need some advice.
recently i found some water patch on the floor mat, at back seat, behind driver's seat.
my car never kena flood before. and i don't rem my doors leak in rain water. I didn't even wash my car for few months liao.
can't be air con water coz back seat has no air con vent. Front seat floor mats are all ok.
can't be bodily fiuld coz i don't do anything on back seats.
any possible cause of this?
today, i park under hot sun, remove the floor mat, roll down windows abit to allow drying
will monitor over few next days.