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Thread: Oil Pressure Warning Light

  1. #1
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    Oil Pressure Warning Light

    A week ago (or around that time) I discovered that oil was leaking underneath my Roadster every time I drive it. I checked the engine bay and noticed oil residue around the top of the dipstick and a great deal of oil residue underneath the engine.

    I also noticed that the temperature guage reading was lower than normal.

    The car has been driving fine however I have started to notice the oil pressure warning light blink on and off occasionally. On the LCD computer screen a warning also appears telling me to switch the engine off.

    I have put extra oil into the engine and checked the dipstick and all appears fine after the top up. However since topping up the oil pressure warning light and computer screen notification has started to appear again. I am aware that the warning is about low oil pressure not low oil level. I added the extra oil in light of the oil leak.

    I am concerned about this, I hope someone can shed any light on why the warning may be appearing. I know I now need to get the car looked at asap.
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    2003 450 Smart ForTwo Passion - SOLD
    2003 Smart Roadster 80 109ps SW-Exclusive Remap

  2. #2
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    Does it happen during hard cornering or heavy braking?

  3. #3
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    Quote Originally Posted by pinger View Post
    Does it happen during hard cornering or heavy braking?
    Not that I've noticed. Seems to come on when the car is at a standstill mostly or slowing down?
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    2003 450 Smart ForTwo Passion - SOLD
    2003 Smart Roadster 80 109ps SW-Exclusive Remap

  4. #4
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    Measure your oil pressure.
    Drives a Smart Cdi - 65 to 85 MPG

  5. #5
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    Quote Originally Posted by tolsen View Post
    Measure your oil pressure.
    How do you do that?
    -----------------------------
    2003 450 Smart ForTwo Passion - SOLD
    2003 Smart Roadster 80 109ps SW-Exclusive Remap

  6. #6
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    This is one of the rare instances where I'd suspect the light.
    If it is well topped up then unlikely to be caused by surge. If it was failing oil pressure chances are the light would be flickering when the engine is idling. Have a look for the pressure sensor and check if the wire to it isn't bare and shorting.

  7. #7
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    Quote Originally Posted by pinger View Post
    . If it was failing oil pressure chances are the light would be flickering when the engine is idling.
    He's saying it's doing it at standstill!! , ie. Idling

    So it's 50/50 right now, faulty sensor or actual low oil pressure

    one time I'd suspect the light
    The light's fine, it wouldn't errm light if that was faulty lol
    Last edited by reinaldo_is_spam; 17-06-2016 at 07:19 PM.
    You're so money supermarket and you don't even know it!

  8. #8
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    Quote Originally Posted by pinger View Post
    This is one of the rare instances where I'd suspect the light.
    If it is well topped up then unlikely to be caused by surge. If it was failing oil pressure chances are the light would be flickering when the engine is idling. Have a look for the pressure sensor and check if the wire to it isn't bare and shorting.
    I dunno where the pressure sensor is!

    I do have issues with water leaking into the car (as it's a soft top), I wonder if there is wiring issue then?

    The warning light does flicker when the engine is idling, e.g. at a standstill in traffic?

    The light doesn't come on when I start the car, it seems to come on later on after driving. Sometimes it does feel a bit sluggish to pull away at a junction.
    -----------------------------
    2003 450 Smart ForTwo Passion - SOLD
    2003 Smart Roadster 80 109ps SW-Exclusive Remap

  9. #9
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    Quote Originally Posted by reinaldo_is_spam View Post
    He's saying it's doing it at standstill!! , ie. Idling

    So it's 50/50 right now, faulty sensor or actual low oil pressure
    Well, there is the oil leak but the oil is topped up. The warning light has only started to come on (flickering) since the oil leak started.

    What are the implications of low oil pressure and what could cause this?
    -----------------------------
    2003 450 Smart ForTwo Passion - SOLD
    2003 Smart Roadster 80 109ps SW-Exclusive Remap

  10. #10
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    Quote Originally Posted by monolith View Post
    How do you do that?
    You connect a pressure gauge.
    Drives a Smart Cdi - 65 to 85 MPG

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