Why doesn't the start-stop function work after replacing the battery?

[VanAdriel]

The main reasons why the start-stop function doesn't work after replacing the battery include: cold start injector not spraying fuel, coolant temperature sensor failure, intake sensor failure, poor fuel injector atomization, carbon buildup in the intake manifold, insufficient ignition energy, spark plug failure, idle control valve malfunction, etc. Here are precautions for car ignition: 1. For manual transmission start-up: First confirm the parking brake position, check if the gearshift is in neutral, then press the clutch pedal fully with your left foot. Turn the ignition switch progressively to the "START" position, with each start attempt not exceeding 5 seconds. 2. If the key won't turn: After starting the vehicle, check if the oil pressure warning light, charging warning light, and malfunction indicator light are off. If they remain on, there may be an abnormality - you can stop and inspect the vehicle.