You lazy bum. Wash the damn car by hand.
Oh let me guess, you live in an appartment. Hey use the wand at the car wash and bring your own towels to dry it off.
I would think it could be a humidity problem and a not water tight connection.
Maybe take apart all the connetors, check the seals.
210,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
Engine Build - Click Here