How to refill brake fluid<br>Park the vehicle on a level surface and turn off the engine. [substeps] Before proceeding, make sure that the vehicle is in park with the parking brake activated. Though the risk of a free-rolling vehicle is almost insignificant for this procedure, it's better to be safe than sorry.
the vehicle has to be in park with the parking break activated
( z1 obligate :ARG2 ( z2 and :op ( z3 park :ARG1 ( z4 vehicle ) ) :op ( z5 activate :ARG1 ( z6 break :ARG1 ( z7 park ) ) ) ) )