so this is happening to my X for the second time.
Last was in March of 2017 when I replaced the top connecting pipe myself after using a temp fix until I could get the part:
(and no... gorilla tape really doesn't stand up to the heat/pressure/vacuum very well)
I haven't taken the cover off yet to look for more cracks, but I'll bet it's the other side "filtered" pipes this time. BUT that new TSB about the extended coverage came out last year, so maybe I can get it for free? I have no desire to let the local stealership work on it, but if they'll give me the part, I'll do it again and/or take it to another shop & get it done along w/ some other work.
https://www.eautorepair.net/app/TSBS...5+M&PS=2&MA=15
SI B01 05 17
S63 ENGINE: ENGINE VENT PIPE (CONNECTING PIECE) - LIMITED WARRANTY EXTENSION TO 10 YEARS/120,000 MILES
Dated July 1st 2017.