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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 03-26-2015, 07:12 PM
Softhands Softhands is offline
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Mein Auto: BMW 530i 2003
2003 530i BMW !Stop Engine Oil Pressure!

Okay I just replaced the oil pressure sensor near the oil filter housing, and I am still getting !Stop Engine Oil Pressure! Prior to getting that message I also get the OIL CAN icon flashing off and on. I also get on occasions Check Oil Level.

Question, could a bad oil level sensor underneath the car cause the message !Stop Engine Oil Pressure?

I did checked the oil level, and its fine.

Last edited by Softhands; 03-26-2015 at 07:24 PM. Reason: Forgot to mention Check Oil Level message.
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Old 03-26-2015, 07:29 PM
Edge540 Edge540 is offline
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your next step should be checking the oil pressure with a manual gauge
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Old 03-26-2015, 07:38 PM
edjack edjack is online now
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Level sensor is not to blame. Measure oil pressure by replacing the sensor on the filter housing with an oil pressure measuring device.
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Old 03-26-2015, 08:47 PM
Softhands Softhands is offline
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Thank you for your responses. However since I do occasionally get "Check Oil Level" warning, is it possible that 1.) I could have a bad oil level sensor, because the oil level is fine when I check it. 2.) Does the BMW oil pump have a bypass valve? 3.) If it does, do they get stuck, and could I clean it with Sea Foam in hopes it gets unstuck? 4.) Are Manual gauges expensive and how much are they? Thanks
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Old 03-26-2015, 08:58 PM
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johnstern johnstern is online now
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+1 on what Edge540 and edjack said.

I has been documented that sometimes a piece of crud get stuck in the passage leading to the oil pressure switch. If this is so, you will give a false reading on an oil pressure gauge too.

The way to clear the crud is easy and messy. You need to remove the oil pressure switch, put a bunch of rags in front of the hole and run the engine for a second or two. Now clean up the mess and reinstall the oil pressure switch. If you still get the oil pressure failure light, you need to get ahold of an oil pressure gauge and check what's going on. If the light stays out, you've gotten rid of the gunk and fixed your problem.

BTW-don't waste your time with the oil level sender. You've already established that the crankcase is full-not over full I hope.
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Old 03-26-2015, 09:24 PM
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bluebee bluebee is offline
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I typed /oil pressure in the bestlinks and this came up
What to do when you have low oil pressure (1)

I typed /oil level and this came up:

- How to check the oil level on the oil dipstick (1) & how to calibrate the oil level when replacing the oil level dipstick guide tube (1) & how to replace the E39 I6 oil level sensor (1) (2) & what torque to use (1) & what to do if the oil level sensor sends a signal to blow fuse 15 causing the car to not start (1) (2) & how to test, clean, & redesign the original BMW dipstick guide tube to prevent CCV vent clogs (1)
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Please read the suggested threads, where the best always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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