1. M

    Facelift S3 - Front wheels spinning in 1st and 2nd gear - Haldex issues?

    The other night driving home I noticed it, really bad wheel spin when flooring it in 1st and 2nd. Along with a fair bit of torque steer, Kind of felt like the front wheels were skipping, really juddering, and didn't feel at all like the rears were kicking in to help shove the car forward like it...
  2. Z

    Haldex Pump Faulty - Internal System Fault VAG Code 16671

    Evening all, I've owned my S3 for the last 2 months and ever since ownership, the 4WD system hasn't worked. When I purchased the car, I plugged in my OBD reader and noticed the following code was flagged: 16671 - Haldex pump faulty - internal system fault. After scouring the web for answers, I...
  3. MPH

    Four-Wheel Drive with Haldex Coupling Design and Function 2023-12-07

    Haldex Coupling Information
  4. MPH

    GEN1 VAG Haldex oil change 2023-12-07

    Haldex Oil Change
  5. C

    Monitoring haldex torque split

    First post :) I've recently started racing my 2018 S3 at autocross, and am planning mods for coming events as well as for tracking in the near future. Anyways, I've been doing research on the haldex and was wondering if there was any way I could monitor the torque being sent to the front and...
  6. T

    Flashing Traction Control light

    Hi, I’m new to the group and have a plaguing problem with my 2017 TTS (I’ve posted here aswell as the TT forum being the same engine as S3, sorry if I shouldn’t have). It has a stage 1 ECU/TCU from Unicorn Motor Developments producing 376bhp. I purchased the car with maps already installed in...
  7. T

    Flashing Traction Control light after 40k service@Audi

    Hi, I’m new to the group and have a plaguing traction problem with my 2017 TTS. It has a stage 1 ECU/TCU from Unicorn Motor Developments producing 376bhp. I purchased the car with maps already installed in 2021 and the car was rapid quick , the TC light barely ever flashed in the dry under...
  8. S

    S3 Haldex Issue

    Hello, Last month I bought brand new Audi S3 8Y. Before 3000km mileage I changed oil & filters in the engine at dealership. After 3500km mileage I noticed my rear wheels are not engaging (no traction, TC icon on, slippery on acceleration). I contacted my dealership but they can take my car for...
  9. Rip

    Sold Audi S3 8V Rear Differential 0CQ525010 L (Latest revision, under 10k miles) - £550

    **Just listed on eBay also** **Please WhatsApp/text 07743427201 as I don't get notification emails here** I bought this a couple of years ago to replace the one in my Audi S3 8V but never actually got around to it and now I've sold the car I have no use for it. When I bought it I was told that...
  10. R

    Haldex/Propshaft issues.

    Hi all, It’s been a long time since I’ve posted on here but once again I’m here for some help regarding my haldex issues. Had the car in the morning at a local specialist to diagnose why the traction light was flickering under acceleration and a juddering from the rear wheels, I was told the...
  11. johnlyckdal

    Haldex, ABS and ESP issues

    Hello! Recently bought an audi a3 1.8t Quattro, with the owner saying that the 4wd was disabled, just clocked over 180 000km. He said he had pulled a fuse, and even gave me new ones to put in once I hade changed the haldex oil and filter. While pulling the fuse, I'm guessing ESP and ABS was...
  12. S

    Hesitation on gear change

    Hope someone can help. Audi s3 2016 s tronic saloon The other day from standstill I floored the peddle to the ground, i was in manual dynamic mode. I shifted early from 1st gear to 2nd at around 3000 revs but when i went to shift the revs dropped and it seemed like the car cut the power (no...
  13. KeepItTidy

    I Upgraded My S3 to AWD – L.P

    I purchased an 2018 S3 Sedan about 4/6 weeks ago from a (non Audi) dealership. The car popped up online on a Thursday evening , I went to Go look at it the next day and fell in love. If had all the options on my list and then some. Ara Blue, virtual cockpit, SS seats, Pano roof, keyless...
  14. tchoeA3

    Haldex Traction Control

    Hello everyone, I have a 2016 Pre facelift A3 Quattro, with a 118,000km. My A3's Haldex Quattro system seems to not be working. Only my front wheels spin during acceleration in snow and wet roads. Took a video to confirm and did hard acceleration in snow and observed that no power is being...
  15. AlexTr

    Switch off rear wheals using cruise control

    Hi everyone! Could someone help me.. I have info, that using cruise contol and it is connectod to fuse 41 some how, when you reach some speed(e.g. 50mph) - then 44 fuse could be disconnected.. Could someone share info?
  16. Atrus5

    Haldex locked

    Pardon me for posting my Golf R question here but researching online it looks like there is expertise here since Audi uses more Haldex than VW and the S3 is a similar setup to my car. (I do have a Q7 and my son's S4 stores in my shed and I just sold my A4 - which I loved... so hopefully you...
  17. J

    Awd haldex controls module fault

    Hi all, 1st post on here... I have a S3 8P that has come up with an ESP fault. And has stayed on the dash permanently I took the car at a local Audi specialist and they have said that the Haldex control module is throwing up the fault and requires to be replaced...I’ve been quoted £1600...
  18. J

    Need help with propshaft coupling bolts

    I cant find any aftermarket places to buy new t09 propshaft coupling bolts as 2 of mine maraculously disapeared one day, it's for the rear. I've also got a huge crack in my haldex pump but thats a seperate issue. Appreciate any help I can get and I'm also in Perth, Australia
  19. Kramonket

    Haldex service kit s3 8l

    Hello you very knowledgeable lot. I'd need to find a haldex filter and oil for my s3 8l. Where can i find this? anyone have any links please?
  20. itchyhippo

    Audi S1 - High Pitch rotational noise under acceleration

    Good Evening! I have a 2015 Audi S1 and under heavy/full acceleration I get a rotational sounding high pitch 'ch-ch-ch' noise that increases with road speed. The noise is ONLY present under acceleration with Quattro enabled. As soon as I pull the fuse on the Haldex, the sound disappears. -...