I have a BMW X3 3.0d (E83) with the M Aerodynamic kit which has retractable headlamp washers - these are activated automatically with every fifth use of the windscreen washers. There are colour coded cover caps in the front bumper (BMW part no. 61.67.3.416.176) - one of these popped off and I ordered a replacement from my dealer. Now the part has arrived, I'm not sure how to fit it. It looks like I need to activate the headlamp washers, catch them when they pop up and try and clip the cover cap in place? Any advice would be gratefully received to avoid breaking my car and / or spending a fortune on the dealer doing it for me!