My new to me 2017 M3W has some leak from the brake fluid reservoir.
At the beginning I thought it is because the reservoir was over-filled. I took some of the brake fluid out and the level is now below the max mark. I also tightened the hose clamps but it still leaks.
It appears the leak is coming at the cap area. I checked the cap and it appear ok and well tightened with healthy looking rubber seal.
Any suggestions please?
I am not sure if this is of any help but the red brake warning light comes for a a few seconds when doing "hard" right-hand cornering (and fast driving in roundabouts), This red warning brake light does not come on left-hand cornering).
Thank you
Ahmed
