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Oil Sensor Warning Light

Discussion in 'A3/S3 Forum (8L Chassis)' started by Gavin G, Feb 24, 2011.

  1. Gavin G
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    Gavin G Member

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    Why would this be coming on? Ive checked oil levels and the seem fine? Any ideas? Im going to do an oil change this weekend so would this maybe put the light off? Thanks for your help:yes:
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  2. Westy
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    Westy Double Dark Side! Diesel & 8P

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    Could be a dodgy sensor or might be an issue with your oil pressure! Try doing an oil change and see if that makes any difference. If you have a pressure issue you really dont want to be driving the car too much.
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  3. m.dub
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    m.dub New Member

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    Mines the same that annoying beep and the oil sensor warring light, im sure this just relates to a faulty sensor. iv just had a service and its still beeping away but at over £70 for a new one ill live with if for a while.
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  4. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator

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    If the light is red, stop driving and get the pick up in the sump changed before it costs you an engine
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  5. finesse
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    finesse Active Member

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    as above, small money incomparable with a new engine
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  6. DenCar
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    DenCar Member

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    Yep, change the sensor, if light is still coming on then have it looked at as it may be a blocked oil pick-up or faulty pump.

    DC
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  7. Westy
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    Westy Double Dark Side! Diesel & 8P

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    Get the car scanned, it will be rare for the sensor to be duff but a VCDS scan will tell you. It will be easier and cheaper to get the oil pickup checked and cleaned/replaced rather than spend £80 on a sensor that might not be the problem.
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  8. DenCar
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    DenCar Member

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    Out of interest, how much approx for a new pick-up and oil pump + labour.

    DC.
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  9. Westy
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    Westy Double Dark Side! Diesel & 8P

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    You shouldn't need a new pump or pickup pipe, just a clean and a new strainer which costs a few quid. A new pump and pickup pipe wont be particularly cheap.

    My mechanic charged me £80 to remove the sump, pressure test the oil pump, clean the oil pickup pipe, and replace the strainer (filter). But he was already doing a service so the sump was drained of oil anyway.
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  10. TOM.S
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    TOM.S Active Member

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    i had the same problem 3 weeks ago. its the oil pressure/ faulty sensor.
    deffo worths changing it, before you do some serious damage to the engine.
    Last edited: Feb 24, 2011
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  11. physk
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    physk Member

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    I've got the same problem
    red light with 3 beeps

    Oil levels are fine, i think i put a little too much in since i didnt really have the car on level ground and it messed up
    this was after i busted my sump and fitted a new one in

    Vagcom didnt throw up any errors regarding it

    i was told by a friend, its probably a faulty oil pressure switch. Been driving the car for the last 2 months been absolutely fine in every way
    Its due a service nowish,
    so will be changing oil again and new oil filter etc

    hopefully itl go away. anyone know what else it could be

    Dont europarts have the oil pressure switch for under a tenner
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  12. Gavin G
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    Gavin G Member

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    My light isn't red though its orange and has an oil can with sensor written beside it. Your problem may be bigger than mine by the sounds of it if it's red? :sadlike:
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  13. danger S3
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    danger S3 Member

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    #13
  14. s3dave
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    s3dave TFSI Hybrid

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    How can you drive around with that thing flashing.....it would be mind wars with me......it bugs me when the washer fluid is low.....
    just think of a worse case scenario ...if it is on because of a dodgy switch, what can it do extra if things become worse and the pressure actually drops....it would not do any extra warnings....... that is your final warning!!!
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  15. Westy
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    Westy Double Dark Side! Diesel & 8P

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    I agree with Dave, that is one warning i wouldn't be driving around with!
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  16. physk
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    physk Member

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    It's been 4months and about 3k miles lol
    Will have it checked out by a mech

    Mind you
    It doesn't do his at high speed or motorway
    But as soon as I drop from high to low speed
    The light beeps
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  17. DenCar
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    DenCar Member

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    I would think that at high speed your pump is working harder and pumping the oil at a higher pressure, at lower speed the pump is working less hence less pressure, i may be wrong about this, but i would be a little concerned if i were you.

    DC
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  18. Sandip
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    Sandip Well-Known Member

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    It's either your pick up or your oil pump. Either way if you have the sump off to do the pick up, you may aswell do the pump at the same time

    What service are you on, longlife (5w30) or regular (5w40,10w40)?
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  19. jojo
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    jojo S3 Drift King! Staff Member Moderator

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    Becareful with over filling these 1.8T's, a friend of mine mistakenly thought the low oil pressure warning as being low engine oil and overfilled his 1.8T on his Passat, it was halfway up the dipstick! He's an old chap mind, and he never thought of checking his dipstick first before filling! Anyways, the results of this is the oil came up the breather and filled the intercooler with oil, and it also pushed a load of **** into his sump, which blocked the oil pickup, so no oil pressure and a seized engine!!
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  20. physk
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    physk Member

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    I'm going to change my oil when I service my car in the next few days
    Putting 5w40 in

    Whilst I had these probs I just put in castrol 10w40
    Just to double-check there wasn't any leaks elsewhere
    I've verified that

    So now its just do te service and hope the noise goes away
    Really annoying an worrying sometimes
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  21. DavidW
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    DavidW Member

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    Is the 10w40 not semi synth though?
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  22. physk
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    physk Member

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    It is indeed

    It was always meantto be temporary
    It was put after the sump job to ensure that everythig was fine

    Just haven't had time since then to change it since I'm moving between Manchester and Sunderland
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  23. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    If its yellow and says "SENSOR" at the bottom its a fault with the oil LEVEL sensor, which sits in the sump and registers how much oil is in the sump.

    If its this, then its possibly just a wiring fault, or a sensor fault, and isnt a big issue so long as there is actually oil in there.

    If its RED and says nothing at the bottom, its PRESSURE related, and continuing to drive the car will most likely result in a wrecked engine.
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  24. Gavin G
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    Gavin G Member

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    Im in the yellow situation thank you :)
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  25. Gavin G
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    Gavin G Member

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    Did my oil change today found the problem, the oil sensor had become unplugged, problem solved thanks folks :D
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  26. Westy
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    Westy Double Dark Side! Diesel & 8P

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    Nice one. At least it's not a blocked pickup.
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  27. physk
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    physk Member

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    hopefully my problem sorts out just as easily :)
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