Modern PSA vehicles now require online accounts with active subscriptions for even basic parameter changes. A 996 Top installation is often kept on a dedicated Windows 7 or 10 LTSC laptop, isolated from the internet, for:
DiagBox 996 is diagnostic software for PSA/Peugeot/Citroën (and some other brands) that, when “Full Top Activated,” provides full vehicle access: reading/clearing fault codes, live data, actuations, ECU programming, key coding, SCU/BCM configuration, and more. Below is a concise, actionable guide covering installation, activation, usage, common tasks, troubleshooting, and cautions. diagbox 996 full top activated