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S3 - With a couple of issues- any suggestions?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Mi7rennie, Oct 16, 2012.

  1. Mi7rennie
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    Mi7rennie Member

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    [Oct 16, 2012]
    Hi Guys,

    Just got my S3 through its MOT and taxed yesterday. She seems to be driving pretty well but has a couple of faults I was hoping you could help diagnose.


    • ESP flashing when accelerating gently from low speed - sometimes this leaves a soft fault until the next start up.
    • ABS light going off when braking gently and also leaving a soft fault on the dash.
    • Temperature gauge will sit on 90 when stationary but drops down as I drive - suspect the thermostat, what do you think?

    The history of the car is that is has been sitting for a few months unused.

    I had to fit a rear ABS sensor I used this one: Audi A3 8L1 Hatch Bosch Rear ABS Sensor Genuine Brake Wheel Speed Sensor | eBay

    The longitudinal acceleration sensor from behind the glove box was missing so I replaced that.

    Apart from that it was just tyres, ball joints and anti roll bar bushings for the MOT.

    Can you suggest any common faults I should check?
    #1
  2. s3dave
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    s3dave TFSI Hybrid Supporter

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    [Oct 16, 2012]
    I would suggest a 4 wheel alignment mate... esp as you have moved ball joints etc..
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    [Oct 16, 2012]
    Is the steering wheel on straight when driving in a straight line? dodgy ABS wiring to the sensors sometimes cause this too

    <tuffty/>
    #3
  4. Mi7rennie
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    Mi7rennie Member

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    [Oct 16, 2012]
    I meant to mention that, the wheel is about 10 / 15 degrees off the straight ahead.

    It also looks like a lot of camber on the back wheels and I can't see any adjustment, the car is lowered on eibach springs.
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  5. <tuffty/>
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    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    [Oct 16, 2012]
    Gotta love it when peeps leave that little bit of info out lol...

    Righty... as said, get a wheel alignment done... the steering wheel needs to be straight as the steering angle sensor will be out of calibration and the ABS/ESP system will think you are turning a corner but get confused as the speed sensors are reading the same and not a differential as the ECU is expecting..

    Rear camber needs adjustable tie bars to bring back in then get a 4 wheel laser alignment

    <tuffty/>
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  6. Mi7rennie
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    Mi7rennie Member

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    [Oct 16, 2012]
    OK great, I'll get it booked in for later this week.

    I'm not sure if I can afford the read tie bars just now but at least I'll get the front sorted.

    Would that also explain the ABS getting confused?
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  7. <tuffty/>
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    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    [Oct 16, 2012]
    Potentially yes... assuming no other issues exist... get the alignment done first then take it from there...

    <tuffty/>
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  8. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Oct 16, 2012]
    Assuming you have the same Eibach springs I had previously, the rear camber is not a major issue, unless you are doing mega mileage. Mine wore out evenly at the back, but I do like to take corners quickly in mine!
    #8
  9. vrbob
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    vrbob Thats no Moon, Thats a space station!

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    [Oct 16, 2012]
    Temp issues is probably thermostat but a vcds scan might point to the coolant temp sensor
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  10. Ben S3 8P3
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    Ben S3 8P3 Member

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    [Oct 16, 2012]
    how much does a wheel alignment cost roughly? My 8P3 is probably 3-4 degrees to the left on the steering wheel
    #10

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