NHTSA Complaint #11533259 — 2022 SUBARU ASCENT

This observation/complaint is about a 2022 Subaru Ascent automobile, which I own. When the gas cap is loose, the car's computer disables several safety features, including collision avoidance, lane control, cruise control, reverse-automatic-braking control, all occur suddenly, while driving, after the computer processes the fault. Upon securing the gas cap and ostensibly fixing the problem, the computer MAY continue to disable said safety features for (according to Subaru Service agents) multiple days for as long as 30 days. On 7/2/23, while driving, several warning lights illuminated in the instrument cluster advising of the loss of many safety features. After stopping and reading the owners manual, I inspected and confirmed that the gas cap was properly sealed. That action did not fix the warning lights nor the disablement of safety features. I had 4 start-shutoff cycles in 6.5 hours. Three hundred and fifty miles later, I refueled, and confirmed that the gas cap was installed properly at the conclusion. Nothing changed with the disabled safety features. The following two days, I experienced 5 daily start-shutoffs with no effect on the safety features. The 3rd day, after 2 start-shutoff cycles, and while idling the engine, the warning lights disappeared and the safety features operated properly. Upon visiting a dealership, I was informed that the onboard computer identified a loose gas cap as the problem. Two service advisors told me that this experience is normal and that they have seen it take as long as 30 days for the computer to recognize that the problem was "fixed".