Horrible slam shift one time but when it happened while at speed it just stayed in 5th until i went slow enough then stays in 4 th only. Makes for very anemic launch and very difficult to drive up onto a curb to climb under to fix.

I had it happen once when parked for a couple months and twice while driving and when getting splashed by slush or water from passing semi.

It's more of the coincidence of right after water incident and you mention washing the car that seems to be way too much of a coincidence. Def check the connector before doing anything else.

The shorted wires can make for just about any error and any symptom.

In my case at least the first time it shorted the pins to the selector switch and made for random gears.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)