While you wait for answers, we may have found some information which could help you.
Click here for Remove Toilet PlasticThe push button on my Grohe Adagio stopped flushing ?
how to take unit apart?
Grohe 42181 toilet filler valve leaking?
Short burst of water entering cistern ?
how do I change the bellows in the push button unit for the grohe cistern?
Replacement of bellows in Grohe air button?