Why can't you directly connect the negative terminal when jump-starting a car with auto start-stop?

[SanEllie]

Cars equipped with auto start-stop function should not have the negative terminal directly connected during jump-starting, as it may cause program disturbances and affect the vehicle's operation. Therefore, when jump-starting, avoid connecting directly to the battery's negative terminal; instead, secure it to any metal part of the car body. Below are relevant details: Features of start-stop technology: Basic start-stop technology automatically shuts off the engine when the car encounters a red light or traffic jam, and the engine promptly restarts when the driver releases the brake pedal or presses the clutch (or accelerator pedal). More advanced start-stop systems also include brake energy recovery, converting some of the braking energy into electrical energy to recharge the battery. Function of engine start-stop: Used during low-speed driving and frequent stops, it automatically turns off the engine to avoid unnecessary fuel consumption and reduce idle time. Less idle time means reduced engine carbon buildup, benefiting both environmental protection and the engine's lifespan.