We use contemporary quantum computers to experimentally investigate quantum steering of an open quantum
system by measurements on its environment. On three IBM quantum processors we distinguish a qubit as the
open system and perform pairwise interactions with multiple environment ancillas, following a collision model
approach. Different measurement strategies on the ancillas lead to different state ensembles of the open system,
which are reconstructed by employing state tomography. The amount of steering within the resulting assemblages
is quantified with the help of a semidefinite program. We successfully observe the presence of quantum steering
in our experimental simulations and can discriminate the different performance qualities and noise levels of the
selected quantum devices.