How to Use Auto Start-Stop in Automatic Transmission Vehicles

[LaCamilla]

When the auto start-stop system shuts off the engine, quickly shift to P gear and release the brake pedal to keep the engine off. For safety considerations, pulling the handbrake and releasing the brake pedal while in D gear won't maintain engine shutdown - the system prioritizes quick acceleration readiness, so even shifting to N gear will restart the engine. Therefore, most vehicles' start-stop systems are designed to maintain engine shutdown only when quickly shifting from D to P gear. Key points: 1. The start-stop system is essentially automakers' "workaround" to meet stringent global emission and fuel economy regulations. Most systems operate with noticeable jerkiness, compromising driving comfort. 2. Proper usage and maintenance can deliver fuel savings, though the payoff period is lengthy. The two critical components - AGM batteries and reinforced starters - are costly. Improper use may cause vehicle malfunctions.