[Hodgepodge]

Hello all,

Couple of things. First, this fix is ONLY for the convertible E93 cars. The drain plug is for the convertible top drain and if it is clogged, the top drains down the back into the trunk along the roof rails.

I have 2 E93 cars and the left trunk compartment in one of them flooded during some heavy rain, shorting the ground to the amp to give that whining noise. I've been there on other cars, so I knew it was a bad ground or wet wires. Fortunately, I was able to remove the amp and dry it out.

To clear the drains, I jacked up the car enough to get a T30 torx driver into the two screws used to hold the panel/mud-guard covering the drain plug. I popped out ONE but not BOTH of the plastic rivets so I could move the guard out of the way. I popped the front one since the other one is up in the well further and impossible to see. The drain plug/baffle is a 14mm hex driver and is installed bayonet style, requiring only 1/4 turn to remove. Mine dropped right out.
I then used some semi-stiff wire to flush the debris out of the hole.

I'll try to attach an image.

When re-installing the two torx bolts, be VERY careful not to overtighten them as they are fastened with plastic speednuts.