Try to heat up the taps (very gently) and push them outwards. So they can click back in.
They might be disformed by heat or something, and not clicking back in.
We, with our Multivan dashboards (Caravelle for you?), have a silver looking tab and is sturdier than the simple plastic tab you guys have.
Have not had it on mine, but as I said, it's a different material.