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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 06-19-2015, 10:09 AM
drfred drfred is offline
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oil sensor-E46 162,000

I have an oil leak so I am fairly consistent checking the dip stick. When I start the car the oil light goes red and yellow and turns itself off as it always has. I found that I was down 2 quarts and the yellow warning light did not come on at all. Is that the sensor malfunctioning?
thx
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  #2  
Old 06-19-2015, 10:54 AM
forzam forzam is offline
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The oil sensor will throw a code if it's malfunctioning. I'm not sure if it will do this in every case, though.
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Old 06-19-2015, 12:57 PM
JKRIT JKRIT is offline
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See if this helps, courtesy of shanneba: http://www.bimmerfest.com/forums/sho...l+level+yellow

If it comes on yellow when the car is turned off - you are low on oil and should check the oil level and add oil if needed when you can, like at the next fuel up.

If it comes on yellow while driving- you are at the min oil level and need to check the oil level and add oil within 30 miles.

If it comes on yellow after the car is started and the oil level is correct - your sensor is out and needs to be replaced.

If it comes on red - stop now! your oil pressure is below minimum.
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Old 06-19-2015, 01:50 PM
drfred drfred is offline
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Apparently I wasn't clear

My problem is that the yellow light does not come on at all even though I am down 2 quarts
of oil. When I start the engine, it cycles through yellow and red and does not come on after that.
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Old 06-19-2015, 03:15 PM
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MalibuMafiaV MalibuMafiaV is offline
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It's your level sensor that's sitting at the bottom of the oil pan. Mine went bad on my E46's and I never replaced them. I figured since I had an oil dip stick no need for a sensor or to waste money on it. How many miles do you go before your low 2 quarts?
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Old 06-20-2015, 06:15 AM
drfred drfred is offline
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4000 miles
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Old 06-20-2015, 07:59 AM
forzam forzam is offline
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If you are certain you are low two quarts and the light isn't on, then the sensor is malfunctioning. They go bad. Get a Hella and replace during next oil change.
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