Have any systems on any Mars rovers failed (even partially) as a result of a dust storm?
There is the obvious problem of loss of solar power, but the failures there are the result of loss of power. Here I'd like to ask about a system issue directly caused by the storm and the dust in it. These might include contamination, mechanical interference, electrostatic charging, abrasion, fouled electrical connectors or bearings...
below: from PIA22486 "A self-portrait of NASA's Curiosity rover taken on Sol 2082 (June 15, 2018). A Martian dust storm has reduced sunlight and visibility at the rover's location in Gale Crater."
below x2: From Panorama of Vera Rubin Ridge PIA22545 "After snagging a new rock sample on August 9, 2018 (Sol 2137), NASA's Curiosity rover surveyed its surroundings on Mars, producing a 360-degree panorama of its current location on Vera Rubin Ridge [...] The panorama includes umber skies, darkened by a fading global dust storm. It also includes a rare view by the Mast Camera of the rover itself, revealing a thin layer of dust on Curiosity's deck.