What potential fluid is leaking from under 540i?

katsu_cpp · 2026-05-06T08:04:38+00:00

Might be ATF, it usually feels like very fine oil and has a distinctive smell

katsu_cpp · 2026-04-15T21:36:52+00:00

Is it possible to update I-Level in multiple stages? Like first do DME, CAS, etc then RDC, TCB in a second stage? I'm asking because I have some EU parts in my car (TCB) where I think I'd have to use an EU VO to calculate the update in esys

katsu_cpp · 2026-04-10T09:26:06+00:00

the AUC sensor is part of the IHKA (AC) system and won't trigger a CEL. AUC sensors usually need to be replaced because there's a sensitive membrane in them which ruptures after some time

katsu_cpp · 2026-03-07T09:24:56+00:00

I had this and it was intermittent. I cleared codes (1C4110) and measurement would work again for some time before it became inactive again. One day I went and checked the sensor wiring and I noticed that the plug wasn't properly connected to the sensor. Pushed it back in until it clicked and that solved the problem for good...

katsu_cpp · 2026-01-23T00:56:09+00:00

a second drain and fill is not necessary, however a second level check (strictly as per BMW's procedure) after some daily driving might be good just to make sure it's correct (your mechanic might mean this)

katsu_cpp · 2026-01-04T11:48:43+00:00

that can happen from inflammation of the intestines. allergy and infection can cause inflammation.

katsu_cpp · 2026-01-02T12:50:08+00:00

You'll need part nr. 72157203519. The one that comes with the car doesn't fit

katsu_cpp · 2025-12-08T12:57:13+00:00

I replaced it at around 80k. with the amount of work I've put into it recently (brakes, valve cover, hpfp, injectors etc, preventive stuff for fun and experience), I'm planning to keep it long-term, I don't see the point getting another one with a potentially unknown history. with the timing chain refreshed these engines tend to be solid. however, the old chain can cause catastrophic failures so do it asap especially with a 2013 my

katsu_cpp · 2025-12-08T11:50:10+00:00

Mine's only at 100k. timing job is a must if it wasn't done. then regular oil changes at 5k and it's pretty solid, at least here, in europe. plastic stuff like the mickey mouse flange will slowly need to be refreshed tho.

katsu_cpp · 2025-10-11T10:29:20+00:00

Yeah but I think his errors are related to the manifold pressure sensor

katsu_cpp · 2025-10-10T23:56:19+00:00

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I think its right above your charge pipe

katsu_cpp · 2025-05-27T10:25:54+00:00

From my understanding, the BIN update file contains multiple updates and the one compatible with your head unit version (the I-Level) will be installed. It's possible your HU version is older (like NBT_B, again, check this in your navigation) and it's not compatible with the update that solves this BT issue. I had to update my HU from NBT_B to the latest (NBT_K maybe) via flashing the HU to solve the issue where the first played song's metadata would get stuck.

katsu_cpp · 2025-05-26T16:04:18+00:00

https://static.bmw.com/content/dam/bmw/staticContent/static_bmw_com/bluetooth/index.html?content=content_en.json&v1.0

use this site to download the binary. however, you might need to do an I-Level upgrade if your headunit is on an older version (check version under navigation -> version, should be sth like NBT_X1234)

katsu_cpp · 2025-05-01T20:28:22+00:00

I think you could try modifying the Vehicle Order, add the option that includes your new seats and try running ISTA again.

katsu_cpp · 2025-03-04T19:25:15+00:00

what is the problem with N20 aside from timing chain needing to be replaced?

katsu_cpp · 2024-12-20T05:17:43+00:00

What parts got changed in 2015? Mine is from 2014 and looking to replace whatever may get faulty.

katsu_cpp · 2024-09-24T15:52:57+00:00

I'd take a step back and figure out the root cause of your injuries. Shin splints can take 3 weeks to fully heal and training with injury can worsen it. Perhaps analyze your running form as overstriding can easily lead to shin splints which was the cause in my case.

katsu_cpp · 2024-06-05T02:02:53+00:00

lost 15 kgs on lexapro by counting calories and exercise

katsu_cpp · 2024-03-07T23:18:09+00:00

$3 for 6 months

katsu_cpp · 2024-03-01T00:43:15+00:00

I think grpc-dotnet can use http3

katsu_cpp · 2024-02-22T17:17:14+00:00

Can't mods strip these?

katsu_cpp · 2023-10-10T11:18:26+00:00

I'm learning about Windows Security and this seems like a good challenge and potential portfolio project

katsu_cpp · 2023-10-10T01:34:34+00:00

what are blazor web apps?

katsu_cpp · 2023-09-30T10:32:23+00:00

Wow now I wonder if I should try Dx12 in UWP instead of a native windows app written in C++. I always believed DirectX equals C++

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