Do your O2 sensors - Mercedes-Benz Forum
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post #1 of 14 (permalink) Old 08-01-2019, 09:39 PM Thread Starter
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Do your O2 sensors

I just replaced all four oxygen sensors on the S 500, and i知 kicking myself for not having done it a long time ago. The recommended interval is 100,000 miles, and I知 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値l need some 22mm crow痴 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.
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post #2 of 14 (permalink) Old 08-04-2019, 10:38 AM
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Garage
How many miles does your S500 have?
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post #3 of 14 (permalink) Old 08-05-2019, 01:26 AM
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Agreed it’s time to do o2 sensors on all these cars
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post #4 of 14 (permalink) Old 08-09-2019, 05:13 PM
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At 175,000 miles, the S600 TT is getting them this weekend. But I found something out. A lot of stores are listing the incorrect OE Bosch front O2 sensor for the S600 TT. That includes Rock Auto, FCPEuro, PartsGeek, and even Advance Auto Parts. They're listing the Bosch part #15058, which is wrong; the Bosch 15058 is for the 1990's-era C-class. It doesn't even look the same.

Interestingly, PelicanParts has the correct listing.

So, I did some cross-referencing research. Here are the right numbers.


Front Oxygen Sensor
-------------------------
M/B part #: 002-540-01-17
Bosch OE part #: 16473

Source: https://www.boschautoparts.com/en/au...s?partID=16473

Note: the original Genuine-MB part has the following Bosch number on it:
0 258 006 473/474

Rear Oxygen Sensor
-------------------------
M/B part #: 001-540-95-17
Bosch OE part #: 16438

Note: the original Genuine-MB part has the following Bosch number on it:
0 258 006 438/439

How do I know this is a Bosch number? Easy. The new rear O2 sensors (Bosch) have that same number (0 258 006 438). :-)

EDIT: I think I understand why a lot of these stores list the wrong front sensor. It's because Bosch does not include the 2003 S600 on its list for the 16473 part for some reason. They do include the 2003 CL600, and the 2004-2012 S600's, which is kinda interesting, given that it's the same exact engine. So, I'm pretty sure the parts stores are simply doing what they should normally do and put in their database whatever the manufacturer (in this case, Bosch) says. Rock Auto, for example, does list the 16473 part as correct for the 2004 S600.

When the 16473 parts get here, I'll look at the numbers on it and compare them to what's on the Genuine-MB sensors and update this thread.
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Last edited by cowboyt; 08-09-2019 at 06:55 PM. Reason: Figured out what might be happening with the strange part #
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post #5 of 14 (permalink) Old 08-09-2019, 08:56 PM
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I wonder what makes one right and one wrong. I say that because I have a stoichiometric meter that uses a wideband o2 sensor that is used for any application. I always thought it was heated or non heated and connector related. You got me thinking.....
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post #6 of 14 (permalink) Old 08-09-2019, 08:58 PM
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I am guessing it is AFR related for a specific application? Just thinking....ehh typing out loud.
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post #7 of 14 (permalink) Old 08-10-2019, 12:59 AM
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Quote:
Originally Posted by Triple cranks View Post
I wonder what makes one right and one wrong. I say that because I have a stoichiometric meter that uses a wideband o2 sensor that is used for any application. I always thought it was heated or non heated and connector related. You got me thinking.....
Hi,

Exactly Correct

Also Lead Length and also on some Vehicles thread size and depth.

It's actual data capabilities are the same as it is merely measuring Oxygen Content, and 5V operating Voltage is pretty much industry standard these days.

Just remember some parts are better quality than others, and once again, much fake junk out their

HTH,


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post #8 of 14 (permalink) Old 08-10-2019, 06:57 PM
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All the Bosch ones for Mercedes-Benz seem to be of the 4-wire type and heated, so it's apparently wire length and the connector.

From what you're saying, I'm getting that in a pinch, I could use the ones intended for the S430 on the S600 as well. The S430 sensors' wires are long enough and use the same connector as those for the S600.
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post #9 of 14 (permalink) Old 08-10-2019, 09:46 PM
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Can you tell us about what was incorrect about the ones rock auto originally sent ? Size, wire harness ?

I have a 2003 CL600 that will need these someday and want to have the right ones
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post #10 of 14 (permalink) Old 08-11-2019, 04:48 PM
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Sure. The 15058 is incorrect for the following reasons.

1.) The cable is a bit long (that's no big deal, though).
2.) The sensor is actually larger, physically, than the other ones for this car.
3.) The 4-wire electrical plug is shaped differently.

You will choose the Bosch 16473. Note that Bosch does list your 2003 CL600 in the 16473 list, as well as all other CL600's. It's only in the S600 line where the 2003 year is missing and needs to be listed. Either way, 16473 is correct for your and my cars.
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