Mercedes S Klasse knock sensor issue

Whoa, sounds like a headache! I had a similar issue with my S Klasse – the check engine light was driving me nuts! I'm no expert, but those knock sensors are super important. They listen for engine knocking, which is basically when the fuel-air mixture explodes at the wrong time. That can seriously damage the engine! Did the diagnostics reveal which knock sensor is acting up? Because there are usually two.

The diagnostics indicated the specific knock sensor, yes. However, my main concern revolves around the potential for the cable or plug connection being the root cause, as opposed to the sensor itself failing. I'm trying to avoid replacing the sensor needlessly. Did your issue involve a faulty connection, or was the sensor itself defective?

Okay, gotcha. I wish I could tell you it was just the connection, but in my case, it ended up being the sensor itself that was faulty. I'd still check the wiring and connections thoroughly, but be prepared for the possibility of needing a new sensor. Honestly, unless you're really confident in your DIY skills, I'd consider having a workshop take a look. They can properly diagnose the problem and ensure the new sensor is correctly installed. Good luck with this!

I appreciate the information, especially knowing that your experience pointed to sensor failure rather than a simple connection issue. I will proceed with a careful inspection of the connections, but I am now mentally prepared for a sensor replacement. I value your cautious advice and will follow your suggestion by consulting a workshop for a professional assessment and replacement if necessary. Thank you again.