What causes the Audi Q3 dashboard to display a start-stop malfunction?

[CodyAnn]

The reasons for the Audi Q3 dashboard displaying a start-stop malfunction include: Battery EBS sensor failure; Vacuum sensor failure; Brake switch failure; Electronic vacuum pump failure; Gear position switch failure; Start-stop system control unit issue (wiring or internal control unit); Start-stop switch failure. Introduction to Auto Start-Stop: Engine auto start-stop automatically shuts off the engine when the vehicle comes to a temporary stop (e.g., at a red light) during driving. When it's time to move forward again, the system automatically restarts the engine. The STT intelligent fuel-saving system is a set of controls for engine start and stop. Auto Start-Stop Principle: It works by equipping a traditional engine with an enhanced motor that has idle start-stop functionality, allowing the engine to completely shut off when idle stop conditions are met. When the vehicle needs to start moving again, the idle start-stop motor system quickly responds to the driver's start command, rapidly restarting the engine for seamless transition, thereby significantly reducing fuel consumption and exhaust emissions.