Replacing downstream O2 sensor bank one passenger side
Hello everyone, I'm trying to replace the downstream oxygen sensor on my 2014 c300. I took it to my mechanic. We removed the plastics and we realized that the O2 sensor is placed inconveniently on top of the Cadillac converter which is very unaccessible. My question is that do we need to remove the exhaust like completely and how do we disconnect the sensor wires because they're placed behind the engine and there is no access neither from bottom nor the top. I feel like even if you do attempt to remove the exhaust we still wouldn't be able to reach the cable from the bottom. I watched a few videos on YouTube and most of them are removing the left side sensor or the ones that are removing the right side. The sensor is located conveniently at the bottom of the Cadillac converter which makes a lot more sense.
Any help is appreciated
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