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Oil Level Sensor
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10-18-2008, 10:35 AM | #1 |
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Oil Level Sensor
Does anyone know how the oil level sensor works?
Does anyone know what determines when we can get a reading? I can't get a reading until I've driven about 5 miles. Is it oil temp, water temp or miles driven? TIA. |
10-18-2008, 11:08 AM | #3 |
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10-19-2008, 08:58 AM | #4 |
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I think it's like a depth finder or sonar for fishing. It continuously takes level readings and then gives an average. If your a quart low, then the average will be lower. It may take a few miles of driving for it to give an average.
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10-19-2008, 09:34 AM | #5 |
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You are correct. You cannot get a reading untill you have driven the car a few minutes. Not sure what parameters have to be met before you will get a reading.
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10-19-2008, 09:40 AM | #6 | |
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I wonder if there is a semi-protected chamber where the level is fairly stable???
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10-19-2008, 10:08 AM | #7 | |
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Quote:
Here is what it looks like its #4 in the diagram http://www.realoem.com/bmw/showparts...39&hg=12&fg=05
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10-19-2008, 10:12 AM | #8 |
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So there is a baffled chamber where the sensor is located???
Sure would like to see a pic or a link to an illustration of this area....
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10-19-2008, 10:16 AM | #9 | |
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Here is a diagram of the oil pan. http://www.realoem.com/bmw/showparts...33&hg=11&fg=10
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10-19-2008, 10:21 AM | #10 |
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Thanks for the parts breakdown Richwm...It appears the sensor may be inside that tube (part #8) which acts as a anti-slosh chamber..
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10-19-2008, 11:10 AM | #11 |
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usually it will take a measurement once it was warmed up. Because even with my 335 and Ive driven a bit (5-10) miles, it still will not take a reading.
If I let it idle in the driveway 10 minutes, it will take a reading. |
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10-19-2008, 11:20 PM | #12 |
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Thanks for all the feedback.
So it seems like the last diagram shows a tube that measures oil level and there's probably an oil temperature sensor that makes sure a reading isn't taken until the oil reaches a certain temperature, right? |
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10-19-2008, 11:26 PM | #13 |
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now we know... thanks
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10-20-2008, 08:45 AM | #14 |
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I can get a reading within one mile from cold...2008 E92 328i
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10-21-2008, 07:03 AM | #16 |
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10-24-2008, 11:53 AM | #17 | |
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Just curious, what made you replace the the oil level sensor in the first place? |
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10-28-2008, 12:46 PM | #18 |
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Mine never worked, it always said full and never moved even with only 6 quarts of Oil in the motor. After fighting with the dealership for three years to trying to get them to replace it I just did it myself. BTW the dealership wanted to charge me $500 to replace it after my warranty was up, so I just got it from Crown Auto for $150 and did it myself.
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10-28-2008, 01:07 PM | #19 |
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11-03-2008, 02:54 PM | #20 |
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mine gives a reading after about 3 miles from cold. level is quite accurate since i've been monitoring my oil level everyday since I did my own oil change and it always say max OK. I used 7 quarts BMW oil. I'm now at 37K miles.2006 325i sport package
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11-08-2008, 07:33 AM | #21 | |
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Thanks for the info. Mine's been tracking okay, I check the quantity of the oil at every oil change. Doesn't look like a difficult job. Thanks. |
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