BMW 6 Diesel Suspension Fault: Warning Lights Nightmare

Had a similar problem with my 2012 BMW 5 diesel (just crossed 180k km). The warning lights and stiff suspension turned out to be a faulty electronic damper control (EDC) connection. The wire harness had some corrosion and poor contact at the plug connector. Last month, took it to a specialist who diagnosed the exact same error code. It wasn't actually the dampers themselves, but the electrical connection that controls them. They cleaned the connectors, replaced the damaged wiring section, and properly sealed everything. The repair was straightforward for them, and definitely not as serious as I initially feared. The car's running smooth now, suspension feels normal again, and all warning lights are gone. If your symptoms match mine, it's likely the same issue rather than a complete damper failure. Make sure whoever works on it checks those connections first before replacing any major components. Pro tip: Get a certified BMW specialist to look at it. Better results than my previous experience with a general mechanic who misdiagnosed the problem.

Thanks for sharing your experience! That's really helpful as it sounds exactly like what I'm dealing with. The symptoms match perfectly, especially the warning lights and that stiff ride. Really glad to hear it wasn't a complete damper failure in your case. Quick question, do you remember roughly how much you paid for the repair? Also, has everything stayed working properly since the fix? Just want to make sure I'm budgeting correctly and know what to expect long-term.

Hey there! Happy to report back about the repair cost and results. After my previous post, I went ahead with that repair and it was indeed just a bad cable/plug connection like I suspected. Total bill came to 95€, pretty reasonable considering I was worried it might be something way more expensive with the dampers themselves. Everything's working perfectly since the fix. The suspension's back to being super smooth, all those annoying warning lights have disappeared, and the car feels like new again. Been about three weeks now and zero issues. The specialist was spot on with the diagnosis, and it really proved my point about going to someone who knows BMWs inside out. You're smart to check about the long-term reliability, I was worried about that too. But honestly, once they fixed that connection issue, it seems like it's sorted for good. They also mentioned they sealed everything up properly this time to prevent any future corrosion, which is what caused the problem in the first place. Much better outcome than when I had that clueless general mechanic look at it before! Let me know how yours turns out, pretty sure you're dealing with the same thing based on what you described.

Just wanted to update everyone after getting my BMW fixed! Took your advice about going to a BMW specialist, and am I glad I did. Turned out it was exactly what you described, a corroded wire harness and bad connections in the EDC system. The fix was way simpler than I'd feared. The repair cost me a bit more than yours, around 120 for parts and labor, but that's still way better than what I was imagining. They found some additional wear on the connectors that needed addressing, but nothing major. Got my car back yesterday and the difference is like night and day! The suspension's working perfectly again, all warning lights are gone, and it's riding smooth as butter. The specialist even gave it a thorough check-up while they had it up on the lift, which helped catch a couple of minor issues before they became problems. Really appreciate everyone's input, saved me from probably getting ripped off at my old mechanic's place. Lesson learned: sometimes going straight to the specialists is the cheaper option in the long run!