Originally Posted by lordmorpheus

hhalimi,
1. The Amigos are NOT related to the brake fluid being overfilled
2. If the brake fluid was flushed at a shop, it is possible that what you are seeing under the reservoir is merely spilled fluid from the flush. I would use a turkey baster or something similar to lower the fluid to the correct level, clean the fluid from the outside, drive it, and see if it returns.
3. See the suggestion above.

Originally Posted by lordmorpheus

One of the reasons the shuttle valve switch fails if from the ingress of brake fluid past the shuttle valve seals. If the tips of the shuttle valve are wet with brake fluid, and you either ONLY perform the option B repair and/or replace the switch, the new switch is going to fail again due to the leaking fluid, regardless of the option B repair.

If the shuttle valve switch is dry, then your seals aren't leaking (yet) and the replacement switch and/or option B repair will fix the issue (if that is even the cause of the Amigos, which you won't definitely know until you get the codes read) until the original seals start to leak.

I have stated this before in other Amigo related posts: When I replaced my switch (which tested bad) I also performed the option B repair to prevent an electrical problem in the future, as well as replacing the seals to prevent a brake fluid caused issue in the future.

...I replaced the switch, seals, and did the option B repair, because I didn't want to mess with it ever again in the future.