This post is just what I was looking for. I built a cap to allow pressure bleeding as I have had good luck doing that with my old SAABs. But I could not pressure bleed the Leaf for some reason. I too made a DIY cap. I removed as much fluid as I could from the reservoir and replenished. I then attached the cap. It held pressure just fine at 15 psi. When I opened the first nipple (RR in my 2014), I expected a stream of fluid. Instead a small amount of fluid came out followed by air. At that point, the fluid level in the reservoir did not drop much. So I gave up on pressure bleeding and resorted to the brake pedal method, trying real hard not to press the pedal to its fullest travel. If anyone can give me coaching, please let me know. Thanks!