Some Porsche Panamera owners report experiencing issues with the engine auto on/off feature not functioning properly after a battery change. These problems can stem from battery issues that deactivate the Start/Stop function, highlighting the importance of regular battery inspections and timely replacements. Additionally, owners may find that the auto on/off feature is temporarily deactivated until the vehicle reprograms itself for the new battery, which may require a technician's assistance. Certain preconditions, such as ensuring the engine compartment lid is closed and the driver's safety belt is fastened, must also be met for the Auto Start-Stop function to operate correctly. Furthermore, the Battery Management System (BMS) may disable the start-stop function if the battery charge is low to prioritize engine starting. Extreme temperatures can also negatively impact the functionality of this feature, making it crucial for owners to avoid exposing their vehicles to such conditions.
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