BMW 5 Series Oil Sensor Warning: Fix & Cost Guide

I had a similar issue with my 2014 BMW ActiveHybrid 3 last month. The oil pressure warning kept popping up out of nowhere, and the sensor readings were inconsistent. Turned out the oil level sensor connector was corroded and had a loose connection. Based on my experience, these sensor issues can be tricky. At the garage, they first checked the actual oil level manually, which was fine. They then tested the sensor's electrical connections and found the problem. The fix involved cleaning the connector, replacing some wiring, and recalibrating the sensor system. While this wasn't a major mechanical issue affecting the engine itself, it's definitely something you shouldn't ignore. Oil pressure warnings, even if they're just sensor errors, need to be addressed quickly to avoid any potential engine damage. By the way, they did a full diagnostic scan to rule out any other issues. The whole thing took about 3 hours to fix. Definitely have it checked soon, faulty readings mean you can't properly monitor your oil levels, which is crucial for these hybrid engines.

Thanks for sharing your experience! That's super helpful to know about the corroded connector. Really sounds similar to what I'm dealing with. Would you mind sharing how much you ended up paying for the fix? Also curious if you've had any other sensor problems since they did the repair?

Hey there! Glad I could help earlier. Yep, just got back from the mechanic last week and I can happily report the oil sensor problem is completely sorted now. They found it was indeed the cable connection that was playing up, pretty much exactly what I suspected when we first chatted. The final bill came to 95 € which covered fixing that faulty cable connection to the sensor. I'd say that's pretty reasonable considering all the diagnostic work they had to do. And the best part? Not a single warning light or error message since then! The sensor's working perfectly now, giving consistent readings just like it should. To answer your question about other sensor issues, nope, haven't had any other problems pop up. Everything's running smooth as silk. These BMWs can be a bit finicky with their sensors sometimes, but once you get them sorted, they're usually good to go. If your issue sounds anything like what I had, you're probably looking at a similar fix and cost. Hope this helps with your decision!

Thanks so much for all the details! Just got back from my mechanic visit today, and wow, what a relief! My situation turned out pretty different from yours though. The mechanic found that the oil sensor itself was completely shot, not just a connection issue. Had to get the whole sensor replaced. Ended up being more expensive than your repair, cost me about 280 € total. But honestly, after dealing with those constant warnings and dashboard lights, it's worth every penny. The car's running great now, and it's such a relief not seeing those warning lights pop up every time I start the engine. The mechanic was actually super thorough and showed me the old sensor, it was pretty corroded. Also did a complete oil change while they were at it, just to be on the safe side. Really glad I didn't wait any longer to get it fixed. Thanks again for sharing your experience, it helped me feel more confident about getting it checked out!