Hi Joe, NO, A new relay causing exactly the same symptoms is highly unlikely, but I shall 'endeavor to persevere'.
I may have jumped the gun here without being quite
precise enough. You say 'parking lights. Could you take a moment to detail the physical location of the lamps that fail, i.e., L/F, R/F, L/R, etc..and does the 'Check Control' 'say' only 'parking lamp' or does it also show 'Taillamp Failure'....
thanks Joe, sorry if I've wasted any of your time.