I don't think the white sleeve on the left should be there. I'll take a picture of mine and post if for comparison.

You should also look at the end of the cable where the circular end goes into the little plastic box, that box can break making the cable not attach to anything stalling the engine or just leaving it running at idle. It happened to me on the I5 in the middle of Cali going about 90mph on the freeway. Luckily I fit a piece of cardboard in and it did the trick. The dealer said they break all the time and the piece is only $5 so it's good pm.

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1992 Mercedes-Benz 400E
2002 Mercedes-Benz ML500