Cat 525B grapple function issue

[RookieLogger]

Hey guys, long time listener first time caller. Got a Cat 525B d/a, all the grapple functions work properly except the continuous pressure button stopped working a few days ago, anybody else encounter this before? Thanks in advance for any guidance 

[barbender]

@kiko is the man with this stuff

[Treecuttermo]

There is a sensor on the end of a hose. Mine is on the right side under the winch mounted to the frame. Pretty sure that is the sensor for the continuous squeeze. But first I'd check that the button was working correctly.