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Wow... the maintenance sheet is so nice and complete with the WIS number.
Thanks Chief K.
My User manual does not give this good info.
I never actually look at WIS/EPC for maintenance sheet, its been always more for how to remove/install stuff and electric diagram.
In case you do want to swap out the CPS, here are some tips. I've just swapped mine on an identical vehicle (2013 E300/M276). The sensor is very hard / impossible to see from the top of the engine. I found it was far easier to find and replace from underneath the car. Get the front jacked up and put some axle stands under the sills at the front jacking points.
Even though you can replace the CPS with all the covers in place, you can get a bit more room by removing the cover that's just in front of the transmission.
Now, on the left side of the engine, at about 10 o'clock on the bell housing (see the picture above), there is a heat shield. Undo the lower bolt on that heat shield, it's just reachable with a small Torx bit. You don't have much leverage, but once the bolt is loose, you can unscrew most of it by hand. Otherwise just keep going at it.
Once the bolt is removed, you can bend away the heat shield, and the CPS is just behind it. See below picture, where the shield is already bend open and you can see the CPS with connector still in place.
On the picture you can just see the bolt below the CPS holding the CPS in place. Before unbolting this, first make sure to unclip the connector. I used 2 screwdrivers to unclip the connectors as my hands are too large to fit in there. One screwdriver to clip open the white clip and push on it, the other screwdriver to force the connector from the plug.
With the connector removed, now unbolt the 1 bolt holding the CPS in place. Use the same Torx bit used to remove the shield.
Refitting is the reverse of removal etc.
I bench-tested the DELPHI SS12020-12B1 part as a replacement, that one works okay and is only 22USD.
Thanks for your tip. I encountered the same problem with the heat shield as i was looking for the other bolt that holds it together. I was worried about bending the metal shield, but now that you have done it before, i guess that’s what i’ll do.
07-10-2022, 10:26 AM
