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Thread: EPC Light On and Off

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  1. Exclamation EPC Light On and Off 
    #1
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    Hi Guys,

    I recently got myself a 2011 8P A3 Sportback S-Line 1.4T.

    I have had the car for about a month now, and I have noticed the EPC light coming on for a few seconds then going off. This has been happening on just normal driving to/from work.

    At times I have noticed a slight jerk / lag and the light comes on for a few seconds. Other times the light comes on when accelerating just normally.

    The spark plugs and coils have been changed but the same thing happens. There is no loss of power or anything when the light comes on, and no other lights come on. It has happened on different speeds like 30-40 km/h, 60-70 km/h and 90-100 km/h. I can just be cruising on the highway and the light comes on.

    Any help on what could be causing this will be highly appreciated.

    Thanks.
     
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  2. Re: EPC Light On and Off 
    #2
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    These suffer from rear wheel bearing speed sensor ring corrosion which can send confusing signals to the ABS ECU which them thinks you are in a skid and uses the brakes to tweak the cars line and at the same time fash the ESP light to show it is doing something. Start with a code read, if none are stored it is likely it will need tow rear wheel bearings and speed sensors.
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:
     
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  3. Re: EPC Light On and Off 
    #3
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    Hi,

    Thanks for the prompt reply. You've mentioned the ESP light, but I'm getting the EPC light.

    The car is at the garage and I was told the Accelerator Pedal Sensor showed a fault and the battery voltage was also showing low. I guess that's what caused the EPC light to come on.

    It's being worked on and I'll post an update once I get the car back.

    Cheers.
     
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  4. Re: EPC Light On and Off 
    #4
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    That's odd, I hadn't touch a drop at that time....

    The EPC light stands for Electronic Performance Control and is tied into the accelerator pedals output.
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:
     
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