Maintenance is gratitude expressed before loss.

You can be grateful for something while it is still working, and maintenance is what that gratitude looks like in practice. The alternative is the sort of appreciation that arrives after the loss, which is genuine and comes too late to help. Attending to something now is the version that has an effect.

Think of what you would miss most if it stopped working. Do something for it this week. Gratitude expressed in advance is indistinguishable from care.