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Bad week for the S3

Discussion in 'A3/S3 Forum (8L Chassis)' started by chris_marshall, May 29, 2010.

  1. chris_marshall
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    chris_marshall MTM S3, Aprilia RSV Mille

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    [May 29, 2010]
    Evening all. First problem was at the start of the week, my engine light has come up, no idea as to what is causing this as I don't have VAGCOM and the car feels absolutely fine, not sure if its something silly, is there anyway of resetting the light with out VAGCOM to see if its something silly that won't bring up the light again?

    Problem 2 driving to work this morning, left my house with half a tank arrived to work with a full tank and got back home showing 3/4 of a tank, what is going on there?

    Many thanks
    Chris
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  3. finesse
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    finesse Active Member VCDS Map User

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    [May 29, 2010]
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  4. OllieH
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    OllieH Member

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    [May 29, 2010]
    Disconnect the battery for 10 mins will reset the ecu, however you will need to re enter the stereo code afterwards, and reconfigure the auto window up/down function. (Both easily done, just so you're aware.)

    No idea on the tank contents problem.

    I have vagcom in Gosport if that's any good to you, not far from Ringwood.
    Last edited: May 29, 2010
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  5. leshkin
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    leshkin Speeding in reverse gear VCDS Map User

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    [May 29, 2010]
    I'd be getting a scan done if I were you - engine light could indicate a serious issue and you should not be driving the car without knowing what is wrong. Just resetting the light will not fix whatever caused it in the first place.
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  6. leshkin
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    leshkin Speeding in reverse gear VCDS Map User

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    [May 29, 2010]
    on second thought - engine light, increased fuel consumption.... lambda sensor grew wings and went to lambda heaven? just a guess.
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  7. chris_marshall
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    chris_marshall MTM S3, Aprilia RSV Mille

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    [May 30, 2010]
    Fuel consumption is fine, its just the gauge is going up for some reason, could be the fuel sender unit, would that trigger the engine light to come on? Only thing is the light came on a few days before this problem.
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  8. leshkin
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    leshkin Speeding in reverse gear VCDS Map User

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    [May 30, 2010]
    Like I said - the only sure way to diagnose this is with VCDS (vagcom). sorry
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  9. chris_marshall
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    chris_marshall MTM S3, Aprilia RSV Mille

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    [May 30, 2010]
    Will these cheapy £10 VAGCOM's off ebay diagnose and clear any faults?
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  10. finesse
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    finesse Active Member VCDS Map User

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    [May 30, 2010]
    works for some and does not for others
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  11. OllieH
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    OllieH Member

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    [May 30, 2010]
    I think you can read and clear faults, but can't datalog anything. It tells you on the rosstech site somewhere I think.

    Edit: http://www.ross-tech.com/vag-com/vag-functions.html
    #10
  12. chris_marshall
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    chris_marshall MTM S3, Aprilia RSV Mille

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    [May 30, 2010]
    Yeah, I really couldnt give two hoots about logging stuff, just want something that will tell me the fault,so I can get the part, then clear the engine light
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  13. leshkin
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    leshkin Speeding in reverse gear VCDS Map User

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    [May 30, 2010]
    The e-bay cable should be fine, but you will most likely have to buy the $99 worth of VCDS, as the error code reading function on a shareware version will show you only some of the codes IIRC.

    An alternative is to get one of the local members with the cable to help you, which might be completely free.
    #12

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