For many drivers of 2018 Audi vehicles, the auto start-stop system, designed to improve fuel efficiency, can become a source of frustration. While intended to save gas, its constant engine restarts in stop-and-go traffic can feel jarring and potentially increase wear and tear over time. Many seek methods to permanently disable this feature, and naturally, the OBD2 port and memory settings are often considered as potential avenues for modification.
Existing attempts to disable start-stop often involve manipulating sensor readings to trick the car’s computer. These workarounds might fool the system into thinking the engine temperature is too high or the battery voltage is too low, both conditions that prevent auto start-stop from engaging. However, these methods are essentially masking the issue and can sometimes lead to error messages or unpredictable system behavior. They also typically render the factory start-stop button ineffective.
A more direct and reliable approach involves a simple circuit designed to automatically press the start-stop disable button each time the car is started. This method, demonstrated effectively on similar Volkswagen models, uses a timer circuit connected to the start-stop switch. Upon ignition, after a brief delay (around 5 seconds), the circuit simulates pressing the button, effectively disabling the system. This ensures the start-stop remains off without interfering with other vehicle functions or triggering false errors. Unlike OBD2 or memory-based tweaks that might alter vehicle software, this hardware solution offers a consistent and reversible way to manage the auto start-stop feature in your 2018 Audi.
For those interested in a DIY solution, circuit designs are available, ranging from simple open-loop circuits to more advanced versions using microcontrollers like Digispark (Arduino-style). These circuits provide a permanent and user-friendly way to disable auto start-stop, giving drivers back control over this feature without complex software modifications.
While the focus here is on a hardware-based timer circuit, understanding that many Audi owners are looking for OBD2 or memory-related solutions is important. This alternative method offers a robust and dependable way to achieve the desired outcome of disabling auto start-stop in a 2018 Audi and similar vehicles.
