Godzilla was reported to have a dead bumper. Usually it's a case of a broken wire but this one was mechanical. It didn't take too long to see a situation where the bumper's skirt was stuck in a way it needed a ball hit from another angle to release it. Bumpers are usually pretty reliable and this exact failure has before only happened when something has fallen off the mechanism.

The skirt has a stick, that actuates a plastic part fittingly named spoon, which again presses against the switch contact. The stick was getting stuck on the spoon's side and looking more closely, the stick wasn't at the center at rest. Could be the switch has been worked on before and it wasn't checked when it was reassembled or something.

A quick realignment later it seems happy again.