PSM button would be in one of the wings up the side like (as well as shaped the same) as power lock button.
The big round hole (same size but on opposite side from cigar lighter) is for intermittent wipers OEM. However, some will add a second power point there or wire it for something else (like the OBC hack, radar detector, homelink, etc....). Post a link or a picture if you can for more details.
PSM button would be in one of the wings up the side like (as well as shaped the same) as power lock button.
The big round hole (same size but on opposite side from cigar lighter) is for intermittent wipers OEM. However, some will add a second power point there or wire it for something else (like the OBC hack, radar detector, homelink, etc....). Post a link or a picture if you can for more details.
I think you've hit the nail on the head, since it is the same size but on the opposite side from the cigar lighter. So it looks like this car doesn't have PSM (darn!).
I wouldn't let the lack of PSM on this car deter you...it's over rated as a driver's aid. Yes, it does allow some slip angle, but will intervene at anything greater than I believe about 5% (which most enthusiasts dislike).
__________________ JGM
2002 Boxster S
1973 911 Green FrankenMeanie
PCA DE Instructor circa '95
__________________
I still wave at Boxsters, but they no longer wave back :-(
2002 Boxster S "Violet" (sold but not forgotten)
2009 Carrera 4S "Kelsey" (current ride)
2015 FIAT 500e "Nikki" my commuter car