[Jura316d]

Hello BMW enthusiast!

Car: BMW E90 316d (330k km)
Engine: N47D20
Year: 2011
Serial: xxxxxxxxxxxxE719459


In the morning, when I cold start my car (the first time that day), a red warning light appears on the dashboard: "Engine oil pressure too low"
.
It automatically disappears after 10 seconds of idling and NEVER turns back on for the rest of the day (even when left for 8 hours to cool down).

Recently, I've done an oil and filter change. The oil was a perfectly black color (normal for diesel engines). The coolant level and color are normal (no leaks or mixing).

While looking at engine images online (on sites like bmwfans.info), I couldn't find the exact engine datasheet that I have. I found images of old N47 (2008) engines that have the oil filter closer to the front of the engine.

So, the question...
Where is the location of the oil pressure sensor/switch?
I want to try replacing that first because it is the easiest.
Does anyone have a PDF of repair manuals that I can take a look at?

[Tambohamilton]

Have you checked for fault codes, before you go replacing parts randomly? Also it's probably worth pulling the oil filter out and inspecting to make sure it hasn't collapsed or something.

[Jura316d]

Originally Posted by Tambohamilton

Have you checked for fault codes, before you go replacing parts randomly? Also it's probably worth pulling the oil filter out and inspecting to make sure it hasn't collapsed or something.

Last time my mechanic checked for fault codes, there were none that could be related to oil pressure. The oil pressure error started appearing before the oil and filter change.