The left-hard-click from my xps13 is after 3 years kind of worn out and doesn't respond anymore as it should sometimes.
I think a replacement would be the best solution. Now the question is, is the hard-click function in the palmrest or in the touchpad itself? So which should I replace?
It's a separate part -- that said, only $10 separates the touchpad from the entire assembly. And before buying anything, look at the battery to see if any of the cells are swelling - which is a prime cause of touchpad issues. You may find it's the battery causing the problem, not the touchpad.