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Unexpected traction control intervention

Dippy Jul 18, 2018

  1. Dippy

    Dippy Well-Known Member Team Monsoon Audi S5 Black Edition

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    I have sometimes seen the ESC light flash when I accelerate hard but the intervention has been brief. However last night the intervention was longer and unexpected. I accelerated from the lights, briskly but not particularly hard, and then was surprised at a loss of power for perhaps a second. I noticed the ESC light flashing. I think I may have lifted, and the light went off and power was back. This was in a straight line and off course the road was very dry. The rest of the way home I gave it a few blasts and all seemed fine again. I'll do a VCDS scan but in the meantime has anyone else had a similar experience?
     
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  3. voorhees

    voorhees Moderator Staff Member Moderator Team V8 Audi S5 S tronic

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    Tyres contaminated ? or the road for that matter ? or tyres wearing a bit ?
     
  4. Dippy

    Dippy Well-Known Member Team Monsoon Audi S5 Black Edition

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    Well my tyres are down to 3-4mm and I have felt that these Pirellis are losing grip the more they wear. Maybe the road was a bit dusty too.
    There were no DTCs in my VCDS scan and I also looked into the gearbox and AWD modules to see if there were any interesting counters which might have flagged something, but I couldn't find anything.
     
  5. voorhees

    voorhees Moderator Staff Member Moderator Team V8 Audi S5 S tronic

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  6. arad85

    arad85 Well-Known Member Team V6 Audi S5 Black Edition

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    Had that twice recently. My PS4S are around 4.5mm I think. Car didn't seem to squirm when it happened. Not scanned with VCDS though.
     
  7. Dippy

    Dippy Well-Known Member Team Monsoon Audi S5 Black Edition

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    Thanks @arad85 - that sounds the same - no squriming - totally unexpected. Car seems OK now so maybe its just a quirk of the traction system that we have to accept?
     
  8. arad85

    arad85 Well-Known Member Team V6 Audi S5 Black Edition

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    For reference, 6mm rear, 5mm front. I'm quite impressed with these PS4S's, I think I've put 9k on them so far. My old A3 quattro would go through a complete set of ContiSportContact 3's in 15k miles - and that was only 180hp...
     
  9. Dippy

    Dippy Well-Known Member Team Monsoon Audi S5 Black Edition

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    I really should say **** it and get a set of PS4S's but I am loathe to actually change my tyres whilst they still have tread. Maybe when the fronts reach 3mm I will.
     
  10. arad85

    arad85 Well-Known Member Team V6 Audi S5 Black Edition

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    I wondered if it could be a safety system activating due to a limit having been reached somewhere, but would have expected a code to be stored. I've lifted both times it has happened to me (only in the past month or two and I've been tuned for > 1 year) and wondered if it was anything to do with the weather. The first time it happened was about 9:30am so not too warm yet, but the other time was after 4pm from memory).

    I feel better that someone else is seeing the same - particularly with a different tune!
     
  11. Dippy

    Dippy Well-Known Member Team Monsoon Audi S5 Black Edition

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    No, I saw the "traction control" yellow symbol flash, so it was just a regular activation rather than any other safety feature. We are having an exceptionally dry period so maybe the roads are dusty. Then maybe with a bit of breeze the dust collects in patches and I hit one with my ageing tyres which have lost most of their grip?
     

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