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-   -   Red Oil Light Flash on Shutdown (http://forum.e46fanatics.com/showthread.php?t=955803)

Weste46 11-13-2012 03:40 PM

Red Oil Light Flash on Shutdown
 
I've had this happen every once in a while, its a simple, quick flash, right on shutdown. I looked it up, and found one thread on it. The thread happened to be made by the previous owner of my vehicle.. :rolleyes:

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FenderGuy05 11-13-2012 03:57 PM

Is it red or orange? I've had an orange flash, meaning oil is at or below minimum level. Red would indicate that there's a loss in oil pressure I believe, but on shutdown I'm not sure if it has another meaning.

scarede46er 11-13-2012 04:07 PM

Your oil pressure sensor is going bad. Repair ASAP.

trizzuth 11-13-2012 04:35 PM

Nah, this never happened to me and is not a sign of the sensor going bad I believe.

Direct indication of the sensor going bad is that it comes on in orange immediately after start up, even though the oil level is good, stays on for about 20 seconds and then goes off. This will happen each and every time you turn the car off and start it again, and that is the indication that the sensor is bad. Never heard or read anything about it being red and indicating the same thing..

scarede46er 11-13-2012 04:36 PM

Trizuth: That is the oil level sensor. There is a separate oil pressure sensor.

Zell 11-13-2012 05:09 PM

Oil level and oil pressure share the same light. Red is for pressure, amber is for level. Oil pressure takes priority over oil level if both are giving signals at the exact same time. This sounds like an oil pressure sensor problem.

Lusticles 11-13-2012 06:26 PM

When my sensor went bad it started doing that. Then as time went on it would rapidly ignite on and off for a few seconds every now and then.

scarede46er 11-13-2012 07:45 PM

Yes, Zell. Thank you, but I am aware of that. However, the light is fed via two different sensors. One is the thermal oil level sensor. While the other is the oil pressure sensor. The part number for the pressure switch is 12611710509 or 126175688480. The part number for the level sensor is 12617508003. OP needs the former.

trizzuth 11-13-2012 08:05 PM

Quote:

Originally Posted by scarede46er (Post 14896675)
Trizuth: That is the oil level sensor. There is a separate oil pressure sensor.

Ahh, that is what I get for reading to fast.. Thanks for that, where does this oil pressure sensor live?

Weste46 11-13-2012 08:06 PM

Okay great, so its not a mystery like all my other problems are. XD is this a threat to my engine, or can I get around to it this winter?

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Weste46 11-13-2012 08:13 PM

Also, it seems like he went after it and failed to fix the issue.. I also have the same traction control light turn on with shutdown occasionally, just like the PO said in his thread. Here is is: http://forums.bimmerforums.com/forum....php?t=1648854

I also have a limp mode issue right now that has gotten progressively worse since receiving the vehicle. Possible relations?

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scarede46er 11-13-2012 08:16 PM

The presence or absence of the sensor itself is not critical to your engine. Assuming you aren't leaking or burning oil, you will not even notice the sensor. However, IF the pressure DOES drop, you will get no warning whatsoever. Bye bye engine. So yes, in theory, you do not NEED to fix the sensor. But you need to fix it asap. It is a 30 min diy, or that's how it seems. And it's dirt cheap, especially as compared to other BMW parts. Use furiousmethod.com to get the best price for the OEM part only. I think it is located somewhere near your VANOS. I am not sure.

Weste46 11-13-2012 08:17 PM

Also, I found the leak he never did. It doesn't hit the ground, and leaks about 1 quart every 2k miles, from the area around the exhaust side cam position sensor, but I replaced the cam sensor o-ring and it did not stop the leak. The VCG was done by him as well.. so not that. Is there a relationship there??

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scarede46er 11-13-2012 08:23 PM

The oil pressure switch should not cause a limp mode if it goes bad. Have you had the codes read? I suggest you invest in a BMW Scanner 1.4 from ebay. 30 bucks well spent.

scarede46er 11-13-2012 08:24 PM

I think there is a huge thread on the forum about oil leaks. I suggest you read that. It is one of the most comprehensive guides ever. Has the oil filter housing gasket ever been changed?

Weste46 11-13-2012 08:27 PM

My limp mode issue is being addressed, that's here: http://forum.e46fanatics.com/showthread.php?t=951425
Any help would be wonderful on that!

The oil filter housing gasket is fine for now, but I don't believe it's been done. I checked it though, it's fine for right now.

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