[STEALERHSIPS GONE SOON]

User leaving forum on his own volition

[eelnoraa]

Really, oil pump is very simple and completely mechanical driven by timing chain. It is a very rare event it could fail. Replacing it is also a major surgery for B58 because timing chain is now in the flywheelside of the engine/firewall side is the engine compartment. The engine needs to come out for this job. If all cover under warranty, so be it. If you have to pay, I will question the diagnose.

Btw, measuring oil level has nothing to do with measuring oil pressure tho. If oil pump isn’t pumping properly, it shouldn’t affect oil level measurement.

[STEALERHSIPS GONE SOON]

User leaving forum on his own volition

[Marty in NY]

Originally Posted by remeeno

Tell that to BMW

I didn't fell for it when they called it the first time.
But who are we to question the same diagnostic put by three different BMW dealerships, huh?

All three dealerships opened TSARA cases meaning BMW was the one dictating the course of action. All three with the same conclusion - oil pump replacement.

When I told the second dealership I visited that I will take the vehicle back home against their "recommendation", they started to intimidate me with "possible engine damage".

Ran out of dealerships in home metro area and therefore had to move on with the replacement. BTW, when the "major surgery" was completed - the oil measuring started working properly again.

At the end of the day, if your car is in warranty, you should do as you did. We can second guess them all day long, and we do but you paid for warranty as part of your purchase price and if replacing the oil pump did not resolve the issue, they would have continued troubleshooting till the issue was resolved. You did what you should have done.

It appears from reading your service invoice that they did not ever replace the oil level sensor, is that correct?

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User leaving forum on his own volition

[2013F10]

EDIT: The shop replacing my oil pump conformed the impeller and its veins are metal, it's the housing surrounding it that is plastic and can disintegrate, causing loss of oil pressure. From linked reddit post:



I know this post is a few months old but I felt compelled to update it based on the weeks of research I just put in to solve my oil level measurement failure issue. The BMW dealership is absolutely right, here's an explanation:

2019 X5's with the B58 engine have oil pumps with plastic veins in them. These proved to be ticking time bombs as shown in the posts below. In 2020 models BMW quietly switched all B58 engines to an all-metal oil pump that was used in M car engines. If your 2019 has NOT had the new oil pump installed, it is advised to do this ASAP to avoid catastrophic engine failure. One way of testing for the plastic oil pump is to get the engine HOT, as in drive it for 25-30 minutes, and do an oil level measurement test in iDrive. If the test fails anytime before reaching 100%, your oil pressure is fluctuating enough for the test to cancel. This fluctuation is from the plastic oil pump. NOTE: The test will be successful if the engine is only warm enough to run the test, giving you a false positive, so do it after running all of your errands, commuting, etc. The new, all-metal oil pump P/N is: 11418646454.

See these posts:
https://www.reddit.com/r/BMW/comment...es_check_your/
https://g05.bimmerpost.com/forums/sh...0#post30251070

[Tejas1836]

Originally Posted by 2013F10

I know this post is a few months old but I felt compelled to update it based on the weeks of research I just put in to solve my oil level measurement failure issue. The BMW dealership is absolutely right, here's an explanation:

2019 X5's with the B58 engine have oil pumps with plastic veins and a plastic cover on them. These proved to be ticking time bombs as shown in the posts below. In 2020 models BMW quietly switched all B58 engines to an all-metal oil pump that was used in M car engines. If your 2019 has NOT had the new oil pump installed, it is advised to do this ASAP to avoid catastrophic engine failure. One way of testing for the plastic oil pump is to get the engine HOT, as in drive it for 25-30 minutes, and do an oil level measurement test in iDrive. If the test fails anytime before reaching 100%, your oil pressure is fluctuating enough for the test to cancel. This fluctuation is from the plastic oil pump. NOTE: The test will be successful if the engine is only warm enough to run the test, giving you a false positive, so do it after running all of your errands, commuting, etc. The new, all-metal oil pump P/N is: 11418646454.

See these posts:
https://www.reddit.com/r/BMW/comment...es_check_your/
https://g05.bimmerpost.com/forums/sh...0#post30251070

Holy cow!

[Giggler]

Originally Posted by Tejas1836

Holy cow!

Same faulty oil pump is in the 2020 M340i's... i had mine replaced just in the nick of time before warranty expired.

[eelnoraa]

damn, plastic oil pump propeller. I couldn't imagine BMW really outdone itself

[mitch57]

Is there anyway to identify whether or not our vehicles have the faulty plastic pump?

[gfeiner97]

Originally Posted by mitch57

Is there anyway to identify whether or not our vehicles have the faulty plastic pump?

Yup. Scroll up and read post #28

[mitch57]

Originally Posted by gfeiner97

Yup. Scroll up and read post #28

I saw that but I would like to be able to somehow identify the actual part number on the pump that's installed. I'm guessing the only way to do that is to physically remove the oil pump and verify the part number or to find the build specification for our VINs that identify specific parts, by part number, for that VIN #.

[STEALERHSIPS GONE SOON]

User leaving forum on his own volition

[eelnoraa]

Originally Posted by remeeno

I take it, that event is not that rare anymore, right?

I would never imagine this. Oil pump in B58 is hard to replace, using plastic mean it needs to be replaced from time to time. Oil pump working environment is harsh, heat, pressure, crank rpm …. Like it is said, bmw outdone themselves this time.

[jad03060]

In any modern vehicle, there's huge amounts of plastics...selected properly, they can outlast the vehicle. The issue may have been the supplier not following the design specs properly. Figuring that out, sometimes takes a little while. Plastic impellers are used in lots of applications without issues. They're lighter, and more easily formed into complex shapes that can end up more efficient in the process.

[Tejas1836]

Plastics should never be used in mission critical parts

[AGONXF30]

Originally Posted by Tejas1836

Plastics should never be used in mission critical parts

Crazy thing is that the N54 and N55 have the same design with the plastic inside and they are just fine. Though I read that some N55 did have a similar issue as the B58. My N55 is going strong at 170K and I hope I never have this issue. My B58 is getting a new pump at the dealer with less than 40K miles due to it not completing the oil measurement when the temperature reaches 225 degrees Fahrenheit and the oil pressure fluctuates up to 47 PSIG (top of the range for that is 45 PSIG). I am not sure if BMW actually did change the internals with metal.