Solo Man
Well-known member
Guys, read an article in one of the UK BMW mags about the drain pipe under the brake booster clogging up and water overflowing into the car when washing or when raining. Take out the pollen filters, take out the loose small cover under the bonnet hinge and then loosen the 12mm plastic nuts and slide over the lock in the centre of the plastic cover and take that out as well. Look carefully and you will see a rubber bung that is supposed to let the water out but mine was completely clogged. Some of the water from washing the car a week ago was still sloshing around in there. You can completely remove the rubber bung and throw it away. That is what the article advises so that is what i did as i do not want another clogged drain pipe. Tried to see if the other side also has one but the fuse box is there and i am scared of moving that so if one of you brave guys do check there, please let me know! Thanks! Btw., also cleaned the clogged drain pipe for the air con on a Corsa C and was amazed at the amount of water flowing out when i cleaned the drain. I do not lie, about a cup of water sloshed onto the paving. I modified the drain pipe so it could not clog up again.