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      03-03-2014, 03:29 PM   #1
Zack77
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2006 325i Oil Sensor

I purchased a 2006 325i about four months ago and realized immediately after that the oil level had stated "Service" and the bar was in line with min. I then changed the oil and it did not change. Just a few days ago I then replaced the oil level sensor with absolutely no change. Within the manual on how to change it it stated there was a ground wire that goes on a 10mm nut-which was not present. There's 116,000 miles on the car and I'm just curious of there's a fuse or anything else they can explain the issue. The wires on the connector all appeared to be okay.

Thanks for your time

Also, the little spinning clock icon does not show up at all.

Last edited by Zack77; 03-03-2014 at 03:40 PM.
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      03-03-2014, 04:21 PM   #2
RazRokz.!
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Are you talking about the red icon that comes up when you're due for an oil change?
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      03-03-2014, 05:53 PM   #3
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did you try the reset procedure by holding the odometer button for ~5 seconds to get you into the service menu?
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      03-03-2014, 07:26 PM   #4
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Yes I also cannot reset the oil service counter, the clock comes up when I do they but it stays at 0. I called the dealership and they seemed to have no idea what it might be.
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      03-03-2014, 07:27 PM   #5
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Quote:
Originally Posted by RazRokz.! View Post
Are you talking about the red icon that comes up when you're due for an oil change?
That won't reset as well but I'm talking about the actual engine oil level that won't move
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      03-08-2014, 08:39 AM   #6
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I wrote and posted a DIY to change the oil sensor in the DIY section. I'm not sure what instructions you followed to replace the sensor. I've attached the DIY for reference (it has pics). There is a ground wire that needs to be attached to the threaded boss on the ground plate using a M6-8.8 10MM-head bolt. The ground plate is a plate of steel that wraps around the body of the sensor and is bolted in place using the three retaining nuts that hold the sensor to the oilpan. I've attached the diagram of the grounding plate here too. It is Item 4 in the pic and the bolt is Item 3 just above it in the parts list. I'm not sure Item 1 ground strap in the drawing is the same as the ground wire as part of the oil sensor assembly. The ground wire at the oil sensor is a brown colored round multi-strand electrical wire and not a flat ground strap as pictured. But these type of parts and associated drawings are not always an accurate representative of what is on the car.

Also, how many quarts of oil did you refill the engine with. It takes 7 quarts. If you refilled it with less than that, it could be giving you the reading you are experiencing.

Hope this helps.
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File Type: pdf Oilsensor removal.pdf (1.06 MB, 15 views)

Last edited by Efthreeoh; 03-08-2014 at 08:45 AM.
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      03-10-2014, 04:03 AM   #7
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I had refilled it with seven quarts, but the ground wire is not present. Where should it be coming from?
Also the car is an automatic. Is that image stating the band is not present on an automatic?

Last edited by Zack77; 03-10-2014 at 04:09 AM.
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      03-10-2014, 11:52 AM   #8
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After doing some research-my car does have that bracket actually. I've been told it runs on the same bus as the water pump-which coincidentally I also had a water pump communication error from the DME. I believe there's a fuse or two that are located in the e-box? I looked and had no idea what to look for. If anyone knows where I can find a diagram that'd be awesome.
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