The maf or air flow meter on the 03 1.8t is located in the lid of the air filter box. passenger side front, take of the cover, unclip the lid and wrestle it out, 2 screws hold it in place.

Not very far. Without the cap on your radiator your cooling fluid will not flow properly and you can have a serious problem with overheating.

The plural of "lid" is "lids."

If not the substances or chemical in the crucible will flow out and drip onto the table

A locking lid is a type of lid that will lock so the lid cannot easily be taken off. Most locking lids have a latch, so the lid cannot lift up until the latch is unlatched.