The earlier up to 2014 have push on plastic ends. the later ones have a torx screw in the tip,
if you dont see a screw it may be best to leave it as they can work loose and go missing,
roamer
Many thanks, did it today, no screws and just pull off. I put some acf grease behind it anyway, but proberbly a waste of time as you say. In fact, they will probably slip off and disappear down the road now