If the electrical contacts under the engine's start/stop button cover are exposed to moisture, under certain conditions the button may activate without being pushed, causing the pressure washer to self-start and posing a risk of carbon monoxide poisoning if the unit is in a confined space. As of April 22, 2022, the company has received no reports of units self-starting in Canada. In the United States, the company has received 9 reports of units self-starting and no reports of injury or property damage.