Tl* the contact owns a 2018 acura rdx. the contact stated that water entered the headlamps of the vehicle due to a stress fracture. the contact stated that after examination it was determined that no impact had occurred to cause the fracture. the vehicle was taken to an independent mechanic and the headlamps were replaced however the failure recurred. the contact stated that the driver's side rear turn lamp indicator blinked at an excessive rate due to a similar failure. the manufacturer was notified of the failure. the approximate failure mileage was 25,000.