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Thought I'd try this forum for responses, 2016 E 400 (out of basic warranty due to mileage) occasionally won't shift into park unless we open the car door. Lately it sometimes won't shift from drive to reverse unless we stop the engine and restart.

Pulled two codes:

P172A00 "Direct Select Lever has a malfunction"

U113B29 "Communication with the Direct Select Lever has a malfunction, there is an invalid signal"

Anyone experience similar issues? Car runs fine otherwise. Direct Select module is over $900 and this may be a wiring harness related issue that I'd like to investigate prior to taking it in to a dealer for repair.

Anyone have a wiring diagram or link that I can use please?

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