The cameras are only held in place by double sided tape. When I purchased my UX the rear DC was loose at the time of pick up. Lexus refixed it but it fell off during the 50mile ride home. Moaned,of course, to Lexus who reluctantly sent out their "expert" to refix it only for it to fall off within an hour or so. Refixed it my self after thoughly cleaning the glass and DC unit and using new 3M pads. Been ok for 14 months although rear camera actually faiked to work after about 5 months and replaced under guarantee. Conclusion? Get dash cam fitted by indy expert not Lexus.