L4 - Verify Float Buoyancy

- Remove the cap from the master cylinder reservoir.

- Using a clean steel implement, attempt to push the float down.

- Does the float move down?

YES -- GO to L5. L5 - Check RABS Module

NO -- the float sits on the bottom. Replace the master cylinder reservoir. Bleed the brake system. Brake Bleeding
Repeat L1. L1 - Check Proper Function of Brakelamp