Update: The resistance values of the RM-X4S all checked out within the proper ranges (thanks for your suggestion Tony). I've tried clean installs of v1.03 and 2.00beta11 (without Hijack). I've tried removing the tuner extension cable, and I have checked for loose or disconnected wires. None of these things have made a difference -- only the OFF button (61 ohm) results in any result. Capturing the stalk commands to the serial port verified that the only buttons that consistently send a value are OFF and pressing the stalk down and releasing it. Last week other buttons would intermittently work, but even they would not result in the correct commands. Now these buttons result in nothing.

I have written Tech Support, but have more or less reached the conclusion that something is wrong within the tuner module. Hopefully they can suggest a fix which won't require that I mail my tuner module off to the UK. ...Mark