIL once again. I'm kinda scrathcing my head here and the techs don't really know whats up either.
    My car is currently at Pacific Audi and since the repair kit is the latest update Audi has released to resolve the issue, the've now called regional rep in to take a look. There is another S3 at the dealership with the same issue. Haldex replacement kit has not fixed the issue. I'm pretty bummed to say the least.

    Forgot to mention that my car is 100% stock

    Ben

    Performance Liaison | Studio RSR

    e-mail: info@studiorsr.com
    phone: 844-991-5582
    Last edited by Benjamin Reese; 05-14-2018 at 10:51 PM.

  5. #205
    Active Member Two Rings
    Join Date
    Feb 11 2018
    AZ Member #
    413843
    Location
    Mooresville, NC

    Quote Originally Posted by Benjamin Reese View Post
    The result was a complete FWD burnout which left two very apparant tire marks. Well atleast the front LSD is working good, but the rear tires didnt seem to engage whatsoever.
    This is odd, since the S3 does not have a limited slip differential......
    '15 S3 Sepang Blue || Superpro RSB || APR Intercooler || JB4 || Resonator Delete

  6. #206
    Active Member Two Rings
    Join Date
    Oct 25 2016
    AZ Member #
    383911
    Location
    West Hollywood/ California

    S3 Haldex fail

    Quote Originally Posted by MadMen View Post
    This is odd, since the S3 does not have a limited slip differential......
    I'm told there are multiple limited slip differentials in the S3.

  7. #207
    Active Member Two Rings
    Join Date
    Feb 11 2018
    AZ Member #
    413843
    Location
    Mooresville, NC

    Quote Originally Posted by Benjamin Reese View Post
    I'm told there are multiple limited slip differentials in the S3.
    They have XDS+, which is a 'simulated' limited slip. It really only works in cornering by applying brake pressure to the inside spinning wheel - unlike a true mechanical limited slip that will send power to the non spinning wheel.
    '15 S3 Sepang Blue || Superpro RSB || APR Intercooler || JB4 || Resonator Delete

  8. #208
    Registered Member One Ring
    Join Date
    Oct 01 2015
    AZ Member #
    359065
    Location
    Palm City, FL

    1. How you discovered you had the issue: Tried LC and just spun the front tires for a few seconds. At first I thought it was the brand new tires but a thousand miles later I still just spun the fronts.
    2. Mileage- 39k
    3. Model year - 2015, 100% stock
    4. Any error codes - I'd have to check the service summary for the codes the dealer found.
    5. What was done to fix it, and was it under warranty? After the dealer spending about 20 minutes wanting to blame the tire (Hankook Ventus V12 EVO2 XL) I took a technician for a ride. At the first traffic light, I floored it and lost traction at about 3k rpm in first gear (no launch control used). He instantly agreed there was a problem. The dealer kept the car, found TSB then some error codes and replaced the unit under warranty... it launches without issue now. I was a little upset it came to having to drive around a technician to convince the dealer to look at the car but the end result works with me.

  9. #209
    Veteran Member Three Rings Spinnetti's Avatar
    Join Date
    Dec 10 2004
    AZ Member #
    4453
    Location
    Dallas, TX

    Quote Originally Posted by Dc779a View Post
    https://m.youtube.com/watch?v=eaNeUrZp0Ek

    Took a short video, keep in mind I have decent tread on oem conti summer tires, what do you guys think, seems the Haldex is not working on my S3?!
    Yeah, I agree. seems excessive. Mine is Uni Stage 1+ and my fronts squeak and roll over maybe once (which I expect given the weight transfer to the rear) but it just hooks and goes. Shouldn't be laying down a patch with the fronts.
    2015 S3 - Unitronic Stage 1+ ECU/TCU, Neuspeed R sway bar links, 15mm F / 20mm R Spacers , Tint, Audi rings, lots more coming.
    2008 R8 V8 Manual - Unitronic Stage 1+, Avior Exhaust, 15mm Spacers, Puddle lights
    1991 LS400 body / 1999 GS400 driveline - Lemons race car; Literally every part is modified

