Starting the Passport Jacuzzi Ensamble

The "P" button under the faucet works SPORATICALLY. More often than not, touching it does not activate the jets, but persistently pushing it will start it eventually. The wall switch is on and the water level is above the brass button. My question: Does the "P" logo (switch) need replacing and if so, where do I get one?

what did you ever find out? Ours went on tonight, but wouldn't turn off with the "P"; we have to turn it off with breaker switch. And now that tub has no water in it, we turned the breaker on, and the motor is still running?