checked my driver side and all was nice 'n dry. my passenger side had a mini pond down there! the ECU was in real danger of being submerged! could not get at the blocked grommet, so i got my hi tech piece of kit (ie turkey baster), and after 40mins all was dry. Phew! will need to tackle it from wheel arch, which is a pain in the derrier, but absolutely necessary before Summer ends. (i did manage to remove the driver side grommet. will upload pics for you. i may put it back later as that one was working effectively.) cannot understand how BMW engineers cannot design a more effective drain, especially given proximity to vital car electronics?