I've got a problem with controlling a Pioneer DEH30MP using the steering wheel controls. All controls work except the forward/skip button which works initially when starting the ignition/engine but after a few mins it turns the mute (ATT) on. The HU came from a Vec B of which I had no trouble. I've now got an 02 LS and have replaced the wiring loom for the controls and still got no joy. Can anyone help with this?