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warning lights

Discussion in 'A4/S4 forum(B5 Chassis)' started by skinz, May 28, 2011.

  1. skinz
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    skinz Member

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    i've got 2 lights coming up on my dash, i've got the ABS light come on and a (!) starts flashing, is it just 1 of te ABS sensors gone or is it something else
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  2. Keyser Soze
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    Keyser Soze Member

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    It's a sure sign that the ABS system has a fault, only true way of finding the root cause is for a VAGCOM scan to be done otherwise you'll end up p&ssing in the dark changing things over.

    A quick way of determining if the ABS sensors have gone awry is to disconnect at the plug and drop a multimeter across the terminals to check if there's an open circuit on the sensor
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  3. skinz
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    skinz Member

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    looks like i need to get myself 1 of these vagcom's, already got the op-com for vauxhall, was a nightmare to install on my laptop, some1 on here gave me a link to a cheap 1 on fleebay but i've seen some1 post on here that u need to watch out for the cheap 1's, c with my op-com 1 i have a lot of prob's with my antivirus an d i dont want that again
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  4. skinz
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    skinz Member

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    got 1 more thing, im not sure if my temp gauge is working, it never seems to move even when the cars just idling for 10-15 min, would the vagcom tell me if something is up here as well
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  5. Keyser Soze
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    Keyser Soze Member

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    It would help. Common thing here is a duff thermostat or CTS (coolant temp sensor)
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  6. skinz
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    skinz Member

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    where is the CTS
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  7. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    Back of the cylinder head.
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  8. mike-a
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    mike-a Member

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    Do the abs symbols clear if you switch ignition off? If you can start car and the warning only comes on once you drive off then it's maybe a sensor problem.Vagcom will show which one is faulty.
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  9. skinz
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    yea it only comes on after about 10min+ of driving, what does the (!) mean then
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  10. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    (!) means fault in the braking system.

    If the ABS light comes on at the same time then its a fault with the ABS system.

    The fact it comes on after your driving means its a faulty sensor or reluctor. You need Vagcom to find out which.
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  11. skinz
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    skinz Member

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    ok cheers, so r them vagcoms on fleebay any gd or do i need to look somewhere else
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  12. Oranoco
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    Oranoco Well-Known Member

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    Have you checked fluid level? Mine was slightly low and through extreme left handers would bring up the same symbol (!)
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  13. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    wouldnt have braught the ABS light on as well though?
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  14. Oranoco
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    Oranoco Well-Known Member

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    True enough.
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