I just replaced all four oxygen sensors on the S 500, and i’m kicking myself for not having done it a long time ago. The recommended interval is 100,000 miles, and I’m pretty sure mine were never replaced in 200,000 miles.
I did not know the engine could be as smooth as it is right now. I had a really bad vibration at just under 3000 RPM, but the entire RPM range has been smoothed out. I had done an ECU and TCU reset, and that made a small difference, but nothing compared to the new oxygen sensors . For $220, it is a no brainer. The rear ones were $60, and for the front ones i used the Bosch universal ones at $50 each. It took me about an hour to wire them together, and a call hour and a half to install them. The front left one is the annoying one, you’ll need some 22mm crow’s foot wrench and the perfect extension to reach it from the top.
The difference is night and day, go change your oxygen sensors. You will use less gas, have more power, and cause less wear to the engine by removing engine vibrations.
Do it.
I did not know the engine could be as smooth as it is right now. I had a really bad vibration at just under 3000 RPM, but the entire RPM range has been smoothed out. I had done an ECU and TCU reset, and that made a small difference, but nothing compared to the new oxygen sensors . For $220, it is a no brainer. The rear ones were $60, and for the front ones i used the Bosch universal ones at $50 each. It took me about an hour to wire them together, and a call hour and a half to install them. The front left one is the annoying one, you’ll need some 22mm crow’s foot wrench and the perfect extension to reach it from the top.
The difference is night and day, go change your oxygen sensors. You will use less gas, have more power, and cause less wear to the engine by removing engine vibrations.
Do it.