What Causes Volkswagen's Auto Start-Stop to Fail?

1 Answers
AlexMarie
07/30/25 12:08am
Volkswagen's auto start-stop failure is generally caused by insufficient battery charge and throttle valve malfunction. Here are the relevant details: 1. Auto Start-Stop: Engine auto start-stop refers to a system that automatically shuts off the engine when the vehicle comes to a temporary stop (e.g., at a red light) and automatically restarts the engine when it's time to move forward again. Its English name is STOP-START, abbreviated as STT. The STT intelligent fuel-saving system is a set of controls for engine start and stop. 2. Working Principle: Auto start-stop primarily relies on the battery's capacity. Since starting the engine consumes a large amount of battery power due to the high current, vehicles equipped with this function should use high-capacity batteries that can withstand high current surges.
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