What does the wrench symbol mean on the jetta valet key?

the wrench symbol is there to symbolize "service" because its a "service key" more commonly referred too as a valet key. the point in the key is that you can use your switchblade key to lock your valuables or anythign else you don't want seen or messed w/ in the glove box or trunk and then lock them the service key will not allow access to those areas.