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Old 09-21-2011, 03:27 PM   #1
4th Gear Member
drivetolive's Avatar
Join Date: Jul 2009
Location: Vaughan
Posts: 600
Replaced Oil Sensor but Light Still On (E46)

For a few months now I've had my oil light come on after I shut the car off (usually only after I drove short distances, such as to the local bank or anywhere within ~7km). Recently (before I changed my sensor) I was getting my oil light while driving (usually always came on after a cold start, after driving for about ~8 minutes) and it would go away after about 10-15 minutes into my drive. I figured it wasn't a big deal (seemed like my was sensor crapping out) since my oil level was fine and I'd change my sensor when I was due for my next oil change.

Well I changed my oil and sensor over the weekend and all was fine for one day. Today after shutting the car off after a short drive I had my light come on.

What could the issue be? Obviously it isn't the sensor, and, my oil level is spot on and always has been (no leaks, no burning, etc.).

While changing the sensor, I took quick glance at my connectors and wires and everything seemed fine. Am I looking at a major engine issue here? What could it be?

P.S. - Engine runs fine, no smoke or anything of that sort, pulls and runs like from the day I got it. Car is an '04 325i, 93,000 KM. I changed the sensor with an OEM BMW sensor and have always used BMW 5w30 oil.
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Old 09-21-2011, 10:19 PM   #2
Autobahn East
Join Date: Jul 2005
Location: Ajax
Posts: 304
Get the LCM/LKM updated with latest version software. Revision in tolerance parameters for E46, E53 and E39.

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Old 09-25-2011, 07:58 PM   #3
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Join Date: Aug 2002
Location: Torono
Posts: 288
You replace oil lvl sensor every oil chg ?
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Old 09-25-2011, 10:00 PM   #4
Join Date: Jul 2010
Location: Markham
Posts: 286
no, he had the issue before, and posted here on Max. Everyone told him to change the sensor, which now we know everyone is WRONG!
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Old 09-27-2011, 12:10 PM   #5
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Join Date: Jan 2007
Location: Mississauga
Posts: 1,582
is it the yellow oil light or red oil light?

if red, try changing the oil pressure sensor instead.
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