BMW 8 Diesel Limp Mode: Oil Sensor Warning Signs

I had a similar issue with my 2018 BMW 7 Series diesel last month. The limp mode and warning lights appeared exactly like yours. After taking it to the garage, it turned out the oil temperature sensor connector was corroded and had a loose connection. They cleaned the connector, reseated it properly, and checked all the related wiring. Not a major repair, but definitely something you shouldn't ignore, faulty readings can potentially affect engine performance and protection systems. In my case, they also found that some of the wiring insulation was starting to wear, which could have led to bigger problems if left unchecked. The whole thing took about 2 hours to diagnose and fix. These sensors are pretty reliable usually, but when they start acting up, it's best to get them checked quickly to avoid any engine damage. If you're getting the same symptoms as I did, it's likely the same issue.

Thanks for sharing your experience! That's really helpful, as it sounds exactly like what I'm dealing with. Good to know it wasn't anything too serious in your case. Do you remember roughly how much you paid to get it sorted? Also, has everything been running smoothly since the repair, or have you noticed any other quirks?

Hey there! Just wanted to update you on how things have been since my repair. After getting it fixed, everything's been running perfectly, no more warning lights or limp mode issues. The total bill came to 95 € for fixing the faulty sensor connection, which was just a dodgy cable connection in the end. Money well spent if you ask me! It was exactly what I thought, the engine oil temperature sensor was playing up, and since they sorted that out, my BMW's been running like a dream. Not a single problem in the past month. The mechanic showed me the corroded connector they found, and honestly, I'm glad I got it sorted before it could cause any bigger problems. Sounds like you're dealing with the same thing I had. For what it's worth, I'd say get it checked out sooner rather than later. These things can be a real pain when they're acting up, but the fix is usually straightforward when you catch it early. Let me know how you get on with yours!

I took your advice and got my BMW checked out. you were spot on! I found a reputable mechanic who specialized in European cars. They diagnosed it right away, same issue with the oil temp sensor connector. The repair was quick and painless, just like you said. Cost me about 120 € in total, which included a thorough system check. They found a bit more corrosion than yours had, but nothing too serious. The mechanic was great, showed me the old parts and explained everything clearly. Best part? The car's running perfectly now. No more warning lights, no more limp mode, just smooth sailing. It's such a relief to have it sorted. I was worried it might be something major, but it turned out to be a relatively simple fix. Thanks again for sharing your experience, it really helped me make the decision to get it checked out quickly. Sometimes these small issues can be nerve-wracking, especially with a newer car, but I'm glad I didn't wait around. Next time I have an issue, I won't hesitate to get it looked at right away!