Had a stuck-in-the-parking lot moment myself recently. Had the dealer talk me through the process (rag, adj. pliers, and silicone spray required) but when done, still no luck. The button would now depress, but I couldn't change positions.
Reluctantly, I turned the fun mobile over to the tow-truck driver for the 220 mile trip to the dealer. Minutes later, he called back saying that he got it to shift. He had tried to pull it out of the parking stall but had forgot to release the e-brake. When he did release the break, he thought he would try the shifter one more time and EUREKA. Problem solved, money saved, total cost out of pocket: $4 silcone spray and a hot afternoon that I would have spent on the river staying cool.
I wish the dealers would do this shifter lube trick to all new cars, preserving the new-car fun.
Still loving my cabrio at about 4300 miles.
Cheers,
Timo