  10. #210
    Active Member Two Rings
    Join Date
    Oct 25 2016
    AZ Member #
    383911
    Location
    West Hollywood/ California

    Quote Originally Posted by MadMen View Post
    They have XDS+, which is a 'simulated' limited slip. It really only works in cornering by applying brake pressure to the inside spinning wheel - unlike a true mechanical limited slip that will send power to the non spinning wheel.
    I wasn't trying to get overly technical about the LSD system, but I know what you're referencing. If the XDS+ system works by applying pressure to the brakes, how does that explain the 2 equal tire marks left by the two front tires? I'm not a tech so I'm trying to get a better understanding of the e-dif systems. All I know if, Launch control engaged- the front's completely light up. I took a photo but it won't seem to show the link in my post.

  11. #211
    Active Member Two Rings
    Join Date
    Feb 11 2018
    AZ Member #
    413843
    Location
    Mooresville, NC

    Quote Originally Posted by Benjamin Reese View Post
    I wasn't trying to get overly technical about the LSD system, but I know what you're referencing. If the XDS+ system works by applying pressure to the brakes, how does that explain the 2 equal tire marks left by the two front tires? I'm not a tech so I'm trying to get a better understanding of the e-dif systems. All I know if, Launch control engaged- the front's completely light up. I took a photo but it won't seem to show the link in my post.
    Not sure, which is why it's very interesting that it behaved like an LSD.
    '15 S3 Sepang Blue || Superpro RSB || APR Intercooler || JB4 || Resonator Delete

  12. #212
    Veteran Member Three Rings Spinnetti's Avatar
    Join Date
    Dec 10 2004
    AZ Member #
    4453
    Location
    Dallas, TX

    XDS does the same thing with brakes that a normal LSD does with gears or clutch packs - shifts torque from the spinning wheel to the non-spinning wheel when it reaches some percentage of difference in torque. With enough power it will spin them both. Issue here is, the Haldex is not distributing torque to the rear so none of them would spin (unless you have enough power to spin all 4 of course)
    2015 S3 - Unitronic Stage 1+ ECU/TCU, Neuspeed R sway bar links, 15mm F / 20mm R Spacers , Tint, Audi rings, lots more coming.
    2008 R8 V8 Manual - Unitronic Stage 1+, Avior Exhaust, 15mm Spacers, Puddle lights
    1991 LS400 body / 1999 GS400 driveline - Lemons race car; Literally every part is modified

  13. #213
    Registered Member Three Rings
    Join Date
    Feb 11 2015
    AZ Member #
    314727
    Location
    New Jersey
    Items for Sale

    I have the "F" rear

    And now I have the UM Haldex tune and I still get some wheel spin not as much as before, but I am stage-2+ ECU / Stage-2 TCU w/Meth.

    Did the tune completely fix it, no. But it did make it feel more planted and more of a push then a pull.

    I have replaced:

    Pump
    Haldex Controller with latest revision and software
    Rear transaxle w/used low mileage unit (19K).

    Is it possible that the used rear had the same issue as my first one maybe. Looking for a L or M version now.

  14. #214
    Active Member Two Rings
    Join Date
    Feb 11 2018
    AZ Member #
    413843
    Location
    Mooresville, NC

    Quote Originally Posted by Spinnetti View Post
    XDS does the same thing with brakes that a normal LSD does with gears or clutch packs - shifts torque from the spinning wheel to the non-spinning wheel when it reaches some percentage of difference in torque. With enough power it will spin them both. Issue here is, the Haldex is not distributing torque to the rear so none of them would spin (unless you have enough power to spin all 4 of course)
    XDS+ only functions during turning though?
    '15 S3 Sepang Blue || Superpro RSB || APR Intercooler || JB4 || Resonator Delete

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